JPH0999186A - Linking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate an unnecessary sewing and improve the working property in a device for sewing two knitting fabrics by use of a needle train having a plurality of needles juxtaposed thereon by providing a resting means for resting the sewing operation until the knitted loop to be normally sewed reaches a sewing position after the start of operation. SOLUTION: A knitting fabric 14 is bent in an L-shape by an L-shaped guide 92, one edge part is guided to a needle sticking position B1 by a pair of rollers 82 according to the rotation of drums 28, 30, and the other edge part is guided to a needle sticking position B2 by a pair of rollers 86. On the other hand, a knitting fabric 12 is guided to a needle sticking position B3 while being superposed on the outside of a guide 94 between the needle sticking positions B1 and B3 by a roller 90, and the needle 24 of the drum 28 is stuck thereto. In this case, a sewing device 22 has a resting means, so that the sewing operation is rested until the knitted loop to be sewed reaches a sewing position D, and a needle 100 is reciprocated through a crank arm by the operation of a motor when it reaches a position D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method in which a plurality of needles are pierced through a plurality of knitted fabrics, then sequentially pierced through a plurality of knitted fabrics while moving in a direction in which they are arranged, and further, together with the knitted fabrics, The present invention relates to a linking device that moves a needle and stitches the knitted fabric with a stitching means.

[0002]

2. Description of the Related Art As one of automatic linking devices for automatically sewing two knitted fabrics by using one or more needle rows in which a plurality of needles are arranged, that is, Japanese Patent Publication No. 3-49477, Japanese Patent Publication No. 3-49478, Japanese Patent Laid-Open No. 7-1243.
There is an apparatus described in Japanese Patent No. 51, etc.

In these automatic linking devices, the knitted fabric is placed on a table, the position or state of the stitch to be stabbed is detected for each knitted fabric by the detecting means, and the knitting fabric guiding means knits based on the detection result. While the position of the ground is corrected for each knitted fabric, the stitches of each knitted fabric are sequentially guided to the needle pricking position, and the needles of each needle row are moved in the juxtaposed direction at the needle pricking position while the needles of the corresponding knitted fabric The needles of both knitting fabrics and the needles of both knitting needles are sequentially moved closer to each other, and the stitches of the knitting fabric of one needle knitting needle are transferred to the needles of the other needle knitting needle at the transfer position. The two knitted fabrics that have been pierced with the needle are further moved, and both the knitted fabrics are sewn together by the sewing machine at the stitching position.

In the above-described automatic linking device, when a portion to be sewn, that is, a knitted fabric having an endless shape, and a knitted fabric having an endless shape or a non-endless stitched part are sewn together, When the knitted fabric is set on the linking device, the knitted fabric is positioned such that the table and one needle row are inside the endless stitched portion, and the knitted fabric having the endless stitched portion is manually prepared in advance. Is punctured by all the protruding needles of one or the other needle row, and the linking device is operated in that state.

As a result, the knitted fabric is guided to a predetermined needle pricking position by the operation of the automatic linking device, and is pricked at the needle pricking position, and the stitches of the knitting fabric of one needle row are transferred to the other needle. It is transferred to a row of needles and sewn with a sewing machine at a suture position downstream of the needle stick position. In this case, before the stitches to be sewn that have been correctly stabbed by the operation of the automatic linking device reach the stitching position, the stitches that have been temporarily stabbed pass through the stitching position.

However, as described above, in the automatic linking device for stitching two knitted fabrics, at least one of which has an endless stitching portion, the sewing machine is activated at the same time when the linking device is activated. The area from the needle-stitched stitch to the correctly needle-stitched stitch will be unnecessarily sewn and the thread in that area must be removed later.

The present inventor first pierces the first and second needle rows into one and the other edges of the first knitted fabric, respectively, while continuously moving the knitted fabric, and then the first needle. Piercing the row into the second knitted fabric, then transferring the other edge of the first knitted fabric stabbed by the second needle row to the first needle row,
After that, by sewing both knitted fabrics with a sewing machine,
A scissoring linking device was invented to sew both knitted fabrics with one knitted fabric sandwiched by the other knitted fabric (Japanese Patent Application No. 7-80671).

In this scissor linking device,
The first needle row has a first needle insertion position where one edge of the first knitted fabric is pierced and a second needle insertion position where the second knitted fabric is pierced.
The needle piercing position of No. 1, the transfer position of transferring the other edge of the first knitted fabric stabbed by the second needle train to the first needle train, and the stitching position of stitching both fabrics It is sequentially set in the moving direction of the needles of the first needle row.

Before starting the operation of the linking device, the first and second knitted fabrics are tentatively stabbed in advance at the corresponding stab positions by human hands or the like. When the linking device is operated in that state, the portions to be sewn of the first and second knitted fabrics, that is, the sewn portions, are guided to a predetermined needle puncturing position, needle puncture is performed at the needle puncturing position, and the transfer position is set. In, the other edge of the first knitted fabric is transferred to the first needle row, and is sewn by the sewing machine at the stitching position. Also in this case, the stitch that has been punctured by the needle passes through the stitching position before the stitch that is stitched by the needle puncturing reaches the stitching position.

However, in the linking device in which a plurality of needle sticking positions are set in the same needle row like the above-mentioned scissoring linking device, the sewing machine is operated at the same time as the start of the operation of the linking device. The area from the stitch to the properly needled stitch will be unnecessarily sewn and the yarn in that area must be removed later.

[0011]

An object of the present invention is to eliminate unnecessary sewing operations.

[0012]

According to the present invention, a plurality of needles are sequentially stabbed through a plurality of knitted fabrics while moving the needles in the direction in which they are arranged in parallel, and then the needles are further moved together with the knitted fabrics to remove the knitted fabrics. A linking device for stitching at a stitching position by a stitching means, a pausing means for deactivating a sewing operation from the start of the operation of the linking device until the stitch to be stitched that has been properly punctured reaches the stitching position. It is characterized by including.

The knitted fabric is preliminarily stabbed into one or more stitches by hand or the like, and is moved together with the needle row by starting the operation of the linking device. The knitted fabric is punctured at the needle puncturing position and sewn at the stitching position. The stitch that has been punctured by the needle is moved by the operation start of the linking device and passes through the stitching position. However, the suturing operation is not performed until the stitch to be sutured, which has been properly punctured by the needle, reaches the suturing position. When the stitches stabbed by the linking device reach the stitching position, the sewing operation is started. Therefore, according to the present invention, unnecessary sewing operation at the start of operation of the linking device is eliminated.

The pausing means is a means for stopping the operation of the suturing means, a means for retracting the suturing means to a position where the sewing machine needle does not reach the knitted fabric, or a knitted fabric in a needle stick state of the suturing means. Means for detaching from the needle in the foreground can be provided.

The start timing of the sewing operation is when the number of needles pierced after the operation of the linking device reaches a predetermined value.
For example, when the needle row has moved by a predetermined amount.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 6, a linking device 10 stitches an annular stitch portion of a knitted fabric 12 by sandwiching both edges of a strip-shaped or annular knitted fabric 14 in the width direction. Used as a device. Therefore, the knitted fabric 14 is stitched to the knitted fabric 12 at one edge and the other edge. For example, the knitted fabric 12 may be a knitted fabric in which a front body and a back body are sewn together, and the knitted fabric 14 may be an accessory knit such as a collar. When the knitted fabric 14 is a collar, the stitched portion of the knitted fabric 12 can be a neckline.

The linking device 10 includes an eye pick-up needle piercing device, ie, a needle moving mechanism 16 for picking up stitches to be sewn together and piercing a point needle in the stitches, and a knitting fabric guiding device 18 for guiding the knitted fabric to a predetermined needle piercing position. And both fabrics 12,
A common knitted fabric moving device 20 for moving 14 and the knitted fabric 1
And a suturing device 22 such as a sewing machine for suturing the two and 14 together.

The needle moving mechanism 16 uses the point needles 2
So that the directions of extensional movement of 4 and 26 are substantially orthogonal,
The needles 24 and 26 are arranged side by side in a circular shape on the needle rotation moving mechanism, that is, the drums 28 and 30, respectively. Needles 24 and 26, as shown in FIGS. 4 and 6, respectively,
It is held by the drums 28 and 30 and is rotatable with the drums 28 and 30 in the needle juxtaposition direction A. The drum 28 is integrally formed on the front surface of the drum 30.

A first needle stick position B1 and a third needle stick position B3 are set on the movement path of the needles 24 of one needle row. On the movement path of the needle 26 of the other needle row, the second
The needle stick position B2 is set. The positional relationship between the needle stick positions B1, B2, B3 in the rotational movement direction of the needle is shown in FIG.

The needle 24 of one needle row is divided into two positions, a first needle stick position B1 and a third needle stick position B3, by a groove cam as a needle reciprocating device, which will be described later, and a needle driving device, and is divided into two stages. After passing through the suture position D, it returns to the original position. The drums 28 and 30 are, as shown in FIG.
In the hollow shaft portion 32, the fixed frame 34 is rotatably supported by a fixed frame 34 via a bearing 36 and a groove cam 38, and is rotatably moved in a direction A by a motor 40 and gears 42 and 44 at a predetermined speed. A plurality of grooves 46 extending in the radial direction of the drum 28 are formed at equal pitches in the circumferential direction. The needle 24 is slidably received in a groove 46 inside the drum 28 in the radial direction of the drum 28, and the fixed guide 4 is rotated as the drum 28 rotates.
8 drives or reciprocates in the radial direction of the drum 28, that is, in the needle advance / retreat direction.

As shown in FIG. 5, the fixed guide 48 further advances the needle 24 advanced at the first needle stick position B1 to the third needle stick position B3, passes the suture position D, and then moves the needle 24. Retreat. The long needle drive member 50 is
In order to project the needle 24 at the first needle sticking position B1, it is swingably supported by a fulcrum pin 52 at a fixed position and is connected to a crank pin 58 by a crank rod 54.

The drive shaft 60 is rotatably supported by the hollow shaft portion 32, and also has a motor 62 and gears 64, 66.
Is rotated by. The retracted needle 24 is the drum 28
When the needle drive member 50 reaches the first needle stick position B1 with the rotation of the
Is moved up so that the needle 24 is pierced through the knitted fabric 14.

As shown in FIG. 4, the needles 26 of the other needle row are held by the drum 30 so as to be movable back and forth in the axial direction of the drum 30, and the groove cam 3 fixed to the frame 34.
8 is rotatably received, and is further rotationally moved in the feed direction A at a predetermined speed together with the drums 28 and 30 by the motor 40 and the gears 42 and 44. The needle 26 is reciprocated in the advancing / retracting direction by the groove cam 38 as the drum 30 rotates.

The knitted fabric 12 is wound around the cylindrical cover 70 and the drum 28 at the edge portion on the side to be sewn. The knitted fabric 14 is preliminarily prepared by hand, etc.
It is wrapped around 8,30. At this time, the knitted fabric 14 is stabbed with one or more stitches on one edge by one or more needles 24 including the needle at the first needle stab position B1, and one or more stitches on the other edge is sewn with the second stitch. The one or more needles 26 from the second needle sticking position B2 including the needle at the needle sticking position B2 to the transfer position C are stuck. On the other hand, the knitted fabric 12 has one or more stitches on the edge to be sewn at the third needle piercing position B3 including the needle.
The needle puncture is performed by one or more needles 24 from the vicinity of the needle puncture position B3 to the suture position D.

The knitted fabric 12 has the first and third needle stick positions B.
1 and B3 are arranged outside the arc-shaped guide 94, and one edge of the knitted fabric 14 is arranged inside the guide 94 between the first and third needle stick positions B1 and B3. It As a result, one edge of the knitted fabric 12 and the edge of the knitted fabric 14 to be sewn are finally set as shown in FIG. 7 (A).

The tips of the needles 24 and 26 are butted from the third needle stick position B3 to at least the transfer position C. Therefore, when the knitted fabrics 12 and 14 are set, one of the butted needles is retracted with respect to the other. As a result, a gap is formed between the abutting needles, which facilitates setting of the knitted fabric on the linking device 10. The preparatory work such as the first needle stick performed before the operation of the linking device 10 may be performed manually or automatically.

The knitted fabric 12 is rotationally moved by the cooperation of the feed roller 72 and the pressing roller 74 and the rotation of the drum 28. The knitted fabric 14 includes the feed roller 72 and the press roller 7
4 and the drums 28 and 30 are rotated to be rotated. The feed roller 72 and the drums 28 and 30 are rotated in synchronization with each other, and the needles 24 and 26 are
Is synchronized with the round trip of

The knitted fabric guide device 18 has a first knitted fabric guiding means for guiding one end of the knitted fabric 14 to the first needle sticking position B1 and a second needle pricking position B2 for the other end of the knitted fabric 14. The second knitted fabric guiding means for guiding the knitted fabric 12 and the third knitted fabric guiding means for guiding the end of the knitted fabric 12 to the third needle sticking position B3.

The first knitted fabric guide means detects the one end of the knitted fabric 14 on the upstream side of the first needle stick position B1 and a pair of knitted fabric end sensors 80 output signals. And a pair of rollers 82 for adjusting the position of one edge of the knitted fabric 14 based on the above. This first knitted fabric guide means adjusts the position of the knitted fabric so that the position of one edge of the knitted fabric 14 is between the pair of knitted fabric end sensors 80, and Guide to the needle stick position B1 of No. 1. Therefore, the first knitted fabric guide device functions as a knitted fabric end positioning means, that is, a knitted fabric end positioning mechanism for one edge of the knitted fabric 14. The detection area of the knitted fabric edge sensor 80 is designated by reference numeral 80 in FIG.
Indicated by a.

The second knitted fabric guide means detects the other end of the knitted fabric 14 on the upstream side of the second needle stick position B2, and a pair of knitted fabric end sensors 84 output signals. The position of the other edge of the knitted fabric 14 is based on
And a pair of rollers 86 that adjust the position of the knitted fabric so that the distance between the rollers 4 is 4. This second knitted fabric guide means
While adjusting the position of the other edge portion of, the stitches of the edge portion are guided to the second needle sticking position B2. Therefore, the second knitted fabric guide means acts as a knitted fabric end positioning means or a knitted fabric end positioning mechanism for the other edge of the knitted fabric 14.

The third knitted fabric guide means detects the end of the knitted fabric 12 on the upstream side of the third needle stick position B3, and a pair of knitted fabric end sensors 88 based on the output signals of both knitted fabric end sensors. And a roller 90 for adjusting the position of the edge of the knitted fabric 14.
The third knitted fabric guide means adjusts the position of the knitted fabric so that the position of the edge of the knitted fabric 12 to be sewn is between the knitted fabric end sensors 88, and the stitches of the edge of the knitted fabric are adjusted to the third position. Needle stick position B3
Guide to Therefore, the third knitted fabric guide device functions as a knitted fabric end positioning means, that is, a knitted fabric end positioning device for the knitted fabric 12.

In the linking device 10, the knitted fabric 14
Is bent into an L-shape by a guide 92 bent into an L-shape, and in that state, one edge is pierced by the first knitting fabric guide means with the rotation of the drums 28 and 30. While being guided to the position B1, the other edge is guided to the second needle sticking position B2 by the second knitted fabric guiding means.
The vertical wall portion of the guide 92 extends to the second needle stick position B2. As shown in FIG. 2, the horizontal wall portion of the guide 92 has a narrow width from the first needle stick position B1 and is located between the needle row of the needle 24 and the front surface of the drum 30,
It extends from the first needle stick position B1 in the circumferential direction of the drum 28 by at least half the circumference.

In the first knitting position B1, the knitted fabric 14 is pierced with the needle 24 of one needle row into the stitch of one edge portion, and at the second needle pricking position B2, the needle 26 of the other needle row.
After having been pierced through the stitch on the other edge, it is moved toward the third needle piercing position B3 together with the pierced needles 24 and 26. The needles 24 in one of the needle rows are pierced in the stitches on one edge of the knitted fabric 14, and then the third needle piercing position B3.
While it is being moved to the position immediately before, it passes through the inside of the guide 94 together with one edge of the knitted fabric 14.

The guide 94 is immovably attached to the cover 70 so as to be located above the tip of the needle 24 protruding at the first needle sticking position B1. The sensor 88 and the roller 90 of the third knitted fabric guiding means are arranged outside the cover 70.

The knitted fabric 12 has first and third needle stick positions B1 and B3 at the edges to be sewn by the third knitted fabric guiding means.
It is guided to the third needle stick position B3 while being overlapped with the outside of the guide 94 in the interval. The guide 94 ends immediately before the third needle stick position B3. Therefore, the knitted fabric 12
Is gradually overlapped with one edge of the knitted fabric 14 at the third needle stab position B3, and the needle 24 of the drum 28 is further protruded and stabbed in the stitch. This allows the drum 2
The needle 24 of No. 8 is pierced through the stitches of the knitted fabric 12 and the stitches of one edge of the knitted fabric 14.

Due to the further protrusion of the needle 24 at the third needle stick position B3, the tips of the needles 24 and 26 of the drums 28 and 30 are abutted against each other. Although not shown accurately in FIG. 1, the needle 24 moves radially outward of the drum 28 from immediately before the third needle stick position B3, as is apparent from the shape of the fixed guide 48 shown in FIG. Begin to. Then, at the third needle sticking position B3, the tip of the needle 24 projects from the outer surface of the guide 94, so that the knitted fabric 14
Pierced by. Furthermore, a complete protruding state is obtained immediately after passing through the third needle stick position B3. The guide 94
Has a slit whose one end is open in the circumferential direction of the drum 28 so as to allow the needle 24 to project and move in the projected state.

The knitted fabric 14 is gradually U-shaped while the stitch pierced by the needle 26 moves from the third needle piercing position B3 to the stitch transferring position C on the downstream side of the third needle piercing position B3. The edge portion that is bent and pierced with the needle 26 is displaced by the guide 96 toward the tip of the needle 24. As a result, the stitch pierced by the needle 26 is transferred to the needle 24 by the guide 98 at the transfer position C as the drums 28 and 30 rotate. The guide 96 extends in the direction in which the needles 106 of the needle moving mechanism 16 are arranged, that is, in the arrangement direction, and has an inclined surface that gradually extends from the rear end of the needle 26 toward the tip along the moving direction of the needle. ing.

The knitted fabric 14 is displaced to the rear end side of the needle 24 by the guide 98 as the drums 28 and 30 rotate, and the other edge portion is overlapped on the outer side of the knitted fabric 12, and in that state. It is moved to the suturing position D together with the ground 12. Guide 9
Reference numeral 8 has an inclined surface that extends in the direction in which the needles 24 are arranged on the drum 28 side and that extends from the front end to the rear end of the needles 24 along the moving direction of the needles. The inclined surface of the guide 98 is provided so as to be continuous with the inclined surface of the guide 96.

After the operation of the linking device 10 is started, the knitted fabrics 12 and 14 that have been overlapped are sewn by the sewing means, that is, the sewing device 22 from the time when the stitches to be sewn which have been correctly stabbed reach the sewing position D. And louver 10
2 and the sewing thread 104 are over stitched.
For this reason, the linking device 10 suspends the sewing operation of the knitted fabrics 12 and 14 that have been overlapped until the stitches that have been correctly stabbed to be sewn reach the stitching position D after the start of operation. In this embodiment, when the knitted fabric 14 is set,
The needle 24 at the first needle stick position B1 and 2 adjacent to the needle 24
Since the stitch to be sewn is punctured by the needle 24 of the book and the needle is correctly punctured, the suturing device 22 is operated when the stitch reaches the suturing position D. However, when set,
If only temporary needle pricking is performed, the suturing device 22 may be operated after the stitches stabbed by the linking device reach the suturing position D after the linking is started.

After that, the needle 24 passes the suturing position D as the drum 28 rotates, and then is gradually retracted.
The needle 26 is also retracted gradually from the appropriate position after passing the transfer position C as the drum 30 rotates. The sewn knitted fabrics 12 and 14 are attracted to the feed roller 72 side by the rotation of the drum 28 and the cooperative action of the feed roller 72 and the pressing roller 74, and the stitches are completely removed from the needle 24 at a position in the middle thereof. Removed.

The time when the actual stitching operation is started is when the first stitch to be sewn reaches the stitching position D. The arrival of the stitch to be sewn at the stitching position D is detected by an appropriate detector, for example, that the stitch 106 shown in FIG. 7A has reached the stitching position D as shown in FIG. 7B. Linking device 1 can be obtained by
It can be obtained by counting the number of needles 24 pierced after the start of operation of 0 and reaching a predetermined value.
Further, it can be obtained by detecting the movement amount of the needle row and reaching the predetermined value.

The pause of the sewing operation is a pause means for stopping the operation of the suturing device 22, a pause means for retracting the suturing device to a position where the sewing needle, that is, the sewing needle 100 does not reach the knitted fabrics 12 and 14, and a needle stick state. Stitching device 2
It can be performed by a resting means or the like which is detached from the needle before the second step. The start time of the sewing operation is when the first stitch to be sewn reaches the stitching position, when the number of needles pierced after the operation of the linking device reaches a predetermined value, and when the needle row moves by a predetermined amount. And so on.

When the sewing operation is started from the start of the operation of the linking device, for example, the range L in FIG. 7 (A) is unnecessarily sewn at the start of the operation of the linking device, resulting in deterioration of quality. The suture must be removed. However, according to the linking device 10 of the present invention, the stitching operation of the knitted fabrics 12 and 14 is not performed until the stitch to be sewn reaches the stitching position D. L is not sewn.

Referring to FIG. 8, the rest or rest means 110 includes a base 114 immovably supported by the frame 112 of the linking device and a linear guide 116 to which the base is attached. The suturing device 22 is
A support 118 of the sewing machine needle 100 is supported by a linear guide 116 on a base 114 so as to be capable of reciprocating, and a needle moving motor 120 is supported on the base 114 so as not to move. The sewing machine needle 100 is reciprocally moved in the longitudinal direction by a crank shaft 122 connected to a motor 120 and a crank arm 124.

In the suspending means 110, when the operation of the linking device is started, the supply of electric power to the motor 120 is stopped, so that the motor 120 is stopped in a state where the sewing machine needle 100 is retracted from the knitted fabrics 12 and 14. . When the stitch to be sewn reaches the needle stick position D, the supply of electric power to the motor 120 is started. As a result, the operation of the suturing device 22 is stopped, and thus the knitted fabrics 12 and 14 are not sewn until the stitch to be sewn reaches the needle puncturing position D.

Referring to FIG. 9, the pausing device or pausing means 130 further includes a base 114 and a frame 112.
And a hydraulic or pneumatic cylinder mechanism 134 for reciprocating the base 114 with respect to the frame 112.

In the suspending means 130, when the operation of the linking device is started, the base 114 is retracted from the cylinder mechanism 134 so that the sewing needle 100 is knitted into the knitted fabrics 12, 1.
The entire suturing device 22 is retracted to a position that does not reach 4. When the stitch to be sewn reaches the needle stick position D, the base 11
4 is returned to its original position by the cylinder mechanism 134, and the entire suturing device 22 is returned to its original position. As a result, even when the suturing device 22 is operating, the knitted fabrics 12 and 14 are not sewn until the stitch to be sewn reaches the needle puncturing position D.

The rest means may be arranged such that a clutch is provided between the rotary shaft of the motor 120 and the crankshaft 122, and transmission of the rotation of the motor 120 to the crankshaft 122 is interrupted by this clutch.

Referring to FIG. 10, the pause means 140 includes
It is arranged in front of the suturing device 22. This resting means 1
40 includes a hydraulic or pneumatic cylinder mechanism 142, which is immovably supported by the frame 112 of the linking device, and an L-shaped guide plate 144 attached to the rod of the cylinder mechanism.

In the resting means 140, the guide plate 144 is moved to the drum 28 side by the cylinder mechanism 142 at the start of the operation of the linking device, so that the knitted fabrics 12 and 14 in the needle piercing state are in front of the suture position D. 14
The knitted fabric 1 detached from the needle 24 by 4
2,14 sutures are blocked. When the stitch to be sewn reaches the stitching position D, the guide plate 144 is retracted by the cylinder mechanism 142 to the original position where the knitted fabrics 12 and 14 are not removed from the needle 24. As a result, even if the suturing device 22 is operating, the stitches to be sewn on the knitted fabrics 12 and 14 are at the needle stick position D.
Not sewn until it reaches.

When the stitch to be sewn reaches the sewn position D, a command signal is output from a control device (not shown) to release the non-operation of the sewn operation by the pausing means, whereby the sewing is started. It should be noted that it is desirable to be able to cope with a shortage of situations in which even if a command signal is output from the control device, the inactivation of the suturing operation by the pausing means is not actually released due to a mechanical failure of the pausing means. . That is, a sensor for confirming that the inoperative state has been released is provided, and the inactive state has not been released due to the output state of the detection signal from the sensor after a predetermined time has elapsed since the command signal was output. When judged,
Output an alarm and stop the linking device.

Specifically, the pausing means uses a clutch composed of a pair of clutch members provided on the rotating shaft of the clutch motor, and one of the clutch members is moved in the axial direction. When the rotation of the motor 120 is not transmitted to the crankshaft 122 by disengaging the clutch member, the fact that the pair of clutch members are fitted together indicates that the axial displacement of one clutch member is detected by the proximity switch. If the detection signal is output for the clutch member even if a predetermined time has elapsed after the command signal was output, the linking device is stopped. Further, when the pausing means retracts the base 114 to prevent the sewing machine needle 100 from reaching the knitted fabrics 12 and 14, it is possible to detect that the base 114 has advanced to the original position by the proximity sensor. If the detection signal of the base 114 is not detected within a predetermined time after the command signal is output, the linking device is stopped.

When the stitch that was first sewn reaches the stitch position D again and is sewn again, or when the stitch that is sewn first passes the stitch position D again and moves by a few stitches, Movement, knitting guide, and stitching operations stop. At this time, the sewing machine needle 100 is retracted to the suturing device 22 and retracted from the knitted fabric, or the entire sewing device 22 is retracted and the sewing machine needle 100 is retracted from the knitted fabric. After that, the sewing thread connected to the knitted fabric is cut between the knitted fabric and the sewing needle 100, and the knitted fabrics 12 and 14 are removed from the linking device 10.

When the knitted fabrics 12 and 14 are removed from the linking device 10, at the transfer position C, at least one of the needles 24 and 26 is retracted to form a gap between the tips of both needles or the guide 94 is used. The fabrics 12 and 14 can be easily removed by retreating from the fabric 24 or further raising the roller 82 to separate it from the fabric. In addition,
In order to cut the sewing thread, a cutter operated by an actuator is provided between the knitted fabric and the sewing thread, and the stitch stitched first reaches the stitching position D again or passes through the stitching position D again to perform the stitching operation. If the actuator is operated after stopping the operation, it can be automatically performed. The fact that the stitch stitched first reaches the stitch position D again or has passed the stitch position D can be detected by detecting the number of needle sticks and the movement amount of the needle and detecting that the detected value reaches a predetermined value. Good.

When the knitted fabric 12 enters the detection area of the guide means for the knitted fabric 14 in the vicinity of the first needle stab position B1 during the suturing as described above, the knitted fabric 14 in the vicinity of the first needle stab position B1. It is impossible for the sensor 80 to accurately detect the above condition. In such a case, the stitch to be needle-stitched of the knitted fabric 14 cannot be accurately guided to the first needle-stab position B1, and needle stitches are made on other stitches, resulting in incorrect stitching. For this reason, the knitted fabric guide means can
It is preferable to provide position regulating means such as a plate material that regulates the position of the knitted fabric 12 so as not to enter the detection area by the sensor 80 of the first knitted fabric guiding means in the vicinity of the first needle stick position B1.

When the knitted fabric 12 is a neckline of a body knitted fabric and the knitted fabric 14 is a knitted fabric having both ends connected to each other, both the knitted fabrics 12 and 14 are endless knitted fabrics. Become. In this case, the first and second during linking
When the number of stitches to be punctured at the needle puncturing positions B1 and B2 becomes small, the position regulating means is retracted from the knitted fabric, and the remaining stitches not punctured are manually punctured. This is because when the number of stitches to be pierced is reduced, the stitch stitched first is the feed roller 72, the pressing roller 74, and the pair of rollers 82.
Since it has been returned to the space between the positions, it is necessary to allow the position of the position regulation means to allow the stitched stitches to pass through.
However, if the position control means is retracted, the knitted fabric portion not yet sewn will enter the detection region 80a, and as a result, the state of the knitted fabric 14 cannot be accurately detected by the sensor 80. is there.

In order to facilitate the needle stick operation when the needle stick is performed by hand, a pair of rollers 82 and a pair of rollers 86,
Further, if necessary, the pair of knitted fabric edge sensors 80 and 84 may be retracted from the needle stick positions. Specifically, after moving the above members in the direction of separating them from the knitted fabric, the members may be horizontally moved in the direction of the pressing roller 74. As will be described later, even when the knitted fabric guiding means for the knitted fabric 14 is constituted by a hand, the hand may be similarly moved.

In the above embodiment, each knitted fabric guide means rotates to move the knitted fabric to a predetermined needle stick position, and
It has one or more rollers that move in the direction of the axis of rotation to move the knitted fabric in the direction perpendicular to the moving direction, but instead of the rollers, a force that moves the knitted fabric in the moving direction and the direction perpendicular to the moving direction. Other mechanisms, such as one or more hands that act on the knitted fabric, may be used.

In addition, each knitted fabric guide means captures the state of the knitted fabric in the vicinity of each needle stab position with a television camera, calculates the position information of the stitches based on the output by a common image processing device, and calculates the calculated position. The stitch may be guided to a predetermined needle stick position by one or more rollers or hands based on the information.

Further, each knitted fabric guiding means detects the end of the corresponding knitted fabric by one or more knitted fabric end sensors, and guides the corresponding knitted fabric by one or more rollers or hands based on the detection result. The position of the stitch is corrected by the television camera, the position information of the stitch is calculated by a common image processing device based on the output, and the stitch is corrected based on the calculated position information. It may be one which guides to a predetermined needle stick position by one or more rollers or hands.

The above linking device 10 includes the drum 28.
It can also be used as a device for sewing two annular or belt-shaped knitted fabrics by using only the needle row on the side of. In this case, one knitted fabric is pierced by the needle 24 on the drum 28 side at the first needle piercing position B1, and the other knitted fabric is pierced by the third needle.
The needle 24 on the drum 28 side is punctured at the needle puncturing position B3. Further, the needle stick function of the needle row on the drum 30 side is stopped.

The present invention is not limited to the linking device in which the two needle stick positions are set in the same needle row as in the above-described embodiment, but is also shown in FIG.
In the linking device disclosed in Japanese Patent No. 4351, a collar as an endless stitching portion of the body knitted fabric 12a is set in one needle row, and a non-endless band-shaped accessory knitted fabric 12b is set in the other needle row. The present invention can also be applied to the case of setting and performing single linking.

Referring to FIG. 11, the linking device 15
0 is used as a device for overlocking the two knitted fabrics 152 and 154. The knitted fabrics 152 and 154 are respectively arranged on the tables 158 and 160 supported by the frame 156, and are supplied at a predetermined speed in the directions (X direction) approaching each other.

The linking device 150 includes a pair of eye picking needle pricking devices or needle moving devices 162, 164 arranged on the frame 156 to pick up the stitches to be sewn together and pierce the point needle through the stitches.

Needle moving devices 162 and 164 are each an annular needle holder or drum 16 rotatably supported on a frame 156 about an axis extending horizontally.
6, a plurality of point needles 168 and 170 are arranged at intervals in the circumferential direction. Each point needle extends through the corresponding drum 166 in its radial direction. Each of the drums 166 is controlled by the control device 172 to be rotated in the arrow A direction in synchronization with each other, whereby the corresponding series of point hands are simultaneously rotated in the circumferential direction of the corresponding drum 166.

Inside each drum 166, the drum 166 is
As the needle rotates, a corresponding series of point needles 16
A cam-shaped guide, that is, a needle reciprocating cam 60, which sequentially engages with No. 8 and 170 to move the corresponding needles 168 and 170 in the axial direction of the drum 166 is arranged.

The needle reciprocating cam corresponding to the needle moving device 162 will be described.
The member is fixed to 56 and extends in the rotation direction of the drum 166. This needle reciprocating cam is used for the drum 16
6, the needle 168 extends from the needle stick position B to the suture position D along a circumference having a radius large enough to project the needle 168, and the radius size is set to gradually retract the needle 166 from the suture position D. Is gradually decreased, and then the needle is extended to the needle stick position B on the circumference of a radius of a size for retracting the needle.
The needle reciprocating cam corresponding to the needle moving device 164 has the same shape.

With the above-described needle reciprocating cam, each point needle pierces the stitch of the needle row on the needle moving device 164 side from the needle puncturing position B on which the needle is pierced into the stitch. Transfer position C for transferring the needle to the needle, the needle moving device 16
The needle reciprocating cam reciprocates in the radial direction of the corresponding drum while the needle reciprocating cam moves through the stitching position D where the two knitted fabrics on the No. 2 side are sewn together and is returned to the needle sticking position B.

Inside the drums 166, the corresponding needles 168 and 170 are also provided at the needle sticking position B.
A needle driving mechanism, that is, a needle driving device 174 for projecting outward in the radial direction of 6, is arranged. As a result, each point needle is pierced through the stitch at the needle puncturing position B, and in that state, the point needle is rotationally moved as the drum 166 rotates. The needle driving device 174 is also controlled by the control device 172.

Each needle 168 is maintained in a state of being projected or advanced outward in the radial direction of the drum 166 by the needle reciprocating cam 60 until it passes from the needle stick position B to the suture position D, and then the radius of the drum 166. It is gradually retracted inward. Also, each needle 170 is maintained in a state of protruding in the radial direction of the drum 166 by the needle reciprocating cam until it passes the position corresponding to the suture position D from the needle stick position B, and then in the radial direction of the drum 166. It is gradually retreated. Each of the needles 168, 170 is also
The needle reciprocating cam is released before the needle sticking position B, and is retracted until it is driven by the needle driving device 174 at the needle sticking position B.

The linking device 150 also includes a pair of knitted fabric guide means, that is, a knitted fabric guide device, for guiding the knitted fabric to correct the position of the stitch with respect to the point needle. Each knitted fabric guide device corresponds to each knitted fabric, and the position of the stitch is corrected by moving the corresponding knitted fabric to the needle stick position B and moving it in the direction perpendicular to the moving direction.

Each knitted fabric guide device includes a plurality of knitted fabric end sensors 176 for detecting the end of the knitted fabric, and a plurality of rollers 1 for guiding the knitted fabric based on the detection result of the sensor 176 and correcting its position.
78, a deflection sensor 180 for detecting the deflection of the knitted fabric corrected by the roller 178, one or more rollers 182 for correcting the deflection of the knitted fabric based on the detection result of the sensor 180, and the knitted fabric corrected by the roller 182. A television camera 184 for picking up an image of the ground condition, a common image processing device 186 for calculating position information of stitches based on the output image signal, a pair of parallel hands 188 arranged in front of the needle sticking position B, and needle sticking. A pair of pressing hands 19 for pressing the knitted fabric at the position B
With 0 and.

The plurality of rollers 178 are moved in the axial direction (Y direction) or the vertical direction (Z direction) while being rotated in the feed direction of the knitted fabric, so that coarse adjustment of the knitted fabric and thus the position of the stitch is performed. To do. Therefore, a plurality of rollers 178
Acts as a rough adjusting means, that is, a rough adjusting mechanism for the knitted fabric and eventually the stitches.

On the other hand, the roller 182 eliminates bending of the knitted fabric between the rollers 178 adjacent to each other in the moving direction (X direction) of the knitted fabric while being rotated in the feeding direction of the knitted fabric, and is suitable for the knitted fabric. By applying tension and further moving the knitted fabric in the direction perpendicular to the moving direction (axial direction of the roller) or in the up-and-down direction, fine adjustment of the knitted fabric and thus the position of the stitch is performed. For this reason, the roller 182 acts as a part of the fine adjustment means, that is, the fine adjustment mechanism, for the knitted fabric and further for the stitch.

The pair of parallel hands 188 are arranged at positions facing each other with respect to the movement path of the stitch to be sewn, and are moved in the X, Y and Z directions. That is, the pair of parallel hands 188 presses the knitted fabric and separates them from each other to expand the stitch, and moves in a predetermined direction while holding the knitted fabric to position the stitch. Therefore, the pair of parallel hands 188 also act as a fine adjustment means, that is, a part of the fine adjustment mechanism for the knitted fabric and thus the stitches.

The pair of pressing hands 190 are provided so as to be movable in the Z direction, and temporarily fix the stitches to be pierced on the slits 192 of the table 158 or 160 when the needle is pierced. Therefore, the pair of presser hands 1
90 also acts as part of the fine adjustment means or fine adjustment mechanism for the fabric and thus the stitches.

The television camera 184 projects the knitted fabric between the pair of parallel hands 188 and supplies the image signal to the image processing device 186. A light ray from a light source 194 arranged below the table 16 is directed to the slit 192 for the image pickup of the knitted fabric by the television camera 184.
The image processing device 186 detects or calculates the position of the stitch to be punctured based on the image signal supplied from the television camera 184, and supplies the information to the control device.

The controller 172 includes sensors 180 and 176.
The rollers 178 and 182 are controlled on the basis of the output signal of, and the rollers 182, the parallel hand 188 and the pressing hand 190 are controlled on the basis of the position information supplied from the image processing device 186.

In the linking device 150, the needles 168 and 170 that have been rotationally moved to the needle sticking position B are disengaged from the corresponding needle reciprocating cams and are lowered by their own weight (rotation axis of the drum 166). Has been retracted to the side). When the knitted fabrics 152 and 154 do not have endless stitches, the knitted fabrics 152 and 154 are
They are arranged on the tables 158 and 160, respectively, and are supplied toward the needle stick position B at a predetermined speed.

The needles 168 and 170 at the needle puncturing position B are pierced through the stitches while being moved outward in the radial direction of the drum 166 by the needle driving device 174 arranged at the corresponding needle puncturing position B. Each needle 168, 1 pierced through the stitch
The drum 70 is engaged with the corresponding needle reciprocating cam by rotating the drum 166 in the direction of arrow A. Knitted fabric 15
2 and 154 are arranged along the outer peripheral surface of the drum 166 with the rotation of the corresponding drum 166.
Moved in the same direction (downstream) with 68 and 170.

While the stitches of each knitted fabric are moved to the needle pricking position B, the positions of the respective knitted fabrics are roughly adjusted and finely adjusted by the knitting fabric guiding device, so that each knitted fabric is guided to the needle pricking position B. . As a result, the stitches to be sewn are sequentially guided to the needle sticking position B.

Each needle 168, 170 is gradually retracted by the needle reciprocating cam while being rotationally moved from the suture position D toward the needle puncturing position B, and is immediately removed from the needle reciprocating cam immediately before the needle puncturing position B, At the needle sticking position B, the needle driving device 174 moves or protrudes radially outward of the drum 166. As a result, the tip portions of the needles 168 and 170 are advanced to the outside of the drum 166 and pierced through the stitch moved to the needle puncturing position B.

Each needle 168, 170 pierced through the stitch
Is engaged with the corresponding needle reciprocating cam with the rotation of the corresponding drum 166, is maintained in the state of being pierced through the stitch, and is moved from the needle puncturing position B to the stitch transferring position C.

The needle 168 on the side of the needle moving device 162 and the needle 170 on the side of the needle moving device 164 are gradually moved from the needle puncturing position B toward the transfer position C while being pierced in the stitch. They are brought close to each other and are brought closest to each other at the transfer position C, and the tips are brought into contact with each other, that is, abutted. The knitted fabric 154 on the side of the transfer needle sticking device 164 has the needle moving device 1
It is gradually moved to the needle moving device 162 side by the guide means 196 arranged on the 64 side and is moved to the needle moving device 162 at the transfer position C. The guide means 196 is the knitted fabric 1.
54 and by extension, the stitches are gradually extended toward the needle moving device 162 side.

This transfer step is carried out by transferring the stitches of the needle 170 to the needle 168 at the transfer position C by the end portion of the guide means 196 as the drum 166 rotates. Knitted fabric 15 transferred to the needle 168
4 is the knitted fabric 15 which is arranged on the needle moving device 162 from the beginning.
Stacked on 2.

In the illustrated example, the guide means 196 causes the rear end of the needle 170 in the moving direction of the needle 170 so that the knitted fabric 154 moved toward the transfer position C is gradually moved to the front end side of the needle 170. It is a long plate-shaped member that extends from the part (base end side) toward the tip, but if it is similarly inclined,
Other members such as one or more rod-shaped members and one or more short members may be used. The guide member or guide means 196,
Instead of fixing to the frame 156, the needle 170 moved to the transfer position C is slightly reciprocated in the longitudinal direction by a drive mechanism (not shown) at each transfer to transfer the transferred knitted fabric 154. You may make it overlap with the knitted fabric 152.

Of the two knitted fabrics 152 and 154 piled up on the needle moving device 162, the stitch pierced by the same needle 168 is moved from the transfer position C to the stitching position D in that state, and the stitching position D is reached. Suture device 22 placed there at D
Sutured by. As a result, the two knitted fabrics 152, 1
54 are sewn together. The stitch to be actually stitched at the stitching position D is preferably the stitch pierced by the needle 168, but may be another stitch, for example, the stitch closest to the stitch punctured by the needle 168.

The suturing device 22 is controlled by the control device, and the sewing needle 100, the louver 102, and the sewing thread 104.
By this, the over stitches of the knitted fabrics 152 and 154 are sewn. The sewn knitted fabrics 152 and 154 are separated from the needle 168 by the pair of pull-down rollers 198 and sent to a predetermined position.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a linking device of the present invention.

FIG. 2 is a schematic plan view of the linking device of FIG. 1;

FIG. 3 is a schematic side view of the linking device of FIG.

4 is a front view of one needle moving cam portion in the linking device of FIG. 1. FIG.

5 is a cross-sectional view of a needle driving portion in the linking device of FIG.

FIG. 6 is a front view of the other needle moving cam portion in the linking device of FIG. 1.

FIG. 7 is a development view for explaining a set state of the knitted fabric, FIG. 7 (A) is a diagram showing a set state of the knitted fabric at the preparation stage of stitching, and FIG. 7 (B) is a knitted fabric in the middle of stitching. It is a figure which shows the set state of.

FIG. 8 is a diagram showing an example of a pause means.

FIG. 9 is a diagram showing another embodiment of the pause means.

FIG. 10 is a view showing still another embodiment of the pause means.

FIG. 11 is a schematic front view showing another embodiment of the linking device of the present invention.

[Explanation of symbols]

 10,150 Linking device 12,14,152,154 Knitted fabric 16,162,164 Needle movement mechanism 18 Knitted fabric guide device 22 Stitching device 24,26,168,170 Point needle 110,130,140 Resting means B1, B2 B3 Needle stick position C Transfer position D Suture position

Claims (4)

[Claims] 1. A plurality of needles are sequentially pierced through a plurality of knitted fabrics while moving in the direction of juxtaposition thereof, and then the needles are further moved together with the knitted fabrics, and the knitted fabrics are sewn by a stitching means at a stitching position. A linking device which can be combined and includes a pausing means for inactivating the sewing operation after the start of the operation of the linking device until the stitch to be sewn that has been properly punctured reaches the suture position. 2. The linking device according to claim 1, wherein the resting means includes means for stopping the operation of the suturing means. 3. The linking device according to claim 1, wherein the resting means includes means for retracting the sewing means to a position where the sewing needle does not reach the knitted fabric. 4. The linking device according to claim 1, wherein the resting means includes means for removing the knitted fabric in the needle stick state from the needle before the suturing means.