CN111890696A - Device with pattern and cutting automatic alignment correction system and alignment correction method - Google Patents

Device with pattern and cutting automatic alignment correction system and alignment correction method Download PDF

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Publication number
CN111890696A
CN111890696A CN202010759663.7A CN202010759663A CN111890696A CN 111890696 A CN111890696 A CN 111890696A CN 202010759663 A CN202010759663 A CN 202010759663A CN 111890696 A CN111890696 A CN 111890696A
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China
Prior art keywords
pattern
line
coordinates
abs
cutter
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CN202010759663.7A
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Chinese (zh)
Inventor
王凤东
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Tianjin Rongda M & E Technology Co ltd
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Tianjin Rongda M & E Technology Co ltd
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Priority to CN202010759663.7A priority Critical patent/CN111890696A/en
Publication of CN111890696A publication Critical patent/CN111890696A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/007—Control means comprising cameras, vision or image processing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4807—Headwear
    • B29L2031/4835—Masks

Abstract

A first industrial camera and a first matched light source for shooting relative position patterns of sealing marks and face marks of mask cloth are arranged at the position of the next station of a sealing roller and an ultrasonic welding machine station of a KN95 mask machine, a second industrial camera and a second matched light source for shooting relative position patterns of face marks and cutter marks of the mask cloth are arranged at the position of the next station of a cutter roller and a cutter pillow station of the KN95 mask machine, a first adjusting motor is arranged at the position of the upper station of the sealing roller and the ultrasonic welding machine station, a second adjusting motor is arranged at the position of the upper station of the cutter roller and the cutter pillow station, an upper computer is respectively connected with the first industrial camera, the second industrial camera and a lower computer, and the upper computer is respectively connected with the first adjusting motor and the second adjusting motor. The invention reduces the number of operators, reduces the labor intensity, improves the product quality and the production stability, and improves the production efficiency.

Description

Device with pattern and cutting automatic alignment correction system and alignment correction method
Technical Field
The invention relates to correction of patterns and cuts in a cutting machine. And more particularly to an apparatus having a pattern and cut auto-alignment correction system for flexible materials and an alignment correction method.
Background
With the rapid development of the industry, the structures of various industrial and civil products are more and more complex, various patterns need to be attached to the surfaces of some flexible materials, and the materials need to be accurately cut according to the patterns. For example, the surface of a KN95 mask and a multi-layer material (such as non-woven fabric) needs to be stamped and sewn by an ultrasonic welding machine to form various patterns, the patterns need to be positioned accurately, and the mask needs to be cut accurately after being stamped. Most of equipment on the current market adopts a manual adjustment method, the relative position and the cutting position between patterns are observed by human eyes, and the manual adjustment equipment is corrected after deviation is found, so that the efficiency is low, the labor intensity of personnel is high, the personnel are easy to fatigue, and the product quality is difficult to ensure.
Disclosure of Invention
The invention provides a device with a pattern and cutting automatic alignment correction system and an alignment correction method, which can automatically adjust the correct matching of patterns and cut edges.
The technical scheme adopted by the invention is as follows: the device comprises a KN95 mask machine and is further provided with an upper computer, a first industrial camera and a first matched light source which are used for shooting relative position patterns of sealing marks and surface marks of mask cloth are arranged at the position of the next station of a sealing roller and an ultrasonic welding machine station of the KN95 mask machine, a second industrial camera and a second matched light source which are used for shooting relative position patterns of the surface marks and the cutter marks of the mask cloth are arranged at the position of the next station of a cutter roller and a cutter pillow station of the KN95 mask machine, a first adjusting motor which is used for adjusting the relative positions of the sealing marks and the surface marks is arranged at the position of the upper station of the sealing roller and the ultrasonic welding machine station, a second adjusting motor which is used for adjusting the relative positions of the cutter marks and the surface marks is arranged at the position of the upper station of the cutter roller and the cutter pillow station, and the upper computer are respectively connected with the first industrial camera, the second camera and the second adjusting motor, The lower computer is respectively connected with the first adjusting motor and the second adjusting motor.
An alignment correction method for a device having a pattern and cut auto-alignment and correction system, comprising the steps of:
1) adjusting the relative position between the seal pattern and the face pattern in the pattern, comprising:
(1.1) setting a coordinate origin (0,0) in a viewing range of a first industrial camera to form X, Y coordinates, wherein the viewing range is a rectangle with the height of 2H and including a seal line of a former pattern and a face line of a latter pattern in two adjacent patterns, and the center of the rectangle between the seal line and the face line is taken as the origin (0,0) to form X, Y coordinates; (ii) a
(1.2) controlling a first industrial camera to take a picture by the upper computer;
(1.3) the upper computer obtains an image, processes the image by using visual processing software, and respectively obtains the coordinates (A) of two points of the seal line and the surface line image in the image at the upper line and the lower line of the view range from dark to light1,H)、(A3,-H)、(B2,H)、(B4-H), and the coordinates (A) of the two points of the seal and face images turned from light to dark2,H)、(A4,-H)、(B1,H)、(B3-H), H being the absolute values of the upper and lower lines of the viewing range Y on the coordinate;
(1.4) calculating the coordinates (A) of two dark points to light points of the seal fringe image1,H)、(A3-H) and coordinates of two points turned from light to dark (A)2,H)、(A4-H) lines forming a seal pattern parallelogram (A)1A2A4A3) The coordinates of the center point a 0;
(1.5) calculating the coordinates (B) of two dark points of the surface texture image2,H)、(B4-H) and coordinates of two points turned from light to dark (B)1,H)、(B3-H) a quadrilateral (B) formed by connecting lines1B2B4B3) The coordinates of the center point B0;
(1.6) calculation of A0And B0Distance D of (D):
D＝ABS(A0)+ABS(B0)；
(1.7) calculating D and the standard value D0The deviation value delta D;
(1.8) the upper computer transmits the deviation value delta D to the lower computer;
(1.9) the lower computer sends out a command to drive the first adjusting motor to rotate forwards and backwards, and positions of the sealing lines and the surface lines are adjusted until the deviation value delta D reaches a set range.
2) Adjusting the relative position between the face lines and the cutter marks in the pattern, comprising:
(2.1) setting a coordinate origin (0,0) in a viewing range of a second industrial camera to form X, Y coordinates, wherein the viewing range is a rectangle with the height of 2H and including a sealing line of a front pattern and a cutter trace of a rear pattern in two adjacent patterns, and the center of the rectangle between the sealing line and the cutter trace is taken as the origin (0,0) to form X, Y coordinates;
(2.2) controlling a second industrial camera to take a picture by the upper computer;
(2.3) the upper computer obtains an image, the image is processed by using visual processing software, and coordinates (A) of points, which are formed by turning the cutter trace image from dark to light, in the image at the upper line and the lower line of the view finding range are respectively obtained1′,H′)、(A2', -H'), coordinates (B) of points of the image of the face grain at the upper and lower lines of the finder range, which are turned from dark to light, are obtained2′,H′)、(B4', -H') and coordinates (B) of points turned from light to dark1′,H′)、(B3', -H '), H ' is the absolute value of the upper and lower line of the viewing range Y-direction coordinate;
(2.4) calculating coordinates (A) of two points of the cutter mark image which are dark to bright1′,H′)、(A2', -H') center point A of the line0The coordinates of';
(2.5) calculating two coordinate points (B) of the surface texture image from dark to light2′,H′)、(B4', -H') and two coordinate points (B) turned from light to dark1′,H′)、(B3', -H') is connected to form a quadrilateral (B)2′B1′B3′B4') center point B0The coordinates of';
(2.6) calculation of A0' and B0Distance D of':
D′＝ABS(A0′)+ABS(B0′)；
(2.7) calculating D' and the standard value D0'deviation value Δ D';
(2.8) the upper computer transmits the deviation value delta D' to the lower computer;
(2.9) the lower computer sends out a command to drive the first adjusting motor to rotate forwards and backwards, and positions of the surface patterns and the cutter marks are adjusted until the deviation value delta D' reaches a set range.
The invention relates to a device with an automatic pattern and cutting alignment correction system and an alignment correction method.A host computer is used as data processing equipment, image data acquired by an industrial camera is contrasted and analyzed through a program to calculate a deviation value, the deviation value required to be adjusted is transmitted to a lower computer (a PLC system), the lower computer sends an instruction according to the deviation value to control the operation of an adjusting motor and adjust the feeding position of subsequent materials, so that the deviation is adjusted, and the correct matching of automatically adjusted patterns and patterns, and the patterns and cutting edges is realized. By doing so, it is possible to ensure that the pattern deviation does not exceed the previously set allowable deviation value, thereby improving the product quality and the stability of continuous production. The invention not only reduces the number of operators and the labor intensity, but also improves the product quality and the production stability to a great extent and improves the production efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the apparatus for automatic alignment and correction of pattern and cut of the present invention;
fig. 2 is a schematic view of KN95 mask pattern and cut lines;
FIG. 3 is a schematic view of the installation location of a first industrial camera and a first mating light source of the present invention;
FIG. 4 is a schematic view of the installation location of a second industrial camera and a first mating light source of the present invention;
FIG. 5 is a schematic view of the mounting positions of the first and second adjustment motors of FIGS. 3 and 4;
FIG. 6 is a schematic view of the relative position between the seal pattern and the face pattern for viewing and calculating;
FIG. 7 is a schematic view of the viewing and calculation of the relative position between the face print and the cutter mark according to the present invention;
FIG. 8 is a flow chart of an alignment correction method for a device having a pattern and crop auto-alignment and correction system of the present invention.
In the drawings
1: first industrial camera 2: second Industrial Camera
3: mask cloth 4: non-woven fabric for mask
5: mouse 6: display device
7: keyboard 8: upper computer
9: first adjustment motor 10: sealing roller
11: second adjustment motor 12: cutter roller
13: ultrasonic welder 14: cutter pillow
15: first mating light source 16: second mating light source
17: first lead screw 18: first cloth adjusting roller
19: first cloth pressing roller 20: second screw rod
21: second cloth roll 22: second cloth pressing roller
23: first manual gear shaft 24: first bevel gear set
25: second manual gear shaft 26: second bevel gear set
27: sealing lines 28: surface pattern
29: viewing range 30: cutter mark
Detailed Description
The following describes the device and method for automatic alignment and correction of pattern and cut according to the present invention in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1, 2, 3, 4, 5, the device with the pattern and cutting automatic alignment and correction system of the present invention comprises a KN95 mask machine 1, and is further provided with an upper computer 8, on a workbench at a position next to a position of a sealing roller 10 and an ultrasonic welding machine 13 of the KN95 mask machine, a first industrial camera 2 and a first mating light source 15 for capturing a relative position (phase) pattern of a sealing grain and a face grain of a mask cloth are provided through a bracket, on the workbench at a position next to a position of a cutter roller 12 and a cutter pillow 14 of the KN95 mask machine, a second industrial camera 3 and a second mating light source 16 for capturing a relative position (phase) pattern of a face grain and a cutter trace of the mask cloth are provided through a bracket, and the first industrial camera 2 and the first mating light source 15 are respectively located at two sides of the mask cloth correspondingly; the second industrial camera 3 and the second matched light source 16 are respectively and correspondingly positioned at two sides of the mask cloth.
The first industrial camera 2 and the first mating light source 15, and the second industrial camera 3 and the second mating light source 16 are mounted on a KN95 mask machine, and the mask cloth 4 passes through between the camera lens and the light source when being conveyed (as shown in fig. 3 and 4). Because the hot stamped pattern is very thin and semi-transparent, the camera can acquire clear patterns and cut images after the light source irradiates the mask cloth 4 from the back of the cloth.
The first adjusting motor 9 used for adjusting the relative position (phase) of the sealing mark and the face mark is arranged at the last station of the sealing roller 10 and the ultrasonic welder 13, the second adjusting motor 11 used for adjusting the relative position (phase) of the cutter mark and the face mark is arranged at the last station of the cutter roller 12 and the cutter pillow 14, the upper computer 8 is respectively connected with the first industrial camera 2, the second industrial camera 3 and the lower computer (mask machine control unit), and the lower computer is respectively connected with the first adjusting motor 9 and the second adjusting motor 11.
The first adjustment motor 9 and the second adjustment motor 11 are part of the mask machine and are used for controlling the relative positions (phases) of the patterns and the cutting knife during cloth feeding.
As shown in fig. 3 and 5, the output shaft of the first adjusting motor 9 is connected to one end of a first manual gear shaft 23 in the KN95 mask machine, and the first manual gear shaft 23 is correspondingly connected to the upper and lower ends of the first cloth adjusting roller 18 through two sets of first bevel gear sets 24 and a first lead screw 17, respectively, for adjusting the forward and backward movement of the first cloth adjusting roller 18; as shown in fig. 4 and 5, the output shaft of the second adjusting motor 11 is connected to one end of a second manual gear shaft 25 in the KN95 mask machine, and the second manual gear shaft 25 is correspondingly connected to the upper and lower ends of the second cloth adjusting roller 21 through two sets of second bevel gear sets 26 and a second lead screw 20, respectively, for adjusting the forward and backward movement of the second cloth adjusting roller 21.
The first cloth adjusting roller 18, the second cloth adjusting roller 21, the first cloth pressing roller 19, the second cloth pressing roller 22, the first screw rod 17 and the second screw rod 20 are original mechanisms of the mask machine, shafts of the first cloth pressing roller 19 and the second cloth pressing roller 22 are fixed, the first cloth adjusting roller 18 and the second cloth adjusting roller 21 are correspondingly installed on the first screw rod 17 and the second screw rod 20, the first screw rod 17 and the second screw rod 20 are connected with the first adjusting motor 9 and the second adjusting motor 11, and the first adjusting motor 9 and the second adjusting motor 11 drive the first cloth adjusting roller 18 and the second cloth adjusting roller 21 to move forwards or backwards. The mask cloth is folded and passed through a gap of a roller group (shown in fig. 5) formed by the first cloth adjusting roller 18 and the second cloth adjusting roller 21 and the first cloth pressing roller 19 and the second cloth pressing roller 22, the folding amount of the cloth in the roller group is increased when the first cloth adjusting roller 18 and the second cloth adjusting roller 21 advance, and the folding amount of the cloth in the roller group is reduced when the first cloth adjusting roller 18 and the second cloth adjusting roller 21 retreat. When the folding amount of the cloth is changed, the phases between the seal pattern and the face pattern, and between the cutting position and the face pattern are changed. Thereby achieving adjustment of the phase between the patterns.
The sealing roll 10 and the cutter roll 12 are also part of the mask machine, respectively. The sealing roller 10 is provided with a sealing pattern, when the mask cloth passes between the sealing roller 10 and the ultrasonic welding machine 13, the sealing roller 10 rolls synchronously to thermoprint the sealing pattern on the mask cloth, so that the left and right mask cloths are bonded together to seal; when the mask cloth passes through the space between the cutter roller 12 and the cutter pillow 14, the cutter roller 12 and the cutter pillow 14 synchronously roll, and the blades can completely cut the formed mask from the cloth.
The upper computer 8 controls the first industrial camera 2 and the second industrial camera 3 to rapidly and discontinuously acquire images of the continuously fed cloth at the same position according to a set time interval, and if the main shaft roller of the equipment rotates 180 degrees, the shooting is carried out for 1 time. The collected images are processed, and the processing results are sent to a lower computer to drive a first adjusting motor 9 and a second adjusting motor 11 to respectively adjust the advancing and retreating of a corresponding first cloth adjusting roller 18 and a corresponding second cloth adjusting roller 21 so as to change the folding amount of the mask cloth and achieve the purpose of adjusting the relative positions (phases) of the patterns and the cutting knife.
The upper computer is arranged beside the mask machine. When the mask machine operates, the upper computer controls the first industrial camera 2 and the second industrial camera 3 to rapidly and discontinuously acquire images of continuously fed cloth (the main shaft roller of the device rotates 180 degrees every time and takes a picture for 1 time), continuously acquire images of the same position of the mask and process the acquired images on the upper computer in real time. The upper computer captures the characteristic points of the patterns through image processing, carries out real-time position judgment on the fed cloth, carries out prejudgment on the deviation trend of the characteristic points, calculates the position space between the patterns and the marks of the cutting knife, calculates the deviation value between the position space and the set standard distance, transmits the sheet difference value to a mask machine control unit (a PLC system is also called as a lower computer and is not shown), and sends out instructions to respectively control the first adjusting motor 9 and the second adjusting motor 11 to drive the first screw rod 17 and the second screw rod 20 to rotate forwards or backwards and drive the first cloth adjusting roller 18 and the second cloth adjusting roller 21 to move forwards or backwards so as to change the folding amount of the cloth in the cloth adjusting roller group to adjust the relative positions between the patterns and between the patterns and the cutting knife, thereby achieving an ideal state. During the period, the first industrial camera 2 and the second industrial camera 3 completely acquire and acquire data, and the upper computer feeds the data back to the lower computer for control compensation after calculation, so that manual intervention is not needed, and complete automation and intellectualization are realized.
The alignment correction method for the device with the automatic alignment and correction system for pattern and cut of the invention, as shown in FIG. 8, comprises the following steps:
1) the adjustment of the relative position (phase) between the seal pattern 27 and the face pattern 28 in the pattern, as shown in fig. 6, includes:
(1.1) setting a coordinate origin (0,0) in a viewing range 29 of the first industrial camera to form X, Y coordinates, wherein the viewing range is a rectangle with the height of 2H and including a seal line of a former pattern and a face line of a latter pattern in two adjacent patterns, and the center of the rectangle between the seal line and the face line is taken as the origin (0,0) to form X, Y coordinates; (ii) a
(1.2) controlling a first industrial camera to take a picture by the upper computer;
(1.3) the upper computer obtains an image, visual processing software (such as LABVIEW, OpenCV, Halcon and the like) is used for processing the image, and coordinates (A) of two points of a seal line image and a surface line image which are turned from dark to light in the image at the upper line and the lower line of a view range are obtained respectively1,H)、(A3,-H)、(B2,H)、(B4-H), and the coordinates (A) of the two points of the seal and face images turned from light to dark2,H)、(A4,-H)、(B1,H)、(B3-H), H being the absolute values of the upper and lower lines of the viewing range Y on the coordinate;
(1.4) calculating the coordinates (A) of two dark points to light points of the seal fringe image1,H)、(A3-H) and coordinates of two points turned from light to dark (A)2,H)、(A4-H) lines forming a seal pattern parallelogram (A)1A2A4A3) The coordinates of the center point a 0; the method comprises the following steps:
(1.4.1) calculating Point (A)1H) and (A)3-H) coordinate value (A) of the intersection of the line and the X-axis1-3,0)
A1-3＝A3-(ABS(A1-A3))/2
(1.4.2) calculating Point (A)2H) and (A)4-H) coordinate value (A) of the intersection of the line and the X-axis2-4,0)
A2-4＝A4-(ABS(A2-A4))/2
(1.4.3) calculating the center Point A0Coordinate (A) of0,0)
A0＝A2-4-(ABS(A1-3-A2-4))/2。
(1.5) calculating the coordinates (B) of two dark points of the surface texture image2,H)、(B4-H) and coordinates of two points turned from light to dark (B)1,H)、(B3-H) a quadrilateral (B) formed by connecting lines1B2B4B3) Is/are as followsCoordinates of center point B0; the method comprises the following steps:
(1.5.1) calculating Point (B)1H) and (B)3-H) coordinates (B) of the intersection of the connecting line with the X-axis1-3,0)
If B is present3>＝B1Then B is1-3＝B3-(ABS(B1-B3))/2
Otherwise B1-3＝B3+(ABS(B1-B3))/2
(1.5.2) calculating Point (B)2H) and (B)4-H) seating of the intersection of the line with the X-axis (B)2-4,0)
If B is present4>＝B2Then B is2-4＝B4-(ABS(B2-B4))/2
Otherwise B2-4＝B4+(ABS(B2-B4))/2
(1.5.3) calculating the center point B0Coordinate (B)0,0)：
B0＝B2-4+(BBS(B1-3-B2-4))/2。
(1.6) calculation of A0And B0Distance D of (D):
D＝ABS(A0)+ABS(B0)；
(1.7) calculating D and the standard value D0The deviation value delta D;
(1.8) the upper computer transmits the deviation value delta D to the lower computer;
(1.9) the lower computer sends out a command to drive the first adjusting motor to rotate forwards and backwards, and positions of the sealing lines and the surface lines are adjusted until the deviation value delta D reaches a set range.
2) Adjusting the relative position (phase) between the land pattern and the cutter mark in the pattern, as shown in fig. 7, includes:
(2.1) setting a coordinate origin (0,0) in a viewing range 29 of the second industrial camera to form X, Y coordinates, wherein the viewing range is a rectangle with the height of 2H and including a sealing line of a former pattern and a cutter trace of a latter pattern in two adjacent patterns, and the center of the rectangle between the sealing line and the cutter trace is taken as the origin (0,0) to form X, Y coordinates;
(2.2) controlling a second industrial camera to take a picture by the upper computer;
(2.3) the upper computer obtains images, visual processing software (such as LABVIEW, OpenCV, Halcon and the like) is used for processing the images, and coordinates (A) of points, which are formed by turning the cutter trace images from dark to light, of the images at the upper line and the lower line of the viewing range are obtained respectively1′,H′)、(A2', -H'), coordinates (B) of points of the image of the face grain at the upper and lower lines of the finder range, which are turned from dark to light, are obtained2′,H′)、(B4', -H') and coordinates (B) of points turned from light to dark1′,H′)、(B3', -H '), H ' is the absolute value of the upper and lower line of the viewing range Y-direction coordinate; since the cutter mark 30 is a line, the pattern is very narrow, and therefore only 2 coordinate points are taken.
(2.4) calculating coordinates (A) of two points of the cutter mark image which are dark to bright1′,H′)、(A2', -H') center point A of the line0The coordinates of'; the method comprises the following steps:
(2.4.1) if A1′<＝A2' then A0′＝A1′+(ABS(A1′-A2′))/2；
(2.4.2) if A1′>A2' then A0′＝A1′+(ABS(A1′-A2′))/2。
(2.5) calculating two coordinate points (B) of the surface texture image from dark to light2′,H′)、(B4', -H') and two coordinate points (B) turned from light to dark1′,H′)、(B3', -H') is connected to form a quadrilateral (B)2′B1′B3′B4') center point B0The coordinates of'; the method comprises the following steps:
(2.5.1) calculating Point (B)1', H') and (B)3'H' -line and X-axis1-3′,0)
If B3'>＝B1', then B1-3′＝B3′-(ABS(B1′-B3′))/2
Otherwise B1-3′＝B3′+(ABS(B1′-B3′))/2
(2.5.2) calculating Point (B)2', H') and (B)4'H' -line and X-axis2-4′,0)
If B is present4′>＝B2', then B2-4′＝B4′-(ABS(B2′-B4′))/2
Otherwise B2-4′＝B4′+(ABS(B2′-B4′))/2
(2.5.3) calculating the center point B0' coordinate (B)0′,0)：
B0′＝B2-4′+(BBS(B1-3′-B2-4′))/2。
(2.6) calculation of A0' and B0Distance D of':
D′＝ABS(A0′)+ABS(B0′)；
(2.7) calculating D' and the standard value D0'deviation value Δ D';
(2.8) the upper computer transmits the deviation value delta D' to the lower computer;
(2.9) the lower computer sends out a command to drive the first adjusting motor to rotate forwards and backwards, and positions of the surface patterns and the cutter marks are adjusted until the deviation value delta D' reaches a set range.

Claims (9)

1. The utility model provides a device with pattern and cut automatic alignment and correction system, including KN95 gauze mask machine, a serial communication port, still be provided with host computer (8), be provided with in the next station department of KN95 gauze mask machine's seal roller (10) and ultrasonic welder (13) station and be used for ingesting the first industry camera (2) and first supporting light source (15) of the relative position pattern of seal line and face line of gauze mask, be provided with second industry camera (3) and second supporting light source (16) that are used for ingesting the face line of gauze mask and the relative position pattern of cutter vestige at the next station department of KN95 gauze mask machine's cutter roller (12) and cutter pillow (14) station, be provided with in the last station department of seal roller (10) and ultrasonic welder (13) station and be used for adjusting the first regulation motor (9) of seal line and face line relative position, be provided with in the last station department of cutter roller (12) and cutter pillow (14) station and be used for adjusting the cutter vestige position of cutter relatively Two adjusting motors (11), host computer (8) are connected respectively first industry camera (2), second industry camera (3) and next machine, first adjusting motor (9) and second adjusting motor (11) are connected respectively to the next machine.
2. The apparatus of claim 1, wherein the first industrial camera (2) and the first light source (15) are respectively located at two sides of the mask cloth; the second industrial camera (3) and the second matched light source (16) are respectively and correspondingly positioned on two sides of the mask cloth.
3. The device with the automatic pattern and cut aligning and correcting system according to claim 1, wherein the output shaft of the first adjusting motor (9) is connected with one end of a first manual gear shaft (23) in a KN95 mask machine, and the first manual gear shaft (23) is correspondingly connected with the upper end and the lower end of the first cloth adjusting roller (18) through two groups of first bevel gear sets (24) and a first lead screw (17) respectively for adjusting the forward movement or the backward movement of the first cloth adjusting roller (18); an output shaft of the second adjusting motor (11) is connected with one end of a second manual gear shaft (25) in the KN95 mask machine, and the second manual gear shaft (25) is correspondingly connected with the upper end and the lower end of the second cloth adjusting roller (21) through two groups of second bevel gear sets (26) and a second lead screw (20) respectively and is used for adjusting the forward movement or the backward movement of the second cloth adjusting roller (21).
4. The device with the automatic aligning and correcting system for pattern and cut as claimed in claim 1, characterized in that the upper computer controls the first industrial camera (2) and the second industrial camera (3) to perform fast and intermittent image acquisition at the same position of the continuously fed cloth according to a set time interval, processes the acquired images, and sends the processed result to the lower computer to drive the first adjusting motor (9) and the second adjusting motor (11) to respectively adjust the forward movement or the backward movement of the corresponding first cloth adjusting roller (18) and the second cloth adjusting roller (21) so as to change the folding amount of the mask cloth, thereby achieving the purpose of adjusting the relative positions of the pattern and the cutting knife.
5. An alignment correction method for the device with pattern and cut auto-alignment and correction system of claim 1, comprising the steps of:
1) adjusting the relative position between the seal pattern (27) and the face pattern (28) in the pattern, comprising:
(1.1) setting a coordinate origin (0,0) in a viewing range of a first industrial camera to form X, Y coordinates, wherein the viewing range is a rectangle with the height of 2H and including a seal line of a former pattern and a face line of a latter pattern in two adjacent patterns, and the center of the rectangle between the seal line and the face line is taken as the origin (0,0) to form X, Y coordinates; (ii) a
(1.2) controlling a first industrial camera to take a picture by the upper computer;
(1.3) the upper computer obtains an image, processes the image by using visual processing software, and respectively obtains the coordinates (A) of two points of the seal line and the surface line image in the image at the upper line and the lower line of the view range from dark to light1,H)、(A3,-H)、(B2,H)、(B4-H), and the coordinates (A) of the two points of the seal and face images turned from light to dark2,H)、(A4,-H)、(B1,H)、(B3-H), H being the absolute values of the upper and lower lines of the viewing range Y on the coordinate;
(1.4) calculating the coordinates (A) of two dark points to light points of the seal fringe image1,H)、(A3-H) and coordinates of two points turned from light to dark (A)2,H)、(A4-H) lines forming a seal pattern parallelogram (A)1A2A4A3) The coordinates of the center point a 0;
(1.5) calculating the coordinates (B) of two dark points of the surface texture image2,H)、(B4-H) and coordinates of two points turned from light to dark (B)1,H)、(B3-H) a quadrilateral (B) formed by connecting lines1B2B4B3) Center point B of0The coordinates of (a);
(1.6) calculation of A0And B0Distance D of (D):
D＝ABS(A0)+ABS(B0)；
(1.7) calculating D and the standard value D0The deviation value delta D;
(1.8) the upper computer transmits the deviation value delta D to the lower computer;
(1.9) the lower computer sends out an instruction to drive the first adjusting motor to rotate forwards and backwards, and positions of the sealing lines and the surface lines are adjusted until the deviation value delta D reaches a set range;
2) adjusting the relative position between the face lines (28) and the cutter marks (30) in the pattern, comprising:
(2.1) setting a coordinate origin (0,0) in a viewing range of a second industrial camera to form X, Y coordinates, wherein the viewing range is a rectangle with the height of 2H and including a sealing line of a front pattern and a cutter trace of a rear pattern in two adjacent patterns, and the center of the rectangle between the sealing line and the cutter trace is taken as the origin (0,0) to form X, Y coordinates;
(2.2) controlling a second industrial camera to take a picture by the upper computer;
(2.3) the upper computer obtains an image, the image is processed by using visual processing software, and coordinates (A) of points, which are formed by turning the cutter trace image from dark to light, in the image at the upper line and the lower line of the view finding range are respectively obtained1′,H′)、(A2', -H'), coordinates (B) of points of the image of the face grain at the upper and lower lines of the finder range, which are turned from dark to light, are obtained2′,H′)、(B4', -H') and coordinates (B) of points turned from light to dark1′,H′)、(B3', -H '), H ' is the absolute value of the upper and lower line of the viewing range Y-direction coordinate;
(2.4) calculating coordinates (A) of two points of the cutter mark image which are dark to bright1′,H′)、(A2', -H') center point A of the line0The coordinates of';
(2.5) calculating two coordinate points (B) of the surface texture image from dark to light2′,H′)、(B4', -H') and two coordinate points (B) turned from light to dark1′,H′)、(B3', -H') is connected to form a quadrangle(B2′B1′B3′B4') center point B0The coordinates of';
(2.6) calculation of A0' and B0Distance D of':
D′＝ABS(A0′)+ABS(B0′)；
(2.7) calculating D' and the standard value D0'deviation value Δ D';
(2.8) the upper computer transmits the deviation value delta D' to the lower computer;
(2.9) the lower computer sends out a command to drive the first adjusting motor to rotate forwards and backwards, and positions of the surface patterns and the cutter marks are adjusted until the deviation value delta D' reaches a set range.
6. The alignment correction method for a device having a pattern and cut auto-alignment and correction system as claimed in claim 5, wherein the (1.4) th step of the step 1) comprises:
(1.4.1) calculating Point (A)1H) and (A)3-H) coordinate value (A) of the intersection of the line and the X-axis1-3,0)
A1-3＝A3-(ABS(A1-A3))/2
(1.4.2) calculating Point (A)2H) and (A)4-H) coordinate value (A) of the intersection of the line and the X-axis2-4,0)
A2-4＝A4-(ABS(A2-A4))/2
(1.4.3) calculating the center Point A0Coordinate (A) of0,0)
A0＝A2-4-(ABS(A1-3-A2-4))/2。
7. The alignment correction method for a device having a pattern and cut auto-alignment and correction system as claimed in claim 5, wherein the (1.5) th step of the step 1) comprises:
(1.5.1) calculating Point (B)1H) and (B)3-H) coordinates (B) of the intersection of the connecting line with the X-axis1-3,0)
If B is present3>＝B1Then B is1-3＝B3-(ABS(B1-B3))/2
Otherwise B1-3＝B3+(ABS(B1-B3))/2
(1.5.2) calculating Point (B)2H) and (B)4-H) seating of the intersection of the line with the X-axis (B)2-4,0)
If B is present4>＝B2Then B is2-4＝B4-(ABS(B2-B4))/2
Otherwise B2-4＝B4+(ABS(B2-B4))/2
(1.5.3) calculating the center point B0Coordinate (B)0,0)：
B0＝B2-4+(BBS(B1-3-B2-4))/2。
8. The alignment correction method for a device having a pattern and cut auto-alignment and correction system as claimed in claim 5, wherein the (2.4) th step of the step 2) comprises:
(2.4.1) if A1′<＝A2' then A0′＝A1′+(ABS(A1′-A2′))/2；
(2.4.2) if A1′>A2' then A0′＝A1′+(ABS(A1′-A2′))/2。
9. The alignment correction method for a device having a pattern and cut auto-alignment and correction system as claimed in claim 5, wherein the (2.5) th step of the step 2) comprises:
(2.5.1) calculating Point (B)1', H') and (B)3'H' -line and X-axis1-3′,0)
If B3'>＝B1', then B1-3′＝B3′-(ABS(B1′-B3′))/2
Otherwise B1-3′＝B3′+(ABS(B1′-B3′))/2
(2.5.2) calculating Point (B)2', H') and (B)4'H' -line and X-axis2-4′,0)
If B is present4′>＝B2', then B2-4′＝B4′-(ABS(B2′-B4′))/2
Otherwise B2-4′＝B4′+(ABS(B2′-B4′))/2
(2.5.3) calculating the center point B0' coordinate (B)0′,0)：
B0′＝B2-4′+(BBS(B1-3′-B2-4′))/2。
CN202010759663.7A 2020-07-31 2020-07-31 Device with pattern and cutting automatic alignment correction system and alignment correction method Pending CN111890696A (en)

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