JPH09279422A - Automatic ending of lap and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically carry out the ending operation of a new and an old laps by fixing an apparatus having a relatively simple constitution to a comber. SOLUTION: A rear back roller 2 between a pair of lap feed rollers 1 and 2 is rotated and a small ball lap roll ER placed on the rollers 1 and 2 and fixed by a pressure device A. A starting end part 33 of a new lap NL wound on a full lap roll FR previously placed behind a pair of the lap feed rollers 1 and 2 is stripped by a new lap striping device B. The stripped new lap NL is supplied forward by rotating a feed roller 9 and a pair of auxiliary rollers 11. The new lap is superimposed on the old lap OL cut from the small ball lap roll ER and passed through between a pair of the lap feed rollers 1 and 2 and a pair of lap ending rollers 37 and 38 constituting a lap ending device C, which are mutually brought into contact with each other and pressurized, so as to end the new and old laps NL and OL.

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 laps and an apparatus therefor, and more specifically, a pair of lap supply rollers (hereinafter, referred to as "lap rollers") that constitute a comber machine. In the above, the present invention relates to a method and an apparatus for automatically joining new and old wraps. In the following description, "wrap" is used to generally refer to what is wound on a "lap roll", and "new wrap" and "old wrap" are lap joints. Use only when it is necessary to distinguish the old and new laps.

[0002]

2. Description of the Related Art Conventionally, an operator replaces a small wrap roll and a full wrap roll on a pair of wrap rollers that constitute a comber machine, and a lap joining operation. That is, when the supply lap on the pair of wrap rollers becomes small (the full wrap roll becomes the small lap roll), the comber machine is stopped, and the wrap connected to the machine base by hand from the small lap roll on the pair of lap rollers. , The small wrap roll is removed from the pair of wrap rollers, the spare lap roll located at the rear (full wrap roll) is rolled on the pair of wrap rollers, and then wound around the full wrap roll. The starting end of the new wrap is peeled from the roll, and the cut small lap roll is overlapped with the rear end of the old wrap and spliced. Such manual work is not only heavy labor but also takes time (comber machines usually have 6 to 8 deliveries), which causes a reduction in production efficiency.

In order to solve the above-mentioned problems, in a comber machine, the lap of a small ball wrap roll on a pair of lap rollers is cut, the small ball wrap roll is removed from the roller, and the full wrap is performed on the roller. An apparatus has been proposed in which a roll is newly placed and the rear end of the old wrap of the small ball wrap roll and the start end of the new wrap of the full wrap roll are joined. As such, JP-A-1-236149 and JP-A-4-263620 are referred to as JP-A-2-1697.
No. 29 and Japanese Patent Laid-Open No. 4-222234, which are produced by a comber preparation machine and use a conveyor machine for conveying a plurality of full wrap rolls arranged in accordance with the head pitch of the comber machine, each old and new. It is a device that takes over the lap,
The one is equipped with a device for splicing the wrap to the comber machine itself.

A method of joining the old and new laps of the comber machine,
Alternatively, in the apparatus, since the apparatus has a device for connecting the wrap from the comber preparation machine to the carrier machine that conveys the full wrap roll, it is not necessary to add a new device to the comber machine itself, but the carrier machine Only when equipped with. In addition, since the device for wrapping the wrap is arranged on the comber machine itself, there is an advantage that the lap splicing can be automated even in a factory that does not have the carrier machine.
Since many devices such as a shaft are required for the comber machine for the lap joining, there is a problem that the apparatus becomes large and complicated.

[0005]

In view of the above-mentioned problems, the present invention is a comber machine without using a carrier machine.
An object of the present invention is to enable automatic lap joining by mounting a device having a relatively simple structure on a comber machine.

[0006]

In order to solve this problem, a means adopted by the present invention is to drive and rotate a pair of auxiliary lap rollers arranged behind a pair of lap rollers constituting a commercial machine. Then, the new wrap is peeled off from the lap cut of the full wrap roll placed on the lap roll, and the new wrap is fed forward, so that the old wrap cut from the small lap roll on the pair of lap rollers. And a device for joining the new wrap, a pressurizing device for pressurizing and fixing a small lap roll that has been dropped from the pair of wrap rollers while the old wrap is still connected, and the pair of auxiliary wrap rollers Jet nozzle for stripping the starting end of the new wrap from the full wrap roll by jetting an air flow directly above the cut end of the full lap placed on the In order to hold a new wrap stripping device arranged vertically above the cut end of the full lap roll and a starting end of the new wrap stripped off by the new lap stripping device to be substantially horizontal. , A new lap holder arranged between the pair of auxiliary lap rollers and the pair of wrap rollers, and a pair of lap joint rolls can contact and pressurize the pair of lap rollers, It is configured to include each device such as a lap splicing roller device that is arranged so as to be able to move up and down directly above the pair of wrap rollers.

When the full wrap roll placed on the pair of lap rollers becomes a small lap roll, the back lap roller rotates about a fulcrum, and the roller and a new lap support arranged behind the roller. A space is created between the tool and the tool. The small ball wrap roll falls from this space portion to a predetermined accommodation portion and is fixed in the accommodation portion by a pressure device. The rear lap roller rotates in the opposite direction around the fulcrum and returns to the initial position, and the air jet nozzle that constitutes the new lap stripping device predetermines the cut edge on the pair of auxiliary lap rollers. Down to just above the lap cut of the full wrap roll placed in position. An air flow is ejected from this cut end from an air ejection nozzle to strip the new wrap from the full wrap roll, and the starting end of the new wrap is once held on the new wrap holder.
Each lap joint roller that constitutes the lap joint roller device is lowered, and the old lap placed in a continuous state on the pair of lap rollers is gripped. When the machine base is driven in this state, tension is applied to the old wrap, and the old wrap is cut between the back lap roller and the small ball wrap roll dropped in the accommodating portion. Simultaneously with the cutting of the old wrap, the pair of auxiliary lap rollers are driven and rotated to feed the new wrap whose start end is held on the lap holder forward, and the new wrap is placed on the rear end of the old wrap. The starting ends of the wraps are overlaid. Then, the old and new laps are spliced by passing them between a pair of the lap rollers and the lap splicing rollers that are in contact with each other and pressed.

Here, a feed roller is disposed between the pair of auxiliary lap rollers and the new lap holder, and not only the pair of lap rollers but also the lap splicing roller is contact-pressed against the feed rollers. In addition, by driving and rotating not only the pair of auxiliary wrap rollers but also the feed roller, the new wrap is more reliably fed. In addition, the rotation speed of the feed roller and the pair of auxiliary lap rollers with respect to the pair of lap rollers can be changed, whereby the new lap is appropriately drafted between the pair of lap rollers and the feed roller, and as a result,
No spots caused by lap joints.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to examples. FIG. 1 is a side view of an automatic lap joining device according to the present invention. Behind the nipper device N of the comber machine, a pair of lap rollers 1 and 2 are horizontally arranged at predetermined intervals along the front-rear direction of the machine stand (the direction in which the lap L flows). Among the pair of wrap rollers 1 and 2, the front roller is the front wrap roller 1 and the rear roller is the back wrap roller 2.
Full wrap roll F is placed on the pair of lap rollers 1 and 2.
R is placed.

First, the nipper device N will be described. In the comber machine, the wrap L wound around the full wrap roll FR placed on the pair of lap rollers 1 and 2 is spun and sent onto the cushion plate 3. Then, the tip of the wrap L held by the plate 3 and the nipper knife 4 is penetrated by a needle row (not shown) called a cylinder needle that is planted in the cylinder half wrap of the combing cylinder 5, and the wrap L is inserted. Short fibers and the like (including foreign matters such as nep) are removed from the resulting mixture to obtain fleece F. By moving the nipper device N forward, this fleece F is moved toward the detaching roller 6. In response to the forward movement of the fleece F, the detaching roller 6 is reversed, and the fleece F pulled out first is moved backward.
The rear end of the fleece F is overlapped with the front end of the newly formed fleece F (referred to as "piecing"). After that, the detaching roller 6 is rotated in the forward direction to take in the newly-fleshed fleece F. Further, the feed roller 7 that pressurizes the cushion plate 3 side rotates intermittently, and the lap L for the next combing is
It is sent further forward than the front end of the cushion plate 3. Then, the cylinder combing by the combing cylinder 5 and the top combing by the top comb 8 are performed, and the operation of sending the lap L intermittently is repeated. When the remaining amount of the lap L wound around the full wrap roll FR becomes small (becomes a small lap roll ER),
The machine base is stopped by a signal from a detector (not shown).

The structure of an apparatus for automatically joining laps according to the present invention will be described. As shown in FIG. 1, a feed roller 9 and a pair of auxiliary wrap rollers 11 are arranged in parallel with the pair of wrap rollers 1 and 2 in the rear of the wrap rollers 1 and 2. A pair of wrap rollers 1,
2. Feed roller 9 and pair of auxiliary wrap rollers 11
Are arranged parallel to the axial direction of the combing cylinder 5 described above. A lap plate 12 is arranged between the back wrap roller 2 and the feed roller 9 at a position as close to the back lap roller 2 as possible. A discharge chute 13 and a pressurizing device A are arranged behind and behind the pair of lap rollers 1 and 2. Further, a new lap stripping device B is disposed almost above the feed roller 9, and a pair of lap rollers 1 and 2 are provided.
A lap splicing roller device C is disposed immediately above.

As shown in FIG. 2, shafts 14 and 15 are fitted in the respective axial centers of the front wrap roller 1 and the back lap roller 2. Both ends of each shaft 14, 15 are supported by a pair of levers 16 arranged at right angles to the axial direction of each roller 1, 2.
Pulleys 17 and 18 are mounted near the ends of the shafts 14 and 15, respectively. These pulleys 1
A belt 19 is attached to the belts 7, 18. Of the pair of wrap rollers 1 and 2, the front wrap roller 1
Rotates by the rotational force from a motor (not shown) that drives the machine base. And front wrap roller 1
Is transmitted through the pulleys 17 and 18 and the belt 19 to the back lap roller 2
Rotates.

The pair of wrap rollers 1 and 2 rotate at a predetermined rotation ratio with respect to the rotation speed of the combing cylinder 5. The feed roller 9 is rotated at the same speed as the pair of lap rollers 1 or 2 by a servo motor (not shown) different from a motor (not shown) for driving the machine base, or a predetermined rotation ratio. To rotate. Then, the pair of auxiliary lap rollers 11 rotate by the rotational force of the feed roller 9 being transmitted by a pulley and a belt (not shown). The rotation speeds of the feed roller 9 and the pair of auxiliary lap rollers 11 with respect to the pair of wrap rollers 1 and 2 can be changed by means not shown.

As shown in FIGS. 1 to 3, a pair of levers 16 for supporting a pair of lap rollers 1 and 2 are
It is supported by the rod 21. A gear 22 is fixed to the outside of one lever 16. Below the front wrap roller 1, along the axial direction of the roller 1, there is a shaft 2 which penetrates the entire delivery of the comber machine.
3 are provided. A gear 24 that meshes with the gear 22 is mounted at a predetermined position on the shaft 23. In addition, in the vicinity of the gear 24, the lever 2
One end of 5 is attached to the shaft 23. Lever 2
The other end of 5 is rotatably attached to the tip of the rod 26a of the air cylinder 26. When the air cylinder 26 is actuated and the rod 26a thereof is projected, the lever 25 rotates about the shaft 23 in the direction indicated by the arrow P ₁ . At the same time, the gear 24 also rotates in the same direction. Therefore, the gear 22 rotates about the shaft 21 in the direction indicated by the arrow P ₂ . As a result, the backlap roller 2 rotates about the shaft 21 as a fulcrum in the direction indicated by the arrow P ₃ . Then, a space is created between the back wrap roller 2 and the lap plate 12, and the pair of wrap rollers 1 and 2 are interposed via this space.
The small ball wrap roll ER placed on the tray drops onto the discharge chute 13.

Next, the discharge chute 13 and the pressurizing device A will be described. As shown in FIG. 1, a discharge chute 13 is arranged behind and below the pair of wrap rollers 1 and 2. The discharge chute 13 includes a shooter 27, a side wall 28, and a conveyor 29. The conveyor 29 travels along the axial direction of the pair of wrap rollers 1 and 2 (direction perpendicular to the paper surface). An air cylinder 31 that constitutes the pressurizing device A is disposed outside the side wall 28 substantially horizontally with respect to the machine base. A pressure tool 32 is attached to the tip of the rod 31 a of the air cylinder 31. And the side wall 2
A hole (not shown) through which the above-mentioned pressurizing tool 32 passes is provided at a predetermined position of 8. Kodama Wrap Roll ER
Falls while rolling on the upper surface of the shooter 27 and is placed on the conveyor 29. When the air cylinder 31 is operated and the rod 31a thereof is projected, the pressing tool 32
Pressurizes the small ball wrap roll ER. Therefore, the small ball wrap roll ER is fixed in the discharge chute 13. Then, as will be described later, after the old wrap OL of the small ball wrap roll ER is cut, the small ball wrap roll ER is discharged by operating the conveyor 29.

Next, the new lap stripping device B will be described with reference to FIGS. 1 and 4. On the pair of auxiliary lap rollers 11, the full wrap roll FR is placed in advance. In the full wrap roll FR, the starting end portion (cut end) 33 of the new wrap NL having a tapered shape is the roll F.
It is placed at a predetermined position in front of R and upward. An air jet nozzle 34 that constitutes the new lap stripping device B is positioned almost directly above the starting end portion 33. Air jet nozzle 34 along the axial direction of full wrap roll FR
Is longer than the axial length of the roll FR. One end of the air jet nozzle 34 is attached to a rodless cylinder 35 that is erected on the outside of one side surface of the full wrap roll FR, and the other end is also erected parallel to the cylinder 35. It is attached to the guide 36. The air ejection nozzle 34 can be moved up and down by operating the rodless cylinder 35. When the rodless cylinder 35 is operated in a state where the full wrap roll FR is placed on the pair of auxiliary lap rollers 11, the air ejection nozzle 34 located above is lowered and wound around the full lap roll FR. New lap NL
Is located immediately above the starting end portion 33 of the. Air jet nozzle 34
Therefore, when the compressed air is ejected toward the starting end portion 33 of the new wrap NL, the starting end portion 33 of the new wrap NL is peeled off and falls freely.

Next, the lap joint roller device C will be described with reference to FIGS. 1 and 5. Lap splicing rollers 37 and 38 are disposed directly above the pair of lap rollers 1 and 2 so as to face the rollers 1 and 2, and immediately above the feed roller 9 there is a pair of follower rollers. Feed rollers 39 are disposed opposite to each other. Both ends of the lap joint rollers 37, 38 and the feed roller 39 in the axial direction are attached to the rodless cylinders 41, 42 which are erected on the shaft ends of the rollers 37 to 39, respectively. The lap joint rollers 37, 38 and the feed roller 39 can be moved up and down by operating the rodless cylinders 41, 42. When each rodless cylinder 41, 42 is actuated, each lap splicing roller 37, 38 located above descends, contacting and pressing the upper surfaces of the pair of lap rollers 1, 2 facing each other, and The feed roller 39 located at is also lowered to contact and press the upper surface of the feed roller 9 immediately below.

Next, the feed roller 9 and the pair of auxiliary lap rollers 11 will be described with reference to FIG. As described above, the feed roller 9 is rotated by the servo motor (not shown). And the feed roller 9
Is transmitted to the pair of auxiliary wrap rollers 11 to rotate the pair of auxiliary wrap rollers 11. That is,
The pair of auxiliary lap rollers 11 not only has a spare full wrap roll FR placed thereon, but also has a function of feeding the new lap NL stripped from the full lap roll FR forward. An air cylinder 43 is arranged behind the pair of auxiliary lap rollers 11 substantially horizontally to the machine base. This air cylinder 43
After the new lap NL stripped off from the full wrap roll FR is joined to the old lap OL, the rod 43a is projected to roll the full lap roll FR forward and to be mounted on the pair of lap rollers 1 and 2. It is for placing.

Next, the operation of the device for automatically joining the laps will be described. As shown in FIGS. 1 and 6,
When the lap L of the full wrap roll FR placed on the pair of lap rollers 1 and 2 is spun and the remaining amount thereof becomes small (small ball lap roll ER), a signal from a detector (not shown) The machine stand stops. Then, the air cylinder 26 is operated and the rod 26a thereof is projected to rotate the lever 25 upward. Then, each gear 2
Since a pair of levers 16 pivots downward via 2, 24, a space is created between the back lap roller 2 and the lap plate 12. The small ball wrap roll ER falls from this space while rolling on the upper surface of the shooter 27,
It is placed on the conveyor 29. At this time, the lap L (old lap OL) connected to the nipper device N from the small ball wrap roll ER is still connected to the roll ER.

As shown in FIG. 7, the air cylinder 26 is operated again to rotate the pair of levers 16,
Return the backlap roller 2 to a horizontal position with respect to the machine base. On the pair of auxiliary lap rollers 11, the full wrap roll FR is placed in advance. In addition, the starting end portion (cutout) 33 of the new wrap NL wound around the roll FR
Is arranged at a predetermined position facing upward in front of the roll FR. The air jet nozzle 34 is operated by operating the rodless cylinder 35 that constitutes the new lap stripping device B.
Is lowered, the nozzle 34 becomes full wrap roll FR.
It is located immediately above the start end portion 33 of the new wrap NL that is wound around. Then, the compressed air is ejected from the air ejection nozzle 34 toward the starting end portion (cut end) 33. As a result, the start end portion (cut end) 33 of the new wrap NL is peeled off from the full wrap roll FR and falls freely, and is placed on the lap plate 12 arranged between the feed roller 9 and the back lap roller 2. Placed. The new wrap N is placed on the lap plate 12 until the new lap NL that has been peeled off and dropped is placed and is overlapped with the old lap OL.
It is for holding L. Therefore, as long as it has the above-mentioned function, it does not have to be a flat plate shape. For example, a roller shape may be used.

As shown in FIG. 8, the air jet nozzle 3
4, the rodless cylinder 41 constituting the lap joint roller device C is operated, and the respective lap joint rollers 37, 38 and the feed roller 39 are lowered. Then, the lap splicing rollers 37 and 38 and the feed roller 39 respectively correspond to the pair of lap rollers 1 and 1.
2 and the feed roller 9 are contacted and pressed. The lap splicing rollers 37 and 38 and the pair of lap rollers 1 and 2 are brought into contact with each other to be pressed, whereby the pair of lap rollers 1 and
The lap L (old lap OL) placed on 2 is pressed. Further, the lap joint roller 39 contacts and pressurizes the feed roller, so that the new lap NL is pressed. In this state, when the air cylinder 31 constituting the pressurizing device A is operated and the rod 31a thereof is projected, the pressurizing tool 32 attached to the tip of the rod 31a.
Presses the small ball wrap roll ER placed on the conveyor 29. Therefore, Kodama Wrap Roll ER is
It is fixed in the discharge chute 13.

As shown in FIG. 9, when the pair of wrap rollers 1 and 2 are rotated in this state, the nipper device N
Old lap OL which is connected to Kodama wrap roll ER
Tension is applied to. Therefore, the old wrap OL is cut so as to slip through at a position approximately in the middle between the back wrap roller 2 and the small ball wrap roll ER. At the same time, when the feed roller 9 and the pair of auxiliary lap rollers 11 are rotated, the new lap NL is fed forward. The start end portion 33 of the new wrap NL fed forward is cut off and the rear end portion 44 of the old lap OL left on the back lap roller 2 is cut.
Each lap splicing roller 37, 3 while overlapping with
8 and a pair of lap rollers 1, 2. Since the lap splicing rollers 37 and 38 and the pair of lap rollers 1 and 2 are in contact with each other and pressed, the overlapping old and new laps NL and OL are pressed and spliced.

The rotation speeds of the feed roller 9 and the pair of auxiliary lap rollers 11 can be freely controlled by a servo motor (not shown). Also, the servo motor,
According to the command, it is set to be approximately 1/3, 1/2, or constant speed with respect to the rotation speed of the motor for driving the machine base for several seconds after starting. Therefore, new lap N
L is a back lap roller 2 and a lap joint roller 3
When it is gripped by the back wrap roller 2 and the feed roller 9, the back wrap roller 2 and the feed roller 9 are drafted 3 times and 2 times, and the back wrap roller 2 and the cut old wrap OL are cut.
And the lap splicing roller 38 grips and splices. Since the rear end portion 44 of the cut old wrap OL and the start end portion 33 of the drafted new wrap NL are overlapped and joined, no spots due to lap joining occur. When the old and new lap NLs and OLs are spliced, the lap splicing rollers 37 and 38 of the lap splicing roller device C are formed.
And the feed roller 39 that forms a pair with the feed roller 9 ascend.

As shown in FIG. 10, while rotating the pair of wrap rollers 1 and 2 and the feed roller 9, the air cylinder 43 is operated and the rod 43a thereof is projected. Then, the full wrap roll FR placed on the pair of auxiliary lap rollers 11 rolls and moves forward, and is placed on the pair of lap rollers 1 and 2. A new full wrap roll FR is placed on the pair of auxiliary lap rollers 11. The small ball wrap roll ER returns the rod 31a of the air cylinder 31 to the conveyor 29.
It is discharged by traveling around.

In the apparatus for automatically joining laps according to the present invention, the feed roller 9 is provided so that the new lap NL can be fed more reliably forward.
However, by arranging the pair of auxiliary lap rollers 11 as close as possible to the lap plate 12,
It is also possible to feed the new lap NL only by the pair of auxiliary lap rollers 11. Since the rear end of the cut old wrap OL is cut by tension, the wrap O
L becomes thinner toward the rear end, and since the front end of the new lap NL is drafted and gradually thickened, both the laps OL and NL are overlapped and spliced together, so that no spots occur.

[0026]

According to the present invention, by mounting a device having a relatively simple structure on a comber machine, an operation of dropping and ejecting a small ball wrap roll, and cutting an old wrap connected to the dropped small ball wrap roll are carried out. Operation, operation of peeling off the new wrap wound on the full wrap roll, feeding of the peeled new wrap, overlapping of this with the cut old wrap, contacting the overlapping old and new wraps with each other It is possible to automatically perform each operation of the operation of continuing by passing between the pressured rollers. Therefore, the old and new laps can be automatically inherited.

[Brief description of drawings]

FIG. 1 is a side view of an apparatus for automatically joining wraps according to the present invention.

FIG. 2 is a sectional view taken along line X ₁ -X _{1 of} FIG.

FIG. 3 is an enlarged view of a portion that rotates a pair of wrap rollers 1 and 2 in FIG.

FIG. 4 is a view on arrow X ₂ of FIG.

5 is a view on arrow X _{3 of} FIG. 1. FIG.

FIG. 6 is an operation explanatory view showing a state in which the small lap roll ER is dropped in the device for automatically joining laps according to the present invention.

[Fig. 7] Similarly, the start portion 3 of the new wrap NL wound around the full wrap roll FR by the new lap stripping device B.
It is an action explanatory view showing the state where 3 is stripped off.

FIG. 8 is an operation explanatory view showing a state where the new wrap NL and the old lap OL are gripped by the lap joining roller device C.

9] Similarly, the feed roller 9 and a pair of auxiliary lap rollers 11 are rotated to cut the old lap OL,
It is an action explanatory view showing the state where new lap NL is piled up.

FIG. 10: Similarly, rolling the full lap roll FR,
It is an operation explanatory view showing a state where it is placed on a pair of lap rollers 1 and 2.

[Explanation of symbols]

 A: Pressurizing device B: New wrap stripping device C: Lap splicing roller device ER: Small wrap roll FR: Full wrap roll NL: New wrap OL: Old wrap 1: Front lap roller (lap supply roller) 2: Back lap Roller (Wrap Supply Roller) 9: Feeding Roller 11: Auxiliary Wrap Roller (Auxiliary Wrap Supply Roller) 12: Wrap Plate (New Wrap Holder) 13: Discharge Chute 33: Starting End 37, 38: Wrap Splicing Roller

Claims (6)

[Claims] 1. A pair of auxiliary lap supply rollers arranged behind a pair of lap supply rollers constituting a comer machine are driven and rotated so that the lap cuts of a full lap roll placed on the auxiliary lap supply rollers are rotated. A method of joining an old wrap and a new wrap cut from a small ball wrap roll on the pair of lap supply rollers by peeling off the new wrap and sending the new wrap forward, The small lap roll that was dropped from the lap supply roller while the old wrap was still connected was used to apply tension to the old wrap by operating the machine base, and the rear lap supply roller and the small lap roll that were dropped An old lap cutting step of cutting an old lap between and, of the full wrap roll placed on the pair of auxiliary lap supply rollers. Ri by ejecting air flow from directly above the mouth,
A new lap stripping step of temporarily holding the start end portion of the new wrap stripped off from the new wrap holder, which is disposed substantially horizontally in front of the pair of auxiliary lap supply rollers, and the pair of lap supply rollers. With the lap splicing rollers in contact with each other, press both the machine base and the pair of auxiliary lap supply rollers to overlap the starting end of the new wrap on the rear end of the old wrap. A lap joining step of joining each of the old and new laps by passing them between the rollers that are in contact with each other and pressed against each other, and a method of automatically joining the laps. 2. A pair of auxiliary lap supply rollers arranged behind a pair of lap supply rollers constituting the comer machine are driven and rotated so that the auxiliary lap supply rollers are mounted on the auxiliary lap supply rollers. A device for joining the old wrap and the new wrap cut from a small ball wrap roll on the pair of lap supply rollers by peeling off the new wrap and sending the new wrap forward, A pressure device for pressurizing and fixing the small lap roll that has been dropped from the lap supply roller while the old wrap is still connected, and the cut portion of the full lap placed on the pair of auxiliary lap supply rollers. An air jet nozzle for jetting an air flow from directly above to peel off the starting end of the new wrap from the full wrap roll is provided directly above the cut end of the full lap roll. A new lap stripping device arranged so as to be capable of descending, and a pair of auxiliary lap supply rollers for holding the starting end of the new lap stripped off by the new lap stripping device in a substantially horizontal direction. A new lap holder arranged between the pair of lap supply rollers, and a pair of lap joint rolls can contact and pressurize the pair of lap supply rollers, Equipped with a lap splicing roller device that can be moved up and down directly above, a small lap roll that has been dropped from a pair of lap supply rollers while the old laps are connected is pressure-fixed by the pressure device to drive the machine base. By doing so, the old wrap is cut between the roll and the rear wrap supply roller, and both the pair of auxiliary lap supply rollers and the machine base are driven. By doing so, the starting end portion of the new wrap is superposed on the rear end portion of the old wrap, and these are passed between the pair of lap supply rollers and the pair of lap joint rollers that are in contact with each other and pressed. By doing so, a device that automatically splices new and old laps. 3. The device for automatically joining laps according to claim 2, wherein a feed roller is horizontally arranged between the new lap holder and the pair of auxiliary lap supply rollers. 4. The device for automatically joining laps according to claim 3, wherein the rotational speeds of the pair of auxiliary lap supply rollers and the feed roller can be changed with respect to the pair of lap supply rollers. 5. An apparatus for automatically joining laps according to claim 3 or 4, characterized in that a pair of feed rollers which are brought into contact with and pressurized by the feed rollers are arranged directly above the feed rollers so as to be able to move up and down. 6. The device for automatically joining laps according to claim 2, wherein the new wrap holder is constituted by a plate arranged horizontally.