JPH05117921A - Automatic lap connection - Google Patents

Abstract

PURPOSE:To enable automatic lap connection with improved quality by loading a tension to the lap seal when the lap feed comes to almost end to cut it so that the cut end comes on the guide plate, then overlapping and pressing a new lap sheet on the end. CONSTITUTION:Lap sheet L from the bobbin is pressed to movable guide plate 21 and lap rollers 3, 4 are allowed to revolve reversely to cut the sheet, and the top end is held with pipe 23 under suction and sent to the waiting position. Then, the movable guide plate 21 is allowed to go around from the guide position to the lap sheet-cutting position, and the lap sheet end L from a new lap full bobbin F is allowed to fall with an air flow. As the falling lap sheet is held with the top end of the movable guide plate and pad 35, the lap roller is allowed to rotate reversely to cut the lap end, then the guide plate is moved to the guiding position, allowed to turn to the pipe-acting position to overlap the tail end of the lap sheet held by suction on the top end of the new lap sheet and to press them to the plate guide thereby completing automatic connection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically joining wraps in a textile machine, and more particularly, to a wrap sheet being fed when a wrap being fed by a textile machine such as a ribbon wrap machine approaches an empty space. The present invention relates to a method for automatically joining the tip of a wrap newly supplied from a full wrap to the end.

[0002]

2. Description of the Related Art In a textile machine for continuously processing wraps, it is necessary to splice the leading end of a newly supplied wrap sheet with the trailing end of the wrap sheet when the wrap being wound around the wrap bobbin is exhausted. Conventionally, the lap splicing work was performed manually, but the lap splicing work does not simply overlap the ends of two wrap sheets, but the quality of the lap splicing part is equivalent to the quality of the non-splicing part. Therefore, it requires skill to work. Further, generally, one processing machine is equipped with six processing units, and since the same work is sequentially performed for each processing unit at the time of lap joining, the work is time-consuming, so automation is desired.

As a method for automatically joining laps, Japanese Patent Laid-Open No. 1-1998
No. 292121 discloses a method shown in FIG. In this method, after the tip 72a of the lap sheet 72 of the full lap bobbin 71 placed on the pair of lap rollers 70 (only one side is shown) is sucked and held by the tubular body 74 having the suction port 73 on its peripheral surface. , The tubular body 74 such that the leading end 72a of the wrap sheet 72 overlaps the trailing end 76a of the leading wrap sheet 76 on the plate 75.
Is moved from the vicinity of the full lap bobbin 71 to the rear end position of the lap sheet 76 as indicated by an arrow A. Next, after releasing the holding of the tip 72a by the tubular body 74, the arrow B
The tubular body 74 is moved as shown in FIG.
It is lowered onto the lap sheet 72 upstream of the rear end 76a. Next, the tubular body 74 is moved so as to stroke at least the overlapped portions of the two wrap sheets 72 and 76 as indicated by an arrow C, and the lap joining is completed.

[0004]

However, even when the position of the leading edge of the wrap sheet is constant when the full wrap is carried out from the full wrap generation process, the process of conveying from the generation process to the target position replenishment position is When the full lap is placed on the lap roller due to the change of the leading end position of the lap sheet, the length from the contact point between the front lap roller and the full lap bobbin to the leading end of the lap sheet is not constant. Further, in the lap joining method disclosed in the above-mentioned JP-A-1-292121, the end portions of the two lap sheets are not corrected without correcting the variation in the leading end position of the lap sheets placed on the lap rollers. Are overlaid. Therefore, the length of the spliced portion changes in accordance with the variation in the leading end position of the lap sheet. If the length of the overlapping part of the wrap sheet is short, the quality of the seaming part will not hinder the use in the next process, but if the length of the overlapping part is long, the quality of the seaming part will not. It interferes with the use in the next process. Therefore, the part cannot be used in the next step, and is returned to the previous step and mixed with the raw cotton for reuse.

Conventionally, the length of the overlapping portion is set to be long in consideration of the safety (certainty) of the lap joining, so that the joining portion is in a state of hindering the use in the next process. It is returned to the process and mixed with raw cotton for reuse. In addition, since the lap sheets after the lap splicing are simultaneously performed in the plurality of processing units are overlapped with each other by shifting the width of the units, there is a problem that a lap having a considerable length cannot be used in the next process.

The present invention has been made in view of the above problems, and an object thereof is to make the quality of a spliced portion in a state where it does not hinder the use in the next step, and further, to wrap it. An object of the present invention is to provide an automatic lap piecing method capable of reliably piecing.

[0007]

In order to achieve the above object, according to the invention of claim 1, a wrap is drafted in front of a wrap roller of a textile machine having a plurality of processing units for sequentially supplying and processing the wrap. A movable guide plate is rotatably arranged between the guide position for guiding the rollers and the lap sheet cutting action position extending downward, and when the lap bobbin being supplied approaches the air, the machine base is stopped and the lap bobbin is Tension is applied to the wrap sheet being fed to cut it at a predetermined position where its rear end is on the movable guide plate, and then the rear end of the lap sheet after cutting is suction-held with a pipe having a suction port to the draft roller side. The movable guide plate is moved to the standby position, the lap bobbin is discharged from above the lap roller, and the full lap bobbin is supplied onto the lap roller. Of the lap sheet from the guide position to the wrap sheet cutting action position, the tip of the lap sheet of the full lap bobbin is blown off onto the movable guide plate by the air flow, and the dropped lap sheet is moved at a predetermined position. After rotating the wrap roller in the state of being grasped by the pressing member and the wrap sheet, and moving the movable guide plate to the guide position,
The rear end of the wrap sheet suction-held by the pipe is superposed on the tip of the newly supplied wrap sheet, and at least a part of the overlapping portion of both wrap sheets is pressed by the movable guide plate and the pipe. ..

According to the second aspect of the present invention, a guide position for guiding the wrap to the draft roller and a downward direction are provided in front of the lap roller of the textile machine provided with a plurality of processing units for sequentially supplying and processing the wrap. A movable guide plate is rotatably disposed at the extending lap sheet cutting operation position, and a pipe having a suction port presses the lap sheet on the movable guide plate against the movable guide plate at a position close to the wrap roller. The lap sheet on the movable guide plate is provided diagonally forward from the operating position so that it can roll between the draft roller side standby machine position where it cannot engage, and the machine base is stopped when the lap bobbin being supplied approaches the sky. In the state where the lap sheet being fed that is connected to the lap bobbin by arranging the pipe in the working position is pressed against the movable guide plate, After the wrap sheet is cut by reversing the up roller, the pipe is rolled to the draft roller side standby position while the rear end of the wrap sheet after cutting is suction-held in the suction port of the pipe, and the lap bobbin is rotated. While ejecting from above and supplying a full wrap bobbin onto the lap roller, and then arranging the movable guide plate from the guide position to the lap sheet cutting action position, the lap sheet tip of the full lap bobbin is moved to the movable guide. The wrap sheet is blown off onto the plate by the air flow, and the wrap sheet is cut by rotating the wrap roller in the state where the dropped lap sheet is held by the movable guide plate and the pressing member at a predetermined position, and the tip of the wrap sheet is set to the working position of the pipe. It was placed at the corresponding position and the movable guide plate was moved to the guide position. , Rolling the pipe from the standby position to the working position and stopping the suction action, superposing the rear end of the lap sheet that has been suction-held on the front end of the newly supplied wrap sheet, and stacking both wrap sheets. The part is pressed against the movable guide plate.

Further, at least one of a position corresponding to the pipe arranged at the working position of the movable guide plate and the peripheral surface of the pipe, a position corresponding to the pressing member of the movable guide plate and at least a pressing surface of the pressing member. Concavities and convexities may be provided on one side.

[0010]

According to the first aspect of the invention, when the lap bobbin being supplied approaches the air, the machine stand is stopped, and tension is applied to the lap sheet being supplied connected to the lap bobbin so that the rear end of the movable guide plate is movable. It is cut at the upper predetermined position. The cut portion of the wrap sheet has a spindle shape in which the amount of fibers is smaller toward the tip, and the amount of fibers is smaller than in other parts. The rear end of the cut wrap sheet is sucked and held by a pipe having a suction port, and is moved to the draft roller side standby position together with the pipe. On the other hand, the lap bobbin is discharged from the lap roller and the full lap bobbin is supplied to the lap roller. Next, the movable guide plate is pivotally arranged from the guide position to the retracted position below, and in this state, the tip of the lap sheet of the full lap bobbin is blown off onto the movable guide plate by the air flow. The dropped wrap sheet is gripped by the movable guide plate and the pressing member at a predetermined position, and in this state, the wrap roller is reversed and the wrap sheet is cut at the predetermined position. In this case as well, the cut portion of the wrap sheet has a spindle shape in which the amount of fibers is smaller toward the tip, and the amount of fibers is smaller than in other parts. Next, after the movable guide plate is moved to the guide position, the rear end of the wrap sheet suction-held by the pipe is superposed on the tip of the newly supplied wrap sheet. Then, at least a part of the overlapping portion of both wrap sheets is pressed by the movable guide plate and the pipe. Since the cut parts of both wrap sheets have less fibers than other parts, feed wrap tips that are automatically spliced simultaneously are cut simultaneously on the lap roller, and the wrap sheet tip position is controlled by independent rotation of the wrap rollers to join the wrap sheets. Since the lengths are adjusted to an appropriate constant length, the quality of the spliced portion formed by superimposing the portions is in a state that does not hinder the use in the next step.

In the invention described in claim 2, the basic operation is the same as that of the invention described in claim 1, but the pipe having the suction port makes the lap sheet on the movable guide plate close to the lap roller. It is provided so as to be rollable between an operating position where the guide plate is pressed at a position and a draft roller side standby position where the lap sheet on the movable guide plate cannot engage with the operating position obliquely forward from the operating position. Then, the wrap roller is reversed in the state where the pipe is placed in the working position to cut the wrap sheet being fed, and the pipe sucks and holds the rear end of the wrap sheet after cutting with the suction port to wind the wrap sheet. While taking it, it rolls to the standby position on the draft roller side. After that, the wrap sheet of the full wrap bobbin is cut at a predetermined position as described above, the tip of the wrap sheet is arranged at a position corresponding to the working position of the pipe, and the movable guide plate is moved to the guide position. And
When the pipe rolls from the standby position to the working position to stop the suction action, the trailing end of the wrap sheet being fed is superposed on the leading end of the wrap sheet connected to the full wrap bobbin, and the overlapped portion of the wrap sheet is overlapped. Is pressed against the movable guide plate by the pipe.

At least one of a position corresponding to the pipe arranged at the operating position of the movable guide plate and the peripheral surface of the pipe, and a position corresponding to the pressing member of the movable guide plate and at least one of the pressing surface of the pressing member. If unevenness is provided on the wrap sheet, the cut portion of the wrap sheet will be in a carded state and the amount of fiber will surely be smaller than other parts, and even if both ends of the wrap sheet are polymerized and spliced, The quality is surely in a state where it does not hinder the use in the next process.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a lap joint of a ribbon wrap machine will be described below with reference to FIGS.

First, an apparatus for carrying out the present invention will be described. As shown in FIGS. 1 to 3, the lap joining device is arranged between the draft rollers 1 and 2 and the wrap rollers 3 and 4 of the ribbon wrap machine. The machine frame is not shown. As shown in FIG. 2, a belt transmission mechanism 5 is provided between the shaft 1a of the draft roller 1 and the drive shaft of the main motor M1. Wrap roller 3,
The sprocket wheels 10 and 11 can rotate integrally with the rotating shaft 9 via the electromagnetic clutches MC1 and MC2 on the rotating shaft 9 to which the gear 8 that meshes with the gears 6 and 7 that are fixed to the shafts 3a and 4a of the No. 4 are fixed. Is attached to. A chain 13 is wound between one sprocket wheel 10 and a sprocket wheel 12 fixed to the shaft 1a of the draft roller 1. A chain 15 is wound around the other sprocket wheel 11 and a sprocket wheel 14 fixed to the drive shaft of a lap roller motor M2 capable of forward and reverse rotation driving. When the machine is in operation, the electromagnetic clutch MC1 is excited and the chain 13
The rotation of the sprocket wheel 10 rotating with the sprocket wheel 12 is transmitted to the rotating shaft 9 via
The wrap rollers 3 and 4 are driven in synchronization with the draft rollers 1 and 2. Also, the electromagnetic clutch MC1 is used when the lap is connected.
Is demagnetized and the electromagnetic clutch MC2 is excited,
Sprocket wheel 1 by lap roller motor M2
The rotation of the sprocket wheel 11 which is rotated via the chain 4 and the chain 15 is transmitted to the rotary shaft 9 to drive the lap rollers 3 and 4.

At both ends of the shaft 4a of the wrap roller 4, levers 16a constituting a bobbin discharge mechanism for discharging the lap bobbin B placed on the lap rollers 3 and 4 and approaching the sky,
16b is rotatably supported via a bearing (not shown), and all the units are common between the levers 16a and 16b (hereinafter, unless otherwise specified, all parts are common to all units). The bar 17 is fixed. One lever 16a is connected to the piston rod 18a of the air cylinder 18 at the base end. And the bar 1
7 is a standby position that extends horizontally below the lap bobbin B placed on the lap rollers 3 and 4 when the piston rod 18a is arranged in the projecting position, and when the piston rod 18a is arranged in the retracted position. The lap bobbins B are ejected at respective bobbin ejection positions.

A guide plate 19 is horizontally fixed between the draft rollers 1, 2 and the wrap roller 3 at a predetermined position near the draft rollers 1, 2. Between the wrap roller 3 and the guide plate 19, a movable guide plate 21 is rotatably supported at its base end with respect to a support shaft 20 provided near the wrap roller 3. An air cylinder 22 is provided below the movable guide plate 21, and the movable guide plate 21 is pin-connected to a piston rod 22a of the air cylinder 22 via a connecting piece 21a fixed to the lower surface thereof. The movable guide plate 21 moves downward to a guide position for guiding the lap sheet L to the draft rollers 1 and 2 when the piston rod 22a is arranged at the projecting position, and downward when the piston rod 22a is arranged at the retracted position. The wrap sheets are arranged at the cutting action positions.

A lap sheet L is provided in front of the wrap roller 3.
Pipe 23 in which a slit-shaped suction port 23a having a length substantially equal to the width of the
However, the movable guide plate 21 disposed at the guide position and the operation position where the lap sheet L is pressed against the movable guide plate 21 at the base end portion of the movable guide plate 21.
Is provided rotatably between the draft roller side standby position where the lap sheet L above the leading edge of the sheet can not be engaged. That is, one end of each of the front sides of the wrap roller 3 is fixed to a support bracket 24 disposed near the wrap roller 3, and the other end side is wound around a guide pulley 25 and fixed to the draft rollers 1 and 2. A pair of chains 28 are stretched so as to extend obliquely upward while being hooked on the hooks 26 via springs 27. Sprocket wheels 29 meshing with the chain 28 are fixed to both ends of the pipe 23 so as to be integrally rotatable. Further, one end of the pipe 23 has a base 30a whose base end is fixed to a predetermined position of the frame as shown in FIGS.
It is rotatably connected to the tip of a lever 30 which is rotatably supported by a bearing (not shown). Lever 30
Is pin-connected to a piston rod 32a of an air cylinder 32 via a bracket 31 fixed to the middle portion thereof. Then, the lever 3 is operated by the operation of the air cylinder 32.
The pipe 23 is adapted to roll along the chain 28 via 0. A flexible hose 23b connected to a suction means (not shown) is provided at one end of the pipe 23.
Are connected.

A rotary shaft 33 is arranged below the guide plate 19 in parallel with the lap roller 3. A plurality of support brackets 34 are integrally rotatably fixed to the rotary shaft 33 at their base ends, and a rubber rod-shaped pad member 35 as a pressing member is horizontally fixed to the tip of the support bracket 34. One end of a drive lever 36 is integrally rotatably fixed to the rotary shaft 33, and the other end of the drive lever 36 is pin-connected to a piston rod 37a of an air cylinder 37 arranged at a predetermined position. Then, the rotation shaft 33 is rotated by the operation of the air cylinder 37, and the pad member 3
A lap sheet cutting action position where the wrap sheet L can be pressed and held in cooperation with the tip of the movable guide plate 21 when the wrap sheet 5 is placed in the wrap sheet cutting action position, and a standby position where the movable guide plate 21 cannot be engaged. It is designed to be moved to.

A bobbin pressing mechanism 38 is arranged between the lap rollers 3 and 4 at a position corresponding to the mounting position of the lap bobbin B for each unit. In the bobbin pressing mechanism 38, as shown in FIG. 4, a pair of support plates 39 are vertically fixed at intervals substantially equal to the length of the lap bobbin B, and a pair of upper and lower guide pins 40 and 41 are provided on the support plate 39.
Is projected. The support plate 39 has elongated holes 42a and 42b.
The pair of pressing levers 42 formed with
42b are movably supported while engaging with the guide pins 40 and 41, respectively. A roller 43 is attached to the tip of the pressing lever 42 so that a shaft (not shown) extends in the axial direction of the wrap roller 3. An air cylinder 44 is fixed on the lower side between the support plates 39, and a lever 45 is fixed to the piston rod 44a of the air cylinder 44 at the center so as to be horizontal. The lower ends of the pressing levers 42 are connected to both ends of the lever 45, respectively. The two pressing levers 42 are moved to the standby position where the rollers 43 are located on the side of the lap bobbin B when the piston rod 44a is arranged at the projecting position.
When the rollers are arranged at the retracted position, both rollers 43 are arranged at the pressing positions for engaging the lower inner peripheral surface of the lap bobbin B and pressing the lap bobbin B against the lap rollers 3 and 4. There is. The levers 16a and 16b of the bobbin discharging mechanism are formed to have a length that does not engage the pressing lever 42 and the roller 43 when the bar 17 is rotated to the bobbin discharging position.

Above the movable guide plate 21, an air nozzle 46 for injecting compressed air to blow off the leading end of the lap sheet L of the full lap bobbin F placed on the lap rollers 3 and 4 is arranged. .. Further, at a position corresponding to the lower end of the movable guide plate 21 arranged at the wrap sheet cutting operation position, a storage portion 47 for storing the cut edge Lc of the cut wrap sheet L is provided. The wall surface of the accommodating portion 47 is extended to the vicinity of the leading end of the movable guide plate 21 arranged at the wrap sheet cutting action position, and a detection sensor PH for detecting the presence or absence of the wrap sheet L hanging from the leading end of the movable guide plate 21 at the upper end thereof. Is provided for each unit.

Next, a lap joining method using the apparatus configured as described above will be described. In the spinning operation of the machine stand, the movable guide plate 21 is at the guide position, the bar 17, the pipe 23,
The pad member 35 and the pressing lever 42 are arranged at the standby positions, respectively. When the spinning progresses and the lap bobbin B on the lap rollers 3 and 4 approaches the sky, the drive of the main motor M1 is stopped and the operation of the machine base is stopped. Next, the air cylinder 32 is actuated, the piston rod 32a is projected, and the pipe 23 is arranged from the standby position shown by the chain line in FIG. 5 (a) to the cutting action position shown by the solid line. As a result, the lap sheet L being fed on the movable guide plate 21 is being fed.
Is held by the pipe 23 against the movable guide plate 21. Next, the air cylinder 44 of the bobbin pressing mechanism is operated to pull in the piston rod, and the pressing lever 42 moves the lap bobbin B via the roller 43 to the lap rollers 3, 4
It is arranged at a pressing position for pressing. Next, the electromagnetic clutch M
C2 is excited, and the lap motor M2 is driven in the direction in which the lap rollers 3 and 4 rotate in the reverse direction. As a result, the lap bobbin B is rotated in the direction in which the lap sheet L is wound, and the lap sheet L is pressed by the pipe 23 at the pressing position P1.
And the contact position P2 of the lap bobbin B and the lap roller 3
The movable guide plate 2 has a rear end that receives tension between
It is cut at a predetermined position above 1. The wrap sheet L is cut into a spindle shape having a smaller amount of fibers as it approaches the leading end, and the cut portion has a smaller amount of fibers than other portions.

In order to cut the lap sheet L at a predetermined position and with the cut ends aligned, the gap between the pressing position P1 and the contact position P2 becomes a problem. When the wrap sheet L is free between the draft rollers 1 and 2 and the wrap rollers 3 and 4 as in the conventional case, that is, when the distance between gripping positions of the wrap sheet L is about 600 mm and the wrap rollers 3 and 4 are reversed, cutting is performed. The positions of the parts vary and the cut ends also become zigzag. However, by setting the distance of the grip position of the lap sheet L, that is, the distance between the pressing position P1 and the contact position P2 to be approximately 300 mm or less, preferably 260 mm or less, the wrap sheet L is cut at a position separated from the pressing position P1 by a predetermined distance. Cut with the edges aligned.

In addition, when unevenness is provided at a position corresponding to the pipe 23 arranged at the cutting action position of the movable guide plate 21 or at least one of the peripheral surface of the pipe 23, the cut portion of the lap sheet L approaches the leading end. The fiber is cut into a spindle shape with less fiber.

Next, the drive of the lap motor M2 is stopped. Further, the air cylinder 44 is actuated, the pressing lever 42 is moved upward, and the roller 43 is returned to the standby position on the side of the lap bobbin B (FIG. 5B). On the other hand, the suction means operates to generate a suction airflow toward the slit 23a of the pipe 23, and the rear end of the wrap sheet L is suction-held by the pipe 23. Next, the air cylinder 32 operates and the piston rod 32a is pulled in. As a result, the pipe 23 is guided by the chain 28, and the lap sheet L is transferred to the pipe 23.
While rolling around the peripheral surface of the sheet, it rolls to the sheet winding retracted position as the standby position, and the state shown in FIG. or,
While the pipe 23 is moving, the air cylinder 18 is actuated and its piston rod 18a is pulled in, and the bar 17 is rotated together with the levers 16a and 16b from the standby position shown by the chain line in FIG. 5 (c) to the bobbin discharge position shown by the solid line. Be moved.
The wrap bobbin B rolls rearward along the wrap roller 4 as the bar 17 rotates, and falls and is discharged onto the carry-out conveyor 48 disposed below and behind the lap roller 4.

Next, as shown in FIG. 6 (a), a guide plate 49 for guiding the full wrap bobbin F from a conveyor (not shown) attached to the ribbon wrap machine is arranged behind the lap roller 4 of each unit. Full lap bobbin F
Is placed on the lap rollers 3 and 4 via the guide plate 49. The full wrap bobbin F is placed on the lap rollers 3 and 4 with the leading end (rolling tail) of the lap sheet L positioned above the movable guide plate 21. Next, the air cylinder 22 is actuated, the piston rod 22a is drawn in, the movable guide plate 21 is rotated downward, and the movable guide plate 21 is arranged from the guide position to the lap sheet cutting action position shown by the solid line in FIG. 6 (a). Next, compressed air is jetted from the air nozzle 46 arranged above the movable guide plate 21,
The tip of the lap sheet L is brushed off onto the movable guide plate 21.

When all the detection sensors PH do not detect that the leading edge of each wrapped lap sheet L hangs down from the leading edge of the movable guide plate 21 even after a lapse of a predetermined time after the injection of the compressed air from the air nozzle 46 is stopped. Is the lap roller motor M in the direction in which the lap rollers 3 and 4 rotate in the forward direction.
2 is driven, and the lap sheet L is sent out from the full wrap bobbin F. Then, when all the detection sensors PH detect that the leading end of each lap sheet L hangs down from the leading end of the movable guide plate 21, the lap roller motor M2.
Is stopped. After that, the air cylinder 37 is operated and the piston rod 37a is pulled in, and the pad member 35 is arranged at the lap sheet cutting action position. Further, when all the detection sensors PH detect the tip of the lap sheet L when the tip of the lap sheet L is wiped off onto the movable guide plate 21, the air cylinder 37 is immediately driven without driving the lap roller motor M2. Is operated, and the pad member 35 is arranged at the wrap sheet cutting action position as described above. This allows the pad member 35 to move to the movable guide plate 2
The lap sheet L is pressed and gripped in cooperation with the leading edge of the sheet No. 1 (FIG. 6B).

Next, the lap roller motor M2 is driven in the reverse direction of the lap rollers 3 and 4, and the cut ends of the lap sheet L are aligned at a predetermined position on the lap roller 3 side, which is a predetermined distance away from the grip position by the pad member 35. Will be disconnected. Also in this case, the wrap sheet L is cut so that the wrap sheet L has a smaller amount of fibers as it approaches the leading end, and the cut portion has a smaller amount of fibers than other portions. And the wrap sheet L
The drive of the lap roller motor M2 is stopped and the excitation of the electromagnetic clutch MC2 is released at the time when the tip of the wrap moves to a predetermined position suitable for lap joining. Further, the air cylinder 37 is actuated, the piston rod 37a is projected, the pad member 35 returns to the standby position, and the cut end Lc falls into the accommodating portion 47, resulting in the state of FIG. 7 (a).

When the full lap bobbin F is placed on the lap rollers 3 and 4, the position of the leading end of the lap sheet L varies, but after the lap sheet L is dropped onto the movable guide plate 21, the lap roller 3 predeterminedly wraps it. At the distance position, the cutting position is constant because tension is applied and cutting is performed while being gripped. The distance between the pressing position of the lap sheet L by the wrap roller 3 and the pressing position of the pad member 35 is approximately 300 mm or less, preferably 260 mm or less, so that the lap sheet L is at a position apart from the pressing position by the pad member 35 by a predetermined distance. It is cut with the cutting edges aligned. When the tip of the movable guide plate 21 or at least one of the pad members 35 is provided with irregularities, the wrap sheet L is surely cut so that the wrap sheet L has a spindle shape with a smaller amount of fibers as the cutting portion approaches the tip.

Next, the air cylinder 22 is actuated, the piston rod 22a is projected, and the movable guide plate 21 is returned to the guide position shown by the solid line in FIG. 7 (b). Next, the air cylinder 32 is actuated, the piston rod 32a is projected, and the pipe 23 rolls along the chain 28 from the wrap sheet winding retracted position shown by the chain line in FIG. 8 (a) to the lap joint working position shown by the solid line. To do. As a result, the wrap sheet L wound around the pipe 23 is unwound and extended onto the movable guide plate 21, and the rear end having a small amount of fibers is superposed on the front end of the newly supplied wrap sheet L. The overlapping portion of both wrap sheets L is pipe 23.
By this, the movable guide plate 21 is pressed and joined by pressure bonding. The length of the polymerized portion is preferably 50 to 60 mm.

Next, the electromagnetic clutch MC1 is excited and the air cylinder 32 is operated to operate the piston rod 3
2a is pulled in, and after the pressing force of the pipe 23 against the lap sheet L is relaxed (the state of FIG. 8B), the main motor M1 is driven to start the operation of the machine base, and the draft rollers 1, 2 and the lap. The rollers 3 and 4 are driven in synchronization. Further, the pipe 23 returns to the standby position shown by the solid line in FIG. 9 and the series of lap joining operations is completed.

The cut portions of the wrap sheet L being supplied and the newly supplied wrap sheet L both have a spindle shape in which the amount of fiber is smaller toward the tip, and the amount of fiber is smaller than that of the other part, so both are polymerized. The quality of the spliced part is different from that of the conventional automatic splicing method, and is in a state where it does not hinder the use in the next process. In addition, since the wrap sheet L is always cut at a predetermined location in all units, the amount of fibers in the overlapped portion is equal to that of the other portion when the cut end portion of the wrap sheet L is being fed or newly fed. Therefore, it is possible to surely bond them.

(Embodiment 2) Next, another example of means for guiding the pipe 23 to roll between the standby position and the working position is shown in FIG.
It will be described according to 0. The pipe 23 is rotatably supported at the tips of a pair of levers 30 which are rotated in the same configuration as the above-described embodiment, via bearings (not shown). One end of a lever 50 is rotatably supported on a support shaft 25a of the guide pulley 25. Then, the chain 28, one end of which is connected to the other end of the lever 50, is wound around the sprocket wheel 29 and the guide pulley 25, which are fixed so as to be integrally rotatable with the pipe 23, and the weight 51 is hung at the other end. ..

In the structure of this embodiment, the sprocket wheel 29 is constantly urged by the chain 28 to rotate clockwise in FIG. When the pipe 23 moves in the direction away from the guide pulley 25 with the rotation of the lever 30, the sprocket wheel 29 meshes with the chain 28 while rotating in the direction for lifting the weight, that is, the counterclockwise direction in FIG. Move while doing. Also, pipe 2
When 3 moves toward the guide pulley 25,
The weight 51 moves while meshing with the chain 28 while rotating in the descending direction, that is, the clockwise direction in FIG. Therefore, in the configuration of this embodiment, the wrap roller 3 and the pipe 2 are
Since there is no mechanism for moving the pipe 23 between the above and 3, the maintenance work is facilitated.

The present invention is not limited to the above-mentioned embodiment, and for example, as a means for guiding the pipe 23 to roll between the standby position and the working position, the chain 28 is used.
A rack and a pinion may be used instead of the sprocket wheel 29, or the shaft 3a of the lap roller 3 may be used as the support shaft 20 of the movable guide plate 21. Further, as the structure of the bobbin pressing mechanism 38, a structure may be adopted in which a pair of upper and lower guide pins 40 and 41 are projectingly provided on the pressing lever 42 side and elongated holes 42a and 42b are formed on the supporting plate 39 side.

Further, when cutting the leading end of the newly supplied wrap sheet L, the lap sheet L may be gripped by the pad member 35 at the intermediate portion of the movable guide plate 21. Further, as a method of arranging the trailing end of the wrap sheet L being fed after cutting at a position that does not hinder the cutting work of the newly fed wrap sheet L, a pipe in which the trailing end is sucked and held without being wound around the pipe 23 May be simply moved to the standby position.

Further, in the above embodiment, the lap joining is performed all at once, but the constituent units may be divided into two sets and the lap joining times may be shifted to perform the lap joining for each set. In this case, the wrap rollers 3, 4, the bar 17,
The movable guide plate 21 and the pad member 35 are configured to be independently drivable for each set. Since the wrap sheet wound around the lap bobbin B in the previous step has slightly different properties (compressed state) between the inner side and the outer side, it is desirable to mix parts having different properties and supply them in a homogeneous state to the next step. By dividing the constituent unit into two sets and shifting the lap joining time, the lap supplied to the next process becomes uniform.

Further, instead of providing the detection sensor PH, the lap roller 3 and the full lap bobbin F are considered in consideration of the variation in the leading end position of the lap sheet L when the full lap bobbin F is placed on the lap rollers 3 and 4. When the tip of the wrap sheet L falls onto the movable guide plate 21 with the minimum length from the contact point to the tip of the lap sheet L, the wrap sheet L is located at a predetermined position on the lap roller 3 side from the tip position.
May be grasped by the pad member 35.

[0038]

As described above in detail, according to the present invention, when the wrap sheet is being fed and when the wrap sheet is newly fed, the edges of the wrap sheet are aligned at the predetermined positions, and the fiber amount of the cut portion is the same. After being cut into less than other parts, the ends of both wrap sheets are polymerized and pressure-bonded,
The lap joint is reliably performed in a state where the quality of the joint portion does not hinder the use in the next process. Therefore, unlike the case of the conventional automatic splicing method, it is not necessary to mix it with the raw cotton and reuse it without using the wrap joint and the wrap between the lap joints. It is possible to significantly reduce the time and effort required and waste of energy.

[Brief description of drawings]

FIG. 1 is a view showing an apparatus for performing automatic lap joining according to the present invention.
It is a schematic sectional drawing in the AA line of FIG.

FIG. 2 is a schematic plan view with a part omitted.

3 is a schematic cross-sectional view taken along the line BB of FIG.

FIG. 4 is a front view of a bobbin pressing mechanism.

FIG. 5 is a schematic diagram illustrating an operation from cutting of the wrap sheet being fed to discharging of the lap bobbin.

FIG. 6 is a schematic view illustrating an intermediate step for cutting the leading end of a newly supplied wrap sheet.

FIG. 7 is a schematic diagram illustrating a cutting state of a tip of a newly supplied wrap sheet and a state after cutting.

FIG. 8 is a schematic view illustrating a process of joining both wrap sheets.

FIG. 9 is a schematic view showing a state where joining of both wrap sheets is completed.

FIG. 10 is a partial schematic side view showing a modified example of the means for moving the pipe.

FIG. 11 is a schematic view illustrating a conventional lap joining method.

[Explanation of symbols]

1, 2 ... Draft roller, 3, 4 ... Wrap roller, 21
... Movable guide plate, 23 ... Pipe, 23a ... Slit as suction port, 35 ... Pad member as pressing member, B ... Wrap bobbin, F ... Full wrap bobbin, L ... Wrap sheet, M1 ... Main motor, M2 ... Wrap Roller motor.

(72) Inventor Masateru Fukunaga Masateru Oguchi-cho, Aichi Prefecture, Oguchi-cho, Nishinoura 140, Tono Co., Ltd. (72) Inventor Minoru Mizuno 140, Nishinoura, Oguchi-cho, Niwa-gun, Aichi Prefecture Hisa Corporation

Claims (3)

[Claims] 1. A guide position for guiding a wrap to a draft roller in front of a wrap roller of a textile machine equipped with a plurality of processing units for sequentially supplying wraps and a lap sheet cutting action position extending downward. A movable guide plate is provided so that it can be moved dynamically, and the machine base is stopped when the lap bobbin being supplied approaches the sky, and tension is applied to the lap sheet being supplied that is connected to the lap bobbin so that the rear end is on the movable guide plate. After cutting at a predetermined position, the rear end of the cut wrap sheet is suction-held with a pipe having a suction port and moved to the draft roller side standby position, and the lap bobbin is discharged from the lap roller and is also laid on the lap roller. After the full wrap bobbin is supplied, the movable guide plate is rotated from the guide position to the lap sheet cutting operation position. Then, the tip of the wrap sheet of the full wrap bobbin is blown off onto the movable guide plate by the air flow, and the dropped lap sheet is held by the movable guide plate and the pressing member at a predetermined position, and the wrap roller is reversed to wrap. After cutting the sheet and moving the movable guide plate to the guide position, the rear end of the lap sheet suction-held by the pipe is superposed on the tip of the newly supplied lap sheet, and the overlap of both lap sheets is performed. An automatic lap joining method, characterized in that at least a part of the portion is pressed by a movable guide plate and a pipe. 2. A guide position for guiding a wrap to a draft roller in front of a wrap roller of a textile machine provided with a plurality of processing units for sequentially supplying wraps and a wrap sheet cutting action position extending downward. A movable guide plate is movably arranged, and a pipe having a suction port presses the lap sheet on the movable guide plate to the movable guide plate at a position near the wrap roller, and a movable guide plate diagonally forward from the operating position. It is rotatably provided between the upper lap sheet and the standby position on the draft roller side where it cannot be engaged.When the lap bobbin being supplied approaches the air, the machine base is stopped and the pipe is placed in the working position. While the lap sheet being fed that is connected to the lap bobbin is being pressed against the movable guide plate, the lap roller is rotated in the reverse direction to lap the lap sheet. After cutting the blade, the pipe is rolled to the draft roller side standby position while the rear end of the cut wrap sheet is suction-held at the pipe suction port, and the lap bobbin is discharged from the lap roller. A full wrap bobbin is supplied onto the lap roller, and then the movable guide plate is pivotally arranged from the guide position to the lap sheet cutting action position, and the tip of the lap sheet of the full lap bobbin is flown onto the movable guide plate. The wrap sheet is wiped off by means of the movable guide plate and the pressing member at a predetermined position, the wrap roller is reversed to cut the wrap sheet, and the tip of the wrap sheet is arranged at a position corresponding to the working position of the pipe. And move the movable guide plate to the guide position, then operate the pipe from the standby position. The wrap sheet is sucked and held, the trailing edge of the lap sheet is held on top of the newly fed wrap sheet, and the overlapping portion of both wrap sheets is pressed against the movable guide plate. A method for automatically joining wraps, which is characterized by the following. 3. At least one of a position and a peripheral surface of the pipe, the position corresponding to the pipe arranged at the operating position of the movable guide plate, at least a position corresponding to the pressing member of the movable guide plate, and a pressing surface of the pressing member. 3. The automatic lap splicing method according to claim 2, wherein irregularities are provided on one side.