JP2876087B2 - Pattern matching device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pattern matching device of a reversing machine for performing pattern matching between pieces of cloth while overlapping the pieces of cloth.

[Prior art] In the case where pieces of cloth unwound from a reversing machine are piled up on a reversing stand, and they are cut together in a later process, if the piece of cloth is a pattern, pattern matching is performed when the pieces are overlapped. There is. This pattern matching is to superpose the patterns of the piece of cloth one by one without any positional deviation with a certain precision.

Conventionally, such pattern matching is performed by holding both ends of a stretched cloth by hand, and piercing a predetermined place of the cloth with a needle provided on a table different from the spreading base or the spreading base. It mainly consisted of manual work.

[Problems to be Solved by the Invention] However, in the conventional pattern matching, although it depends on the width of a piece of cloth, it is usually necessary for different persons to hold one end and the other end in the width direction of the stretched piece of cloth. Therefore, at least two workers are required to handle each piece of cloth, and such work must be performed not only on each piece of cloth, but also There is an element that has to perform pattern matching depending on the intuition and experience of the operator, and there is a problem that it is difficult to perform high-precision pattern matching at the expense of labor and labor.

The present invention has been made in view of the above problems, it is possible to automate the pattern matching that has relied on the conventional manual work, and to allow the pattern matching to be performed in parallel with the rolling by a reversing machine, An object of the present invention is to provide a pattern matching device for a reversing machine that can easily improve the reliability and accuracy of pattern matching, as well as reducing the number of workers and improving productivity.

[Means for Solving the Problems] A pattern matching device for a reversing machine according to the present invention comprises a rewinding material feeding guide plate provided in a reversing machine that extends while traveling along a revolving base. A pattern recognizing means for recognizing a pattern position on the gantry of the cloth being fed out on the guide plate at a position near the tip, and an initial pattern position of the cloth on the gantry are registered in advance, Control means for comparing the initial pattern position with the recognized pattern position recognized by the pattern recognition means; and initializing the recognized pattern position by correcting the position of the cloth at the tip of the guide plate according to a command from the control means. It is provided with pattern position correcting means for adjusting to the pattern position, and means (positioning means) for positioning the cloth on which the pattern position has been adjusted by the pattern position correcting means on the spreading base. The pattern position correcting means is provided at a plurality of positions in the width direction of the feeding guide plate, and the pattern position correcting means corrects the position of the cloth at the tip end of the guide plate in accordance with a command from the control means. The present invention also includes a configuration in which is performed individually.

[Operation] The pattern matching device having this configuration operates as follows.

The control means compares whether or not the pattern position of the cloth recognized by the pattern recognition means on the reversing table is different from a previously registered initial pattern position. Command the position correction means to do so,
Based on the command, the pattern position correcting means corrects the position of the cloth and adjusts both pattern positions. When the positions of the two handles are matched in this way, the cloth is positioned on the spreading base by the positioning means. Therefore, the recognition pattern positions of all the cloths stacked by spreading are adjusted to the registered pattern position common to them, and the pattern matching between the cloths is performed accurately.

If the position of the cloth is corrected at a plurality of locations in the width direction of the guide plate by a plurality of pattern position correcting means, accurate pattern matching is performed over the entire width of a wide cloth. .

[Example] Hereinafter, a pattern matching device of a reversing machine according to an example of the present invention will be described.

In FIG. 1, reference numeral 1 denotes a spreading table, along which the spreading machine 2 travels back and forth. As shown in FIGS. 8 and 9, the spreading member 1 has a plurality of parallel slit-shaped openings 11 extending in the running direction of the spreading machine 2. The positioning means 3 for the cloth is accommodated in the lower part of the spreading base 1. The positioning means 3 is formed by arranging a plurality of needles 32... On a support frame 31 extending in the width direction of Nobesakadai 1 and vertically projecting the needles 32.
Is provided at a location corresponding to. This positioning means 3
Has an elevating mechanism 4, and the elevating mechanism 4 shown is a drive motor.
Screw shaft 42 rotated forward or backward by 41
And a nut body 43 screwed to the screw shaft 42, and a link 44 connecting the nut body 43 and a predetermined portion of the support frame 31. The screw shaft 42 rotates in the forward or reverse direction. Then, when the nut body 43 is horizontally moved to the left or right, the link 44 rises or falls along with the horizontal movement so that the support frame 31 is moved up and down. The configuration of the elevating mechanism 4 is not limited to the illustrated example as long as the positioning means 3 can be moved up and down to move the needle body 32 up and down with respect to the upper surface of the spreading table 1. Reference numerals 44a and 44b denote connecting shafts of the link 44 to the nut body 43 and the support frame 31, respectively. The elevating mechanism 4 is mounted on a movable base 45 which is moved in the traveling direction (arrow A) of the spreading machine 2 along a rail 12 provided on the spreading base 1 side. Therefore, by moving the movable table 45 in the direction of arrow A, the position of the needle body 32 of the positioning means 3 can be set at a desired position on the spreading table 1, and the needle is moved by operating the lifting mechanism 4. The body 32 can be protruded from the opening 11 onto the Nobesaka stand 1 or housed below the Nobe stand 1. Although only one movable table 45 on which the positioning means 3 having the elevating mechanism 4 is installed may be provided on the rail 12, consideration may be given to setting a plurality of pattern matching positions such as a long cloth. If so, it is desirable to provide a plurality of them.

As shown in FIG. 1, the reversing machine 2 includes a reversing machine main body 21 having running wheels 22 driven by a driving device (not shown), a rewinding roll 24, a feeding roll 25, and a cloth support frame 26. Equipped with the deflecting unit 23, the deflecting rolls 27a, 27a and the auxiliary roll 2
An original fabric support unit 27 having 7b and 27b, a cloth cutting device 28 having a cutter 28a, and the like are provided. In such a web spreading machine 2, the roll-shaped web 100 is mounted on the web supporting unit 27 and
And the reversing unit 23
Is fed forward.

Reference numeral 5 denotes a lifting unit. This lifting unit 5
Is attached to the elevating unit 5 via a vertical screw shaft 29 provided on the reversing machine main body 21 side and a nut body 51 separated therefrom. When the screw shaft 29 rotates in the forward or reverse direction, , And is moved up and down together with the nut body 51. For example, a motor (not shown) is used as a rotation drive source of the screw shaft 29. The mechanism for raising and lowering the lifting unit 5 does not have to be a mechanism combining the screw shaft 29 and the nut body 51.

The elevating unit 5 is provided with a feeding guide plate 6 extending obliquely downward, a pattern position correcting means 7, and a pattern recognizing means 8.

The feeding guide plate 6 has a horizontal portion 61 at a lower end, and a concave portion 62 at a plurality of positions of the horizontal portion 61 as shown in FIG.
, And each of the concave portions 62 has the individual needle body described above.
32 are supported. The feeding guide plate 6 has a role of feeding the cloth C fed out of the spreading machine 2 onto the spreading base 1 while supporting the cloth C.

The handle position correcting means 7 includes a holding frame 71 having a U-shape in plan view.
A mechanism (forward mechanism) 72 for moving the holding frame 71 back and forth within a certain range, and a mechanism (vertical movement mechanism) 73 for moving the holding frame 71 up and down within a certain range. Forward / reverse mechanism 72
Can be easily configured by combining the screw shaft 72a and the nut body 72b, but it goes without saying that other configurations may be used. The same applies to the vertical movement mechanism 73. In the handle position correcting means 7, a vertical movement mechanism
The holding frame 71 is moved downward by 73, and the fabric C on the horizontal portion 61 of the feeding guide plate 6 is held by the holding frame 71 as shown in FIG. By moving forward or backward as indicated by X, the cloth C held by the holding frame 71 slides forward or backward on the horizontal portion 61.

The pattern recognizing means 8 is constituted by a camera having a function of capturing an image of a pattern of the cloth fed out to the horizontal portion 61 of the feeding guide plate 6 and projecting the image on the monitor M. This pattern recognition means 8
Is connected to a traversing mechanism 81, which can reciprocate in a range over substantially the entire width of the horizontal portion 61 of the feeding guide plate 6 by the action of the traversing mechanism 81, and the traversing mechanism 8 Pattern recognition means 8 at the desired position on the frame 71
Is provided. The traversing mechanism 81 can be constituted by a known mechanism using a chain or a known mechanism using a screw shaft, not shown.

Reference numeral 9 denotes an operation panel. The operation panel 9 has built-in control means. In the control means, the operation method of the reversing machine 2,
In addition, the operation procedure of the pattern recognition means 8 and the pattern position correction means 7 and the necessary command system are controlled. That is, regarding the operation method of the reversing machine 2, the traveling control for the forward and backward movement of the reversing machine 2, the control for stopping the reversing machine 2 at a desired position, the feeding speed of the fabric C from the raw fabric 100. Is controlled.
As for the operation of the pattern recognizing means 8, control such as traversing the pattern recognizing means 8 and stopping above the holding frame 71 is performed. Regarding the operation of the pattern position correcting means 7,
Control of the forward / backward movement width of the presser frame 71 is performed. The control means has a function of registering an initial pattern position (described later) of the cloth C on the spreading table 1 in advance, and compares the initial pattern position with the recognized pattern position recognized by the pattern recognition means 8. And
A command function is provided for moving the pattern position correcting means 7 forward and backward based on the comparison result. Such control means are known.

 Next, the operation will be described.

Prior to the main operation for spreading and pattern matching, an initialization movement is performed for setting factors necessary for performing the main operation such as at which position on the spreading table 2 to perform pattern matching in the control means. Will be

This initialization operation is performed after setting the positions of the needles 32 of the positioning means 3 in accordance with the pattern of the cloth C. In which position of the needles 32... This includes an operation (needle search) for setting in the control means. In the needle search, for example, the reversing machine 2 is retreated at a low speed starting from the front end side of the reversing base 1 and, during the retreat, the light from the projector provided on the support frame 31 of the positioning means 3 is transmitted to a predetermined position of the elevating unit 5. The position of the needle body 32 searched in such a manner is received by a light receiver provided at the location, and the position of the needle body 32 searched in this manner is registered in the control means. In this operation, the reversing machine 2 is controlled to stop at the position of the needle 32.

 This operation is performed, for example, in the following manner.

In a state in which the needle body 32 of the positioning means 3 is accommodated below the spreading table 1, the cloth C is fed out while the spreading machine 2 is retracted from a predetermined position of the spreading table 1, and the first sheet spreading is performed. Do. In the course of the spreading, the spreading machine 2 temporarily stops at the position of the needle body 32, and pattern matching is performed at that position. This pattern matching,
The recognition-side position captured by the pattern recognition means 8, that is, the cloth C
The position of the handle on the gantry 1 is controlled by the action of the control means.
This is performed by comparing the pattern position (initial pattern position) registered in advance with the control means and operating the pattern position correcting means 7 according to a command from the control means based on the comparison result. The method of position correction is called a visual positioning system. That is, after the holding frame 71 is moved down by the vertical movement mechanism 73 of the handle position correcting means 7, the holding frame 71 is moved forward or backward by the forward and backward movement mechanism 72 as indicated by the arrow X in FIG. The pattern is slid forward or backward on the horizontal portion 61, and the pattern position of the cloth C during or after the sliding is recognized by the pattern recognizing means 8, and when the recognized pattern position at that time matches the initial pattern position, pattern matching is performed. finish. More specifically, the registered initial pattern position to the control means is the initial pattern position F ₁ indicated by a broken line in FIG. 7, indicated by a solid line pattern recognition position by the handle recognition means 8 before the handle together at the same time If you as a recognition pattern position F _2, is being controlled to match is advanced by the handle position correcting means as only arrow marks cloth C on the horizontal portion 61 is δ and the initial pattern position F _1. This pattern matching is performed at the holding frame 71 of each pattern position correcting means 7. Therefore, even if the cloth C is wide, pattern matching is performed at a plurality of locations in the width direction, so that the pattern position on the spreading base 1 is accurately determined over the entire width of the cloth. The texture of the cloth C (the texture of the weft or warp) may be used for the pattern recognition instead of the pattern.

The pattern of the individual holding frames 71... At all points is completed, and the cloth C is held in the horizontal portion until the patterned cloth C is positioned on the extension base 1 by the positioning means 3.
It has been held down to 61. That is, when pattern matching at all locations is completed, the elevating unit 5 is moved down, whereby the feeding guide plate 6 and the holding frame 71 are moved down as indicated by an arrow Y in FIG. Prior to this, the needle body 32 protruding by a predetermined amount above the spreading table 1 passes through the concave portion 62 of the descending guide plate 6 and penetrates into the cloth C to remove the cloth C. Positioning is performed on the spreading table 1. After that, all the pressing frames 71 move up and away from the cloth C, and the reversing machine 2 retreats to the next pattern matching position while performing the spreading. At the next pattern matching position, the same pattern matching as described above is performed.

When the first sheet is thus rolled, the cloth cutting mechanism 28
The piece of cloth is cut off by the
To the predetermined position of the second sheet. The second sheet and the pattern matching are performed by repeating the same operation as the first sheet. At this time, the needle 32 of the positioning means 3 is raised to a position slightly protruding from the first piece. FIG. 6 shows a state in which several pieces of cloth C are extended in this way, and subsequent pieces C are patterned.

In the pattern matching described above, if the pattern of the cloth C is a mixed color pattern, the pattern recognition by the pattern recognition means 8 may be inaccurate. In such a case, it is advantageous to binarize the pattern recognition by the pattern recognition means 8. This is pattern recognition means 8
Is to change the mixed color pattern to white and black and display it on the monitor M, and recognize either the white or black pattern.

In this embodiment, the positioning means 3 is configured to pierce the cloth C that has been extended from the needle body 32. However, the positioning means 3 is not limited to this configuration, and uses a weight such as a paperweight. And so on.

When the above-described pattern matching is performed, the initial pattern position and the recognized pattern position are not necessarily shifted only in the front-back direction.
That is, the initial pattern position and the recognition pattern position may be displaced not only in the front-back direction but also in the left-right direction, or may be displaced obliquely. It is difficult to correct the positional deviation in the left-right direction by the operation of the pattern position correcting means 7, and the oblique positional deviation can be corrected by the operation of the pattern position correcting means 7 if the deviation width is large. Disappears. Therefore, in order to prevent such a situation, the web spreading machine 2 of the embodiment is provided with a lateral displacement correcting device 200 and a skewing preventing device 300 in the raw fabric support unit 27.

As can be inferred from FIG. 2, the lateral displacement correcting device 200 is a device that corrects the position of the raw fabric support unit 27 in the leftward or rightward direction with respect to the main body 21 as indicated by arrows a and b.
For example, the movable member 21 supporting the original plate support unit 27
The screw body 201 is screwed together with a screw shaft 201 provided on the reversing machine main body 21 and the screw shaft 201 is rotated in a forward direction or a reverse direction by a drive motor (not shown). You. According to the lateral displacement correcting device 200, the dispensing position of the cloth C that is dispensed from the material support unit 27 can be corrected to the left and right, thereby eliminating the lateral displacement between the initial pattern position and the recognition pattern position described above. It is possible.

Also, as can be inferred from FIG.
The vertical shaft 310 attached to the movable member 210 supports the central portion in the width direction of the web support unit 27 on the swing itself, and the screw shaft 321 rotated in the forward or reverse direction by the drive motor 320. It is configured by screwing a nut body 322 provided on the side opposite to the support unit 27. In the skew prevention device 300, when the screw shaft 321 is rotated in the forward or reverse direction by the drive motor 320, the material support unit 27 is moved by the vertical center line Z-
Since the swing is made around Z, the skew of the handle of the cloth C can be prevented by appropriately setting the amount of rotation. FIG. 3 illustrates the operation of the anti-tilt device 300.
That is, when the web 100 supported by the web support unit 27 is twisted in the imaginary line with respect to the traveling direction A of the webbing machine 2, if the pattern F indicated by the imaginary line of the web 100 is Department
It may be located outside the range H that can be corrected by the pattern position correcting means 7 described above. When the pattern of the cloth C is adjusted in this state, the pattern is corrected by the pattern position correcting means 7 at the center in the width direction of the cloth C, and accurate pattern matching is performed. Pattern matching by means 7 becomes difficult. In such a case, the fabric support unit 27 is swung in a predetermined direction by the skew prevention device 300, and the patterns F at both ends of the cloth C can be corrected by the pattern position correcting means 7 as shown by a solid line in FIG. If it is kept within the range H, pattern matching by the position correcting means 7 will be performed accurately over the entire width of the cloth C. In this sense, the skew prevention device 300 is
This is useful as an auxiliary device of the pattern matching device described above.

By the way, there are two types of the raw material 100 used for rolling, a material wound in a roll shape with the table outside, and a material wound in a roll shape with the table inside. The rolling process itself by the reversing machine 2 can be performed regardless of whether the table of the cloth C fed to the rolling table 1 is up or down. However, when a visual positioning system using a camera is adopted as the pattern recognition means 8 as in the embodiment, depending on the pattern of the cloth C, it is more difficult to perform pattern recognition from the front than from the back in terms of pattern recognition accuracy. In order to achieve this, it is necessary for any of the above two types of raw materials 100 that the cloth C fed out to the gantry 1 has its face up. In consideration of this, the reversing machine 2 is provided with a lifter device.
400 is attached.

FIG. 4 illustrates a schematic configuration of the lifter device 400. In this device, screw shafts 410, 410 are respectively attached to outer frames 23a, 23a of the disassembling unit 23, nuts 411, 411 provided on the lifting platform 420 side are screwed to the screw shafts 410, 410, and the respective screw shafts 410, 410 are synchronized. 430 and the drive motor 440 via the transmission mechanism 450.
It is connected to 0. The lifting platform of this lifter device 400
As shown in FIG. 1, 420 is configured to move up and down in the space between the unwinding roll 24 of the unwinding unit 23 and the piece supporting frame 26.

The space between the unwinding roll 24 and the cloth support frame 26 is
The slack C ₁ that hangs down from the cloth C fed out from 0
And is formed to absorb the tension and the like applied to the cloth C at the time of rolling. Lifter device 400 above
The purpose is to facilitate mounting of the raw material 100 with the table inside in the raw material supporting unit 27 using the portion where the space is formed. That is,
As shown by the dashed line in FIG. 1, the lifting and lowering member 420 is raised, and the raw material 100 is placed thereon with the surface of the cloth C drawn out from the raw material 100 facing upward. If the roll 100 is rolled as indicated by an arrow V in FIG. 1, the web 100 is easily dropped into the web support unit 27, and the web C is fed out of the web 100 along with the rolling, and the web C is removed from the web support frame 26. Remains on anti-roll 24. Therefore, if the web 100 is mounted on the web support unit 27 in this procedure, it is possible to save the trouble of feeding out the fabric C from the web 100 mounted on the web support unit 27, and it is possible to easily set the web. . It should be noted that, even when the lifter device 400 is not provided, it is considered that the same operation is performed if the raw fabric 100 is placed between the unwinding roll 24 and the cloth support frame 26 and then rolled, but the heavy weight is heavy. Raw 10
If it is 0, it is not easy to roll over the solution roll 24.

[Effects of the Invention] According to the present invention, the pattern matching of a stretched piece of cloth is automated, and the pattern matching process is performed in parallel with the spreading by a reversing machine. At the same time as personnel and labor are reduced, high accuracy of pattern matching is easily achieved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a pattern matching device of a reversing machine according to an embodiment of the present invention, FIG. 2 is a schematic front view of a lateral displacement correcting device and a skew preventing device, and FIG. FIG. 4, FIG. 4 is a schematic front view of the lifter device, FIG. 5 is a partially broken plan view showing a main part of the pattern matching device, FIG. FIG. 8 is a view for explaining the operation of the handle position correcting means, FIG. 8 is a schematic plan view showing the spreading base and the positioning means, and FIG. 9 is a vertical sectional front view of the same. C: Cloth, 1: Spreading stand, 2: Spreading machine, 6: Feeding guide plate, 8: Pattern recognition means, F _1: Initial pattern position, F ₂ ...
... Recognition pattern position, 7 ... Position position correction means, 3 ... Positioning means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65H 45/00-45/30 D06B 1/00-23/30 D06C 3/00-29/00 D06G 1 / 00-5/00 D06H 1/00-7/24 D06J 1/00-1/12

Claims (2)

(57) [Claims] 1. A pattern matching device in a reversing machine that extends while running a dislodged piece of material along an extension table, wherein the pattern matching device is provided at a position near a tip end portion of a piece-feeding guide plate provided for the piece of material. A pattern recognizing means for recognizing a pattern position of the cloth on the gantry, which is being fed out on the guide plate, and an initial pattern position of the cloth on the gantry, are registered in advance,
Control means for comparing the initial pattern position with the recognized pattern position recognized by the recognition means; and correcting the position of the cloth at the tip of the guide plate by a command from the control means to change the recognized pattern position to the initial pattern position. A pattern matching device for a roll-to-roll machine, comprising: a pattern position correcting means for adjusting the pattern position on the spreading base; 2. A pattern position correcting means is provided corresponding to a plurality of positions in the width direction of the feeding guide plate, and the position of the cloth at the tip end of the guide plate in accordance with a command from the control means is provided by the pattern position correcting means. 2. The pattern matching device for a reversing machine according to claim 1, wherein the correction is performed individually.