KR19990067966A - Process and apparatus for detecting loop stitch of tubular knitted fabric, and apparatus for linking tubular knitted fabric - Google Patents

Abstract

Provided are a method for detecting a knitting nose of a circular knitting cloth, a knitting nose detecting device for a circular knitting cloth, and a linking device for a circular knitting cloth, which can automatically detect a cutting nose formed in a circular knitting cloth.

The nose detection method according to the present invention extends the circular knitting cloth by inserting an insertion body into the circular knitting cloth having a crocheting nose. And a multi-tone image including the image of the crocheted nose of the electric circular knitting cloth extended by the insertion cylinder is imaged. In addition, the position of the nose to be cut is detected by image processing the multi-tone image.

Moreover, the knitting nose detection apparatus of the circular knitting cloth which concerns on this invention is inserted into the inside of the circular knitting fabric which has a knitting nose, and extends the circular knitting cloth, and the cutting of the electrical circular knitting cloth extended by the insertion cylinder. Image pickup means for picking up a multi-gradation image including an image of a nose, and cutting nose detection means for detecting the position of a cutting nose by image processing the multi-gradation image.

Moreover, the linking device for circular knitting fabric which concerns on this invention is an insertion body which inserts inside the circular knitting cloth which has a knitting nose, and extends a circular knitting cloth, and the image of the knitting nose of the electrical circular knitting cloth extended by the cutting body. Image pickup means for picking up a multi-gradation image comprising: a cutting nose detection means for detecting the position of a cutting nose by image processing the multi-gradation image; and a cutting nose detected by the cutting nose detection means. A means for matching the point needle to a position, a means for pinching an electric point needle to each crocheted nose, and a sewing machine for linking the crocheted nose through the point needle.

Description

PROTESS AND APPARATUS FOR DETECTING LOOP STITCH OF TUBULAR KNITTED FABRIC, AND APPARATUS FOR LINKING TUBULAR KNITTED FABRIC}

The present invention relates to a method for detecting a knitting nose of a circular knitting cloth, a knitting nose detecting device for a circular knitting cloth, and a linking device for a circular knitting cloth, and particularly, for example, the position of a cutting nose Hanko Hanko formed on a circular knitting cloth can be accurately detected. The present invention relates to a knitting nose detection method for circular knitting cloth, and a knitting nose detecting device for circular knitting cloth and a linking device for circular knitting cloth.

Conventionally, the floating cloth which is the material of a knitted product is a floating nose which should be linked so that a product may link correctly to a predetermined size and shape when linking a floating nose, and it knits slightly larger than another floating nose. The stuffy nose which formed the nose part of the floating nose large by this is formed. Then, when linking, the worker pulls out the floating fabric by hand, finds the nose to be broken by making a gap of the floating cloth, and sets the point needle of the linking device by hand to the nose to be broken by hand. After that, the sewing machine was subjected to linking. This operation is similarly performed in the case of circular knitting, and first, the worker puts both hands in the opening of the circular knitting fabric, pulls out the circular knitting fabric, and makes a gap by floating the inside of the worker. After finding and setting the point needle of the linking device to the knitting nose, the work is similarly performed with respect to the floating fabric in front of him. Linking was done.

Nevertheless, it is relatively easy to find the whole nose as a string, but the only way to find exactly one nose is because the nose is slightly larger than the normal nose. And functionality is required. Therefore, a person who is not skilled in the work required a lot of time to perform the work of finding the nose which blows with eyes, and the work efficiency was very bad. In particular, this problem was remarkable in regard to the circular knitted fabric, since it became difficult to pull out the knitted fabric in front of the self after setting the inner knitted fabric in the linking device. Therefore, when linking was performed, defects such as linking some missing noses and linking occurred, resulting in a worse ratio of the product to the raw material.

Therefore, an object of the present invention is to provide a knitting nose detection method for circular knitting cloth, a knitting nose detecting device for circular knitting cloth, and a linking device for circular knitting cloth, which can automatically detect the knitting nose Hanko Hanko formed on the circular knitting cloth. will be.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing one embodiment of a ring-kneading cloth linking device according to the present invention.

2 is a schematic diagram showing the configuration of a snag nose detection unit.

Fig. 3 is a schematic diagram showing the state where the socks where the toenail vicinity parts are not closed to each other are inserted through the nose detection unit.

4 is a schematic view showing the configuration of the point needle control unit.

5 is a plan view showing the structure of a point needle.

6 is a perspective view showing the needle portion.

Fig. 7 is a flowchart showing an example of the operating status of the snag detection unit.

8 is a diagram showing a part of a multi-tone image captured by a CCD camera.

FIG. 9 is a diagram showing a state in which the multi-tone image shown in FIG. 8 is binarized. FIG.

10 is a flowchart showing an example of an operating status of binarization processing.

FIG. 11 is a diagram showing a state where the binary image shown in FIG. 9 is labeled.

FIG. 12 is a diagram showing a state in which the cut nose area is extracted from the label image shown in FIG.

Fig. 13 is a flowchart showing an example of the operating status of the cutting nose extraction process.

Fig. 14 is a flowchart showing a step of passing a point needle through a cutting nose.

Fig. 15 is a side view showing the case where the position of the crocheting nose and the needle position on one side of the insertion tube do not correspond.

Fig. 16 is a side elevation view showing the case where the cutting nose on one side of the insert is adjusted to the position of the needle.

Fig. 17 is a side elevation view showing a state where a needle has passed through a nose that is cut off on one side of the insertion tube.

Fig. 18 is a side view showing the state in which the lower insertion body slides.

Fig. 19 is a side elevation view showing a state in which a needle is positioned in a slit between the upper and lower insert cylinders.

Fig. 20 is a side elevation view showing a state in which the nose cut off at the position of the needle is placed on the other side of the insertion tube.

Fig. 21 is a side elevation view showing a state where a needle has passed through a nose that is cut off on both sides of the insert body.

The knitting nose detection method of the circular knitting fabric which concerns on this invention is a process which extends a circular knitting cloth by inserting an insertion body inside the circular knitting cloth which has a knitting nose, and the knitting nose of the circular knitting cloth extended by the cutting body. A knitting method for cutting circular knitting cloth, which comprises a step of picking up a multi-gradation image including an image and a step of detecting a position of a cutting nose by image processing the multi-gradation image.

In this invention, the state of the floating cloth in front of oneself and the state of the other floating cloth are imaged independently, in the state which expanded the floating nose containing a knitting nose. Thereby, since the situation of the floating fabric in front and the situation of the other side are not confused and recognized, it is possible to detect the position of the nose to cut off correctly.

Moreover, in this invention, you may include the process of extending | stretching a circular knitting cloth to the insertion direction of an insertion body.

In this case, imaging can be performed in the state which expanded the floating nose containing a hanging nose further. As a result, the position of the nose to be cut more reliably can be detected.

Furthermore, in this invention, the process of picking up a multi-gradation image may be performed on a plane.

In this case, the situation near the crocheted nose of the circular knitting cloth is imaged two-dimensionally. As a result, since a plurality of crocheting noses can be imaged at the same time, it is not necessary to separately image each crocheting nose of the circular knitting cloth, the detection time is shortened, and the detection efficiency is improved.

In the present invention, the step of picking up the multi-tone image may be performed by using light transmitted from the inside of the circular knitting cloth to the outside. A plurality of light emitting bodies such as LEDs may be arranged on the end face of the insert in the slit, and may be illuminated internally with any floating fabric arranged on the slit.

In this case, light passing through the circular knitting cloth is received by the imaging means. As a result, a multi-tone image capable of clearly distinguishing the boundary portion between the fiber portion and the floating nose portion of the circular knitted fabric can be picked up, whereby the position of the crocheted nose can be detected more accurately.

Moreover, in this invention, the process of using the insertion body which has a slit as an insertion body, and image | photographing a multi-gradation image differs from the process of irradiating light to a slit from one side of a circular knitting cloth in a slit. It may also include a step performed by using light passing through the side.

In this case, also about the floating fabric arrange | positioned on a slit, the light which permeate | transmitted the circular knitted fabric is received by the imaging means. As a result, a multi-tone image capable of clearly distinguishing the boundary portion between the fiber portion and the floating nose portion of the circular knitted fabric arranged on the slits can be detected, so that the position of the slitting nose on the slits can be detected more accurately. have.

Moreover, in this invention, the process of detecting the position of a cutting nose is a process of converting a multi-tone image into a binary image, converting a binary image into a label image, and labeling contained in a label image. Counting the number of constituent pixels in each region, and generating an extraction label image in which only the regions having a constituent pixel number larger than the value set on the basis of the minimum constituent pixels of the region formed by the cutting nose are formed; And calculating the position of each cut nose by calculating the position of each region included in the extraction label image.

In this case, the cutting nose is extracted based on the area of the area, and the position of the cutting nose is determined. This makes it possible to detect the positions of the cutting noses of various sizes.

In this invention, the process of converting into a binary image divides a multi-gradation image into a plurality of small regions, and determines the binarization threshold value for each small region based on the image characteristics of the small region. You may also include a process.

In this case, the image of each part is binarized according to the lighting situation of each part of the circular knitting cloth. As a result, the boundary between the fiber portion and the floating nose portion of the circular knitted fabric is not affected by the lighting situation of each portion of the circular knitted fabric, so that the nose to be cut can be detected more accurately.

The knitting nose detecting apparatus for circular knitting cloth according to the present invention includes an elongated body which is inserted into a circular knitting cloth having a knitting nose and extends the circular knitting cloth, and an electric knitting knitting machine of the electric circular knitting cloth extended by the insertion tube. Image pickup means for picking up a multi-gradation image including an image, and a cutting nose detection means for detecting the position of a cutting nose by image processing the multi-tone image. to be.

In this invention, the state of the floating cloth in front of oneself and the state of the other floating cloth are imaged independently, in the state which expanded the floating nose containing a knitting nose. As a result, since the situation of the cloth in front of him and the situation of the other side are not confused and recognized, the position of the nose to be trimmed can be detected accurately.

In the present invention, the upper gripping means for pinching the upper part of the crocheted nose and moving in the insertion direction and the lower pinching means for pinching the lower part of the crocheted nose of the circular knitting cloth and moving in the insertion direction may be provided. .

In this case, imaging can be performed in the state which expanded the floating nose containing a hanging nose further. Thereby, the position of the nose to cut more reliably can be detected.

In addition, in this invention, the insertion body may be arrange | positioned so that the surface in which at least a cutting nose is arrange | positioned may be formed in planar shape, and the imaging direction of an imaging means may be perpendicular to the width direction of the planar surface of an insertion body.

In this case, the situation near the crocheted nose of the circular knitting cloth is imaged two-dimensionally. As a result, a plurality of crocheting noses can be imaged at the same time, so that each crocheting of the circular knitting cloth is particularly in a placed state where it is not necessary to adjust the position with respect to one of the crocheting noses. In this regard, it is not necessary to take an image individually, so that the detection time of the entire nose is shortened and the detection efficiency is improved.

In this invention, the insertion body may have light emitting means.

In this case, the light passing through the circular knitting cloth is detected by the imaging means. As a result, a multi-tone image capable of clearly distinguishing the boundary portion between the fiber portion of the circular knit fabric and the crocheted nose portion can be captured, whereby the position of the crocheted nose can be detected more accurately.

In addition, in this invention, an insertion body may have a slit and may have the lighting means which irradiates a light to a slit.

In this case, also about the floating fabric arrange | positioned on a slit, the light which permeate | transmitted the circular knitted fabric is received by the imaging means. As a result, a multi-tone image capable of clearly distinguishing the boundary portion between the fiber portion and the floating nose portion of the circular knitted fabric arranged on the slits can be detected, so that the position of the slitting nose on the slits can be detected more accurately. have. A plurality of light emitting bodies such as LEDs may be arranged on the end faces of the inserts in the slit, and a device may be provided to illuminate the floating fabric arranged on the slit internally.

In the present invention, the cutting nose detection means includes a means for converting a multi-tone image to a binary image, a means for converting a binary image to a label image, and a configuration of each labeled region included in the label image. Area extraction means for counting the number of pixels, and generating an extraction label image which extracts only an area having a constituent pixel number larger than the value set on the basis of the minimum constituent pixel number of the area formed by the cutting nose; By calculating the position of each area included in the label image, it may have a means for finding the position of each cut nose.

In this case, the cutting nose is extracted based on the area of the area, and the position of the cutting nose is determined. Thereby, the floating nose which becomes a cutting nose and other floating noses are distinguished, and the position of a knitting nose can be correctly calculated | required.

In the present invention, the means for converting into a binary image may include means for dividing the multi-tone image into a plurality of small regions, and determining the binarization threshold value for each small region based on image characteristics in the small region.

In this case, the image of each part is binarized according to the lighting situation of each part of the circular knitting cloth. This makes it possible to detect the position of the cutting nose more accurately since the boundary between the fiber portion and the cutting nose portion of the circular knitting cloth is not affected by the lighting situation of each portion of the circular knitting cloth.

A linking device for circular knitting cloth according to the present invention includes an insulator which extends the circular knitting cloth by inserting into a circular knitting cloth having a knitting nose, and an image of a knitting nose of the circular knitting cloth extended by the cutting cylinder. The image pickup means for picking up the multi-gradation image, the cutting nose detection means for detecting the position of the cutting nose by image processing the multi-gradation image, and the position of the cutting nose detected by the cutting nose detection means A linking device for circular knitting cloth, comprising a means for matching a needle, a means for passing an electric point needle through each crocheted nose, and a sewing machine for linking the crocheted nose through the pointed needle.

In this invention, the state of the floating cloth in front of oneself and the state of the other floating cloth are imaged independently, in the state which expanded the floating nose containing a knitting nose. As a result, the situation of the floating cloth in front of the self and the situation of the other side can not be confused and recognized, so that the point needle can be pinched to the nose for precisely cutting the needle, and the linking is correctly performed in the desired size and shape.

Moreover, in this invention, you may have the upper clamping means which clamps the upper part of the knitting nose of a circular knitting cloth, and moves to a insertion direction, and the lower clamping means which clamps the lower part of the knitting nose of a circular knitting cloth, and moves to an insertion direction. .

In this case, imaging is carried out with the floating nose including a crocheted nose further enlarged. Thereby, the position of the nose to cut more reliably can be detected, and it is correctly linked to a desired size and shape more reliably.

In addition, in this invention, the insertion body may be arrange | positioned so that the surface in which at least a cutting nose is arrange | positioned may be formed in planar shape, and the imaging direction of an imaging means may be perpendicular to the width direction of the planar surface of an insertion body.

In this case, the situation near the crocheted nose of the circular knitting cloth is imaged two-dimensionally. As a result, since a plurality of crocheting noses can be simultaneously imaged, it is not necessary to separately image each crocheting nose of the circular knitting cloth, so that the time required for linking is shortened and the production efficiency is improved.

In this invention, the insertion body may have light emitting means.

In this case, the light passing through the circular knitting cloth is detected by the imaging means. As a result, a multi-tone image capable of clearly distinguishing the boundary portion between the fiber portion of the circular knitting cloth and the crocheted nose portion can be imaged, so that the position of the crocheted nose can be detected more accurately, and the desired position is more surely desired. It is correctly linked in size and shape.

In addition, in this invention, an insertion body may have a slit and may have the lighting means which irradiates a light to a slit.

In this case, also about the floating fabric arrange | positioned on a slit, the light which permeate | transmitted the circular knitted fabric is received by the imaging means. As a result, a multi-tone image capable of clearly distinguishing the boundary portion between the fiber portion and the floating nose portion of the circular knitted fabric arranged on the slits can be detected, so that the position of the slitting nose on the slits can be detected more accurately. In addition, by the same point needle, linking can be carried out through the knitting nose of the front floating cloth and the other knitting nose.

Further, in the present invention, the cutting nose detection means includes a means for converting a multi-tone image to a binary image, a means for converting a binary image to a label image, and a configuration of each labeled region included in the label image. Area extraction means for generating an extraction label image by counting the number of pixels and extracting only an area having a larger number of constituent pixels than a value set on the basis of the minimum constituent pixel number of the area formed by the cutting nose in the label image; By calculating the position of each area included in the label image, it may have a means for finding the position of each cut nose.

At this time, the cutting nose is extracted based on the area of the area, and the position of the cutting nose is determined. Thereby, the floating nose which becomes a cutting nose and other floating noses are distinguished, and the position of a knitting nose can be calculated correctly.

In the present invention, the means for converting into a binary image may include means for dividing the multi gradation image into a plurality of small regions, and determining the binarization threshold value for each small region based on image characteristics in the small region.

In this case, the image of each part is binarized according to the lighting situation of each part of the circular knitting cloth. As a result, it is not influenced by the lighting situation of each part of the circular knitting cloth and detects the boundary between the fiber part of the circular knitting cloth and the cutting nose part, so that the nose to be cut more accurately can be detected, and it is surely desired. It is correctly linked in size and shape.

In the present invention, the means for associating the point needle with the position of the knitting nose may include means for displacing the position of the knitting nose in one direction and means for displacing the point needle in a direction orthogonal to the electrical one direction. The means for associating the point needle with the position of the crocheting nose may include means for displacing the electric point needle two-dimensionally. Furthermore, the means for associating the point needle with the position of the crocheting nose may include means for displacing the position of the electrical crocheting nose two-dimensionally.

In this case, by displacing the position of the pointed nose and the point needle, the position of the pointed nose can be precisely matched.

The above object, other objects, features, and advantages of the present invention will become more apparent from the detailed description of the embodiments of the invention described below with reference to the drawings.

(Preferred Embodiment of the Invention)

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows one Embodiment of the ring-linking apparatus for circular knitted fabrics which concerns on this invention. FIG. 2 is a schematic diagram showing the configuration of a snag nose detection unit, and FIG. 3 is a schematic diagram showing a state in which socks near the toe tip are inserted into the snag nose detection unit.

The linking device 1 for circular knitting cloth includes the lower board 2. And the lower elevator 3 is provided in the substantially center of the lower board 2. As shown in FIG. In addition, the lower elevator 3 is configured to move the upper plate in the vertical direction by combining the plate with the cam and the drive motor, or with the plate with the hydraulic jack. And the cylinder 4 formed in the cylindrical shape is provided in the upper surface of the lower elevator 3. The cylinder 4 is used in order to insert a plurality of circular knitting cloths and to stock them, and is formed in the appropriate length. And the snort nose detection part 10 which consists of a structure shown in FIG. 2 is arrange | positioned at the upper part of the cylinder 4. As shown in FIG.

The cutting nose detection unit 10 includes an elongated flat lower plate 12a and an upper plate 12b. Referring to the configuration of the lower insertion plate 12a and the upper insertion plate 12b, the lower insertion plate 12a and the upper insertion plate 12b are not easily deformed, for example, a middle plate 14 made of stainless steel sheet. Has Then, EL (Electro Luminescence) panels 16a and 16b are laminated in such a manner that the light emitting portions are turned outward so as to cover the front and rear surfaces of the middle plate 14. Furthermore, on the outward surfaces of the EL panels 16a and 16b, in order to protect the EL panels 16a and 16b, the lower inserts are formed by laminating transparent plates 18a and 18b made of, for example, transparent acrylic plates so as to cover the entire surface. The plate 12a and the upper insertion plate 12b are comprised.

The EL panels 16a and 16b are electrically connected to an operating power source (not shown) so that an appropriate voltage is applied to emit light arbitrarily. In this embodiment, although an EL panel is used as the light emitting means, the present invention is not limited to this, but may have a light emitting function. However, considering the processing in the image processing apparatus 26 to be described later, an example of this embodiment is written so that the luminance on the surfaces of the lower insertion plate 12a and the upper insertion plate 12b does not vary depending on the place. It is preferable to use what performs surface emission, such as an EL panel and a plasma display panel.

As shown in Fig. 3, the lower insertion plate 12a and the upper insertion plate 12b are socks W (hereinafter referred to simply as unfinished socks W) in which the vicinity of the toe tip, which is a circular knitting cloth, is not closed to each other. Is placed by inserting. When the lower insertion plate 12a and the upper insertion plate 12b are inserted into the unfinished socks W, at least the floating cloth of the part where the crocheted nose K of the unfinished socks W is formed is expanded and expanded. It is formed in size. That is, the width | variety of the lower insertion board 12a and the upper insertion board 12b of the part which arrange | positions the cutting nose K at least is between the floating cloth of the front side of the unfinished socks W, and the other floating cloth. It forms larger than the width | variety of the unfinished socks W in the state which contact | adhered so that a gap may not arise in the inside. In addition, in order to hold the knitting nose K at a constant height, hooks 19a and 19b hanging on the knitting nose K at both ends are provided on both sides of the lower insertion plate 12a. Further, the lower insertion plate 12a and the upper insertion plate 12b can smoothly penetrate the unfinished socks W and can be moved on the lower insertion plate 12a and the upper insertion plate 12b. It is preferable not to have a part in which the external shape of the abruptly changes.

Then, the rollers 20a, 20b, which are the lower clamping means, are disposed symmetrically with respect to the lower insertion plate 12a on the front and rear surfaces of the lower portion of the lower insertion plate 12a. As shown in Fig. 3, the rollers 20a and 20b are placed under the portion where the cutting nose K is formed, and are rotated while pressing the unfinished socks W against the insertion plate 12a to move in the insertion direction. It is intended to be driven by a drive means such as a motor having an encoder to rotate only an arbitrary amount. In addition, the rollers 20a and 20b have an edge portion 5 near the lower insertion plate 12a (Fig. 1) so that the work for inserting the unfinished socks W into the lower insertion plate 12a can be easily performed. ), The arm 6 is movably attached to the rim 5 (FIG. 1), and both ends of the roller shaft are supported by the arm 6 to be lifted off the surface of the insertion plate 12a. Doing.

In addition, when the pinching arm portions 22a and 22b configured to be opened and closed are closed above the upper inserting plate 12b, the upper clamping portion ( 22). As shown in Fig. 3, the upper gripping portion 22 is positioned above the portion where the cutting nose K is formed so as to sandwich the unfinished socks W and move in the insertion direction. It is supported by an upper elevator (7) configured to be. In addition, the insertion plate 12b is fixed to the lower surface of the upper elevator 7 so as not to interlock with the movement of the upper gripping portion 22. Moreover, the clamping arm parts 22a and 22b are comprised so that rotation force is given to the rotating shaft by the motor 9 via the belt 8, and can open and close arbitrarily. Moreover, the upper clamping part 22, the upper insertion body 12b, etc. are comprised so that the arm 13 formed in the mount 11 located next to the lower elevator 3 can move to a horizontal direction. It is.

In the vicinity of the front and rear surfaces of the lower insertion plate 12a and the upper insertion plate 12b, the CCD cameras 24a and 24b move the imaging direction to the surfaces of the lower insertion plate 12a and the upper insertion plate 12b. Place it perpendicular to the The CCD cameras 24a and 24b have a multi-gradation image including images of all the crocheted noses K of the unfinished socks W disposed on the lower insertion plate 12a and the upper insertion plate 12b. It is imaging. The multi gradation image captured by the CCD cameras 24a and 24b is changed into red and is input to the image processing apparatus 26 in response to a position of detecting a snuffing nose. In this embodiment, the CCD cameras 24a and 24b are arranged such that the imaging direction is perpendicular to the surfaces of the lower insertion plate 12a and the upper insertion plate 12b, but the unfinished socks W are cut. Arrangement of an enemy may be changed as long as it is in the range which can image clearly the situation of the floating nose containing nose K. As shown in FIG.

The image processing apparatus 26 provided in the control part 90 (FIG. 1) is electrically connected to CCD camera 24a, 24b. The image processing apparatus 26 detects the snuffing nose K provided in the unfinished socks W based on the multi-tone image picked up by the CCD cameras 24a and 24b. The image processing apparatus 26 includes a smoothing processing unit 28 for smoothing a multi-tone image, a binarization processing unit 30 for binarizing a multi-tone image, and a threshold determination unit for obtaining a binarization threshold value used for binarization. (32), a labeling processing unit 34 for converting the binarized image into a label image, and extracting a nasal region to be trimmed based on the number of pixels of each label portion region included in the label image to generate an extracted label image. The trimming nose area extraction part 36 and the trimming nose position calculation part 38 which calculate the position of each trimming nose area | region contained in an extraction label image are included. In addition, the function of each part is explained in full detail at the time of description regarding the operation | movement state of the ring knitted fabric linking apparatus 1 with respect to the unfinished socks W mentioned later.

4 to 6, the point needle control section will be described. 4 is a schematic view showing the structure of the point needle control unit, FIG. 5 is a plan view showing the structure of the point needle, and FIG. 6 is a perspective view showing the needle portion.

The point needle control unit 50 is disposed above the front edge of the frame 5. The point needle control unit 50 includes a conveyor 52 as shown in FIG. The conveyor 52 is fixed to horizontally move the belt 54 in the front-rear direction. Moreover, on the belt 54, the point needle lateral position control part 60 which consists of the feed screw 56 and the feed motor 58 is attached via the plate 61. As shown in FIG. In this case, the feed screw 56 is horizontally attached to the plate 61. The transfer screw 56 is provided so that another plate 63 can be displaced laterally. In this case, the plate 63 is disposed in the vicinity of the lower insertion plate 12a. And the needle-pressure control part 66 which consists of the feed screw 62 and the feed motor 64 is fixed in front of the magnet on the plate 63. As shown in FIG. Further, at the inner deep end of the plate 63, a point needle 68 having a width substantially the same as that of the lower insertion plate 12a is attached to face the upper end of the lower insertion plate 12a.

As shown in Fig. 5, the point needle 68 is provided with a plurality of grooves 70 at regular intervals, the edge portion 72 having a longitudinal cross section in a jagged shape, and a groove ( It consists of a plurality of needles 74, which are accommodated in front and rear, and a lid portion 76 covering a part of the magnetic front part of the upper surface of the first portion 72. As shown in Fig. 6, the needle 74 is formed so that its end is formed in an L shape, and is hung on the front end face of the front part 72 when it is extruded inward. Furthermore, a step is provided at the inner end of the needle 74 in a step shape, and is formed so as to rest on the lid portion 76 when it is returned to the front of the self. Furthermore, a guide groove 78 for guiding the needle of the sewing machine, which will be described later, is formed on the inner end upper surface of the needle 74. In addition, guide grooves similar to the guide grooves 78 are formed in the tip portions of the hooks 19a and 19b.

A female screw member 79 is screwed into the feed screw 62 of the point needle lateral position control section 66 as shown in FIG. A block pressure drawing unit 80 having a solenoid for generating a force for extruding the needle 74 is fixed to the female screw member 79. Furthermore, a block 84 having a needle push pin 82 is attached to the block pressing portion 80 on the surface opposite to the point needle 68.

The point needle control unit 50 can change the position in the front-back direction of the point needle 68 by driving the conveyor 52 by the structure mentioned above. Moreover, the horizontal position of the point needle 68 can be changed by driving the point needle horizontal position control part 60. Furthermore, by intermittently driving the needle pressure control part 66 and the block pressure drawing part 80, the needle 74 can be extruded at a time. In addition, the conveyor 52, the point needle horizontal position control unit 60, the needle pressure control unit 66, and the block pressure drawing unit 80 are electrically connected to the control unit 90 (FIG. 1), and the point needle 68 The needle 74 can be made to correspond to the position of the nose to be detected by the nose cutting unit 10, and can be extruded toward the nose.

Furthermore, this ring knitting device 1 for circular knitting cloth uses a guide groove 78 of the needle 74 of the point needle 68 which has passed through the crocheting nose and sewing machine 100 for linking the crocheting nose. It includes. The sewing machine 100 is configured to be movable in the lateral direction by an arm 17 or the like formed on the other mount 15 positioned next to the lower elevator 3.

Next, with reference to FIG. 7 mainly, the operation of the linking device for circular knit cloth for the unfinished socks W will be described. 7 is a flowchart showing an example of an operating situation of the linking device for circular knitting cloth.

First, in step S1, the unfinished socks W are set in the knitting nose detection section 10 of the circular knitting cloth. Referring to the set operation, first, the unfinished socks W are inserted into the lower insertion plate 12a and the upper insertion plate 12b. At this time, the hooks 19a and 19b are inserted into the cutting noses K at both ends of the unfinished socks W. As a result, the unfinished socks W are extended in the width direction. And the pinching arm part 22a, 22b of the upper clamping part 22 is pinched above the nose K which cuts the unfinished socks W, and the roller 20a is lowered below the nose K which cuts. , 20b) is sandwiched by pressing the lower insertion plate 12a, and arranged as shown in FIG.

Next, in step S2, the unfinished socks W are extended in the insertion direction by the upper gripping portion 22 and the rollers 20a and 20b. As shown in Fig. 3, the extension moves the support position of the upper clamping portion 22 upward, or rotates the rollers 20a and 20b to pull the unfinished socks W downward, or This is done by doing both. In addition, at the time of extension, care must be taken so that the cutting nose K is disposed within the imageable range of the CCD cameras 24a and 24b.

Referring to the results of the steps Sl and S2 performed so far, the floating nose of the unfinished socks W is formed in both the width direction of the lower insertion plate 12a and the upper insertion plate 12b and the insertion direction in both directions. It is enlarged and it is in the state of the image processing apparatus 26 in which the snuffing nose K is easy to detect. In this embodiment, in step S2, the unfinished socks W are stretched in the insertion direction by the rollers 20a and 20b and the upper clamping portion 22, but at the time of step Sl, the unfinished socks are When the unfinished socks W are properly extended in the insertion direction due to the friction between the (W) and the insertion plate 12, step S2 may be omitted.

Next, in Step S3, as shown in Fig. 8, the state of the floating nose including the crocheted nose K formed in the unfinished socks W is imaged by the CCD cameras 24a and 24b. At the time of imaging, the EL panel 16a, 16b of the lower insertion board 12a and the upper insertion board 12b is lighted, and the boundary part of the fiber part of the unfinished socks W and the floating nose part can be distinguished clearly. In order to do this, the transmitted light is used and imaged by CCD cameras 24a and 24b. 8 is a diagram showing a part of a multi-gradation image captured by a CCD camera.

In step S4, the captured multi-gradation image is input to the smoothing processing unit 28 included in the image processing apparatus 26, and converted into a multi-gradation image subjected to the smoothing process. The smoothing processing unit 28 removes noise included in the multi-gradation image picked up by the CCD cameras 24a and 24b, and converts the image into an image which eliminates minute fluctuations in the density gradation for each pixel. By carrying out the smoothing process, the multi-tone image is an image that can more clearly distinguish the boundary portion between the fiber portion of the unfinished socks W and the floating nose portion. As the smoothing filter, a simple averaging filter, a filter using a moving average method, or the like, which obtains an average value of gray levels of a pixel of interest and surrounding pixels, and replaces the average value with a value of the pixel of interest.

In step S5, as shown in Fig. 9, the smoothed multi-gradation image is input to the binarization processing section 30, and the binarization processing is performed to convert it into a binary image. 9 is a diagram showing a state where the multi-tone image shown in FIG. 8 is binarized.

The binarization process will be described in detail with reference to FIG. 10. First, in step S51, the threshold value determination unit 32 divides the multi-tone image into small regions each having an equal area. When dividing into small areas, the small areas may be divided so as to overlap at a certain ratio. 10 is a flowchart showing an example of the operating status of the binarization processing.

Next, in step S52, the binarization threshold value for each small region is determined based on the density histogram for each small region. Furthermore, by performing interpolation of the threshold values between the small regions, a more appropriate binarization threshold value can be obtained. In this embodiment, the P-tile method is used as the threshold determination method. In addition, threshold determination methods such as a mode method and a discriminant analysis method may be used.

In addition, when the fluctuation of the lighting condition of the unfinished socks W is small and the binarization threshold value does not need to be changed frequently, the binarization threshold value obtained by performing this step is first stored, and this is stored in the input image after the next time. You may apply to a binarization process.

In step S53, the conversion to the binary image of the multi-tone image which is the final step of the binarization processing is performed. In the binarization processing, conversion is performed using the binarization threshold value for each small area determined by the threshold value determination unit 32. In this embodiment, as shown in Fig. 9, the image signal "1" corresponds to a location corresponding to the fiber portion, that is, a pixel having a high density gray level, and to a location corresponding to a floating nose part, that is, to a pixel having a low density gray level. A binary image is formed by assigning the image signal "0".

And in step S6, the labeling process part 34 converts a binary image into a label image. In this embodiment, as a result of converting a binary image into a label image, as shown in Fig. 11, the pixel at the portion corresponding to the fiber portion is maintained without being given a label as "0". The floating nose portion including the cutting nose K is provided with a label such as a letter or symbol other than “0” to form an area. As a result, as can be seen by comparing Figs. 9 and 11, the labels “c”, “d”, “e”, “f”, and “g” are assigned to the areas indicating the cutting nose K, respectively. have. FIG. 11 is a diagram showing a state in which the binary image shown in FIG. 9 is labeled.

In step S7, as shown in FIG. 12, the area | region which shows the labeling cut nose K (henceforth only a cut nose area | region) is extracted by the cutting nose area | region extraction part 36. As shown in FIG. FIG. 12 is a diagram showing a state in which the cut nose area is extracted from the label image shown in FIG.

A detailed description will be given of the nose extraction processing of Fig. 13. First, in step S71, the number of constituent pixels of the label portion region included in the label image, which indicates the area of the labeled region (hereinafter, simply referred to as the area). Is counted for each area. Fig. 13 is a flowchart showing an example of the operating status of the snore extraction process.

Next, in step S72, the area between the area threshold set in advance and the area of each label unit is compared, and when the area of the label unit area that is planted at the area threshold is small, as shown in step S731, the planted area The label value is deleted, and " 0 " In addition, when the area of the label portion area implanted at the area threshold is large, as shown in step S732, the label value of the planted area remains as a phenomenon type. In addition, the area threshold value is set slightly smaller than this, based on the minimum value of the constituent pixels of the labeling area of the cutting nose when the image of the cutting nose K is binarized and labeled. In embodiment, the area threshold was 12.

In step S74, it is determined whether or not an unprocessed label portion region exists, and the process from step S72 is processed for all the label portion regions.

In step S8, the cutting nose position calculation part 38 detects the cutting nose position by calculating the position of the cutting nose area. In this embodiment, the center position of the cutting nose area is regarded as the position of the cutting nose and calculated.

And as shown in FIG. 14, in step S9, whether the needle 74 can penetrate into the knitting nose K from the detected position of the knitting nose K and the position of the needle 74. FIG. Is judged.

If, as shown in Fig. 15, the position of the needle 74 and the detected crocheting nose K is shifted in the up and down direction, the position where the needle 74 cannot communicate with the crocheting nose K In the step S10, the cloth is displaced along the lower insertion plate 12a and the upper insertion plate 12b by the rollers 20a and 20b, and the point needle 68 is in a direction orthogonal to the direction of displacement of the cloth. By displacing), the needle 74 is adjusted to come to a position corresponding to the cutting nose K. In addition, when the position of the needle 74 and the detected crocheted nose K are shifted in the horizontal direction, the point needle horizontal position control part 60 displaces the point needle 68 in the horizontal direction. As a result, the needle 74 is adjusted to come to a position corresponding to the cut nose K.

In step S10, when adjustment is performed, a process returns to the regression point 1 and the position of the nose to cut off is detected again. And when the needle 74 cannot be matched with the position corresponding to the nose which cuts by one adjustment, the above-mentioned adjustment of a position is performed in multiple times.

By such adjustment, as shown in FIG. 16, when one crocheting nose and the needle 74 come to the corresponding position, in step S11, the needle 74 is extruded by the block pressure drawing part 80, Lose. As a result, as shown in Fig. 17, the needle 74 is pierced by the knitting nose K of the cloth and stops in contact with one surface of the lower insertion plate 12a.

And in step S12, it is determined whether the extrusion of the needle 74 was performed with respect to all the twisting noses K in one side of the lower insertion plate 12a. If all the knitting noses on one side are not performed, the process returns to the regression point 1. Moreover, when it is performed about all the crocheting noses in one side, a process progresses to step S13.

In step S13, it is determined whether the process in step S11 was performed with respect to all the crocheting noses K on both surface sides. When the needle 74 is not extruded to all the knitting noses K by both sides, a process advances to step S14.

In step S14, as shown in FIG. 18, the lower insertion plate 12a slides downward, and the slits N are formed between the upper insertion plate 12b. At this time, the point needle 68 is slightly extruded forward by the conveyor 52 so that the point needle 68 does not fall out of the crocheting nose of the cloth, and the needle 74 is slits ( N) is located inside. Further, a light (not shown) provided near the slit N is turned on, and after replacing the camera to image with the CCD camera 24b, the process returns to the regression point 1.

Further, even if the slits N are formed between the lower insertion plate 12a and the upper insertion plate 12b, as shown in Figs. 18 and 19, the slitting nose K on the other side of the insertion plate is shown. Position and the needle 74 do not correspond in many cases. Therefore, also at the other surface side of the insertion plate, the cutting nose K is detected by the cutting nose detection unit 10. And the position of the cutting nose K of the cloth in the other surface side of the insertion plate 12a, 12b, and the needle 74 are similar to the method performed by the one surface side of the insertion plate 12a, 12b. It is adjusted to come to the corresponding position. In addition, since the cloth is displaced at the same time on both sides of the insertion plate in order to be displaced by the rollers 20a and 20b, the needle 74 is passed through the nose K to be cut at one side of the insertion plate. The fabric does not displace much on one side of the insertion plate 12a, 12b, and does not fall out of the nose K which the needle 74 cuts.

By such adjustment, as shown in FIG. 20, when the knitting nose K and the needle 74 of the cloth in the other surface side of the insertion board 12a, 12b are in the corresponding position, the needle 74 The silver is further extruded by the block pressing portion 80. As a result, as shown in Fig. 21, one needle 74 passes through the cutting nose K of the cloth on one side and the other side of the insertion plate 12a, 12b. Similarly, with respect to all the crocheting noses K on the other surface side of the insertion plate, the needle 74 is pierced on one side of the insertion plate 12a, 12b. And in step S13, when the needle 74 has passed through all the squeezing noses K, the sewing machine uses the guide 74 of the needle 74 and hooks 19a and 19b of these point needles 68. Linking is performed by 100.

In addition, the positional information of the crocheted nose area is stored in a recording apparatus (not shown) provided inside or outside the image processing apparatus 26, or the position of the point needle and circular knitting cloth is relatively relatively. It is input to a linking device having a function of changing, and is used when the automatic needle processing of the point needle into the crochet is performed.

In addition, in this embodiment, although the floating nose other than a crocheting nose was not extract | extracted by the crocheting nose area | region extraction part 36, the floating nose other than a crocheting nose is extracted beyond an area threshold. In consideration of the time required, the closest to the position is referred to the predicted position of the crocheted nose, which is set on the basis of the crocheted nose positional information when the unfinished socks W are placed on the insertion bodies 12a and 12b in advance. Extraction may be performed as a nasal area to cut off the label area of the floating nose located. If the area of the nose K to be cut off near the predicted position is not extracted, the above process may be repeated until the initial area threshold is lowered and the nose area to be cut off near the predicted position is extracted.

In addition, when making the point needle 68 cut into the nose K, it is not necessary to displace both the point needle 68 and the cloth. For example, the point needle 68 is held up, down, left, and right while the cloth is fixed. It may displace two-dimensionally and bring the point needle 68 to the position of the nose K which cuts off. Furthermore, by fixing the point needle 68, for example, by arranging rollers in the top, bottom, left, and right sides of the cloth, the cloth is displaced two-dimensionally in the top, bottom, left, and right sides, whereby the point needle 68 cuts the nose K. It may be in the position of.

In addition, in the linking device 1 for circular knitting cloth, the needle 74 of the point needle 68 is provided only on one side of the insertion plate, and the needle 74 is placed on one side of the insertion plate. K), and furthermore, the needle 74 also penetrates the crocheted nose K on the other side of the insertion plate. In this invention, the needle of the point needle is on one side and the other side of the insertion plate. Each of the needles on one side of the insertion plate to the knitting nose on one side of the insertion plate, and the needles on the other side of the insertion plate on the other side of the insertion plate. After returning to their needles, one may move the crocheting nose so that one needle passes through their crotch. In this case, it is preferable to press one of the needles into their knitting noses and then press the front part of the needles with the release preventing member in order to prevent their knitting noses from falling out of one of the needles.

In addition, in the above-mentioned ring knitting device 1 for circular knitting cloth, although the plurality of needles 74 were pierced in order from the end to the plurality of knitting noses K, in the present invention, first, the plurality of knitting noses K By passing the needle 74 only in the appropriate number of cutting noses K with a proper distance between the two, the remaining cutting noses K and the remaining needles 74 correspond to each other. The remaining needles 74 may be made to pass through the nose K at the same time.

In addition, in the linking device 1 for circular knitting fabric described above, when the positions of the plurality of knitting noses K and the positions of the plurality of needles 74 correspond to each other, those needles 74 You can swell at the same time as the floating nose (K).

In addition, although this invention was shown and demonstrated in detail about this invention, it is used as a simple illustration and an example, It is clear that it should not be understood that it is limited, and the mind and range of this invention are limited only by the attached language of the claim.

According to the present invention, the position of the satin nose of the circular knitting fabric can be accurately detected, and the circular knitting fabric can be accurately linked to a desired size and shape.

Claims (24)

A process of extending the circular knitting cloth by inserting an insertion body into the circular knitting cloth having a stuffy nose; A process of photographing a multi-tone image including an image of a cutting nose of an electric circular knitting cloth extended by an electric insertion tube, A cutting nose detection method of circular knitting cloth, comprising the step of detecting the position of the cutting nose by image processing an electric multi-tone image. The cutting nose detection method of the circular knitting fabric of Claim 1 including the process of extending | stretching an electric circular knitting cloth to the insertion direction of an electric insertion body. The method of claim 1 or 2, wherein the step of picking up the electric multi-gradation image is performed on a plane. The method of claim 1, wherein the step of picking up the electric multi-tone image is performed by using light transmitted from the inside of the electric circular knitting cloth to the outside. The inserter having a slit is used as an electric inserter according to claim 1, The process of picking up an electric multi-gradation image includes a step of irradiating light to an electric slit, and a step of using light transmitted from one outside of the electric circular knitting cloth to the other in the electric slit. Floating nose detection method. The process according to claim 1, wherein the step of detecting the position of the electric nose is Converting an electric multi-tone image into a binary image, Converting a binary image into a label image; The number of constituent pixels in each labeled region included in the electric label image is counted, and the electric frying has a constituent pixel number larger than the value set on the basis of the minimum constituent pixel number of the region formed by the nose in the electric label image. Generating an extraction label image extracting only an area; A cutting nose detection method of circular knitting cloth, comprising the step of calculating the position of each cutting nose by calculating the position of each region included in the electro-extraction label image. 7. The process of claim 6, wherein the step of converting into an electric binary image comprises: dividing the electric multi-tone image into a plurality of small regions, and determining the binarization threshold value for each small region based on image characteristics of the small region; Including, cutting nose detection method. An intubation body which is inserted into the circular knitting cloth having a snuffing nose to extend the circular knitting fabric; Imaging means for picking up a multi-tone image including an image of a crocheted nose of an electric circular knitting cloth extended by an electric insertion body; A crocheting nose detection apparatus for circular knitting cloth, comprising a crocheting nose detecting means for detecting the location of the crocheting nose by image processing an electric multi-tone image. 9. The upper clamping means according to claim 8, further comprising: an upper clamping means for pinching the upper part of the nose of the circular circular knitting cloth and moving in the insertion direction; A crocheting nose detection apparatus for circular knit fabrics, having a lower clamping means for pinching the lower portion of the crocheted nose and moving in the insertion direction. The surface of the electric inserter according to claim 8 or 9, wherein at least a cutting nose is disposed is formed in a planar shape, The image pick-up device of the round knitting cloth is arrange | positioned so that an imaging direction may become perpendicular | vertical to the width direction of the planar surface of an electric insertion body. The cutting edge nose detection apparatus of the circular knitting cloth of Claim 8 or 10 which has a light emitting means. The electric insertion tube according to any one of claims 8 to 11, which has a slit, A crocheting nose detection device having a circular knitting cloth having lighting means for irradiating light to an electric slit. The nose cutting means according to any one of claims 8 to 12, wherein Means for converting an electric multi-tone image into a binary image, Means for converting an electric binary image into a label image; The number of constituent pixels in each labeled region included in the electric label image is counted, and the electric frying has a constituent pixel number larger than the value set on the basis of the minimum constituent pixel number of the region formed by the nose in the electric label image. Region extraction means for generating an extraction label image extracting only the region; A crocheting nose detection device for circular knitting cloth, comprising means for obtaining the position of each crocheting nose by calculating the position of each region included in the electric extraction label image. 14. The apparatus according to claim 13, wherein the means for converting into an electric binary image divides the electric multi-tone image into a plurality of small regions, and means for determining the binarization threshold for each small region based on the image characteristics of the small region. Included, the cutting nose detection device. An intubation body which is inserted into the circular knitting cloth having a snuffing nose to extend the circular knitting fabric; Imaging means for picking up a multi-tone image including an image of a crocheted nose of an electric circular knitting cloth extended by an electric insertion body; Cutting nose detection means for detecting the position of the cutting nose by image processing the electric multi-tone image; Means for matching the point needle to the position of the cutting nose detected by the electric cutting nose detecting means; Means to let electric needle go through each stuffing nose, A linking device for circular knitting cloth, having a sewing machine for linking a cutting nose through the electric needle. The upper clamping means according to claim 15, further comprising: an upper clamping means for clamping an upper portion of the cutting nose of the circular circular knitting cloth and moving in the insertion direction; A linking device for circular knitting cloth, having a lower clamping means for pinching the lower portion of the nose of the electric circular knitting cloth and moving in the insertion direction. The surface of the electric insertion body of claim 15 or 16, wherein at least a cutting nose is disposed is formed in a plane shape, The electrophotographic means is a linking device for circular knitting cloth, wherein the imaging direction is arranged so as to be perpendicular to the width direction of the planar surface of the electric insertion body. 18. The linking device for circular knitted fabric according to any one of claims 15 to 17, wherein the electric insertion body has light emitting means. The electric insertion tube according to any one of claims 15 to 18, which has a slit, A linking device for circular knitting cloth, comprising illuminating means for irradiating light to the electric slit. The nose cutting means according to any one of claims 15 to 19, wherein Means for converting an electric multi-tone image into a binary image, Means for converting an electric binary image into a label image; The number of constituent pixels in each labeled region included in the electric label image is counted, and the electric frying has a constituent pixel number larger than the value set on the basis of the minimum constituent pixel number of the region formed by the nose in the electric label image. Region extraction means for generating an extraction label image extracting only the region; A linking device for circular knitting cloth, comprising means for obtaining the position of each crocheted nose by calculating the position of each region included in the electric extraction label image. 21. The apparatus according to claim 20, wherein the means for converting into an electric binary image comprises: means for dividing an electric multi-tone image into a plurality of small regions, and determining a binarization threshold value for each small region based on image characteristics of the small region; Containing, circular ring cloth linking device. 22. The apparatus according to any one of claims 15 to 21, wherein the means for matching the point needle to the position of the electric knitting nose comprises: means for displacing the position of the electric knitting nose in one direction; And a means for displacing in the direction. The linking device according to any one of claims 15 to 21, wherein the means for matching the point needle to the position of the electric knitting nose includes a means for displacing the electric point needle two-dimensionally. The linking device according to any one of claims 15 to 21, wherein the means for matching the point needle to the position of the electric knitting nose includes a means for displacing the position of the electric knitting nose two-dimensionally. .