CN108560151A - Overedger control system, control method and overedger - Google Patents
Overedger control system, control method and overedger Download PDFInfo
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- CN108560151A CN108560151A CN201810651154.5A CN201810651154A CN108560151A CN 108560151 A CN108560151 A CN 108560151A CN 201810651154 A CN201810651154 A CN 201810651154A CN 108560151 A CN108560151 A CN 108560151A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 109
- 238000009958 sewing Methods 0.000 claims abstract description 94
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 238000003825 pressing Methods 0.000 claims description 78
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000009964 serging Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
- D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
- D05B1/18—Seams for protecting or securing edges
- D05B1/20—Overedge seams
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
- D05B3/04—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for work feed
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
A kind of overedger control system of present invention offer, control method and overedger.Overedger control system include for carrying out the overedger of sewing operations, feed mechanism and main control module for conveying cloth；Wherein, main control module is rotated for movements of the X to, Y-direction of the feed mechanism relative to overedger and/or the Z axis relative to overedger, wherein X is mutually perpendicular to, Y-direction and Z-direction, for X to parallel with the plane where cloth with Y-direction, Z-direction is vertical with the plane where cloth.Overedger control system, control method and the overedger of the present invention has higher production efficiency and machining accuracy.
Description
Technical Field
The invention relates to the technical field of sewing equipment, in particular to an overlock machine control system, a control method and an overlock machine.
Background
The overedger is commonly called as overlock machine, edge sewing machine and serging machine, has the main function of preventing the sewing head of the clothes from fluffing, can be used for overedging, and can also be used for overedging processing of fabrics such as sewing T-shirts, sports wear underwear and knitting. With the increase of labor cost, how to improve the working efficiency and reduce errors caused by manual operation also become the targets pursued by various processing enterprises, and are also strong desires of towel and square towel processing enterprises.
Generally, four edges of a towel, a cleaning cloth or a square towel are sewn, corner parts are required to be machined into round corners with radian in most cases, and the four round corners are required to be consistent in radian and symmetrical. However, a common overedger can only sew straight lines and cannot perform automatic corner sewing and fillet sewing with any radian, and at present, a processing plant basically operates one overedger by a skilled worker, and manually operates a towel, a square towel and the like to perform corner turning at a place needing the corner according to requirements.
At present, aiming at edge wrapping, when a plurality of edges are required to be continuously sewn and corners are required to be sewn, the manual intervention is completely carried out, and the corners of towels, square towels and the like are controlled to move by hands according to the current sewing rotating speed, so that the whole processing has the following defects: when the processing requirement is higher, because the sewing rotating speed of the overedger is higher (more than 3000 rpm), in order to ensure the processing quality, the overedger must perform speed reduction sewing at a corner so as to better complete the corner action, thereby greatly reducing the production efficiency; and because the corner is realized by manual intervention completely, the consistency of the corner cannot be ensured, and the defective rate is high.
Disclosure of Invention
The invention provides an overlock machine control system, an overlock machine control method and an overlock machine, which have higher production efficiency and machining precision.
The invention provides a control system of an overlock machine, which comprises a feeding mechanism and a main control module, wherein the feeding mechanism is used for conveying cloth; the main control module is used for moving the feeding mechanism relative to the X direction and the Y direction of the overedger and/or rotating relative to the Z axis of the overedger, wherein the X direction, the Y direction and the Z direction are vertical to each other, the X direction and the Y direction are parallel to a plane where the cloth is located, and the Z direction is vertical to the plane where the cloth is located.
Because the feeding mechanism and the main control module are added to the overedger, when sewing, the main control module controls the feeding mechanism to move in the X direction and the Y direction relative to the overedger, so that cloth on the feeding mechanism can be driven to move linearly relative to a sewing needle of the overedger, and the linear sewing is realized; the main control module controls the feeding mechanism to move in the X direction and the Y direction relative to the overedger, and the cloth on the feeding mechanism can be driven to move in a curve relative to a sewing needle of the overedger by rotating relative to the Z axis of the overedger, so that the corner or curve sewing of the cloth is realized. In addition, the sewing of the curve or the corner is finished by controlling the whole system by the main control module without manual intervention, so that the finished product rate is high and the processing precision is high.
Optionally, the feeding mechanism includes a feeding workbench for bearing the cloth, a pressing frame, an X-direction feeding motor, a Y-direction feeding motor, and a Z-direction feeding motor, wherein the pressing frame is configured to press the cloth on the feeding workbench and can drive the cloth to move together relative to the overedger, the X-direction feeding motor is configured to drive the pressing frame to perform translational movement in the X-direction relative to the overedger, the Y-direction feeding motor is configured to drive the pressing frame to perform translational movement in the Y-direction relative to the overedger, and the Z-direction feeding motor is configured to drive the pressing frame to rotate relative to the overedger with the Z-direction as a rotating shaft. Therefore, the cloth can be driven to move linearly only by driving the feeding motor to drive the pressing frame to translate along the X direction and the Y direction relative to the overedger through the main control module, or the cloth can be driven to move curvilinearly by driving the feeding motor to drive the pressing frame to translate along the X direction and the Y direction relative to the overedger and rotating by taking the Z direction as a rotating shaft.
Optionally, the friction coefficient of the surface of the pressing frame, which is in contact with the cloth, is smaller than the friction coefficient of the surface of the feeding workbench, which is in contact with the cloth. Therefore, when the cloth is clamped between the pressing frame and the feeding workbench, taking an X-direction feeding motor as an example, if the X-direction feeding motor drives the pressing frame to translate along the X direction relative to the overedger, the cloth follows the pressing frame to translate along the X direction relative to the overedger because the frictional resistance of the pressing frame to the cloth is greater than that of the feeding workbench. For the same reason that the Y-direction feeding motor and the Z-direction feeding motor drive the pressing frame to move, the cloth can correspondingly move along with the pressing frame, and the description is omitted here. In the actual sewing process, the friction coefficient of the surface of the feeding workbench is very small and smooth, the friction coefficient of the surface of the pressing frame in contact with the cloth is large, and when the pressing frame presses the cloth with a certain pressure, the cloth can move along with the pressing frame without blocking or falling.
Optionally, the X-direction feeding motor, the Y-direction feeding motor and the Z-direction feeding motor are stepping motors, and the main control module is configured to perform stepping closed-loop motor control on the X-direction feeding motor, the Y-direction feeding motor and the Z-direction feeding motor. The stepping motor is a motor commonly adopted in industry, has low cost, is convenient for large-scale use in batch production, and simultaneously adopts closed-loop motor control to ensure that the control process is more timely and accurate.
Optionally, the overlock sewing machine control system further comprises a cloth sensor for detecting whether the cloth exists or not at the discharge position. When sewing is started, whether cloth exists in the cloth placing position area is detected through the cloth inductor, and therefore the phenomenon that resources are wasted due to misoperation of a system and empty joints are avoided under the condition that no cloth exists in the cloth placing position area is avoided.
Optionally, the overlock sewing machine control system of the invention further comprises an X-direction position sensor, a Y-direction position sensor and a Z-direction position sensor, wherein the X-direction position sensor is used for detecting the position of the feeding mechanism relative to the overlock sewing machine in the X direction, the Y-direction position sensor is used for detecting the position of the feeding mechanism relative to the overlock sewing machine in the Y direction, and the Z-direction position sensor is used for detecting the angle of the feeding mechanism relative to the overlock sewing machine in the Z direction;
the main control module is used for determining the position of the feeding mechanism relative to the overedger according to the detection results of the X-direction position sensor, the Y-direction position sensor and the Z-direction position sensor.
Optionally, the overlock sewing machine control system of the invention further comprises one or more of the following components: the sewing machine comprises a starting switch, an emergency stop switch and an operation panel, wherein the starting switch is used for starting sewing; the emergency stop switch is used for braking control in case of emergency; the operation panel is used for setting corresponding control parameters for the main control module. By the arrangement, an operator can visually see the setting condition of the system parameters, and the system is convenient to operate by the operator, so that the function of the control system is more perfect, the capability of dealing with emergencies is enhanced, and the system is more reliable.
In another aspect, the present invention provides an overlock machine comprising the overlock machine control system according to any one of the above aspects.
In another aspect, the present invention provides a control method for an overlock machine, including:
the cloth is conveyed to the working position of the overedger through the feeding mechanism;
controlling the feeding mechanism to move along the plane of the cloth relative to the overedger so as to sew the straight line part of the cloth; or,
and controlling the feeding mechanism to move along the plane direction of the cloth relative to the overedger and simultaneously rotate in the Z direction vertical to the plane of the cloth so as to sew the corner or the curve part of the cloth, wherein the plane direction of the cloth comprises an X direction and a Y direction which are vertical to each other.
The linear sewing is realized by controlling the feeding mechanism to be linked in the X direction and the Y direction, and the corner sewing or the curve sewing is realized by controlling the feeding mechanism to be linked in the X direction, the Y direction and the Z direction, so that the sewing of any curve type can be realized by the system.
Optionally, after sewing the fabric, the method further includes: and controlling the feeding mechanism to move the sewed cloth to the discharging area.
Optionally, if the feeding mechanism rotates a certain angle around the Z direction in the sewing process, the sewn cloth is moved to the discharging area, and the sewing method specifically includes controlling the pressing frame used for pressing the cloth to rotate reversely relative to the Z direction by the certain angle and then return to the sewing position.
Because in each sewing process, the feeding mechanism rotates a certain angle relative to the Z direction, if the feeding mechanism rotates a certain angle in a clockwise accumulated way, for example, A degrees, after sewing is finished, the pressing frame rotates the certain angle around the Z direction along the anticlockwise direction, so that after each operation is finished, the pressing frame rotates back to the initial position, namely, the position of the pressing frame in the Z direction is initialized.
The overedger control system, the control method and the overedger realize the extended application of a common overedger and increase the control of an automatic feeding part and an automatic turning angle, particularly, because a feeding mechanism and a main control module are added to the overedger, when sewing, the main control module controls the feeding mechanism to move in X direction and Y direction relative to the overedger, so that the cloth on the feeding mechanism can be driven to move linearly relative to a sewing needle of the overedger, and the linear sewing is realized; when the corner part or the curve part is machined, the main control module controls the feeding mechanism to move in the X direction and the Y direction relative to the overedger, and simultaneously, the feeding mechanism can be driven to move in a curve relative to a sewing needle of the overedger by rotating relative to the Z axis of the overedger, so that corner or curve sewing of the cloth is realized, and the corner or curve sewing and the curve sewing can be alternately realized to sew any pattern. In the whole process, the rotating speed of the overedger does not need to be reduced, so the production efficiency is greatly improved, and in addition, the sewing at the curve or the corner is finished by controlling the whole system by the main control module without manual intervention, so the finished product rate is high, and the processing precision is high. Therefore, the automatic edge covering function of the cloth can be realized, the working efficiency is greatly improved, and the defective rate is reduced.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a overedger control system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a control system of the overedger according to an embodiment of the present invention;
fig. 3 is a flowchart of a overedger control method according to a second embodiment of the present invention.
Description of reference numerals:
1-overedger; 11-start switch;
12-a cloth sensor; 13-X position sensor;
a 14-Y position sensor; a 15-Z position sensor;
16-a scram switch; 17-a spindle motor;
18-tangent air valve; 19-lifting the presser foot air valve;
111-air valve for loosing thread; 112-suction line air valve;
2-a main control module; 3-a feeding mechanism;
31-a feeding workbench; a 32-X direction feeding motor;
a 33-Y direction feeding motor; a 34-Z direction feeding motor;
35-a material pressing air valve; 36-pressing the frame;
37-a support bar; 38-a cross beam;
39-a trench; 311-a press frame connection part;
4-an operation panel; and 5, distributing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an overlock machine control system provided in the first embodiment of the present invention, and fig. 2 is a block structural diagram of the overlock machine control system provided in the first embodiment of the present invention. As shown in fig. 2, the overedger control system includes a main control module 2, a feeding mechanism 3 for feeding cloth 5, a material pressing air valve 35 disposed on the feeding mechanism 3, an operation panel 4, a start switch 11, a cloth sensor 12, an X-position sensor 13, a Y-position sensor 14, a Z-position sensor 15, and an emergency stop switch 16. The overlock machine control system is used to control a conventional overlock machine 1. The following describes in detail the various components within the overlock machine control system.
First, the overlock sewing machine 1 of the present invention can use a general overlock sewing machine 1 which is used in large quantities in the industry for cost reduction. The overedger 1 is provided with a spindle motor 17 for driving a sewing needle to work, and the main control module 2 controls the sewing operation of the overedger 1 by controlling the spindle motor 17. The overedger 1 is further provided with a thread cutting air valve 18, a presser foot lifting air valve 19, a thread releasing air valve 111, and a thread suction air valve 112, which are known in the art, and the main control module 2 controls these air valves to perform a thread cutting operation, a presser foot lifting operation, a thread releasing operation, a thread suction operation, and the like in the sewing process. Since these gas valves are well established in the prior art, they will not be described in detail here. The main control module 2 comprises a control panel and a stepping drive plate, the control panel realizes control over each component, each air valve and the like, and the stepping drive plate realizes control over a spindle motor, each feeding motor and the like of the overedger 1.
Next, the feeding mechanism 3 will be described, as shown in fig. 1, where the X-direction, the Y-direction and the Z-direction are perpendicular to each other, the X-direction and the Y-direction are parallel to the plane of the cloth 5, and the Z-direction is perpendicular to the plane of the cloth 5. This figure is a schematic view of the structure of the system, and for example, the main control module 2, the discharging section, and the like are not shown. As shown in fig. 1, two grooves 39 extending in the Y direction are provided on the feeding table 31, two support rods 37 vertically extending upward from the lower portion of the feeding table 31 are provided, the support rods 37 can horizontally move in the Y direction in the grooves 39, and a Y-direction feeding motor 33 (not shown) is further provided below the feeding table 31 to drive the support rods 37 to horizontally move in the Y direction. An X-direction feed motor 32 is provided on the support rod 37 at a position higher than the feed table 31, a cross beam 38 is provided between the two support rods 37, a frame pressing connection portion 311 is provided on the cross beam 38, and the X-direction feed motor 32 drives the frame pressing connection portion 311 to move horizontally in the X direction. A Z-direction feed motor 34 is provided above the pressing frame connecting portion 311, a pressing frame 36 is further connected below the pressing frame connecting portion 311, the pressing frame 36 presses the cloth 5 on the feed table 31, and the Z-direction feed motor 34 is configured to drive the pressing frame 36 to rotate with respect to the overedger 1 about the Z-direction as a rotation axis.
In the specific sewing process, when X, Y, Z three-axis linkage is used for sewing curves, if the Y-direction feeding motor 33 drives the support rod 37 to horizontally move along the Y-direction, the cross beam 38 and the pressing frame connecting part 311 are used for transmission, so that the pressing frame 36 drives the cloth 5 to horizontally move along the Y-direction, if the X-direction feeding motor 32 drives the pressing frame connecting part 311 to horizontally move along the X-direction, the pressing frame 36 connected with the pressing frame connecting part 311 drives the cloth 5 to horizontally move along the X-direction, and if the Z-direction feeding motor 34 directly drives the pressing frame 36 to rotate relative to the overedger 1 by taking the Z-direction as a rotating shaft, the pressing frame 36 drives the cloth 5 to rotate by taking the Z-direction as a rotating shaft, so that X, Y, Z three-axis linkage is realized, and the pressing frame 36 drives the cloth 5 to curve-move relative to the overedger.
When X, Y sewing straight line with two axes linkage, if the Y-direction feeding motor 33 drives the support rod 37 to move horizontally along the Y-direction, the cross beam 38 and the pressing frame connecting part 311 are used for transmission, so that the pressing frame 36 drives the cloth 5 to move horizontally along the Y-direction, if the X-direction feeding motor 32 drives the pressing frame connecting part 311 to move horizontally along the X-direction, the pressing frame 36 connected with the pressing frame connecting part 311 drives the cloth 5 to move horizontally along the X-direction, thus, X, Y two axes linkage is realized, and the pressing frame 36 drives the cloth 5 to move linearly relative to the overedger 1 for sewing straight line part.
In summary, the main control module 2 (not shown) is used for the X-direction and Y-direction movement of the feeding mechanism 3 relative to the overedger 1 and/or the Z-axis rotation of the overedger 1 relative to 1, that is, during sewing, the X-direction feeding motor 31 drives the pressing frame 36 to perform translation along the X-direction relative to the overedger 1, the Y-direction feeding motor 33 drives the pressing frame 36 to perform translation along the Y-direction relative to the overedger 1, and the Z-direction feeding motor 34 drives the pressing frame 36 to rotate relative to the overedger 1 by taking the Z-direction as a rotating shaft. When the pressing frame 36 drives the cloth 5 to translate along the X direction and the Y direction relative to the overedger 1, linear sewing is carried out; when the pressing frame 36 drives the cloth 5 to perform translation along the X direction and the Y direction relative to the overedger 1 and to rotate relative to the overedger 1 by taking the Z direction as a rotating shaft, curve sewing is performed.
Optionally, the X-direction feeding motor 32, the Y-direction feeding motor 33, and the Z-direction feeding motor 34 may be stepping motors, and the main control module 2 performs stepping closed-loop motor control on the X-direction feeding motor 32, the Y-direction feeding motor 33, and the Z-direction feeding motor 34. The pressure frame 36 is further provided with a material pressing air valve 35 (not shown) for driving the pressure frame 36 to move, and the pressure frame 36 can be controlled to be raised or lowered as necessary. After the overedger 1 finishes sewing, the main control module 2 controls the feeding mechanism 3 to rotate the pressing frame 36 around the Z direction for a certain angle and then return to the sewing starting point. Specifically, if the pressing frame 36 rotates a certain angle relative to the Z direction during each sewing process, it is assumed that the pressing frame 36 rotates a certain angle, for example, a ° cumulatively around the Z direction in the clockwise direction, and if the pressing frame 36 rotates a certain angle, for example, a ° counterclockwise around the Z direction after the sewing is completed, the pressing frame 36 rotates back to the initial angular position after each operation is completed, that is, the angular position of the pressing frame in the Z direction is initialized. In addition, the action of the material pressing air valve 35 is also controlled by the main control module 2.
The feeding mechanism 3 formed as described above may be of another form as long as the effects that the X-direction feeding motor 31 drives the press frame 36 to perform translation in the X direction with respect to the overedger 1, the Y-direction feeding motor 33 drives the press frame 36 to perform translation in the Y direction with respect to the overedger 1, and the Z-direction feeding motor 34 drives the press frame 36 to rotate with respect to the overedger 1 about the Z direction as a rotation axis can be achieved. Other types or configurations of drive mechanisms between the feed motor and the press frame 36 may be selected.
Returning to fig. 1 for explanation, the operation panel 4 is used for setting relevant parameters for the main control module 2, including the length, width, stitch length, corner radius, etc. of the fabric 5 (such as towel, shawl) to be sewn, and other control parameters. The start switch 11 is used for starting sewing, and the emergency stop switch 16 is used for braking control in case of emergency. The cloth sensor 12 is used for detecting whether the cloth 5 exists or not at the cloth placing position, the system can convey the cloth to the sewing position for sewing when detecting that the cloth 5 exists, the cloth 5 is required to be placed at the required position by an operator, and the cloth sensor 12 is generally placed at the center of the cloth placing position. In addition, the overlock machine control system of the present embodiment further includes an X-direction position sensor 13, a Y-direction position sensor 14, and a Z-direction position sensor 15 for determining the starting position of the overlock machine 1. Specifically, when the overedger system is powered on, the X-direction position sensor 13 is used for detecting the position of the feeding mechanism 3 in the X direction relative to the overedger 1, the Y-direction position sensor 14 is used for detecting the position of the feeding mechanism 3 in the Y direction relative to the overedger 1, and the Z-direction position sensor 15 is used for detecting the angle of the feeding mechanism 3 in the Z direction relative to the overedger; the main control module 2 is used for determining the position of the feeding mechanism 3 relative to the overedger 1 according to the detection results of the X-direction position sensor 13, the Y-direction position sensor 14 and the Z-direction position sensor 15, and if the position is not at the initial position designated by the system, the main control module 2 correspondingly controls the X-direction feeding motor 32, the Y-direction feeding motor 33 or the Z-direction feeding motor 34 to drive the feeding mechanism 3 to run to the initial position designated by the system.
The control method of the overedger is described below by taking the automatic edge-covering sewing of the square kerchief as an example. Fig. 3 is a flowchart of a overedger control method according to a second embodiment of the present invention. The overedger control method provided by the second embodiment of the invention can be applied to the overedger in the first embodiment. As shown in fig. 3, after the system is powered on, the automatic edge covering steps are as follows:
s601, conveying the cloth to a working position of the overedger through a feeding mechanism.
S602, controlling the feeding mechanism to move along the plane of the cloth relative to the overedger so as to sew the straight line part of the cloth; or,
and controlling the feeding mechanism to move along the plane direction of the cloth relative to the overedger and simultaneously rotate in the Z direction vertical to the plane of the cloth so as to sew the corner or the curve part of the cloth, wherein the plane direction of the cloth comprises an X direction and a Y direction which are vertical to each other.
The above steps are explained in detail by a specific practical operation process.
Specifically, relevant sewing parameters can be set for the main control module through the operation panel, including information such as the length of the square towel, the width, the corner radius, the needle pitch and the like, then the square towel is placed in a material placing area of the feeding mechanism according to requirements, a starting switch is pressed after the square towel is placed, the main control module automatically finds the initial position of the overedger according to feedback signals of an X-direction position sensor, a Y-direction position sensor and a Z-direction position sensor, and controls an X-direction feeding motor and a Y-direction feeding motor to drive the feeding mechanism to run to a working area of the overedger, and the main control module enters a sewing state. Afterwards, the main control module detects through the cloth sensor to determine whether the feeding mechanism is provided with the square towel, if so, the next step is carried out, and if not, the feeding mechanism is in a waiting state. When the main control module confirms that the square towel exists, the pressure air valve is controlled to be opened, the pressure frame is pressed down and the square towel is pressed, and meanwhile, the pressure foot lifting air valve is controlled to lift the pressure foot of the overedger. Then, the presser foot of the overedger is pressed down, the main shaft starts sewing, and simultaneously the air suction valve is started so as to suck the braid, and in addition, after the sewing is started, a worker can continue to place a square towel at the material placing position so as to facilitate the next sewing.
Specifically, when the straight line sewing is carried out, the main control module controls the X-direction feeding motor and the Y-direction feeding motor to drive the pressing frame of the feeding mechanism to carry out translation along the X direction and the Y direction relative to the overedger, namely, the pressing frame moves along the plane where the square kerchief is located, the sewing needle drives the sewing thread to move up and down at the moment, and the straight line part sewing is carried out on one edge of the square kerchief.
When the sewing machine is sewn at a corner, the main control module controls the starting of the Z-direction feeding motor, controls the feeding mechanism to translate along the X direction and the Y direction relative to the overedger and simultaneously rotates relative to the overedger by taking the Z direction as a rotating shaft, and at the moment, the sewing needle drives the sewing thread to move up and down so as to sew the cloth corner or curve part. After the corner sewing is finished, the sewing of the straight line part and the corner part is repeated until all four edges of the square towel are sewn.
After sewing is finished, the thread cutting machine can be started and the air suction valve can be closed. Then the main control module controls the feeding mechanism (realized by controlling the X-direction feeding motor and the Y-direction feeding motor) to move the sewn square towel to the discharging area.
And finally, controlling the pressing frame to lift up, reversely rotating for 360 degrees relative to the Z axis of the overedger (realized by controlling a Z-direction feeding motor) and then returning to the sewing position, wherein an operator can take off the sewn product.
Here, since the square cloth has four corners to be sewn, the press frame rotates four times in total in the entire sewing process, and rotates 360 ° cumulatively, and finally the press frame needs to be controlled to be lifted and rotate 360 ° reversely with respect to the Z axis of the overedger. If other types of curves are sewn, the pressing frame rotates for a certain angle relative to the Z direction in each sewing process, the pressing frame is supposed to rotate for a certain angle in a clockwise direction around the Z direction in an accumulated mode, for example, A degrees, if the pressing frame rotates for a certain angle in the Z direction along the anticlockwise direction after sewing is finished, namely, A degrees, the pressing frame rotates back to an initial angle position after each operation is finished, and the angle position of the pressing frame in the Z direction is initialized.
In the process, if the system is set to be in an automatic mode, whether the cloth is automatically sewn or not can be detected according to the cloth sensor, and if the system is not in the automatic mode, whether the sewing is performed or not can be controlled through the starting switch. It will be appreciated by those skilled in the art that the sewing process of the present embodiment is illustrated with respect to the corner of the towel, but is not limited to the corner of the towel, and may be applied to sewing other types of cloth such as towels.
The invention also provides an overlock machine which comprises an overlock machine body and the overlock machine control system in the first embodiment.
In the system, in order to be convenient for reconstruction on the basis of the existing overedger and realize the automatic edge covering function, the system can open a control signal to be introduced into the pedal control end of the existing overedger control system so as to realize the control of the overedger. Therefore, the system can be widely used for the modification and the upgrade of a single type of the overedger.
In addition, the present invention has been described with reference to the case where the towel is wrapped and sewn with four sides and corners, and the curved portion refers to a rounded portion at the corner. Of course, the overedger system of the present invention may also be used in the processing of more complex curves, such as for example, sewing T-shirts, sportswear underwear, special patterns of knitted fabrics, etc., or curves of special shapes. In the present invention, the straight line part is machined first and the curved line part is machined second, but in actual practice, the curved line part may be machined first and the straight line part may be machined second, and the machining procedure in the present invention is not particularly limited.
It can be understood by those skilled in the art that, in the embodiment, the feeding motor drives the pressing frame to drive the cloth to translate along X, Y direction and rotate around Z direction as an example, in a specific implementation process, as long as the feeding motor can drive the feeding mechanism to drive the cloth to move in X direction and Y direction relative to the overedger and/or rotate relative to Z axis of the overedger, the feeding motor can drive the feeding table in the feeding mechanism to drive the cloth to translate along X, Y direction and rotate around Z direction, and the pressing frame only plays a role of pressing the cloth, and such changes all fall within the protection scope of the present invention.
For the overedger control system in the prior art, sewing can be realized only by controlling the main shaft to operate, but only unidirectional linear sewing can be realized, and corner sewing cannot be automatically completed.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In addition, in the present invention, unless otherwise explicitly specified or limited, the terms "connected," "fixed," "mounted," and the like are to be construed broadly, e.g., as mechanical or electrical connections; the terms may be directly connected or indirectly connected through an intermediate, and may be used for communicating between two elements or for interacting between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A control system of an overlock machine is characterized by comprising a feeding mechanism and a main control module, wherein the feeding mechanism is used for conveying cloth; the main control module is used for enabling the feeding mechanism to move in the X direction and the Y direction relative to the overedger and/or rotate relative to the Z axis of the overedger, wherein the X direction, the Y direction and the Z direction are perpendicular to each other, the X direction and the Y direction are parallel to a plane where the cloth is located, and the Z direction is perpendicular to the plane where the cloth is located.
2. The overlock machine control system according to claim 1, wherein the feeding mechanism comprises a feeding workbench for bearing cloth, a pressing frame, an X-direction feeding motor, a Y-direction feeding motor and a Z-direction feeding motor, wherein the pressing frame is used for pressing the cloth on the feeding workbench and driving the cloth to move together relative to the overlock machine, the X-direction feeding motor is used for driving the pressing frame to translate along the X direction relative to the overlock machine, the Y-direction feeding motor is used for driving the pressing frame to translate along the Y direction relative to the overlock machine, and the Z-direction feeding motor is used for driving the pressing frame to rotate relative to the overlock machine by taking the Z direction as a rotating shaft.
3. The overlock machine control system according to claim 2, wherein a friction coefficient of a surface of the press frame, which is in contact with the cloth, is smaller than a friction coefficient of a surface of the feed table, which is in contact with the cloth.
4. The overlock machine control system according to claim 1 or 2, further comprising a cloth sensor for detecting presence or absence of a cloth at the discharge position.
5. The overlock machine control system of claim 1 or 2, further comprising an X-position sensor for detecting a position of the feed mechanism relative to the overlock machine in the X-direction, a Y-position sensor for detecting a position of the feed mechanism relative to the overlock machine in the Y-direction, and a Z-position sensor for detecting an angle of the feed mechanism relative to the overlock machine in the Z-direction;
the main control module is used for determining the position of the feeding mechanism relative to the overedger according to the detection results of the X-direction position sensor, the Y-direction position sensor and the Z-direction position sensor.
6. The overlock machine control system according to claim 1 or 2, further comprising one or more of: a start switch, an emergency stop switch and an operation panel, wherein,
the starting switch is used for starting sewing; the emergency stop switch is used for performing braking control when an emergency occurs; the operation panel is used for setting corresponding control parameters for the main control module.
7. An overlock machine comprising the overlock machine control system of any one of claims 1 to 6.
8. A control method of an overlock machine is characterized by comprising the following steps:
conveying the cloth to a working position of an overlock machine through a feeding mechanism;
controlling the feeding mechanism to move along the plane of the cloth relative to the overedger so as to sew the straight line part of the cloth; or,
and controlling the feeding mechanism to move along the plane direction of the cloth relative to the overedger and simultaneously rotate relative to the Z direction vertical to the plane of the cloth so as to sew the corner or the curve part of the cloth, wherein the plane direction of the cloth comprises an X direction and a Y direction, and the X direction and the Y direction are vertical to each other.
9. The overlock machine control method according to claim 8, further comprising, after sewing the fabric,: and controlling the feeding mechanism to move the sewed cloth to the discharging area.
10. The overlock machine control method according to claim 9, wherein if the feeding mechanism rotates by a certain angle around the Z direction during sewing, the step of moving the sewn fabric to a discharge area specifically includes controlling a pressing frame for pressing the fabric to rotate by the certain angle in a reverse direction with respect to the Z direction and then return to a sewing start position.
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| CN201810651154.5A CN108560151B (en) | 2018-06-22 | 2018-06-22 | Overedger control system, control method and overedger |
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| CN201810651154.5A CN108560151B (en) | 2018-06-22 | 2018-06-22 | Overedger control system, control method and overedger |
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