CN108560151B - Overedger control system, control method and overedger - Google Patents
Overedger control system, control method and overedger Download PDFInfo
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- CN108560151B CN108560151B CN201810651154.5A CN201810651154A CN108560151B CN 108560151 B CN108560151 B CN 108560151B CN 201810651154 A CN201810651154 A CN 201810651154A CN 108560151 B CN108560151 B CN 108560151B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000004744 fabric Substances 0.000 claims abstract description 110
- 238000009958 sewing Methods 0.000 claims abstract description 82
- 230000007246 mechanism Effects 0.000 claims abstract description 71
- 238000003825 pressing Methods 0.000 claims description 67
- 230000008569 process Effects 0.000 claims description 14
- 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 6
- 238000009957 hemming Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000009964 serging Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 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
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 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
The invention provides an overedger control system, a control method and an overedger. The overedger control system comprises an overedger for carrying out sewing operation, a feeding mechanism for conveying cloth and a main control module; the main control module is used for moving the feeding mechanism in the X direction and the Y direction relative to the overedger and/or rotating the feeding mechanism in the Z axis relative to the overedger, wherein the X direction, the Y direction and the Z direction are mutually perpendicular, the X direction and the Y direction are parallel to the plane where the cloth is located, and the Z direction is perpendicular to the plane where the cloth is located. The overedger control system, the control method and the overedger have higher production efficiency and processing precision.
Description
Technical Field
The invention relates to the technical field of sewing equipment, in particular to an overedger control system, a control method and an overedger.
Background
The hemming machine is commonly called a serging machine, a hemming machine and a serging machine, has the main functions of preventing the stitch head of the garment from fuzzing, and can be used for hemming and can also be applied to hemming processing of fabrics such as a T-shirt, sportswear underwear and knitting. Along with the increase of labor cost, how to improve the working efficiency and reduce errors caused by manual operation becomes a target pursued by various processing enterprises, and is also a strong wish of towel and shawl processing industry.
In order to finish processing a towel, rag or square towel, four side seams are generally needed, and most of the corner parts are required to be processed into round corners with radians, and the four round corners are required to be consistent in radian and symmetrical. However, a common overedger can only sew straight lines, can not sew automatic corners and round corners with any radian, and at present, a processing plant basically operates the overedger by a skilled worker, and manually operates to drive towels, shawl and the like to rotate at a place where the corners are required according to requirements.
At present, aiming at the edge wrapping, when a plurality of edges are required to be continuously sewn and the sewing at the corner is required, the manual intervention is completely performed, and the hand of a person is used for controlling the corner movement of towels, shawl and the like according to the current sewing rotating speed, so that the whole processing has the following defects: when the processing requirement is higher, the sewing speed of the overedger is higher (more than 3000 rpm), so that the speed-down sewing is required at the corner to ensure the processing quality, so that the corner action can be completed better, and the production efficiency is greatly reduced; and because the rotation angle is completely realized by manual intervention, the consistency of the rotation angle cannot be ensured, and the defective product rate is higher.
Disclosure of Invention
The invention provides a control system and a control method of an overedger, and the overedger has higher production efficiency and processing precision.
The invention provides an overedger control system, 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 in the X direction and the Y direction relative to the overedger and/or rotating the feeding mechanism in the Z axis relative to the overedger, wherein the X direction, the Y direction and the Z direction are mutually perpendicular, the X direction and the Y direction are parallel to the plane where the cloth is located, and the Z direction is perpendicular to the plane where the cloth is located.
Because the feeding mechanism and the main control module are added for the overedger, when in 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 the cloth on the feeding mechanism can be driven to move linearly relative to the sewing needle of the overedger, thereby realizing linear sewing; 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 the 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 the whole process, manual feeding is not needed, the operation is simple, the requirement on personnel is reduced, the production efficiency is greatly improved because the rotating speed of the overedger is not required to be specially reduced when a corner or a curve part is machined, and in addition, the whole system is controlled by a main control module to complete the sewing of the curve or the corner without manual intervention, so that the finished product rate is high and the machining precision is high.
Optionally, the feeding mechanism comprises 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 used for pressing the cloth on the feeding workbench and can drive the cloth to move together relative to the overedger, the X-direction feeding motor is used for driving the pressing frame to perform translation along the X-direction relative to the overedger, the Y-direction feeding motor is used for driving the pressing frame to perform translation along the Y-direction relative to the overedger, and the Z-direction feeding motor is used for driving the pressing frame to rotate relative to the overedger by taking the Z-direction as a rotating shaft. Therefore, the main control module only drives the feeding motor to drive the dynamic frame to translate along the X direction and the Y direction relative to the overedger so as to drive the cloth to move linearly, or drives the feeding motor to drive the dynamic frame to translate along the X direction and the Y direction relative to the overedger so as to rotate by taking the Z direction as a rotating shaft, so that the cloth can be driven to move in a curve.
Optionally, the friction coefficient of the surface of the press frame contacting the cloth is smaller than the friction coefficient of the surface of the feeding workbench contacting the cloth. Therefore, when the cloth is clamped between the pressing frame and the feeding workbench, taking the 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 friction resistance of the pressing frame on the cloth is larger than that of the feeding workbench on the cloth, and the cloth moves along with the pressing frame to translate along the X direction relative to the overedger. For the reason that the Y-direction feeding motor and the Z-direction feeding motor drive the press frame to move is the same, the cloth can move correspondingly along with the press 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 very smooth, the friction coefficient of the surface of the pressing frame, which is contacted 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 dropping.
Optionally, the X-direction feeding motor, the Y-direction feeding motor and the Z-direction feeding motor are all stepping motors, and the main control module is used for performing 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, is low in cost, is convenient for large-scale use in mass production, and simultaneously adopts closed-loop motor control to enable the control process to be more timely and accurate.
Optionally, the overedger control system of the present invention further includes a cloth sensor for detecting the presence or absence of cloth at the placement location. When sewing starts, whether cloth exists in the cloth placing position area is detected by the cloth sensor, so that resources are wasted due to misoperation of a system and empty seams are avoided under the condition that the cloth does not exist in the placing position area.
Optionally, the overedger control system of the present invention further includes an X-position sensor for detecting a position of the feeding mechanism in an X-direction relative to the overedger, a Y-position sensor for detecting a position of the feeding mechanism in a Y-direction relative to the overedger, and a Z-position sensor for detecting an angle of the feeding mechanism in a Z-direction relative to the overedger;
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-position sensor, the Y-position sensor and the Z-position sensor.
Optionally, the overedger control system of the present invention further includes one or more of: a start switch, a scram switch and an operation panel, wherein the start 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. By the arrangement, an operator can intuitively see the setting condition of the system parameters, and is convenient for the operator to operate the system, so that the function of the control system is more perfect, the coping capability is enhanced, and the system is more reliable.
In another aspect, the invention provides an overedger, which comprises the overedger control system according to any one of the above aspects.
Another aspect of the present invention provides a control method of an overedger, including:
conveying the cloth to the working position of the overedger through a feeding mechanism;
the feeding mechanism is controlled to move along the plane of the cloth relative to the overedger so as to carry out the sewing of the linear part of the cloth; or,
the feeding mechanism is controlled to move along the plane direction of the cloth relative to the overedger and simultaneously rotate along the Z direction perpendicular to the plane of the cloth so as to sew corners or curves 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 perpendicular to each other.
The linear sewing is realized by controlling the feeding mechanism to realize the linkage of two axes in the X direction and the Y direction, and the corner or curve sewing is realized by controlling the feeding mechanism to realize the three-axis linkage in the X direction, the Y direction and the Z direction, so that the system can realize the sewing of any curve type.
Optionally, after sewing the cloth, the method further comprises: and controlling the feeding mechanism to move the sewn cloth to the discharging area.
Optionally, if the feeding mechanism rotates around the Z direction by a certain angle in the sewing process, the sewn cloth is moved to the unloading area, and specifically includes controlling the pressing frame for pressing the cloth to reversely rotate around the Z direction by the certain angle and then return to the sewing position.
Because the feeding mechanism rotates a certain angle relative to the Z direction in each sewing process, the feeding mechanism is supposed to rotate a certain angle in a clockwise direction, for example, A degrees, if the feeding mechanism rotates the pressing frame counterclockwise around the Z direction by the certain angle after the sewing is finished, the pressing frame rotates to the initial position after each operation is finished, namely, the position of the pressing frame in the Z direction is initialized.
The control system, the control method and the overedger realize the expansion application of the common overedger, and increase the control of the automatic feeding part and the automatic rotation angle, in particular, as the feeding mechanism and the main control module are added for the overedger, the main control module controls the feeding mechanism to move in the X direction and the Y direction relative to the overedger during sewing, so that the cloth on the feeding mechanism can be driven to move linearly relative to the sewing needle of the overedger, thereby realizing linear sewing; 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 cloth on the feeding mechanism can be driven to move in the curve relative to the 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, and the two can be alternately used for realizing the sewing of any pattern. In the whole process, the rotating speed of the overedger is not required to be reduced, so that the production efficiency is greatly improved, and in addition, the sewing of the curve or the corner is completed by the whole system controlled by the main control module without manual intervention, so that the yield 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 readily understood from the description of the preferred embodiment taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a control system of an overedger according to an embodiment of the present invention;
FIG. 2 is a block diagram of a control system for an overedger according to one embodiment of the present invention;
fig. 3 is a flowchart of a control method of an overedger according to a second embodiment of the present invention.
Reference numerals illustrate:
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of an overedger control system according to an embodiment of the present invention, and fig. 2 is a structural block diagram of an overedger control system according to an 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 pressing air valve 35 provided 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 a scram switch 16. The overedger control system is used to control a conventional overedger 1. The various components within the control system of the overedger are described in detail below.
First, the overedger 1 of the present invention can use a general overedger 1 widely used in industry for cost reduction. The overedger 1 is provided with a spindle motor 17 for driving the sewing needle to work, and the main control module 2 controls the main control motor 17 to control the sewing operation of the overedger 1. The hemming machine 1 is further provided with a known thread cutting air valve 18, a known presser foot raising air valve 19, a known thread loosening air valve 111, and a known thread absorbing air valve 112, and the main control module 2 controls these air valves to perform thread cutting operation, presser foot raising operation, thread loosening operation, thread absorbing operation, and the like during sewing. Since these gas valves are well established in the art, they will not be described in detail herein. The main control module 2 comprises a control board and a stepping drive board, wherein the control board controls each component part, each air valve and the like, and the stepping drive board controls a spindle motor, each feeding motor and the like of the overedger 1.
Next, the feeding mechanism 3 is described, as shown in fig. 1, in which 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. The present figure is only a schematic view of the structure of the present system, and for example, the main control module 2, the discharging portion, 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 are vertically provided extending upward from the lower portion of the feeding table 31, 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 provided below the feeding table 31 for driving the support rods 37 to horizontally move in the Y direction. An X-direction feeding motor 32 is provided on the support rods 37 at a position higher than the feeding 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 feeding motor 32 is configured to drive the frame pressing connection portion 311 to move horizontally in the X-direction. A Z-direction feeding motor 34 is provided above the frame pressing connection portion 311, a frame pressing 36 is further connected below the frame pressing connection portion 311, the frame pressing 36 presses the cloth 5 on the feeding table 31, and the Z-direction feeding motor 34 is used for driving the frame pressing 36 to rotate relative to the overedger 1 about a Z-direction rotation axis.
In the specific sewing process, when the X, Y, Z triaxial linkage is used for sewing a curve, if the Y-direction feeding motor 33 drives the supporting rod 37 to horizontally move along the Y direction, the pressing frame 36 drives the cloth 5 to horizontally move along the Y direction through the transmission of the cross beam 38 and the pressing frame connecting part 311, 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 also by taking the Z direction as the rotating shaft, so X, Y, Z triaxial linkage is realized, and the pressing frame 36 drives the cloth 5 to horizontally move relative to the overedger 1 by a curve for sewing a curve or a corner position.
When X, Y two-axis linkage is used for sewing straight lines, if the Y-direction feeding motor 33 drives the supporting rod 37 to horizontally move along the Y direction, the pressing frame 36 drives the cloth 5 to horizontally move along the Y direction through the transmission of the cross beam 38 and the pressing frame connecting part 311, and 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, so X, Y two-axis linkage is realized, and the pressing frame 36 drives the cloth 5 to linearly move relative to the overedger 1 for sewing straight line parts.
In summary, the main control module 2 (not shown) is used for moving the feeding mechanism 3 in the X-direction and the Y-direction relative to the overedger 1 and/or rotating the feeding mechanism 1 in the Z-axis relative to the overedger 1, that is, during the sewing process, the X-direction feeding motor 31 drives the press frame 36 to perform a translation in the X-direction relative to the overedger 1, the Y-direction feeding motor 33 drives the press frame 36 to perform a translation in the Y-direction relative to the overedger 1, and the Z-direction feeding motor 34 drives the press frame 36 to rotate about the Z-direction relative to the overedger 1. 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 performed; when the press frame 36 drives the cloth 5 to translate in the X direction and the Y direction relative to the overedger 1 and rotate around the Z direction relative to the overedger 1 as a rotating shaft, curve sewing is performed.
Alternatively, the X-direction feeding motor 32, the Y-direction feeding motor 33, and the Z-direction feeding motor 34 may be stepper motors, and the main control module 2 performs step-by-step 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 press frame 36 is further provided with a press valve 35 (not shown) for driving the press frame 36 to operate, and the press frame 36 can be controlled to be lifted or lowered as necessary. After the overedger 1 finishes sewing, the main control module 2 controls the feeding mechanism 3 to rotate the press frame 36 around the Z direction by a certain angle and then returns to the sewing starting point. Specifically, if during each sewing process, the press frame 36 rotates a certain angle relative to the Z direction, it is assumed that the press frame 36 rotates a certain angle around the Z direction, for example, a°, and if after sewing is completed, the press frame 36 rotates a certain angle around the Z direction counterclockwise, namely, a°, so that, after each operation is completed, the press frame 36 rotates back to the initial angular position, that is, the angular position of the press frame in the Z direction is initialized. In addition, the operation of the air valve 35 is also controlled by the main control module 2.
The feeding mechanism 3 formed as described above may be of another type, as long as the effect of driving the press frame 36 in the X-direction relative to the overedger 1 by the X-direction feeding motor 31, driving the press frame 36 in the Y-direction relative to the overedger 1 by the Y-direction feeding motor 33, and rotating the press frame 36 in the Z-direction relative to the overedger 1 by the Z-direction feeding motor 34 can be achieved. Other types or configurations of transmission between the feed motor and the press frame 36 are also possible.
Returning again to fig. 1, the operation panel 4 is used to set relevant parameters for the main control module 2, including the length, width, stitch length, corner radius, etc. of the cloth 5 (e.g., towel), and other control parameters. The start switch 11 is used for starting sewing, and the emergency stop switch 16 is used for performing braking control when an emergency occurs. The cloth sensor 12 is used for detecting whether the cloth 5 exists at the placement position, and the system can convey the cloth to the sewing position for sewing after detecting the existence of the cloth 5, which naturally requires an operator to place the cloth 5 according to the required position, and the cloth sensor 12 is generally placed at the center of the cloth placement position. Further, the overedger control system of the present embodiment further includes an X-position sensor 13, a Y-position sensor 14, and a Z-position sensor 15 for determining the starting position of the overedger 1. Specifically, when the overedger system is powered on, the X-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-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-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-position sensor 13, the Y-position sensor 14 and the Z-position sensor 15, and if the feeding mechanism 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 automatic edge-covering sewing of the shawl as an example. Fig. 3 is a flowchart of a control method of an overedger according to a second embodiment of the present invention. The control method of the overedger provided by the second embodiment of the present invention can be applied to the overedger in the first embodiment. As shown in fig. 3, after the system is powered on, the steps of automatic edge wrapping are as follows:
s601, conveying the cloth to a working position of an overedger through a feeding mechanism.
S602, controlling the feeding mechanism to move along the plane where the cloth is positioned relative to the overedger so as to carry out linear part sewing of the cloth; or,
the feeding mechanism is controlled to move along the plane direction of the cloth relative to the overedger and simultaneously rotate along the Z direction perpendicular to the plane of the cloth so as to sew corners or curves 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 perpendicular to each other.
The above steps are described in detail below by means of a specific practical procedure.
Specifically, the main control module can set relevant sewing parameters for the main control module through the operation panel, including setting the length, width, corner radius, stitch length and other information of the square towel, then placing the square towel in the discharging area of the feeding mechanism according to the requirements, pressing the starting switch after placing the square towel, automatically finding the initial position of the overedger according to the feedback signals of the X-position sensor, the Y-position sensor and the Z-position sensor, controlling the X-direction feeding motor and the Y-direction feeding motor to drive the feeding mechanism to run to the working area of the overedger, and entering the sewing state. After that, the main control module detects and confirms whether the feeding mechanism has the shawl through the cloth sensor, if so, the next step is carried out, and if not, the shawl is in a waiting state. When the main control module confirms that the square towel exists, the pressing air valve is controlled to be opened, the pressing frame is pressed down and presses the square towel, and meanwhile, the pressing foot lifting air valve is controlled to lift the pressing foot of the overedger. Then, the pressing foot of the overedger is pressed down, the main shaft starts to be sewn, and meanwhile, the air suction valve is started to suck the wire braid, in addition, after the sewing is started, a worker can continue to place the square towel at the placing position, so that the next sewing is convenient.
Specifically, when the straight line is sewn, 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 translate along the X-direction and the Y-direction relative to the overedger, namely to move along the plane where the square towel is positioned, and at the moment, the sewing needle moves up and down with the sewing thread to carry out straight line part sewing on one edge of the square towel.
When the sewing machine is used for sewing a corner, the main control module controls the Z-direction feeding motor to start, 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 the sewing needle moves up and down with a sewing thread at the moment so as to sew the corner or curve part of the cloth. After the corner is sewn, the sewing of the straight line part and the corner part is repeated until the four edges of the square towel are sewn.
After the sewing is completed, the cutting line can be started and the air suction valve can be closed. And 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 shawl to the discharging area.
Finally, the pressing frame is controlled to be lifted and reversely rotated for 360 degrees relative to the Z axis of the overedger (realized by controlling the Z-direction feeding motor) to return to the seam lifting position, and at the moment, an operator can take the sewn product.
Here, because the square towel has four corners to be sewn, the pressing frame rotates four times in total in the whole sewing process, and rotates 360 degrees in an accumulated way, so that the pressing frame is controlled to lift up and rotate 360 degrees reversely relative to the Z axis of the overedger. If other types of curves are sewn, the pressing frame rotates a certain angle relative to the Z direction in each sewing process, a certain angle, such as A DEG, is supposed to be accumulated and rotated around the Z direction in the clockwise direction, and if the pressing frame rotates a certain angle, namely A DEG, counterclockwise around the Z direction after the sewing is finished, so that the pressing frame rotates back to the initial angle position after each operation is finished, namely the angle position of the pressing frame in the Z direction is initialized.
In the above process, if the system is set to the automatic mode, whether the cloth is automatically sewn or not can be detected according to the cloth sensor, and if the cloth is not automatically sewn, whether the cloth is automatically sewn or not can be controlled by the starting switch. It will be appreciated by those skilled in the art that the sewing process of the present embodiment is described with respect to the corner of a square towel, but is not limited to the corner of a square towel, and may be adapted for sewing other types of cloth such as towels.
The invention also provides an overedger, which comprises an overedger body and the overedger control system according to the first embodiment.
In the system, in order to facilitate transformation on the basis of the existing overedger and realize an automatic edge wrapping function, the system can open a control signal to be introduced into the pedal control end of the control system of the existing overedger and realize control of the overedger. Therefore, the system can be widely used for refitting and upgrading of a single machine type of the overedger.
In addition, the invention is illustrated by taking four edges and corners of the square towel wrapping seam as examples, and the curve part refers to a round corner part 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, stitching T-shirts, sportswear undergarments, knit fabrics, special patterns, etc., or special shaped curves. In the present invention, the linear portion is processed first and then the curved portion is processed, but in actual operation, the curved portion may be processed first and then the linear portion is processed.
It will be understood by those skilled in the art that the embodiment herein uses the feeding motor to drive the pressing frame to drive the cloth to translate along X, Y and rotate around Z, so long as the feeding motor can drive the feeding mechanism to drive the cloth to move along X and Y directions relative to the overedger and/or rotate relative to the Z axis of the overedger, or the feeding workbench in the feeding motor can drive the feeding mechanism to drive the cloth to translate along X, Y and rotate around Z direction, and the pressing frame only plays a role of pressing the cloth, and such transformation falls within the protection scope of the invention.
For the control system of the overedger in the prior art, the sewing can be realized only by controlling the spindle to run, but only unidirectional straight line sewing can be realized, and corner sewing cannot be automatically finished.
In the description of the present invention, it should 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 the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, in the present invention, unless explicitly stated and limited otherwise, the terms "connected," "secured," "mounted," and the like are to be construed broadly, and may be, for example, mechanically or electrically; either directly or indirectly, through intermediaries, or both, unless otherwise specifically defined, the meaning of the terms in this disclosure is to be understood by those of ordinary skill in the art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.
Claims (5)
1. The overedger control system is characterized by comprising a feeding mechanism for conveying cloth, a cloth sensor for detecting the presence or absence of the cloth at a placing position, an X-position sensor, a Y-position sensor, a Z-position sensor and a main control module; the main control module is used for moving the feeding mechanism in the X direction and the Y direction relative to the overedger and/or rotating the feeding mechanism in the Z axis relative to the overedger, wherein the X direction, the Y direction and the Z direction are mutually perpendicular, the X direction and the Y direction are parallel to the plane where the cloth is located, and the Z direction is perpendicular to the plane where the cloth is located; the feeding mechanism comprises a feeding workbench, a pressing frame, an X-direction feeding motor, a Y-direction feeding motor and a Z-direction feeding motor, wherein the feeding workbench is used for bearing cloth;
when the pressing frame drives the cloth to be sewn to a corner relative to the overedger, the main control module controls the Z-direction feeding motor to start, controls the feeding mechanism to translate along the X direction and the Y direction relative to the overedger and simultaneously rotate relative to the overedger by taking the Z direction as a rotating shaft, and a sewing needle of the overedger moves up and down with a sewing thread so as to sew the corner or the curve part of the cloth;
the X-direction feeding motor is used for driving the pressing frame to translate along the X direction relative to the overedger, the Y-direction feeding motor is used for driving the pressing frame to translate along the Y direction relative to the overedger, and the Z-direction feeding motor is used for driving the pressing frame to rotate relative to the overedger by taking the Z direction as a rotating shaft;
the friction coefficient of the surface of the pressing frame, which is contacted with the cloth, is smaller than that of the surface of the feeding workbench, which is contacted with the cloth;
the X-position sensor is used for detecting the position of the feeding mechanism relative to the overedger in the X direction, the Y-position sensor is used for detecting the position of the feeding mechanism relative to the overedger in the Y direction, and the Z-position sensor is used for detecting the angle of the feeding mechanism relative to the overedger 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-position sensor, the Y-position sensor and the Z-position sensor;
also comprises one or more of the following: a start switch, a scram 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.
2. An overedger comprising the overedger control system of claim 1.
3. A method of controlling an overedger using the overedger control system of claim 1, comprising:
conveying the cloth to a working position of an overedger through a feeding mechanism;
the feeding mechanism is controlled to move relative to the overedger along the plane where the cloth is positioned so as to carry out the sewing of the linear part of the cloth; or,
the feeding mechanism is controlled to move along the plane direction of the cloth relative to the overedger and simultaneously rotate along the Z direction vertical to the plane of the cloth so as to carry out the sewing of the corner or curve part of the cloth, wherein the X direction and the Y direction are included along the plane direction of the cloth, and are mutually vertical; when the pressing frame drives the cloth to be sewn to a corner relative to the overedger, the main control module controls the Z-direction feeding motor to start, controls the feeding mechanism to translate along the X direction and the Y direction relative to the overedger and simultaneously rotate relative to the overedger by taking the Z direction as a rotating shaft, and a sewing needle of the overedger moves up and down with a sewing thread so as to sew the corner or the curve part of the cloth.
4. The control method of an overedger according to claim 3, characterized in that after the sewing of the cloth is completed, further comprising: and controlling the feeding mechanism to move the sewn cloth to the discharging area.
5. The control method of the overedger according to claim 4, wherein if the feeding mechanism rotates around the Z direction by a certain angle during the sewing process, the moving the sewn cloth to the unloading area includes controlling the pressing frame for pressing the cloth to reversely rotate around the Z direction by the certain angle and then returning to the sewing 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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