JP2763968B2 - Method of joining lap in lap processing machine and lap processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a textile machine for processing textile material in the form of a wrap. More particularly, the invention relates to a comber having at least one combing head comprising a combing unit and carrier means for carrying a roll of wrap to be combed. The invention further relates to a ribbon wrapping machine comprising a drafting mechanism and a carrier means for carrying a roll of wrap to be drafted.

[0002]

This application is a continuation-in-part of U.S. application Ser. No. 07 / 431,431, filed Nov. 3, 1989. As is well known, a comber that receives a supply of wrap from a roll mounted on a carrier means is equipped with detection means, including photocells and phototubes, and stops the machine when the wrap is consumed to its terminal. It is made to let. The carrier means is then replenished with a new roll of wrap, either manually or by transport means. After the tip of the wrap from this new wrap (shredded to length if necessary) is manually placed on the rear end of the wrap of the previous roll, pressed and connected to it, Restarted. The thickness of the lap formed by this operation has a negative effect on the quality of the product (combing sliver) (even though the tip of the new lap has been successfully withdrawn by the operator).

[0003] US Patent Specification No. 2,559,074 describes a technique for automating the aforementioned manual operation. As mentioned above, the end of the incoming wrap is superimposed on the end of the outgoing wrap upstream of the forward wrap rewind roller, thus forming a seam (overlap)
Passes through the combing unit along the normal lap movement path. The use of "comb teeth" to separate outgoing wraps is also mentioned, but this is merely a cutting operation and is independent of the preparation of the wrap ends.

[0004]

This U.S. patent specification no.
The device according to 2,559,074 presents significant quality disadvantages due to the overlap of the ends of the wraps, and is liable to jam the combing unit by doubling the thickness of the feed wrap, making it inoperable. It has a tendency to reach.

Accordingly, it is an object of the present invention to stop the operation of the combing unit (or other lap processing unit) by making the leading end of the wrap of the new roll the trailing end of the wrap of the previous roll, and it is difficult to accept the quality of the product. It is to automatically and reliably overlap without causing deterioration. It is another object of the present invention to join the ends of the wrap in a simple and secure manner in a lap processing machine so as not to degrade the quality of the seam.

[0006] Briefly, the present invention relates to the joining of a newly incoming wrap to an outgoing wrap extending to a lap processing head of a lap processing machine, and to the end of the outgoing wrap. Prepare the tip of the wrap appropriately,
It provides a method of superimposing on each other and pressing together to feed to a lap processing unit.

[0007]

According to one aspect of the invention, the outgoing wrap is joined to the incoming wrap in the downstream region of the supply wrap carrier. To enable this, support means are provided for supporting a predetermined length of outgoing wrap extending from the support means to the wrap processing unit.

According to a second aspect of the present invention, a prepared end is formed at a predetermined length of the wrap extending to the wrap processing unit, and another prepared end enters. Formed on a wrap, these ends are aligned downstream of the carrier. The present invention provides at least one lap processing head comprising a lap processing unit and carrier means for supporting a roll of lap which is subjected to a combing action by means for forming a processed end of the outgoing wrap, Means for supporting a predetermined length of an outgoing wrap having a processed end in position upstream of the wrap processing unit; means for forming a prepared end on an incoming wrap; and A lapping machine is also provided having means for aligning and feeding both prepared ends to the lapping unit.

A lapping machine according to yet another aspect of the present invention comprises a lapping processing unit and means for forming a prepared end on an outgoing wrap and a prepared end on an incoming wrap. At least one lapping head comprising carrier means for supporting a roll of wraps to be processed, means for aligning the prepared ends one on top of the other, and wrapping having wrapped ends. The lap processing unit has an advancing means for advancing the lap processing unit.

One embodiment of the present invention is described in (November 3, 1989)
According to U.S. patent application Ser. No. 07 / 431,431 (filed earlier) filed on Jan. 10, 2004, a combing unit and a wrap roll for combing and a wrap path from the roll to the combing unit. At least one combing head having carrier means having a pair of conveying rollers, cutting a first wrap from a first roll to form a first end on a wrap supplied to a combing unit; A comber having means for cutting a second wrap from a new roll after the transport roller to form a second tip, and means for joining the second wrap end to the first wrap end. In this example, the means for joining the wrap ends includes a pair of pressing rollers provided on a luff path, and a movable member provided on the pair of rollers for joining at least one of the two wrap ends. Deflection element. According to this example, the cutting means is adapted to form a prepared lap end suitable for lapping and bonding and which does not cause significant quality defects.

As described in the prior application, it is desirable to provide a detecting means for determining a time at which the first wrap is almost completely rewound from the first roll. The detection means starts the control means at that time, whereby the means for cutting the first wrap are activated, then the roll transport means for supplying a new roll to the carrier means is activated, and further the second lap cutting means Is activated, and the means for connecting the second wrap end to the first wrap end is activated.

The invention is particularly suitable for combers with one or more combing head groups, for example eight combing heads or two sets each containing six combing heads, the exchange of the lap rolls in all the combing heads being carried out simultaneously at any time. In this case, the control means is configured to act on all the combing heads in the group simultaneously. In order to start this control means, a detection means is provided for each of the combing heads in the group, respectively, and the control means is arranged so that as soon as the first wrap from the first roll is almost completely rewound in one of the combing heads in the group. It is desirable to start the operation at the same time.
The first group of wraps is then automatically cut at all combing heads at the same height and a new roll is supplied, and a second wrap is cut from the new roll at the same height and the wrap is wrapped. The ends are joined.

Other objects and advantages of the present invention will be described in more detail based on preferred embodiments shown in the drawings.

[0014]

DETAILED DESCRIPTION OF THE INVENTION In the present specification, reference will first be made to the conventional combing head shown in FIGS. One such embodiment is already disclosed in the above-mentioned prior application, the construction of which is included here as FIGS. 1-8 and forms the basis for the improvement shown in the other drawings. ing.

[0015] The various configurations shown in this application include:
Only those elements of the comb which are relevant for the operation of the invention are shown. Furthermore, only those operating steps directly related to the operation of the present invention have been described. A more complete description of combing can be found, for example, in The Research Institute in Textile Technology, Charlotteville, Virginia, USA, The Research Series in Textile Processing (The Institute of Textile Technology).
Zoltan, Volume 3 of "eries on Textile Processing"
It is described in S. Szaloki, “Articles, Combing, Roving”.

In contrast to this background art, the combing head, shown schematically in FIG. 102, reversible nipper drive shaft 10
3 and a pair of detaching rolls 104. The nipper drive shaft 103 carries a crank arm 105 whose rear end is supported at a position indicated by reference numeral 62. Nipper assembly 60
Is pivotally supported by a link 67, which is rotatable about the axis of the drive shaft 102 of the combing cylinder 111.

The nipper assembly 60 further includes a cushion plate 63, the front end of which (not specifically numbered) cooperates with the upper nipper element 68 to form a gripping nip K. The nipper element 68 is connected to the nipper assembly 6 at reference numeral 69.
It is carried by a lever 65 which is pivotally supported by the main structural material of the zero. A so-called feed roll 110 is installed immediately after the pair of nippers 63,68.

These elements described with reference to FIG. 9 constitute the basic working elements of the combing unit which perform the basic function of the comber. The combing operation itself is not directly related to the present invention, and the details thereof are described in, for example, the above-mentioned literature, so that the description of the operation is omitted here. Here, a sheet of fiber to be wrapped or combed is advanced (by a system described below) toward a feed roll 110 and then the pair of nippers 63, 68 with the aid of a guide plate.
It is sufficient to state that the nip K is advanced to the nip K formed by The fibers protruding from the nip are combed by the needles of the half-wrap 120, and then transferred to and connected to the fiber whiskers protruding from the rear of the detaching roller 104 by the nippers.

After the nipper has laid the newly combed fiber beard on the fiber beard projecting from the detaching roller, the nipper is opened and retracted. On the other hand, the newly combed fiber is pulled out of the combing unit by the detaching roller 104. At this stage, the fibers being pulled forward by the detaching rollers are further combed by a so-called top comb (not shown in FIG. 9). In the meantime, the nipper is returned to the starting position shown in FIG. Obviously, this effect is essentially discontinuous since the feed roll 110 operates intermittently.

The wrap subjected to the combing action is, for example, 3
It has a width of 0 cm and is set on the machine in roll form, which is partially shown in FIG. The roll of wrap is placed on two carrier rollers, one of which is shown at 100 in FIG. The second carrier roller is arranged parallel to the first carrier roller, and both rollers rotate so as to rewind the roll 101 to continuously supply the wrap to the above-mentioned combing unit. The applicant's earlier European patent application no.
In the supply system described in 338 300,
The wrap unwound from the roll 101 is first transferred to a substantially horizontal guide plate 113, and then to a substantially vertical guide plate 114, from which the wrap is transferred to the feed roll 110 and the aforementioned guide plate 66. .

The guide plates 113 and 114 are designated by reference numeral 1.
At 90 places, clamp bars 201 and 210 and screws 22
At 0,230, they are pivotally connected by a band of flexible material attached to each plate. The other ends of these plates are attached to the frame (not shown) of the machine by suitable connecting means indicated by reference numerals 115 and 117. These pivot points 115, 117, 190 allow the mutual position of the plate 113 and its position relative to the machine frame to be adjusted according to the reciprocating movement of the nipper assembly 60 defined by the combing action described above. By properly guiding / supporting the wrap between the wrap roll carrier assembly 100 (partially shown) and the combing unit, the wrap may be intermittently taken into the combing unit and processed. The wrap can be continuously supplied from the row 101 at a low speed.

As can be seen from FIG. 9, the front carrier roller 100 (ie, the roller closer to the combing unit) is set behind the combing unit and, after the wrap has left the roll 100, some horizontal movement of the wrap. Exercise is required. This horizontal movement of the wrap causes the plate 11 to move until the wrap reaches a position just above the feed roll 110.
3, after which the path of the wrap bends substantially vertically downward and is guided by the plate 114. This movement pattern (trajectory of the machine) is not essential, and FIG. 10 shows another example.

The terms used in US Pat. No. 3,479,699 are also used to describe the example of FIG. When used, the sliver wrap 200 is carried by the pair of wrap support shafts 202 and 204, rewound, and the cushion plate 206 and the grooved feed roll 20 are wound.
8, and a nipper assembly having a nipper knife 212 that forms a nip in cooperation with the cushion plate 206. Detaching roll 214, 21
6 withdraws the fiber after it has been combed by half-wrap 218 driven on shaft 222. As shown in FIG. 10, the nipper assembly moves the carrier roller 20 so that the wrap moves substantially vertically downward.
2 is located almost directly below.

The nipper assembly rotates like a pendulum about a nipper swing shaft, part of which is shown at 226. The accumulator bar 224 moves back and forth between a position indicated by a solid line and a position indicated by a dotted line in synchronization with the movement of the nipper assembly. Absorbs the resulting loose wrap.

The following description first discusses a proposal for automating the mechanism of FIG. Thereafter, an improved example thereof suitable for other combing systems will be described. FIG.
2 shows a vertical section of a basic part of a combing head. As described above, the basic combing element of the combing unit of the combing head includes a rotatable comb 1, a top comb 2, two detaching rollers 3, and a lower nipper 4 and a rotatably pivoted support. And an upper nipper 5 provided. A drivable feed roller 6 is mounted on the lower nipper 4 and a wrap 7 is supplied to it for combing. The wrap 7 is supplied by being rewound from a roll 8 mounted on a carrier means comprising two parallel wrap rollers 9 and 10 in the illustrated example.

From the roll 8, the combing elements 1 to 5
A pair of transport rollers, a lap cutting unit, and a unit for connecting the first wrap end to the second wrap end are provided in the path of the wrap 7 reaching the wrap 7. Here, the first wrap end is the rear end of the wrap going into the combing element, and the second wrap end is the front end of the wrap going out of a new wrap roll, which will be described in detail later.

In the illustrated example, the pair of transport rollers comprises a front wrap roller 9 and a pressure roller 11 associated therewith. In another example, a pair of transport rollers different from the front wrap roller 9 is provided for wrapping from the roll 8. The conveying roller pairs 9, 11 are driven by controlled driving means 12.

In the illustrated example, the lap cutting means comprises:
The wrap is configured to be cut after the pair of transport rollers 9 and 11. For this purpose, a second pair of conveying rollers 13, 14 is provided after the first pair of conveying rollers 9, 11 and is driven by a second controlled driving means 15. During normal operation of the comber, both transport roller pairs 9, 11 and 13, 14 are driven at the same peripheral speed. When cutting or tearing the wrap, the driving means 12 and 15 are connected to the pair of conveying rollers 9 and 11 as described later.
And 13, 14 are rotated at different peripheral speeds and / or in different directions, so that the wrap 7 is torn between the two roller pairs. In another example, the first transport roller pair 9, 11 stops and the second transport roller pair 13, 14 continues to rotate, or the first transport roller pair 9, 11 is driven in the opposite direction, On the other hand, the second pair of conveying rollers 13 and 14 may be stopped. In each case, the wrap is cut.

The means for connecting the first wrap end to the second wrap end includes a pressing roller pair 1 driven by a driving means 18.
6, 17 and a movable deflection element for at least one of the two wrap ends to be joined together. In the example shown, the deflecting element is a slide 19 mounted upstream of the pair of pressing rollers 16, 17 in the direction of movement of the wrap 7, which slide is moved, for example, by a piston / cylinder unit 20. . FIG. 1 shows a combing head performing a normal operation. The wrap 7 is unwound from the roll 8 by the rotation of the wrap roller 9 and is supplied to the combing elements 1 to 5 by the conveying roller pairs 13, 14 and 16, 17 rotating at the same peripheral speed, and the combing action is performed by the combing element. Receive. But,
In FIG. 1, the wrap 7 has already been substantially completely unwound from the roll 8. This time point is detected by a detecting means such as the photoelectric cell 21 or the like. The photocell is a roll 8
That the end 7a of the wrap 7 has passed over the core 8a of the wrap 7 is detected by the color or gloss difference between the wrap 7 and the core 8a. Of course, other detection means can be utilized for this purpose.

The detecting means 21 sends a signal to the control means 22. The control means controls the driving means 12, 15, and 18 and other driving means for the comber, which will be described later, so that the lap is automatically replaced. . The control means 22 first activates the piston / cylinder unit 23 to rotate the rear wrap roller 10 downward as shown in FIG. Thus, the emptied core 8a rolls backwards by gravity and rests on the guide 24 and reaches the collector means in the form of a trough plate 25. Under such circumstances, the remaining wrap is unwound from the core 8a.

The control means 22 then drives the drive means 12 (FIG. 1)
To stop the pair of conveying rollers 9 and 11 or rotate them in the opposite direction. Therefore, wrap 7
Is torn off while the second conveying roller pair 13 and 14 continues normal rotation. This cutting is performed on both conveying roller pairs 9, 11
And between 13 and 14, a new wrap trailing end 7b
Are formed at precisely defined locations on the wrap 7 supplied to the combing elements 1 to 5, as shown in FIG.

The second conveying roller pairs 13 and 14 and the pressing roller pairs 16 and 17 continue to rotate until the newly formed rear end 7a of the wrap stops just before the pressing roller pairs 16 and 17 as shown in FIG. I do. The driving means 18 of the pressing roller pair 16, 17 is stopped next, and at the same time, the combing elements 1-5
(FIG. 1) also stops. Even if the first transport roller pair 9, 11 is simply stopped and the wrap 7 is torn, the cut rear end 7c of the wrap 7 is held by the transport roller pair 9, 11 as shown in FIG. Remains intact. Therefore, the conveying roller pair 9, 11 rotates again in the forward direction together with the second conveying roller pair 13, 14, and supplies the end portion 7c to the suction / draw-out duct 26 to be sucked into the duct. Alternatively, the end 7c is sucked into a suction / drawing duct 26 provided further rearward, and the first conveying roller pair 9, 11
Rotates in the opposite direction until the end 7c falls into this suction / draw-out duct 27. However, when the wrap 7 has been cut by sufficiently reversing the first pair of conveying rollers 9 and 11, the tip of the end 7c falls into the duct 27 without difficulty and does not require any further rotation. .

The rear wrap roller 10 is rotated by the operation of the piston / cylinder unit 23 and returns to its top position, that is, the normal operation position. Next, the control means 22
The wrap roll transporter shown in FIG. 5 with only the arm 28 having the supporting trunnion 29 is activated. This roll transport device carries a new wrap roll 8 ′ and places it on the wrap rollers 9, 10.

Next, the conveying roller pairs 9, 11 and 13, 1
4 rotates in the forward direction. The wrap roller 9 rotates the wrap roll 8 'on it. The surface of the wrap roller 9 has an air-permeable or perforated structure, in which a stationary tube 9a is installed, and a slot 9b is provided in the upper region. This tube 9
A suction force is generated in a, and air is sucked through the slot 9b and the air-permeable surface of the wrap roller 9. Tip 7a 'of wrap 7' unwound from new roll 8 '
Immediately reaches the wrap roller 9
Receiving suction force from As a result, as shown in FIG.
The tip 7a 'is attracted to the surface of the wrap roller 9.
The wrap 7 'is then transferred to the conveying roller pairs 9, 11 and 13, 14
Moved down by

After the leading end 7a 'of the wrap 7' has passed the second pair of conveying rollers 13 and 14, after a predetermined time delay, the first 7a '
The conveying roller pair 9, 11 stops, or the second conveying roller pair 13, 14 is accelerated as compared with the first conveying roller pair 9, 11. As a result, the wrap 7 'is torn between the lied roller pairs 9, 11 and 13, 14 and the front end 7b' of the new wrap is wrapped 7 'unwound from the roll 8' as shown in FIG. It is formed at the precisely defined location above.

The cut end portion 7c 'of the wrap 7' is sucked into the suction / draw-out duct 26, and is removed after completely passing through the second conveying roller pair 13, 14. Both transport roller pairs 9, 11 and 13, 14 then continue running at the same peripheral speed, moving the wrap 7 'coming out of the roll 8' downward. When the new wrap front end 7b 'has almost reached the position in front of the pair of pressing rollers 16 and 17 or the position between the rollers and the slide 19 as shown in FIG. The slide 19 is moved leftward toward the pair of pressing rollers 16 and 17. As shown in FIG. 8, under such circumstances, the slide 19 contacts the leading end 7b 'of the wrap and places it on the rear end 7b of the wrap 7. The rear end 7b of the wrap is held by the nip of the pair of pressing rollers 16 and 17 and protrudes therefrom, and a part thereof rests on the surface of the lower pressing roller 17.

Then, the driving means 18 for the pressing roller pairs 16 and 17 and the driving means for the combing elements 1 to 6 are operated again. The rear end 7b of the wrap 7 together with the front end 7b 'of the wrap 7' placed thereon
6, 17 where both ends 7b, 7b 'are pressed together and joined. Under these circumstances, the slide 19 is again pulled to the right by the piston / cylinder unit. The combing head then returns to normal operation.

FIG. 8 shows a state in which the collecting means 25 carrying the empty roll core 8a is raised to an upper position by a driving means in the form of a piston / cylinder unit 30. In this upper position, the empty roll core 8a is discharged by engaging with the roll conveying means 28, 29 (FIG. 5), and then the collecting means 25 lowers again to the start position shown in FIG.

The above-mentioned combing heads are installed as a group in a comber and are provided with combined driving means for the combing elements 1 to 5 of all the combing heads in the group. The control means 22 cooperates with all the combing heads in the group.
The driving means 12, 1 controlled by the control means 22
5, 18 and piston / cylinder units 20, 23, 3
0 cooperates with all the combing heads in the group, together with the means for generating a suction force on the front wrap roller 9 and the suction / draw-out ducts 26, 27 (in principle, a common control means is provided for each drive means Can also be controlled).

On the other hand, each combing head in the group has a detecting means 21 (FIG. 1) associated with itself. As soon as the wrap 7 has been substantially completely rewound in one combing head, the associated detecting means 21 signals a common control means 22 and at the same time the aforementioned lap 7 in all the combing heads in the group. Perform the exchange. At the start of the lap change operation,
Wraps 7 of different lengths remain on the core 8a of each combing head in the group. However, the new wrap trailing edge 7b formed by the simultaneous cutting of the wrap 7 between the transport roller pairs 9, 11 and 13, 14 is at the same height on all the combing heads in the group. Similarly, a new wrap front end 7b 'formed by cutting a new wrap 7' is used for the wrap roll conveying means 2.
Even if the wrap tip 7a 'on the new wrap roll 8' supplied by 8, 29 is not exactly at the same location on the roll surface, it is at the same height in all combing heads. Therefore, the front end 7b 'of the lap can be joined to the rear end 7b by the slide 19 and the pressing rollers 16 and 17 without any difficulty in the same manner in all the combing heads.

In the above-mentioned combing head,
When the wrap is replaced, two transport roller pairs 9, 11, and 1
By separate driving of the wrap rolls 3 and 14, both wraps 7 and 7 'are cut off respectively from the wrap roll 8 and the new wrap roll 8'. However, in an improved embodiment, separate means are provided for cutting the wrap 7 and for cutting the wrap 7 '. There is no absolute need to provide a second pair of transport rollers for the purpose of cutting the wrap. Alternatively, other cutting means configured to be actuated by the control means 22 may be provided.

The above-mentioned prior application refers to the cutting of the wrap. However, it is not preferable to produce any of the following results. A poor cut end with a deep indentation at the wrap end to be joined, or a very sharp cut end (sheets with scissors) with substantially no fibers protruding from the cut surface. Like cut).

The preferred shape of the wrap end is one in which the fiber whiskers or tufts protrude from a substantially straight base line perpendicular to the length of the wrap. The whiskers need to be progressively thinner compared to the normal thickness of the wrap sheet. In such a case, the prepared two wrap ends are usually shaped to be close to the combed wrap ends to be joined on the comber by the piecing operation with the detaching roller. Therefore, the lap joining operation
This is similar to the joining of a normal combing web performed by the roll 104 (FIG. 9) or 214, 216 (FIG. 10).

This shape of the prepared wrap end allows the wrap to be gripped along a straight line without holding the removed fiber directly by the gripping force or indirectly by the fiber sheet. It can be best formed by applying (similar to the gripping force applied by the nipping element). Preferably, the gripping force is evenly distributed along a gripping line, ie, a line across the width of the wrap.

The desired result is obtained by sandwiching the wrap between a pair of rolls and pulling the wrap in the area of the gripping nip (as described with respect to FIGS. 1-8) by a second pair of rollers. The distance between the gripping nips is
Must be at least slightly larger than the longest fiber in the combing assembly. This distance may be several cm longer than the longest fiber of the wrap. This operation creates two "prepared" ends upstream and downstream of the break. However, only one of them is needed to form the joint.

The same result is that the wrap is gripped along a first line (eg, between a pair of nippers) and at the same time along a second line (eg, between another pair of nippers), and then It can also be obtained by moving both grip lines in the direction away from each other. The distance between the gripping lines must satisfy the requirements already mentioned for the nip line of the draw roll pair. This operation also forms two prepared ends.

The preferred shape of the prepared end is shown in FIG.
A and B show. FIG. 15A shows a plan view of the end of the prepared wrap, and FIG. 15B is an enlarged view of the same seen from the side. The width W unwound from the wrap roll,
A wrap having a thickness T is shown at 250 in FIGS. The line N in FIG. 15A represents the nip or gripping line created by the roll pair 9 and the like in FIG. FIG.
Figure 3 shows a preferred arrangement in which the gripping lines are installed at right angles to the length of the wrap. The grip line may be at another angle with respect to the length direction of the wrap (eg, as shown by the dotted line), but at angles far away from a right angle, the joining operation is complicated. However, for angles other than 90 °,
Quality degradation at the joint can be further reduced.

The gripping line N is also indicated by a pair of arrows N in FIG. 15B. As shown in FIG. 15B, the desired wrap end is in the form of a thinned fiber whisker protruding from a nip line having substantially the same thickness as when the wrap is in a roll. (Compression by the gripping element is ignored. The thickness of the wrap is directly proportional to the fiber weight per wrap per unit length.) Both ends of the wrap (outgoing and incoming) In a theoretically perfect connection between the thinned portions complement each other when superimposed and provide a substantially constant thickness (weight per unit length of wrap) supplied to the nipper assembly Should be a new supply wrap. This can be easily understood from the fact that the weight per unit length gradually decreases from the nip line toward the free end as shown in FIG. 15B.

However, referring to FIG. 15A, it is virtually impossible to obtain an absolutely perfect joint over the entire width of the wrap. Thus, variations in the prepared wrap end need to be maintained within acceptable limits to obtain an acceptable joint. This absolute limit is obtained, on the one hand, by closing the combing assembly and, on the other hand, by making the wrap thin so as to be cut before or within the combing assembly.

The length L of the "prepared wrap end" (FIG. 15B) must be as predetermined in order to enable a high quality lap to be joined. A jagged end, such as that shown at 254 in FIG. 15A, is not preferred because it is not expected that the other corresponding lap end will be similarly jagged during the joining operation. It would not be possible to obtain a prepared wrap end of constant length L over the entire width W of the wrap. This effect is illustrated in FIG.
At A, this is schematically indicated by the line (fiber) protruding from the nip. This effect is caused by a difference in length of the fibers that are gripped at the nip line and firmly captured during the cutting operation.

However, the length of the wrap is influenced by the manner in which the prepared wrap end is formed, as will be explained below with reference to FIGS. FIG. 16 shows a cutting (wrap end preparation) means in the form of two pairs of nip rollers 256 and 258 in which the wrap 250 is gripped continuously before being cut. The distance D between the nip lines formed by the two roller pairs affects the wrap edge created by keeping the nip roller 256 stationary and driving the roller pair 258 in the direction of the arrow. This distance D
Must be at least slightly longer than the length of the longest fiber in the area sheet to be cut. This can prevent "holding" that results in fiber breakage or pull-out defects.

However, this distance D must not be much longer than the longest fiber, otherwise an uncontrolled or incompletely controlled fiber bundle will be formed, resulting in the jagged wrap end shown in FIG. 15A. When roller pair 256 stops, substantially all of the fibers of the sheet extending between roller pair 256 and 258 are tightly controlled by the fiber whiskers protruding from roller pair 256, or It must be neatly delivered within the fiber whiskers pulled by the pair 258. These fibers gripped in the nip of the roller pair 256 and 258 have no problem as long as they are not gripped in both nips, and the floating fibers (short fibers) remaining between the nips
Is subject to draft forces during the cutting operation (due to the "field of force" created in the fiber sheet by the nip), but must be controlled by frictional contact with adjacent fibers in the fiber sheet as it is drafted. Must. Two well-prepared wrap ends (upstream and downstream) are formed by this type of operation.

In short fiber combs, the longest fiber in the treated fiber sheet usually has a total length not greater than about 45 mm. The distance D is usually selected in a range of 60 to 120 mm, and a preferable distance is 90 mm. by this,
The length of the fiber whiskers will be between 20 and 60 mm, with a preferred length of about 40 mm. FIG. 17 shows another example of the mechanism. The fiber sheet 250 is gripped between the nipper elements 260 and 262 (similar to the nipper elements of the combing unit). If the sheet 250 extends to a pair of nip rolls downstream of the nipper 260 (similar to the roller pair 258), the idea of the nip line spacing is illustrated in FIG.
6 in the same manner as described above, except that the downstream roll pair is replaced with a pair of second nipper elements similar to the nippers 260 and 262.

However, the cutting (preparation) operation is performed by inserting the linear comb 264 into the sheet on the right side of the nip line and combing the fiber whiskers held by the nip, thereby forming the sheet on the right side of the nipper elements 260 and 262. It can also be done above. Such an operation is used to prepare the end of the incoming wrap. The comb 264 needs to be inserted into the wrap at a predetermined distance from the nip line to ensure control of the wrap end. This predetermined distance is
The distance that the fibers remaining in the fiber whisk are gripped in the nip or controlled (by the force field created by the nip) in engagement with other fibers in the sheet. The same effect exerts a very strong suction force (by the suction nozzle indicated by reference numeral 266) on the sheet end protruding from the nippers 260, 262, or treats the wrap end by a rotary comb indicated by reference numeral 265. Obtained by: The mechanism of FIG. 17 is used as a basis for the example of FIG. 11, which is an improvement on the conventional mechanism shown in FIG.

In the example shown in FIG. 11, the accumulator bar 224 is replaced by a pair of transport rolls 228 and 230, and a pressure roll 232 similar to the pressure roll 11 of FIG. A suction nozzle 234 is connected by a flexible conduit 236 to a source of negative pressure 238. The suction nozzle 234 is configured to be movable between a standby position (not shown) and an advanced position where the suction effect of the nozzle acts on the wrap downstream of the nip formed by the roller 202 and the pressure roller 232.

This device operates as follows. ─First,
By stopping the roller 202 while driving the rolls 228 and 230, the downstream side of the nip line formed by the roller 202 and the pressure roll 232 is moved to the position shown in FIG.
As described above, the wrap is pulled apart to form a prepared wrap end.操作 As mentioned above, this operation results in a prepared wrap end upstream on the wrap extending toward the roll 202 and a downstream prepared wrap on the wrap extending toward the nip element. A wrap end is formed. The latter wrap ends are the rolls 16 and 1 in FIG.
As described for No. 7, the roll pair 228, 230 is held just upstream of the nip line. The cut wrap portion with the prepared end is then rolled 228, 230
And the combing unit (feed roll 208 and cushion plate 206). Next, the wrap remaining on the old roll is removed by appropriate means (eg, by feeding the wrap into the suction nozzle 234 moved to the operating position shown in FIG. 11). The used roll is replaced with a new roll as described with reference to FIG. ─ A new wrap is supplied between the nip formed between the roller 202 and the pressure roll 232, and a suction force is applied from the nozzle 234 to the wrap end exposed from the nip, so that the fiber or the nip that is not gripped by the nip may be used. By removing fibers that are not retained by the resulting force field, a prepared wrap end is formed (as described with respect to FIG. 17). The prepared tip on the new wrap is moved down until it overlaps the pre-formed end on the old wrap that is still being gripped by the roll pair 228, 230 and the nipper assembly. . To do this, the roll 228 is preferably located at the location of the dotted line in FIG. 11, so that the prepared wrap end does not have to be deviated from a straight down motion. If the roll pair 228, 230 is in the position shown by the solid line, the end of the new wrap must be diverted from its straight down path in order to overlap the prepared end of the old wrap.接合 By restarting the supply at all points along the path from the carrier roller 202 to the feed roll 208, a joint is formed as described for FIG. In this case, the overlapped wrap ends are pressed together by rolls 228,230.

The pressure roll 232 of FIG. 11 may be replaced with a gripping bar that is pressed against the stationary carrier roller 202 to form a nip. When comparing the mechanism of FIG. 11 with the mechanism of FIG. 1, the following points should be noted.機構 The mechanism of FIG. 11 is the same as the elements 19 and 20 of FIG.
No deflecting means is required. This is because the downward movement of the incoming wrap carries the prepared end of the wrap to the prepared end of the outgoing wrap.機構 The mechanism shown in FIG.
There is no need for an auxiliary roll pair as in 14. This is because the second wrap end preparation step (on the incoming wrap) is performed by the suction device 234 in cooperation with the nip formed on the carrier roller 202.

The mechanism of FIG. 1 has two advantages. 1. First, the basic mechanism of the machine shown in FIG. 9 remains. The roll pairs 16, 17 feed the wrap horizontally on the plate 113 (FIG. 9), the elements necessary to perform the joining action being added to a real machine in the form of a superstructure. Of course, this is no longer essential if a new mechanical design is taken into account. 2. Second, the preparation of the wrap end, which is performed by pulling the wrap by the roll pairs 16, 17; 13, 14;
It gives better results than the wrap end preparation obtained by a suction device such as (FIG. 1).

FIG. 11 shows that the first wrap end preparation step (on the outgoing wrap) is performed by a pair of rolls (press rolls 16, 17 in FIG. 1) used to press the wrap ends together. Is shown. Thus, in the mechanism of FIG.
It is prepared by nipping at 3,14 and activating roll pairs 16,17 to pull the wrap apart between these roll pairs. This facilitates providing a prepared wrap end upstream of the nip of the roll pair 16, 17 to receive the prepared end of the incoming wrap. However, this, as described with respect to FIG.
There are drawbacks that complicate the overall drive system.

After performing this first wrap end preparation step, the roll pair 16, 17 must be kept stationary and the wrap must extend from this roll pair to the nipper assembly. This roll pair (pressing roll or joining roll)
Cannot participate in the second lap end preparation step. Therefore, if it is desired to use a pair of rolls to separate the wrap in the second wrap end preparation step, another pair of rolls 13, 14 must be provided. Furthermore,
If it is not allowed to increase the width of the machine, this auxiliary roll pair will be a roll pair 1 (as shown in FIG. 1).
Need to be installed above 6,17,
A deflecting means 1 is provided for superimposing the incoming wrap moved downward onto the prepared end of the outgoing wrap held by a pair of rolls 16 and 17 supplying the wrap horizontally.
9, 20 are required.

It will be understood from these descriptions that several modifications of the illustrated mechanism are possible. That is, if it is possible to expand the machine, the incoming wrap can be fed horizontally from the roller 9 to the roll pairs 16,17. However, it is not possible to reliably move the wrap end in the horizontal direction without specially provided moving means for this purpose. For example, a gripping nip of the type shown in FIG. 17 can be formed as a swinging nip (similar to a combing unit nipper).
The swinging nip can be moved substantially horizontally to bring the prepared wrap ends together. This is not a very good practice, but it is possible.

Instead of the infeed plate 113,
Roll pairs 16, 17 (as shown schematically in FIG. 1) may be provided in the connection areas of the plates 113, 114 (FIG. 9). Other gripping nips may be provided in the supply area to the plate 113. Again, the means necessary to convey the prepared end of the incoming wrap through a horizontal path from upstream to the roll pair 16, 17 would be necessary.

Third, the roll pairs 13 and 14 can be omitted, and the carrier roller 9 and the pressure roll 11 (FIG. 1) can be used using a suction nozzle (similar to the nozzle 234 in FIG. 11) or a comb. The end of the incoming wrap held in the formed nip can be provided. If it is necessary to transmit the driving force to an element that is not fixed to the machine frame (for example, the roll 228 in FIG. 11) during normal operation, practical difficulties arise. However, in response to a signal that the laps need to be joined, from the standby position to engage the guide rolls 228,
By moving the paired second rolls 230, it is possible to form the gripping nip only when performing the lap joining operation. A driving force is applied to the second roll, and the second roll is transmitted by friction to a guide roll 228 that is only rotatably supported around its own axis.

When the drive roll 230 returns to its standby position during normal operation, the guide roll 228 swings freely, as required by normal machine operation. The drive contact between the drive roll and the guide roll is broken as soon as the joined wrap ends pass through the nip formed between the joining roll or the pressing roll. In all embodiments, the feed rolls 110 (FIG. 1); 208 (FIG. 1) after the bonded wrap ends have left the bonding roll pair.
It is desirable to provide "channels" that need to be passed when passed to 0). This channel provides a guide surface towards both sides of the wrap. Suitable channels are formed by modifying the plates 113, 114 of FIG. 9 as shown in plates 313, 314 of FIG. As the joined wrap end moves toward the feed roll, the (partial) "covering" of this joined end
Reduces the risk of the (relatively) weakly bonded areas of the fiber sheet being pulled apart.

FIG. 13 shows a modification of the wrap roll carrier. In this case, the axis of the roller 10 (FIG. 1)
The pusher 30 is fixed to the machine frame and pushes out the consumed roll core from this carrier unit.
0 is provided. In this case, the piston / cylinder unit 23 acts on the pusher 300 instead of the support of the carrier roller 10.

FIGS. 14A, 14B and 14C show various examples of the wrap end detecting mechanism. In each case the coil outside the wrap on the roll is shown schematically. These mechanisms can be used when it is desirable to provide a perforated roller as the carrier roller 9 (FIG. 1). In FIG. 14A, a mechanical scraper 302 is used to remove the wrap end from the roll as the roll is rotated by a carrier roller. The scraper 302 extends over the entire width of the wrap roll, and when a new wrap roll is placed on the carrier unit, in response to a signal from the control unit (as shown in FIG. 5) (eg, by the piston / cylinder unit 304). Move toward the roll surface. The free end of the scraper has a recess.

FIG. 14B shows a perforated tube or nozzle 304 that is used to generate an airflow over the roll surface to remove the wrap end. This air flow is generated by compressed air or suction. This tube 304
Can be moved to a predetermined position (from a standby position (not shown)) for the lap end detecting operation. This tube or nozzle extends over the entire width of the wrap roll.

FIG. 14C shows a roller 306 with a radially extending arm 308 that can move toward the surface of the roll to remove the wrap end. The roller 306 may be carried on a swing arm (not shown) movable between a standby position (not shown) and an operating position shown. In the operating position, the roller is rotatable about its axis. The roller 306 also extends over the entire width of the wrap roll.

FIG. 18 shows a schematic diagram of a drive system suitable for the mechanism as shown in FIG. In this mechanism, the lower joining roll 17 is driven by a comber drive system instead of a wrap carrier roll (FIG. 9) integrated with the comber drive system. Therefore, roll 1
7 is directly linked to the operation of the combing unit by a conventional comber control system.

An auxiliary drive system for the auxiliary elements involved in the lap joining operation, namely the carrier unit with the carrier rollers 9, 10 (and the pressure roll 11) and the transport or wrap end preparation rolls 13, 14 is provided. Is provided. A first auxiliary motor 340 is provided (e.g., at the end head) and is coupled to a gear 344 associated with rollers 9 and 10 by a suitable transmission mechanism (e.g., toothed belt 342). A second tension roll 346 is provided to maintain the belt tension.
An auxiliary motor 348 is also provided on the end head, and via a toothed belt, the lower roll 14 of the roll pair 13,14.
Are connected to a gear 352 that cooperates with the gear. Roll 14,
17 is formed as a cylinder extending along the entire length of the machine (ie cooperating with all the combing heads on one side of the machine).

The driving mechanism shown in FIG.
And activating the laps 13 and 14) in a preferred embodiment in which the lap end is prepared by means of an auxiliary drive and incorporated in a normal mechanical drive system to carry out the lap joining operation, ie the joining operation is carried out by means of the drive of the combing unit. is there. The rolls 11, 13, and 16 are formed so as to be suitable as pressure rolls, and are not directly driven but are supported so as to be rotatable about their own axes. Such a set of pressure rolls is provided for each combing head. That is, these rolls do not extend the full length of the machine, but are each associated with a respective combing head. Three pressure rolls 11, 13, 1
6 is mounted on a common support frame 54 that is pivotally supported on a fulcrum 356 on the machine frame. The support frame 354 pivots up about a fulcrum 356, moving the pressure roll away from its drive cylinder and allowing access to the lap's path of motion for servicing the combing head.

19 and 20, the same reference numerals are used for the same parts as those described above, but this comb is formed by a pair of pressing rollers 16, 17, a pair of conveying / lap end preparation rollers 13, 14, and another pair. And a pair of conveying rollers 11 and 9, one of which is also used as a wrap roll carrier roller. The second wrap roll carrier roller is shown at 10. The drive mechanism for this is schematically shown in FIG. 18 and comprises a motor 340 for driving the carrier rollers 9 and 10 and a motor 348 for driving the transport rollers 14. These motors are designated by reference numeral 360.
Are added to the main comb drive unit indicated by. The drive unit 360 operates the combing assembly (not shown in FIG. 19) and the pressing rollers 16 and 17. The pulse signal generator 362 is connected to the roller pair 16,
17 is included in the driving force transmission mechanism. This generator 362 sends a signal to the central controller 364, whereby the main comb drive unit 360 and the auxiliary drive unit 34 when necessary (for example, during normal operation of the comb).
Synchronization with 0,348 is ensured.

FIG. 19 shows exclusively the drive mechanism and its integration into the overall control system. As already mentioned with reference to FIG. 18, the rollers 17, 14, 9, 10 extend along the complete row of combing heads (in the case of a one-sided machine). Alternatively, in the case of a double-sided machine base, the machine extends along at least one of the two rows of the combing heads. On the other hand, FIG. 20 shows a sensor associated with each combing head. Each combing head has two sensors, a first sensor 366 for detecting the presence or absence of a wrap on the bobbin 8a supported by the carrier roller 9.
And a second sensor 3 for detecting the presence or absence of a wrap on a path extending between the roller pairs 13, 14 and 16, 17
68 are provided.

The operation of this system will be apparent from the timing diagram shown in FIG. Section A in FIG. 21 shows a change in the state of the drive unit 340 with respect to the transport rollers 13 and 14 during the time period in which the lap joining operation is performed. Section B shows the state of the drive unit 348 with respect to the carrier rolls 9 and 10 in the same time zone. Section C represents the state of the drive unit 360 with respect to the comber (particularly, the joining roller pair 16, 17) in the same time zone. Finally, the sections D, E, F and G are respectively the operating state of the deflecting elements 19 and 20 (FIG. 1), the operating state of the bobbin discharge means 23 (FIG. 1) and the vacuum source 370 for the suction removal system 26. And the operating state of a vacuum source (not shown) for the lap end searching device shown in FIGS. 1 and 19 by means of the perforated carrier roll 9.

At time T 0, the comber is in a normal operating state and all drive units 340, 348, 360 are driven and supply laps for combing at a rate determined by main drive unit 360. This speed is controlled via control system 364 (eg, manually).
It depends on the setting input to the comba. The drive units 340 and 348 are operated in synchronization with the drive unit 360 by an output signal from the generator 362 and a control signal supplied from the control unit 364 to the drive units 340 and 348. The other elements whose operation status is shown in the diagram of FIG.
Does not work.

At time T 1, one of the sensors 366 detects the end of the wrap of the combing head and sends a corresponding signal to the central control unit 364. The control unit 364 immediately cancels the synchronization of the drive units 340 and 348 with the drive unit 360 and directly controls the operating speed of all motors. After a slight delay,
The control unit 364 stops the drive unit 340,
The carrier rollers 9 and 10 are stopped. Since the drive units 348 and 360 are in operation, the now-stopped roller pair 9 and 11 and the rotating transport roller pair 1
Between 3 and 14, the wrap is cut.

After a predetermined time delay t, the control unit 36
4 stops the main drive unit 360, thereby stopping the entire combing head, especially the joining rollers 16,17. This time delay t can be set to be adjustable, so that the preparatory wrap end created by the cutting operation is used for the subsequent joining operation by the joining rollers 16,
17 is correctly positioned.

At time T3, the control unit 364
Restarts the drive unit 340 for the carrier rollers 9, 10, as shown in sections A, B of FIG. The carrier rollers 9, 10 and the transport rollers 13, 14 are accelerated until they reach a relatively high speed (up to a speed higher than the normal operating speed of these rollers), and the rest of the wrap is removed as quickly as possible through the suction system 26. So that The suction system itself has been activated beforehand, preferably when the carrier rollers 9, 10 first stop.

The operation of the drive units 340, 348, which supply the rest of the wrap into the suction removal system 26, causes all sensors 368 (FIG. 20) to inform the control system 364 that no wrap can be found within the detection zone. Continue until you do. Therefore, the control unit 364 controls each sensor 3
Remembering the state of 68 and proceeding to the next stage of the lap splicing operation only when the proper signal is received from the last sensor detecting that the lap is still present in the combing head. Need to be able to When this last lap end is detected at time T4, the control unit 364 switches off the drive unit 340 for the carrier rollers 9 and 10 and turns off the transport rollers 13 and 1.
4 to normal operating speed.

In the following short time, the device 23 (FIG. 1) is operated to eject the empty wrap bobbin 8a, and new wrap rolls are placed on the carrier rollers 9, 10. This effect is not shown in FIG. This is because it is initiated by the control unit 364 of the comber, but the movement of the incoming wrap roll is determined separately by the control unit of the transport system. While the new wrap roll is being placed in place by the transport system, the comber itself does not operate. However, since this time is very short, the transmission of power to the transport rollers 13 and 14 is continued.

At time T5, the transport system informs the control unit 364 that it has been placed on the carrier rolls 9 and 10 at each combing head under the control of the unit 364. This unit then restarts the carrier rolls 9, 10 so that a lap end search operation can be performed, as described with respect to the previous figures. For this purpose, a suction force is applied to the perforated roller 9 (section G in FIG. 21). The drive unit 340 for the rollers 9 and 10 starts the control unit 364 at time T6.
Will be driven until the last sensor associated with the is notified that a new lap has been found in its detection area. by this,
The comber is ready for the second wrap end preparation step.

That is, at time T6, the control unit 36
Reference numeral 4 switches off the drive unit 360 again to operate only the transport rollers 13 and 14. As a result, the new wrap is cut between the roller pair 13, 14 and 9, 11 and the separated part is still in operation of the suction system 2.
6 immediately removed. The second lap end preparation step is now complete, and the prepared end of the new wrap can now be advanced to overlap the prepared end of the old lap, which has been previously placed on the joining rollers 16,17. Required.

Wrap edge preparation step (including removal of waste material)
After a predetermined time delay (not shown in the figure) sufficient to perform the drive, the drive unit 340 is restarted at time T7 to advance the prepared lap end to the joining rollers 16,17. At about the same time, the deflecting means (FIG. 1) operates as shown in section D of FIG. After a selectively adjustable time delay, the drive unit 34 at time T8
0 and 348 are de-energized by the control unit 364 and the advance of the new wrap end is stopped when the new wrap end is correctly positioned for joining with the old wrap end. Adjusting the time delay at this stage allows for accurate lamination of both wrap ends.

After a very short time delay before the drive unit completely stops, the comba drive unit 360 is restarted at time T9. At the same time, the signal generator 3
62 to the auxiliary drive unit 3 via the control unit 364
The synchronization control link reaching 40,348 is again formed,
The auxiliary drive unit starts to operate again in synchronization with the main drive unit 360. All of these drive units are accelerated synchronously until normal operating speed is reached, and then remain in this state until the next joining operation is initiated by one of the sensors 366 (FIG. 20).

The deflecting means 23 (FIG. 1) returns to its standby position some time after the normal working state has been re-established and maintains the machine in the predetermined standby state for the next joining operation.
However, the timing of this step need not be so exacting, because the deflection plate 19 does not interfere with normal operation. This deflection plate 19
At this point, the control unit 364 deactivates the suction system 26.

The above description illustrates FIG. 21 in terms of a time diagram, corresponding to the manner in which timing means are used to initiate each operating step and control the movement of the prepared lap end. However, it is also possible to use a pulse signal indicating the moving distance of the lap end without using time as a control parameter of the function relating to the control of the movement of the lap end. For example, with respect to the first preparation lap end (of the old lap), it is possible to control the positioning of the prepared lap end with respect to the joining rollers 16 and 17 using a pulse emitted from the signal generator 362. is there. Then, the main drive unit 360 continues to operate until the control unit 364 counts a predetermined number of pulses after the cutting operation is started. In this way, the problem that the positioning speed of the preparation wrap end depends on the operating speed of the comber can be solved. These problems occur when the optimal setting is made with a time delay t.

The second timing operation (time T7 to T8) for positioning the lap end is to use a stepping motor as the auxiliary driving units 340 and 348 and supply an operation pulse under the control of the unit 364. Can be omitted. 22 to 27 show the basic structure and operation steps of another embodiment of the lap bonding apparatus for combs of the same type as shown in FIG.
In particular, the mechanism shown in FIGS. 22-27 is intended to use a wrap motion path with a "bend" 380 formed by a pair of guide plates 113, 114 (FIG. 9). The apparatus of FIG. 22A includes a pair of wrap roll carriers 382, 384 and a pair of joining rollers 38.
6,388. The joining roller is provided at a supply end of a horizontal path portion extending to the curved portion 380.

This device comprises an auxiliary guide plate 3 which covers at least part of the path of the lap from the joining rollers 386, 388 to the feed rollers (not shown) of the combing assembly (not shown in FIGS. 22 to 27).
It has 81. The device further comprises a suction head 390 connected by a suitable tube (not shown) to a vacuum source (not shown). This head 390
From the front carrier roller 382 to the joining roller 38
It is provided at a position below the wrap that moves between 6,388. However, in the normal operating state (shown in FIG. 22), the carrier roller 382 and the roller pair 386,
388 extending between the wrap portion 385 and the wrap portion 385 shown in FIG.
A guide plate 392, shown in greater detail, isolates the suction head 390.

As shown in FIG.
Is rotatably mounted on a rotating shaft 394 parallel to the axis of the roller 382 at an edge closest to the carrier roller 382. A piston / cylinder unit 396 is provided between the plate 392 and the machine frame 398, and the guide plate 392 is moved to the operating position shown in FIG.
B is indicated by a solid line) or the standby position indicated by a dotted line in FIG. 22B. In the latter position, the carrier roller 382 and the roller pair 386,
388 is exposed to the suction head 390.

The suction head 390 has a special structure as shown in FIG. 22B. The mouth portion of the suction head comprises a fixed wall 400 with a lip 402 and a movable wall 404 pivotally supported by a shaft 406 on the head structure body, the latter having a lip 408 at its outer end. Appropriate operating means 4
By means of 10, the movable wall 404 is pivoted about the axis 406 to move the lip 408 in the direction of the perspective relative to the lip 402, forming a gripping nip that can be opened and closed at the mouth of the suction head. As can be seen from the description of the figures that follow, another means (not shown) that can be controllably adjusted to move the entire suction head 390 relative to the other elements.
Is also provided.

From one of the combing heads (for example, FIG.
When a signal is issued indicating that the wrap has been consumed (from the sensor 366 described on the basis of 0,21), the drive unit for the roller pairs 386,388 is deactivated, while the drive units for the carrier rollers 382,384 are stopped. Drive units continue to operate. The plate 392 pivots from its normal operating position (FIG. 22) to a standby position (FIG. 23),
The loop 412 of the wrap formed between the roller 382 and the roller pair 386, 388 is taken into the suction head 390, and a suction force is applied thereto. At this point head 3
The wall 404 of the 90 rotates and the mouth part of the suction head
It is opened so that the double-thickness wrap can be sucked.

After the appropriate length of the loop portion of the wrap has been taken in by the suction head 390, the drive unit for the carrier rollers 382, 384 stops and the wall 40
4 rotates to move the lip 408 to the gripping position with respect to the lip 402. Then, the suction head 390 moves far from the rollers 388 and 382 as shown by an arrow D in FIG. The looped portion of the wrap held in the gripping nips 402 and 408 in the suction head includes a roller pair 386,3
It is separated from the wrap extending through 88 to the combing head (not shown) as well as the remaining wrap extending upstream beyond the rollers 382. Observing the conditions described with respect to the preceding figures, it is thus possible to form a properly prepared wrap end on the wrap extending to the combing head. Suction head 3
Reference numeral 90 designates a roller 386, 3
It also has the function of separating the wrapped portion between the wraps 88 and pulling out the floating fibers from the wrapped ends held by the rollers 386, 388 to form a prepared wrapped end suitable for the joining operation. By properly selecting the mutual dimensions of the parts, the need to reposition the prepared wrap ends relative to the joining rollers 386, 388 is eliminated.

Next, the mouth portion of the suction head 390 is opened to enable the removal of the waste material from the grip nips 402 and 408. The remaining wrap 415 extending upstream beyond the carrier roller 382 also
If the 384 is restarted, the head 39 that continues suctioning
Removed by 0. In another preferred embodiment, the supply of loop wrap to suction head 390 comprises:
This continues until all wraps have been removed from the empty bobbin 414. Accordingly, when the nips 402 and 408 are closed, the roller pair 386 and 38
Only one thickness of the remaining wrap extending to 8 is gripped. Next, the cutting of the wrap of this part and the formation of the prepared wrap end are performed as described above. According to this apparatus, since the remaining wrap is removed prior to the execution of the wrap end preparation step itself, it is necessary to restart the carrier rollers 382 and 384 after the wrap end preparation step simply to remove the remaining wrap. Obviously not. Complete removal of the remaining wrap is signaled by a sensor 381 having a detection zone that includes a carrier roller 382.

Next, the empty wrap bobbin 414 (FIGS. 22 to 24) is flipped out and replaced with a new wrap roll 417 as described above. Then, the suction head 39
0 is a carrier roll 382 and a joining roller pair 386, 38
8 to the pick-up position and accept the end 419 of the new wrap. In this position, the suction head 390 can cooperate with other wrap-end search elements, as already described with reference to the other figures. An appropriate sensor (not shown) for detecting the presence or absence of a lap on the bobbin is provided along the bobbin in front of the suction head 390, and checks whether or not the lap end search operation has been successful. Then, the drive units for the carrier rollers 382 and 384 are stopped again, whereby the gripping mechanism of the mouth portion of the suction head 390 is operated to grip the found lap end. The head itself is a carrier roller 38
2 and the roller pair 386, 388 (FIG. 26). During this movement, the new wrap is cut just upstream of the gripping nips 402, 408, and the new tip 416 of the new wrap is properly prepared for joining with the end 413 of the old wrap that has already been prepared. Is done.

The device 396 (FIG. 22B) is restarted and returns the guide plate 392 to its normal operating position (FIG. 2).
7). The prepared tip 416 of the new wrap is parked in place for joining with the prepared end of the old wrap. Then, the gripping nips 402 and 408 are opened, the waste material is removed by suction, and then the suction is stopped.
As a result, the carrier rollers 382 and 384 are restarted, and the leading end 416 of the new wrap is moved to the roller pair 386 and 38.
8 into the nip. At the same time, the roller pair is restarted and the prepared wrap ends are stacked in the nip of the joining roller and pressed firmly. Then
The joint follows the normal path through the bend 380 to the combing assembly as previously described.

FIG. 28 shows a modification of the mechanism shown in FIGS. In this mechanism, a pair of joining rollers 386, 38
8 are provided in the bend 380, and the wrap leaving these rollers immediately enters the combing assembly (not shown) downward. Otherwise, this mechanism is the same as that of FIGS. However, in this case, the lower joining roller 388 needs to swing in synchronization with the operation of the combing assembly, and therefore,
This lower roller is desirably provided as a driven roller that is driven only when it comes into contact with the upper roller 386. The upper roller is separated from the lower roller 388 when the joining operation is completed.

FIG. 29 shows a guide plate 329 (FIG. 22).
1 shows an embodiment of a mechanism for moving B). In this mechanism, the plate 392 includes a joining roller 386,
388 are carried by a pair of levers 391 and 393 which can rotate about a common shaft 395 in front of them. The guide plate 329 rotates about this axis, and moves between a first position (solid line) and a second position (dotted line) where the guide plate 392 guides the material to the joining roller. In the latter position, the suction head 390 moves the carrier roll 382,
The material supplied from 384 can be picked up and moved to the wrap end search position as shown in FIG. When the guide plate 392 returns to the first position, its leading edge reaches a position very close to the joining roller 388 and safely places the new wrap end on the already prepared old wrap end.

FIGS. 30-32 show another mechanism for separating the wrap to form a prepared wrap end. In this case, the joining rollers 440, 442 form a stationary gripping nip for gripping the wrap, which is separated by the reversal of the carrier rollers 444, 446. Rollers 440, 442 may be replaced by gripping nips in the form of a pair of nipper elements that close immediately prior to the wrap end preparation step. In this case, the prepared wrap end 447 is placed on a guide plate 443 fixed between the carrier roller 444 in front and the pair of joining rollers 440 and 442.

Since the weight of the empty bobbin 448 placed on the carrier rollers 444 and 446 is insufficient, the roller 4
If the 44, 446 is reversed, this will not be effectively transmitted to the wrap, which may cause the wrap to shrink or separate upstream of the roller pair 440, 442. For this purpose, pressing means is provided to keep the bobbin itself rotatable about its axis while rotating the empty bobbin 448 with the rollers 444 and 446.
Is desirably pressed downward. As a result, the bobbin 448 forms a nip with the front carrier roller 444, and the wrap is pulled back by the reverse rotation of the roller 444, so that a desired cutting operation can be performed.

FIG. 31 shows a pair of carrier rods 452, 4
A pressing means in the form of 54 is shown, each of which is rotatably connected at one end to a connecting rod 456 of a bidirectional piston / cylinder unit 458. Each carrier rod 452, 454 has a support 46 between its ends.
0, and a pair of wrap carriers (only one roller 464 is visible in FIG. 31) for supplying material to the combing head adjacent to the wrap carrier rollers 444, 446. It is fixed to the machine frame 462 between the rollers. Each rod 45
2,454 has a roller 466 rotatably mounted at its free end.

When the piston / cylinder unit 458 operates in one direction, the rods 452, 454 move to an inoperative position (dotted line) that does not interfere with the associated combing station's empty bobbin 448 (which may have residual wrap). . However, as one step for bringing the comber into the joining operation state, the unit 458 operates to operate the rod 45.
2,454 to the operating position (solid line), where each roller 466 engages the inner surface of the associated empty bobbin 448 and depresses it to release each carrier roller 444,446.
Or 464, which creates a strong driving contact between the bobbin and the carrier roll, thereby pulling back the remaining wrap (not shown) and joining rollers 440,
Form a gripping nip that causes a cut upstream of 442. Each bobbin 448 has one pressing roller 466 at each end.

Of course, the pressing means may apply a force to the outside of the bobbin 448, and may apply a pressing force by a new wrap on the old bobbin. However, it is preferred to provide a device that is controlled directly by the motion control of the comber and is located at a location that does not interfere with the incoming wrap. The remaining wrap portion cut from the old wrap extending to the combing assembly via the joining rollers 440, 442 is provided by a suction device having a suction head 470 (FIG. 30) provided adjacent the rear carrier roller 446. Carried away. To this end, the carrier rollers 444, 446 continue to reverse until the cut end of the wrap remaining portion moves past the mouth of the suction head 470, and is then reversed again to rotate in the normal supply direction. . When the cut end of the wrap remaining portion is pulled back beyond the mouth portion of the suction head, the wrap end is
The air is separated from 48 and enters the suction head by an air current generated by the suction force. The rotation of the bobbin is continued in the normal supply mode until the appropriate sensor confirms that all remaining parts have been removed into the suction head.

The emptied bobbin 448 is first placed in the unit 4
The pressing roller 4 is released by the action of 58 (FIG. 31).
66 is retracted and then flipped out by a suitable mechanism (as described above). A new wrap 480 (FIG. 32) is placed on carrier rollers 444 and 446 by the transport system described above. The new wrap 480 has its free end 482
Seeing from the normal rotation direction of the wrap for feeding the material into the combing head (ie clockwise in FIG. 32)
It is positioned upstream of the rear carrier roller 446 and at a position close thereto.

The carrier rollers 444 and 446 are rotated in the normal supply direction, and the free end 482 is
The paper is conveyed so as to coincide with the suction head 470 receiving the negative pressure from 84. The free end of the wrap is peeled from the wrap by the suction airflow and drawn into the suction head 470. The suction head 470 has a mouthpiece that can be opened and closed with a lip 486 on a portion 488 connected to the head body by a flexible piece 490, similar to the suction head 390 described with reference to FIG. 22B. A piston / cylinder unit 492 is provided to open and close the mouth, thereby opening and closing a gripping nip formed between the lip 486 and the head surface facing the lip.

The manifold 484 is carried on a link 494 that can rotate about the axis of the rear carrier roller 446. When the free end of the wrap is taken into the suction head 470 (this time can be detected by a suitable sensor (not shown) in the suction head), the carrier roller 44
4, 446 are stopped, the gripping nip of the mouth portion of the suction head 470 is closed by the action of the unit 492, and the manifold 484 is rotated (in FIG. 32) counterclockwise around the axis of the roller 446. The wrap portion held in the gripping nip of the head 470 is separated from the fiber whiskers protruding from the nip formed between the body of the wrap roll itself and the rear carrier roller 446. FIG. 15A
With the precautions necessary for the preparation of the wrap end already described with reference to FIGS. 15B and 15B, the appropriately prepared wrap end is formed on the new wrap.

The wrap 480 is (carrier roller 444,
It is again rotated in the normal supply direction (by rotating 446) to move the prepared wrap end to a position immediately downstream (as viewed from the normal supply direction) of the front carrier roller 444. A wrap end search device indicated by reference numeral 495 is provided to peel off the newly prepared wrap end from the wrap body.

Next, the found wrap end is dropped onto a guide plate 443, on which the previously prepared old wrap end rests, as already described with reference to FIG. The new wrap end is peeled off from the wrap body and placed on plate 443 with the old wrap end facing down on plate 443, and when the system is restarted, the stacked wrap ends are joined by joining rollers 440, 442.
A mechanical device (not shown) is provided to assist in the inward movement. Subsequently, a normal combing operation is performed.

According to FIG. 33, the pressing means for pressing the wrap bobbin 448 against the wrap carrier roll 464 (only one roll is visible in FIG. 33) comprises a pair of rollers 475. As shown,
Rollers 475 are independently mounted one at each end of bobbin 448 when the bobbin occupies a normal position on carrier roll 464. Each roller 475 is carried by a piston (not shown in FIG. 33) of a respective piston / cylinder unit 472, which unit 472 pulls each roller 475 into a retracted position (solid line position in FIG. 33) and an extended position (dotted line). Shown).
Each roller 475 is rotatably mounted on a rod (not shown in FIG. 33) that connects it to the associated piston and is rotatable with the other rollers about a common axis of rotation. Each roller 475 has a frustoconical end 474 that engages an inclined surface 487 at the end of the bobbin 448.

As shown in FIG.
4 may be grooved. When the pressure roller 475 enters its extended position, the contact with the inclined surface 487 pushes the bobbin 448 down and presses against the grooved roll 464, causing appropriate frictional contact to rotate the roller 475 with the bobbin 448. FIG. 34 shows a modification of a pair of joining rolls 440, 442 provided with a means for moving the upper roll 440 between an active position where both wrap ends are pressed and an inactive position. In the illustrated mechanism, this moving means moves the upper roll 440 to a retracted position (shown by a solid line) and an extended position (inactive position, shown by a dotted line).
Piston (not shown) of piston / cylinder unit 489 connected to roll 440 to move between
Having. When in the active position, the upper roll 440
Forms the nip required for wrap end preparation and wrap end joining. The upper roll 440 returns to the retracted position when these operations are completed.

The lower roll 442 is driven by an appropriate means (not shown) and can freely rotate on its support. The drive unit for lower roll 442 may be switched off when upper roll 440 retracts. Thus, the lower roll 442 functions as a mere guide. In the embodiment shown in FIG. 32, when the rolls 444 and 446 are rotated again in the reverse direction, and the end of the new wrap is supplied to the suction device 470 and is gripped by the new wrap, the new wrap is rotated. , Manifold 4
No rotation of 84 is required. Of course, the wrap end preparation step can be performed on a new wrap by rotating the manifold 484 and simultaneously rotating the rolls 444 and 446 in reverse.

FIG. 35 schematically shows the present invention applied to another type of wrapping machine known as a ribbon wrapping machine. This machine is used to make wraps that are fed to combers. This ribbon wrapping machine is the second of a pair of combing preparation machines.
A first machine (sliver wrapping machine) which converts the feed sliver into wraps, and a second machine (ribbon wrapping machine) which wraps the resulting wraps by drafting and doubling to make them suitable for combing. To finish. Accordingly, there is a need for a suitable joining system that can automate the operation of a ribbon wrap machine. For details on this ribbon wrapping machine, see the Zolt
described in an S. Szaloki book.

As shown in FIG. 35, a typical ribbon wrapping machine includes a pair of carrier rolls 500 and 502 which are substantially the same as those indicated by reference numerals 444 and 446 in FIG. A full wrap 504, shown in dashed lines, set on a ribbon wrap machine to be processed is formed on a bobbin 506, which remains on the rolls 500, 502 when the supply wrap is consumed. ing.

Normally, the guide plate 508 is installed between the wrap carrier unit 510 and the wrap processing unit which is a draft unit 512 in this machine. This draft unit consists of a back roller pair 5
14. Delivery roller pair 516 and middle roller pair 51
It comprises three draft zones formed between 8,520. The set of upper and lower draft rollers is a cleaning belt 5 each.
22, and the belt is wound around a guide roller 526. The movable cleaning belt collects lint on the roller surface farther from the gripping area of each roller pair.

After leaving the draft unit 512, the drafted wrap is doubled with a similarly drafted wrap at an adjacent draft head, and the doubling wrap is a wrap roll forming unit (not shown).
Supplied to The operation of such a machine is irrelevant to the present invention and will not be described in detail. The normal mechanism shown in FIG. 35 is modified as follows to enable operation according to the present invention.

1. A wrap bobbin ejection mechanism 534 (FIG. 6) cooperates with the wrap roll carriers 500 and 502, for example, as shown at 23 in FIGS. 2. A pair of joining rollers 530 (FIG. 6) similar to the rollers 386, 388 of FIG. 22 or the rollers 440, 442 of FIG. 30 are provided. 3. A wrap end preparation device is provided to prepare and position the end of the outgoing wrap just upstream of the joining roller. (This device may be in the form of a suction unit 532 of FIG. 6, such as unit 390 of FIG. 22, or may use an empty wrap bobbin to remove the nip as described with respect to FIGS. 31 and 33. Means for forming may be provided.) A wrap end preparation device is provided to prepare the end of the incoming wrap. (This device may be the device 532 described in point 3 above or another wrap end preparation device such as unit 470 in FIG. 30.) The ribbon wrap thus modified We believe that the lap splicing operation for the machine is the same as that already described for the comber and that it is not necessary to repeat the procedure or drive / control sequence.

FIG. 36 shows the auxiliary element 53 as an example.
Although a mechanism with 0,532,534 is shown, it goes without saying that a wide range of modifications is possible as described above.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a combing head of a comber at the head.

FIG. 2 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 3 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 4 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 5 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 6 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 7 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 8 is a detailed view of various parts of the comber of FIG. 1 in various positions and operating states.

FIG. 9 is a schematic view of a combing head of European Patent Application No. 89105756 for comparison with the present invention.

FIG. 10 is a schematic diagram of a combing head of US Pat. No. 3,479,699.

FIG. 11 is a schematic view of an example in which the combing head of FIG. 10 is modified based on the present invention.

FIG. 12 is a first modification of the device shown in FIGS.

FIG. 13 is another modification of the example shown in FIGS.

14A, 14B and 14C show three specific examples of the wrap end detecting mechanism shown in FIG.

FIGS. 15A and 15B are diagrams illustrating the preparation of a wrap end necessary (or at least desirable) for performing lap joining according to the present invention.

16 shows a first example of a mechanism for preparing the wrap end shown in FIG.

17 shows another example of a mechanism for preparing the wrap end shown in FIG.

18 shows a schematic diagram of a drive system for the device of FIG.

FIG. 19 schematically illustrates the elements of the control system of the drive mechanism of FIG. 18;

FIG. 20 shows the same system with another element of the control means.

FIG. 21 shows a time sequence used to describe the control system shown in FIGS.

FIG. 22A is a simplified embodiment similar to FIG. 1 applied to a comb of the same type as the mechanism of FIG. 1 in a normal operating state, and B is a detailed view thereof.

FIG. 23 is the same view as FIG. 22 showing the system in a first stage of wrap end preparation for the next lap joining operation;

FIG. 24 is a view showing a state at the end of a preparation stage of the first wrap end.

FIG. 25 shows a wrap end preparation step after a new wrap roll is placed at a predetermined position.

FIG. 26 illustrates a second wrap end preparation stage following detection of a new wrap end.

FIG. 27 shows a joining step in which both prepared wrap ends are brought together.

FIG. 28 shows another modification of the mechanism of FIG.

FIG. 29 shows a variation of the device shown in FIG. 22B.

FIG. 30 is a side view of another embodiment.

FIG. 31 is a side view of another embodiment.

FIG. 32 is a detailed front view.

FIG. 33 shows a pressing mechanism for the carrier of the present invention.

FIG. 34 shows another example of a pressing mechanism for a carrier.

FIG. 35 shows another type of wrap processing apparatus of the present invention known as a ribbon wrap machine.

FIG. 36 shows a variant of the device of FIG.

[Explanation of symbols]

 1-5 Combing element 7 Wrap 8 Wrap roll 8a Bobbin 9,11 First pair of transport rollers 12,15,18 Driving means 13,14 Second pair of transport rollers 16,17 ... Press roller pair 19 ... Slide 20 ... Piston / cylinder unit

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Freddie Bichtelmann, Zecher-8307 Effletikon, Batstrasse 17 (72) Inventor Oliver Büst, Zehr-8472 Zosach, Switzerland Gradienstrasse 29 (72) Inventor Helmut Langer Zeehar-8600 Dubendorf, Switzerland 7 Grossachstrasse 7 (72) Inventor Heinz Clement Switzerland, Zeehar-8406 Bintel Tools, Inbannen 12 (56) References JP 58-10496 (JP, B2) Jiko 43-9470 (JP, Y1) (58) Field surveyed (Int. Cl. ⁶ , DB name) D01G 23/00 D01G 19/08

Claims (25)

(57) [Claims] 1. A lap processing machine, a lap exiting extending toward the lap processing unit, a method of joining the incoming lap, Shi pull out the rear end of the outgoing lap , pull out the distal end of the incoming lap, joined by overlapping both the lap end and supplies the bonded wraps the lap processing unit, Ri Do from each step, the lead steps and wrap the tip of the lap rear end Withdraw
At least one of the steps
Per unit length of wrap at the wrap end
A method comprising the step of reducing weight . 2. A step of pulling out the rear end of the wrap and
The method of claim 1 in which each step of the extraction step flop tip comprises a gradually reduced to process the fiber weight per unit length towards the free end of the lap. 3. A method of joining laps in a lapping machine, comprising: a pair of nip lines that separate an outgoing wrap extending toward a lapping head by a distance greater than a longest fiber length of the lap. And tearing the wrap between the nip lines so that at least one fiber weight per unit length is gradually reduced toward the free end on the wrap extending toward the lap processing head. Forming the trailing end of the two drawn wraps, then gripping the incoming new wrap extending from the rollers along a pair of nip lines separated by a distance longer than the longest fiber length of the wrap Tearing the new wrap between the nip lines and cutting the tip of at least one withdrawn wrap with decreasing fiber weight per unit length towards the free end on the new wrap. After that, the two wrap ends are overlapped with each other, and the overlapped wrap ends are pressed to form a joint having a fiber weight per unit length equal to the fiber weight per unit length of each wrap. A method that includes each step. Wherein one of said nip lines is moved away from the other nip line, The method of claim 3 that is configured to tear the respective lap therebetween. 5. The distance between the nip lines is 60 to 120 mm.
4. The method of claim 3 , wherein 6. A method for joining laps in a lapping machine, comprising gripping an outgoing wrap extending toward a lapping head along one nip line, wherein The extending wrap is cut upstream of the nip line while combing to form a trailing end of the wrap with decreasing fiber weight per unit length toward the trailing end, extending from the roller Gripping the new wrap along a second nip line, cutting the new wrap extending from the nip line downstream of the nip line while combing the unit, and unit lengths toward the tip Forming a leading end of the wrap with progressively less fiber weight per edge, and then the incoming new extending from the roller along a pair of nip lines separated by a distance longer than the longest fiber length of the wrap Good rap Method comprising the steps of lifting. 7. The method according to claim 6 , wherein the combing of each wrap end is performed under the effect of suction. 8. At least one lapping head having a lapping unit, carrier means for supporting a roll of laps to be treated, and an outgoing wrap extending towards said lapping unit. means for positioning the means for forming a La <br/>-up end to a portion, the drawn lap end is supported by the upstream side of the lapping unit said portion of the lap leaving in place And a means for forming a drawn-out wrap end on an incoming wrap, and means for aligning the drawn-out wrap ends and supplying the same to the wrapping processing unit for joining. machine. 9. At least one lap processing head having a lap processing unit, carrier means for supporting a roll of lap to be processed, withdrawing the trailing end of the outgoing wrap and the leading end of the incoming wrap. Means and pull
Reduce the fiber weight per unit length of the dispensed wrap end
Means and the means for joining the withdrawn overlapping lap end together, said lapping machines and means is advanced towards said lap processing unit with the wraps having superimposed laps ends. 10. The means for reducing the fiber weight per unit weight of the trailing end of an outgoing wrap and the leading end of an incoming wrap includes means for forming a tapered wrap end on each of the wraps. Item 10. A lap processing machine according to Item 9 . 11. A lapping head having at least one roller for supporting a wrap roll, a lapping head having a lapping element for receiving wraps from the carrier means, and a lapping head comprising: Means for forming a gripping nip for holding the wrap therebetween; a guide plate disposed between the carrier roller and the nip to guide the wrap from the carrier roller to the nip; and A suction head that receives and combs the front end of the new wrap, and reverses the carrier roller to tear off the wrap between the nip and the roller to form a rear end of the wrap, so that it is placed on the guide plate, Next, rotate the carrier roller so that the tip of the new wrap Wrapping machine comprising control means connected to the carrier roller for feeding on a carrier. 12. The lap processing machine according to claim 11 , wherein said gripping nip forming means is a pair of rolls. Wherein said carrier means is composed of a pair of rollers for supporting the lap roll, the suction head according to claim is provided between the carrier roller pair 11
A lap processing machine according to claim 1. 14. The lap processing machine according to claim 11 , further comprising pressing means for pressing a wrap roll against said carrier roller. 15. The wrapping roller according to claim 15, wherein said pressing means comprises a pair of pressing rollers, each pressing roller being provided at both ends of said carrier roller and movable to a position inside said wrap roller on said carrier roller. the lap processing machine according to claim 14 which presses against the carrier b over la. 16. The lap processing machine according to claim 15 , wherein each of the pressing rollers is rotatably supported so as to be rotatable with respect to the lap roller. 17. The lap processing machine according to claim 15 , wherein said pressing rollers are reciprocally mounted on a common shaft, each roller comprising a frustoconical portion engaging an inclined surface inside the carrier roller. 18. the nip and forming means of a pair rolls, said by one by moving relative to the other of the roll, the one claims have and means for forming said nip in the operating position of the roll 11 A lap processing machine according to claim 1. 19. A lapping head having a carrier means for supporting at least one wrap roll, a lapping head having a lapping element for receiving wraps from the carrier means, and a lapping head disposed between the carrier means and the lapping head. Forming a nip for selectively holding the wrap between the pair of rolls for supplying the wrap to the combing head and the carrier means, and tearing the wrap between the nip and the pair of rolls; A pressing roll installed adjacent to the carrier means to form a trailing end on the wrap extending to the roll pair, and for drawing out floating fibers extending from the leading end of the new wrap. The suction means provided adjacent to the nip, and the carrier means and the roll pair are actuated so that the tip of the new wrap is Control means for superimposing and joining the rear end of the wrap extending therefrom. 20. A lapping head having at least one roller for supporting a lap roll thereon, a lapping head having a lapping element for receiving lapping from the carrier means, and lapping the lap. A pair of rolls provided between the carrier means and the lapping head for supplying to the head, and moving between a rest position and a retracted position to guide the wrap from the carrier means to the pair of rolls; A guide plate provided between the carrier means and the pair of rolls, and a suction head having a movable wall forming an openable and closable grip nip at one end, wherein the suction head has a first position and a second position. And the first position is below the guide plate and is located on the plate in the retracted position. Thus, the wrap is received and held, and the wrap is torn apart to form a trailing end on the wrap extending from the roll pair, wherein the second position is above the guide plate and in the retracted position. The guide plate accepts and combs the tip of the new wrap on the carrier means, and further moves the guide plate to the rest position to guide the tip of the wrap to the pair of rolls and to the rear end of the wrap there. Lapping machine with control means for joining. 21. The suction head has a fixed wall having a first lip at the end and the movable wall comprises a second lip facing the first lip to form the nip. lap processing machine according to 2 0. 22. The control means is connected to the carrier roll, stops the carrier roll after the guide plate moves to the rest position, causes the suction head to tear off the wrap, and then performs the suction. lapping machine according to claim 2 0, which is configured to perform the combing of the tip of the new lap in the head. 23. A lap processing unit, carrier means for supporting a roll of wrap to be processed, a pair of joining rollers disposed between the lap processing unit and the carrier means, and the carrier means. A suction pick-up device for picking up the fiber material from a path between the joining roller and a first position for isolating the fiber material from the suction pick-up device on the path and exposing the fiber material on the path to the suction pickup device; A lap processing machine comprising a guide movable between the second position and the second position. 24. A lap processing unit, a pair of joining rollers, a carrier means for supporting a roll of lap to be processed, and a slant surface at an end of a bobbin of the lap.
A lapping machine comprising a moving cone and a selectively actuated device for pressing a bobbin of the wrap against said carrier means to create a frictional driving relationship therebetween. 25. At least one lap processing head having a lap processing unit, carrier means for supporting a roll of lap, a pair of bonding rollers for pressing and bonding the overlapped lap ends, and said bonding A lap processing machine comprising means for moving at least one of the rollers between an actuated position for pressing both wrap ends and a retracted position.