JPH08206377A - Linking method - Google Patents

Abstract

PURPOSE: To omit a hook-up means and realize a simple automatic linking, as to the knit without necessity of sticking a needle while performing hook-up out of two sheets of knits to be sewn together. CONSTITUTION: The stitch-up parts of first and second knits 2 and 3 are stitched up by a sewing machine 23. And, while hooking up the specified stitch of the stitching-up section of the first knit, a needle is stuck through the needle row of the first point needle 4, and the section to be stitched up of the second knit 3 is kept in the length equal to the length L of the section to be stitched up of the first knit 2 in the state that the needle is stuck through. While positioning the end of the second knit 3 in the length-kept state, where the needle is stuck through the needle row common to the first knit, and two sheets of knits 2 and 3 in needle-stuck-through state are stitched up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linking device for sewing two knitted fabrics, and in particular, it does not pick up one knitted fabric but only the other knitted fabric. The present invention relates to a linking method for stitching knitted fabrics.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 3-49478 discloses a typical automatic linking device. In the linking device, the stitches of the two sewn fabrics are automatically picked up for needle sticking. That is, the state of the stitches of the stitched portion of each knitted fabric is imaged with a camera, and based on the two-dimensional information obtained by the camera, the position information of the stitch to be stabbed is indexed by the image processing device and indexed. The fine adjustment means for the knitted fabric is controlled based on the position information to guide the stitch to be stabbed to the needle stab position. Also,
The rough adjusting means is operated based on the signal from the knitted fabric edge sensor to guide the knitted fabric so that the end of the knitted fabric comes to the position of the knitted fabric edge sensor.

According to the above-mentioned linking means, the needles are accurately stabbed in the predetermined stitches to be sewn on each of the two knitted fabrics. However, when performing linking that does not require needle pricking on one of the knitted fabrics, a knitting fabric edge sensor, a roller, an image processing device, etc. for picking up the eye is required for one of the knitted fabrics. No, it is over-equipped in conventional devices.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to realize a simple automatic linking by omitting the eye picking for the knitting cloth which does not need needle puncture while picking the eye out of the two stitched knitted cloths. is there.

[0005]

In view of the above object, the present invention provides an automatic linking device for sending stitched portions of first and second knitted fabrics to a sewing position and sewing them by a sewing machine. The predetermined stitches of the second knitted fabric are pierced while picking up the needle row, and all the sewn portions of the second knitted fabric are A needle row common to the first knitted fabric while holding the same length as the first knitted fabric while positioning the end of the second knitted fabric in the holding state of the above length. The two knitted fabrics which are in a needle-through state are sewn by a sewing machine in a state of being pierced through. In addition,
The length of the sewn portion of the first knitted fabric, which is stabbed through the needle row, means that when the sewn portion of the first knitted fabric is stabbed over the entire area, The length of the part to be sewn together. This length is calculated based on the pitch of the needle and the number of stitches of the stitched portion, or is obtained by making a test piercing state in advance and measuring this.

Here, the second knitted fabric is directly pierced directly into the needle row which is piercing the first knitted fabric, or is pierced into another needle row one after another, and then transferred to the first needle row. It is pierced through the same needle row as the knitted fabric.

The sewn portion of the second knitted fabric is guided along an approximate stitching line while being held at the length of the sewn portion of the first knitted fabric in a state where all needles have been stabbed. , Needle puncture without eye pick-up, so-called blind puncture. Then, after the second knitted fabric is directly blindly stabbed into the needle row piercing the first knitted fabric, the two knitted fabrics in the needle stabbed state are sewn, or the second knitted fabric is temporarily separated. After the needle row is blindly stabbed, one of the knitted fabrics is transferred between another needle row and the needle row stabping the first knitted fabric, and the needle row is stabbed in the common needle row. Sew a piece of knitted fabric. As a result, it is possible to perform highly accurate automatic linking with a simple structure in which the second knitted fabric is positioned at the end portion and is stabbed blindly. As the first knitted fabric to be pierced by the eye pick-up needle, when two knitted fabrics are sewn together, the knitted fabric whose sewn portion comes to the front side, that is, the side where the human eye is touched is set. .

[0008]

First Embodiment FIGS. 1 to 4 show an automatic linking device 1 for single attachment according to a first embodiment. In this embodiment, by transferring the first knitted fabric directly from the flat knitting machine to the needle row of the first linking needle, a predetermined stitch in the entire stitched portion of the first knitted fabric is preliminarily formed in the needle row. The second knitted fabric is placed on the belt while being pierced, and the second stitch is the stitch that is the starting point of the stitched portion.
The needle provided on the belt is pierced through the needle that is the end point of the stitched portion, and the needled portion of the second knitted fabric is held at a predetermined length. Then, while regulating the position of the end of the second knitted fabric, the second point knitting needle is pierced through the second knitted fabric without sequentially picking up the eye by the movement of the belt and the movement of the second point needle row, and thereafter, In this example, the second knitted fabric is transferred to the needle row of the first point needles so that the first and second knitted fabrics are overlapped with each other and sewing is performed.

In FIGS. 1 to 3, the first part such as an appendix
In the knitted fabric 2 of, the predetermined stitches of the sewn portion are
When it is the stitch of the final course in the knitting stage, it is transferred from the knitting needle on the flat knitting machine holding the stitch directly to the needle row of the first point needle 4 for linking. Then, by setting the rack 7 holding the first point needle row on the table 6, the first knitted fabric 2 rides on the table 6. The first point needles 4 are arranged laterally of the table 6 along a straight line in the feed direction and are arranged at a predetermined pitch on the rack 7
Fixed on top of. The rack 7 is movable in the feed direction inside the frame 8 and
A motor 9 attached to the motor and a pinion 10 driven by the motor 9 move in the feed direction at a predetermined speed.

On the other hand, in the second knitted fabric 3 such as the body knitting, the stitch at the starting point of the portion to be sewn is pierced by the second point needle 5, and the upper surface of the endless belt 11 near the stitch at the end point. The needle 12 fixed to is pierced and is held at a predetermined length L. Specifically, the distance between the second point needle 5 extending in the vertical direction at the needle stick position and the needle 12 fixed to the belt 11 becomes a predetermined length L,
The position of the needle 12 fixed to the belt 11 is changed to the pulley 14
Is set by rotating by an appropriate amount. And the second
First, the operator sets the knitted fabric 3 by needle sticking as described above. Here, the predetermined length L is set equal to the length of the sewn portion when all the predetermined stitches of the sewn portion of the first knitted fabric 2 are pierced with the first point needle 4. Has been done. The second point needle 5
Are attached to the outer peripheral surface of the rotary drum 13 that rotates in synchronization with the moving speed of the first point needle 4 at the needle tip at a pitch equal to the pitch of the first point needle 4. Here, the belt 11 and the rotary drum 13 constitute a knitted fabric feeding means.

The belt 11 is a timing belt,
It is wound around two pulleys 14 and the motor 15
It is designed to rotate synchronously in the same feed direction at a speed equal to the peripheral speed of the rotary drum 13. As a result, the second knitted fabric 3 rides on the belt 11 and follows the flat guide 16 positioned on the side of the belt 11 and the circular guide 17 which is substantially equal to the rotary drum 13 at the tip position of the belt 11. It is designed to move. The rotary drum 13 is rotated clockwise by a motor (not shown). During this movement process, the second point needle 5 is sequentially pierced in the second knitted fabric 3 in a so-called blind puncture state without picking up the eye. The protrusion amounts of the first point needle 4 and the second point needle 5 are both constant, and do not move in the longitudinal direction of the needle during rotation or linear movement.

In the process of feeding the second knitted fabric 3, the pair of knitted fabric end sensors 18 detect the end portion of the second knitted fabric 3 and shift the end portion in the knitted fabric width direction, that is, the knitted fabric. The second knitted fabric is moved by the drive means (not shown) in the axial direction, that is, the knitted fabric width direction while the positioning roller 19 is driven and rotated in accordance with the deviation in the direction orthogonal to the moving direction of the second knitted fabric. Positioning guide is performed so that the end portion of 3 is always located between the pair of knitted fabric end sensors 18. That is, of the pair of knitted fabric edge sensors 18, only the inner sensor guides the second knitted fabric 3 so that the knitted fabric is detected. For this reason, the portion of the second knitted fabric 3 to be sewn is located between the needle piercing position 80 and the roller 19 on a straight line that passes through the needle piercing position 80 and extends in the knitting fabric feeding direction.

As described above, in the first knitted fabric 2, the predetermined stitches of the sewn portion are held by the first point needle 4 in the needle stick state over the entire area of the sewn portion. At this time, the length of the sewn portion of the first knitted fabric 2 is L. Then, by the movement of the first point needle 4 in the feed direction, the first point needle 4 is fed to a sewing position near the sewing machine 21. At the same time, the second knitted fabric 3 has a predetermined length L
The second point needle 5 is sequentially pierced in the state of being held by the second point needle 5 without being picked up. The second knitted fabric 3 starts to engage with the first point needle 4 slightly before the needle stick position 80, and is completely in the needle stick position at the needle stick position 80. After that, the rotary drum 13 is guided to the sewing position by the rotation of the rotary drum 13, and in the middle thereof, the plate-like transfer means 22 is provided.
Is sequentially withdrawn from the second point needle 5,
It is transferred in the direction of the first point needle 4. Such a transfer operation is performed on the lower surface of the fixed transfer means 22 by a second operation.
The knitted fabric 3 comes into contact with the knitted fabric 3 and moves along the transfer device 22 as the second point needle 5 moves.

As a result, the first and second knitted fabrics 2,
3 is in a superposed state at the stitched portion and is guided to the sewing machine hanging position. Here, the sewing machine 21 is operated by the sewing operation of the sewing machine needle 23 and the looper 24, and
And the second knitted fabrics 2 and 3 are sewn together. At this time, eye picking is performed on the first knitted fabric 2 and the point needle is stabbed in a predetermined stitch of the stitched portion.
With respect to the knitted fabric 3, the eye picking operation is not performed in the process of piercing the second point needle 5. Therefore, the part where the eyes are not picked up is set to be the back side of the clothes.

[0015]

Embodiment 2 FIGS. 5 and 6 show an automatic linking device 1 for single attachment according to Embodiment 2, in which a first knitted fabric 2 is used.
In the example in which the second knitted fabric 3 is endless and the endless second knitted fabric feeding means is configured to correspond to the endless second knitted fabric 3, is there.

The first knitted fabric 2 is, similarly to the first embodiment, the first point needle 4 for direct linking from the knitting needle on the flat knitting machine.
Transferred to the needle row. Then, by setting the rack 7 holding the first point needle row on the table 6, the first knitted fabric 2 rides on the table 6. On the other hand, the sewn portion of the second knitted fabric 3 has an endless shape, and each roller 26,
It is set to 27 and 28. Guide roller 27, length measuring roller 28, and press roller 3 for the rotating drum 13.
The inter-axis distance of 0 is adjustable and is adjusted so that the winding length of the second knitted fabric 3 becomes a predetermined length L. The guide roller 27, the length measuring roller 28, and the press roller 3
Each of 0s is movable in the horizontal direction, and is provided on a bracket (not shown) so as to be rotatably fixed at the position after the movement adjustment. The length measuring roller 28 is the motor 2
Driven by 9. The shaft rotation speed of the motor 29 is set so that the peripheral speed of the length measuring roller becomes equal to the peripheral speed of the rotating drum 13, and the motor 29 rotates synchronously with the rotating drum 13. The rotary drum 13 is provided with the second point needles 5 such that the tip pitch thereof is the same as the pitch of the first point needles 4, and the movement of the second point needles 5 is the same as that of the first point needles 5. It is set to synchronize with the movement of the point hand 4. As a result, the circular second point needle 5
The movement of the needle row in the circumferential direction and the feed movement of the first point needle 4 in the linear direction are set to be the same. The press roller 30 nips the second knitted fabric 3 with the length measuring roller 28, and is driven to rotate with the movement of the second knitted fabric 3. Although the guide rollers 26 and 27 are configured to be driven to rotate by the movement of the knitted fabric, the guide rollers are not limited to this and are positively and synchronously rotated by a dedicated motor so as to be equal to the peripheral speed of the length measuring roller 28. You may Further, the pair of knitted fabric edge sensors 18 detect the end portion of the second knitted fabric 3 and, in accordance with the deviation in the width direction, both the pair of upper and lower positioning rollers 19 are arranged in the axial direction, that is, the knitted fabric width. By moving in the direction, the end portion of the second knitted fabric 3 which is pierced by the second point needle 5 is regulated. Also in this embodiment, the protrusion amounts of the first point needle 4 and the second point needle 5 are constant during movement of the needles.

Similar to the first embodiment, the first knitted fabric 2 has the predetermined stitches of the sewn portion preliminarily stabbed over the entire sewn portion, and the sewing machine is hooked in such a needle stab state. Sent to a position. At the same time, the second knitted fabric 3 is fed and guided by the rotation of the length measuring roller 28 and the press roller 30, and is pierced by the second point needle 5 in a state without picking up the eye and moved to the transfer position. And is transferred to the first point needle 4 by the transfer means 22 and superposed on the first knitted fabric 2. Then, the first and second knitted fabrics 2 and 3 in the overlapped state are sewn at the sewn portion by the sewing machine 21.

[0018]

[Third Embodiment] FIG. 7 shows an automatic linking device 1 for single attachment according to a third embodiment, in which the first knitted fabric 2 is pierced by needles while picking up eyes by image processing, and the second knitted fabric 3 is This is an example of feeding the sewing machine to the sewing position by a method similar to that of the first embodiment.

That is, the first knitted fabric 2 has the table 31
A pair of two-stage type knitted fabric edge sensor 3 placed on the
It is positioned in the knitted fabric width direction by the Nos. 2 and 33 and the positioning rollers 34 and 35, and is fed to a position for stitch indexing by rotation of the slack sensor 36 and the feed roller 37.

The operation of the positioning rollers 34, 35 and the feed roller 37 will be described below. The positioning roller 34 is rotatably supported and is provided to be axially reciprocally movable by an actuator (not shown). The pair of knitted fabric edge sensors 32 have the same configuration as the pair of knitted fabric edge sensors 18 of the first embodiment. The positioning roller 34 moves in the axial direction based on the knitted fabric detection signals of the two sensors 32 so that the end of the first knitted fabric 2 is located between the pair of knitted fabric end sensors 32. The positioning roller 34 is driven to rotate by the moving knitted fabric. The pair of knitted fabric edge sensors 33 also includes the pair of knitted fabric edge sensors 32.
It has the same configuration as. The positioning roller 35 can be positively rotated by a motor (not shown), and can be reciprocally moved in the axial direction like the positioning roller 34. The positioning roller 35 also includes the pair of knitted fabric edge sensors 3
The end of the first knitted fabric 2 is regulated between the pair of knitted fabric end sensors 33 by moving in the axial direction based on the knitted fabric detection signal from 3. The slack sensor 36 is attached to the side of the first knitted fabric 2 and at a position slightly higher than the second knitted fabric 2. The positioning roller 35 has a slack sensor 36.
Until the first knitted fabric 2 is detected, that is, the first knitted fabric 2
Rotates positively in front of the positioning roller 35 until a predetermined amount of slack is generated. The feed roller 37 rotates in synchronism with the feeding of the first knitted fabric 2 by a pair of hands 39 described later, and thereby feeds out the first knitted fabric 2 by a predetermined amount. The slack sensor 3 that the slack is eliminated by the feed roller 37 sending out the first knitted fabric 2.
When detected by 6, the positioning roller 35 rotates again to positively cause the slack. The feed roller 37 is also movable in the axial direction. Feed roller 37
When it is detected that the position of the first knitted fabric 2 is displaced by the image processing described later, the image processing device 42
By moving in the axial direction based on the command from
Correct the position of knitted fabric 2.

Here, the camera 38 takes an image of the first knitted fabric 2 illuminated by the light source 41 and sends it to the image processing device 42 as image data. The image processing device 42
The stitches of the first knitted fabric 2 to be sewn together are indexed from the image data, and the stitches to be pierced on the plane of the table 31 are positioned while the pair of hands 39 are expanded in the stitch expanding direction. In this way, the first positioning state
The knitted fabric 2 is pressed by the pair of sub-hands 40 at the needle stick position.

The knitting fabric guiding operation of the pair of hands 39 and the pair of sub-hands 40 will be described. The pair of hands 39 are movable in the separating direction and the approaching direction with respect to each other, and are further vertically moved by an actuator (not shown).
It can be moved forward and backward (the knitting fabric feeding direction) and left and right (a direction orthogonal to the knitting fabric feeding direction). At the beginning of the knitting fabric guide, both sides of the knitted fabric portion detected by the camera 38 are pressed, the stitches are separated from each other to expand the stitches, and the knitted fabric is pushed forward while pressing the knitted fabric based on the position information of the stitches to be pierced. And then to the left and right to guide and position the stitch to be punctured to the needle puncturing position.

At this time, the pair of sub-hands 40 ascend and move away from the first knitted fabric 2, and further move forward from the position shown in FIG. 7 and stand by at a position where they do not interfere with the pair of hands 39. There is. A pair of hands 3 that are separated from each other
When 9 guides the stitch to be stabbed to the stab position,
The pair of sub-hands 40 moves rearward to sandwich the needle puncture position as shown in FIG. 7, and further descends to press the first knitted fabric 2 and hold it at that position. At this time,
The distance between the pair of sub-hands 40 is set so as to enter between the pair of hands 39, so that the pair of sub-hands 40 does not interfere with the pair of hands 39. After that, a pair of hands 39
Moves up and releases the first knitted fabric 2. In this state, the first point needle 4 is projected by the needle pushing-out means 44, which will be described later, to pierce the positioned first knitted fabric 2. After that, the pair of hands 39 move backward, approach each other, and then descend. The pair of sub-hands 40 ascend, move forward, and wait again.

The lower rotary drum 43 is rotating at the feeding speed of the first knitted fabric 2, and at the needle sticking position, the needle pushing-out means 44 is operated by an actuator (not shown) to reach the first point. The needle 4 is projected. As a result, the first point needle 4 is pierced on the stitches of the first knitted fabric 2 which are picked up. Protruding first point needle 4
Is moved by a cam (not shown) along the circumferential direction over the half circumference of the rotary drum 43 while maintaining the protruding state. In this way, the first knitted fabric 2 rotates in the circumferential direction of the rotary drum 45 together with the first point needle 4, and reciprocates in the fixed or arrow direction while moving to the sewing machine hanging position. Transferring means 22 transfers the first point needle 4 to the second point needle 5.

On the other hand, while the second knitted fabric 3 is held at the predetermined length L by the feed guide means similar to that of the first embodiment, the second knitted fabric 3 is sequentially attached to the second point needle 5 at the needle sticking position. I will be pierced. In this embodiment, two pairs of knitted fabric end sensors 18 and positioning rollers 19 are provided, and each positioning roller 19 is knitted based on knitted fabric detection signals from the corresponding pair of knitted fabric end sensors 18. Control the edge of the ground. In this embodiment, the second point needle 5 is rotated by the rotary drum 45 in the same manner as the first point needle 4, and the second knitted fabric 3 is pierced by the needle pushing means 46 at the needle piercing position. , Has been sent to the sewing position.

In this way, the first and second knitted fabrics 2 and 3 are held by the second point needle 5, sewn by the sewing machine 21 at the sewing position, and fed by the pair of lowering rolls 47. It is supposed to be. The protruding first and second point hands 4 and 5 are returned to the retracted position by the rotation of the rotating drums 43 and 45 by a cam or the like (not shown).

According to this embodiment, the first and second point needles 4 and 5 both move in the circumferential direction by the rotating drums 43 and 45, project from the retracted position at the needle stick position, and are perpendicular to the knitting ground. Since the needle is pierced in the state, the needle piercing is sure and the stitches and shrinkage of the stitches are reduced.

In the example of FIG. 7, the edge of the second knitted fabric 3 is indexed by the pair of knitted fabric end sensors 18 and the positioning roller 19, but instead of these knitted fabric guiding means, As shown in FIG. 4, it may be constituted by a pair of guide walls 25 corresponding to the width of the second knitted fabric 3. In this case, if the second knitted fabric 3 is a rectangular knitted fabric such as a collar, the movement in the width direction can be sufficiently restricted by the two guide walls 25 facing each other in parallel. Here, it is desirable that the pair of guide walls 25 extend upstream from the needle stick position by a length corresponding to the length of the second knitted fabric 3 in the knitting fabric feeding direction. At this time, the first knitted fabric 2 is a body knitted fabric and is pierced with an eye picking needle.

[0029]

Fourth Embodiment FIG. 8 shows an automatic linking device 1 for single attachment according to a fourth embodiment. In this example,
The first knitted fabric 2 (for example, the body knitted fabric) is punctured while sequentially picking up the eyes in the same manner as in Example 3, but the second knitted fabric 3
(Attachment) is held at a predetermined length L by at least two needles 12, moved by rotation of the belt 11, and pierced by the transfer means 22 without directly picking up the needle row of the first point needle 4. It is an example of passing.

That is, the second knitted fabric 3 is held in a state where the first stitch and the last stitch of the portion to be sewn are pierced by the two needles 12 provided on the belt 11, respectively. Along with the movement of 11, the pair of knitted fabric edge sensors 18 and the positioning roller 19 are positioned, and are directly transferred to the first point needle 5 by the transfer means 22 at the transfer position. The first stitch of the second knitted fabric 3 is pierced by transferring the stitches, but the subsequent portion is pierced by the first point needle 4 in a state of being directly punctured without eye picking. In addition,
At least one of the two needles 12 provided on the belt 11 is provided so as to be positionally adjustable with respect to the belt 11 in the longitudinal direction of the belt 11.

According to this embodiment, the second knitted fabric 3 is the first
Since the expansion and contraction of the second knitted fabric 3 may adversely affect the needle stick pitch in the process of needle sticking to the point needle 4 of
It is effective for knitted fabrics with a low stretch ratio.

[0032]

Fifth Embodiment FIGS. 9 to 14 show an automatic linking device 1 for scissors according to a fifth embodiment. In the case of this embodiment, the first knitted fabric 2 is an accessory knitted fabric, and is linked in a state of being folded in two and in a state of sandwiching the end portion of the second knitted fabric 3.

In FIGS. 9 and 10, the first knitted fabric 2 is L
A pair of knitted fabric edge sensors 52 and positioning rollers 54, which are applied along the upper surface and the vertical surface of the character-shaped table 51 and correspond to the horizontal plane, and a pair of knitted fabric edge sensors 53, which correspond to the vertical surface, are positioned. Are positioned at both edge portions to be sewn together by a roller 55 for use, and then a pair of hands 56, 57, a pair of sub-hands 58, 59, cameras 60, 61 corresponding to each surface, and an image processing device 62 common to each surface. By this, it is positioned with the eyes picked up at the needle stick position. The L-shaped table 51 described above is fixed on a base (not shown) via a stay (not shown). In addition, the positioning rollers 54 and 5 of this embodiment
5, a pair of hands 56, 57 and a pair of sub-hands 5
8 and 59 are respectively applied to the upper surface and the vertical surface of the L-shaped table 51 by performing the same operations as the positioning roller 34, the pair of hands 39 and the pair of sub-hands 40 in FIG. 7 of the third embodiment. The first knitted fabric 2
Guide while positioning each part of.

On the other hand, the first point hand 4 is connected to the table 5
The first point needles 4a in the vertical direction are fixed to the tip of a lever 64 supported by a pin 65 in the horizontal direction with respect to the holder 63. As the holder 63 moves in the feed direction, it is guided to the needle sticking position while sliding on the upper surface of the fixed auxiliary cam 64, and is pushed up by the needle pushing-up means 66 at the needle sticking position, so that the point needles are aligned on the table 51. The slit portion formed along the line is pierced at the needle piercing position of the horizontal portion of the first knitted fabric 2, and then the height for needle piercing is maintained by the fixed cam 68. The needle stick position is set directly above the first point needle 4a located between the fixed auxiliary cam 64 and the fixed cam 68.

The horizontal first point needle 4b
Is provided in a groove or the like of the holder 63 so as to be movable back and forth at a predetermined pitch, and is fitted into the groove cam 69 at the butt portion 82 at the rear end. The groove of the groove cam 69 that fits with the pad portion 82 is formed to extend in the feeding direction of the first knitted fabric 2. Specifically, in the knitting fabric feeding direction, the portion before the needle stick position is the L-shaped table 51.
Is formed so as to extend parallel to the vertical plane of the knitted fabric, and the portion corresponding to the needle puncture position from immediately before the needle puncture position in the feeding direction of the knitted fabric is formed in a direction gradually approaching the vertical plane of the L-shaped table 51. Further, the downstream portion of the knitted fabric in the feed direction from the needle stick position in the knitted fabric feed direction again extends parallel to the vertical plane. Therefore, the holder 63
By moving the feed direction of the
To the vertical surface of the first knitted fabric 2 which is projected from a slit portion similar to that on the above-mentioned upper surface to the vertical surface and is in a state of eye picking up.
The needle is stabbed in the stitch. In this way, the first knitted fabric 2 is folded into an L shape along the table 51, and is held by the needle rows of the first point needles 4a and 4b in the vertical direction and the horizontal direction in the eye-catching state. The needles are guided to the sewing position by the movement of the needle row of the first point needles 4a and 4b.

On the other hand, as in the second embodiment, the second knitted fabric 3 has its peripheral length maintained at a predetermined length L, and the roller 1
The knitted fabric is guided along the guide 17 while the end portion of the knitted fabric is positioned and blindly sewn by the transfer means 22.
Is transferred from the second point hand 5 to the first point hand 4 in the vertical direction. Then, the vertical portion of the first knitted fabric 2 is superposed on the upper surface of the second knitted fabric 3 by the L-shaped transfer means 70. In this state, the first and second knitted fabrics 2 and 3 are sewn together by the sewing machine 21.

11 to 14 show the above-described operation as the first operation.
The operation sequence of the second knitted fabrics 2 and 3 viewed from the feeding direction is shown. In FIG. 11, the first knitted fabric 2 is applied along the L-shaped table 51. In this state, the vertical and horizontal first point hands 4a, 4b are both in the retracted position. The sewn portions of the first knitted fabric 2 applied to the upper surface and the vertical surface of the L-shaped table 51 include the positioning rollers 54 and 55 and the pair of hands 5.
6, 57 and a pair of sub-hands 58, 59,
You will be guided sequentially to the needle stick position.

As shown in FIG. 12, at the needle sticking position, the first point needle 4a in the vertical direction is lifted to be stuck in the horizontal stitch of the first knitted fabric 2 in a state where the stitches are picked up, and the needle is also leveled. The first point needle 4b in the direction is the groove cam 6
Driven by 9, the needle is pierced in a state where the vertical stitch of the first knitted fabric 2 in the vertical direction is caught. On the other hand, the second knitted fabric 3
Is pierced with the second point needle 5 in a blind state, and is brought into a butted state with the first point needle 4a in the vertical direction.

Next, as shown in FIG. 13, the fixed transfer means 22 transfers the second knitted fabric 3 from the second point needle 5 to the first point needle 4a in the vertical direction. In this state, the stitched portion of the first knitted fabric 2 and the stitched portion of the second knitted fabric 3 are in a superposed state.

Then, as shown in FIG. 14, the vertical portion of the first knitted fabric 2 is changed from the first point needle 4b in the horizontal direction to the first point needle 4a in the vertical direction by the transfer means 70. It is transferred and superposed on the upper surface of the second knitted fabric 3. In this way, the first knitted fabric 2 becomes the second knitted fabric 3
The sewn part will be sandwiched. Specifically, after the second knitted fabric 3 is transferred, the first point needle 4b in the horizontal direction further projects, and the tip thereof approaches the tip of the first point needle 4a in the vertical direction. The groove cam 69
It is assumed that the groove is formed so as to further project the first point needle 4b from around where the first point needle 4b passes the transfer means 22. Transferring means 70
Has two inclined surfaces extending at respective predetermined angles with respect to the longitudinal directions of the first point needles 4a and 4b. When these two inclined surfaces are developed, they are shown as in FIG. The vertical portion of the first knitted fabric 2 moves along with the first point needle 4b, and the transfer means 70
By gradually moving to the tip of the first point needle 4b while being in contact with one inclined surface, and then moving to the rear end of the first point needle 4a while being in contact with the other inclined surface, the transfer is performed. To be done. After that, the sewing machine 20 becomes the sewing machine needle 2.
By the action of 3 and the looper 24, the first and second knitted fabrics 2 and 3 are sewn together in a state of pinching and linking with a sewing thread (not shown).

[0041]

Other Embodiments In the above embodiments, the elements of each embodiment can be replaced with those of the same function of other embodiments.

[0042]

According to the present invention, the following effects can be obtained. Second
The knitted fabric is stabbed into the needle row without eye picking up, but the sewn portion of the second knitted fabric is held at a predetermined length, and the end of the second knitted fabric is Since the needle is pierced while the parts are positioned, the needle piercing position is roughly along the stitching line, and the start and end points of the sewn portions of the two knitted fabrics that are pierced through the common needle row also coincide. There is. Therefore, it is possible to perform highly accurate automatic linking with a simple structure in which one knitted fabric is pierced while being positioned at the end.

[Brief description of drawings]

FIG. 1 is a schematic front view of an automatic linking device according to a first embodiment.

FIG. 2 is a schematic plan view of the automatic linking device according to the first embodiment.

FIG. 3 is a cross-sectional view of a feed portion of a first knitted fabric and a first point needle.

FIG. 4 is a sectional view of a feeding portion of a second knitted fabric.

FIG. 5 is a schematic front view of the automatic linking device according to the second embodiment.

FIG. 6 is a schematic plan view of an automatic linking device according to a second embodiment.

FIG. 7 is a schematic side view of an automatic linking device according to a third embodiment.

FIG. 8 is a schematic side view of an automatic linking device according to a fourth embodiment.

FIG. 9 is a schematic front view of an automatic linking device according to a fifth embodiment.

FIG. 10 is a cross-sectional view of the first and second knitted fabrics in the arrangement direction of the first and second point needles.

FIG. 11 is an explanatory diagram of a positional relationship between first and second point hands.

FIG. 12: pierce the first knitted fabric with a first point needle,
It is explanatory drawing of the state which penetrated the 2nd knitted fabric with a 2nd point needle.

FIG. 13 is an explanatory diagram showing a state in which the second knitted fabric is transferred from the second point needle to the vertical first point needle.

FIG. 14 is an explanatory diagram showing a state in which the vertical portion of the first knitted fabric is transferred from the first point needle in the horizontal direction to the first point needle in the vertical direction by the transfer means.

FIG. 15 is a development view of the relative positional relationship between the first and second point needles and the transfer means.

[Explanation of symbols]

 1 Automatic Linking Device 2 First Knitted Fabric 3 Second Knitted Fabric 4 First Point Needle 5 Second Point Needle 11 Belt 12 Needle 13 Rotating Drum 18 Pair of Knitted Fabric Edge Sensors 19 Positioning Roller 21 Sewing Machine 22 Transferring means 25 Guide wall 28 Measuring roller 43 Rotating drum 45 Rotating drum

Claims (3)

[Claims] 1. An automatic linking device for feeding the first and second knitted fabrics to a sewing position and sewing the stitched portions of the first and second knitted fabrics by a sewing machine to determine a predetermined stitched portion of the first knitted fabric. The stitches of the second knitted fabric are pierced while picking up the stitches in the needle row, and the length of the sewn portion of the first knitted fabric that is pierced with respect to the needle row Holding the same length, and staking the portion of the second knitted fabric to be sewn into the needle row common to the first knitted fabric while positioning the end of the second knitted fabric in the holding state of the above length. As the threaded state, 2 of the needle threaded state
A linking method characterized by sewing a single knitted fabric. 2. A second knitted fabric is placed on a belt,
The stitched portion of the knitted fabric is pierced with the needle on the starting point side and the needle on the ending point side to hold the belt at a predetermined length and move the belt in synchronization with the feed speed of the first knitted fabric. The automatic linking method according to claim 1, wherein: 3. A length measuring roller for synchronizing the endless second stitching portion with the feed speed of the first knitted fabric, and a plurality of needles on the circumference to pierce the second knitted fabric. 2. A rotary drum that rotates while guiding while being held at a sewing position is held at a predetermined length.
The automatic linking method described.