JPS62130952A - Web winding machine and method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for winding a web and a machine therefor;
In particular, it relates to surface winders.

Conventional technology In web winding, the web is wound around a series of cores.
There are two basic methods. These are center winding and surface winding. In center winding, the core is attached to a mandrel that is rotated at high speed at the beginning of the winding cycle and is slowed down when the diameter of the winding to be wound is achieved.

In surface winding, the core and the web wound on the core are
It is driven by contact with a belt, rotating roll, etc. operating at or near web speed.

An example of belt surface winding is U.S. Pat. No. 3,148,845.
It is shown in the specification of No. In particular, U.S. Pat.
Attention is directed to rotating cradle rollers such as those shown by US Pat.

SUMMARY OF THE INVENTION The present invention provides a surface winder in which the core is inserted into a nip between two cooperating belt systems that are slightly flared. The belts of the two cooperating belt systems run in opposite directions at constant different speeds, and the thus speed difference between the belts is determined by the speed difference between the core and the winding during the winding cycle from core insertion to take-up spool discharge. A constant advance of the wound body is carried out.

While core insertion devices are well known in surface winders, the present invention provides a unique core change feed device based on endocycloidal motion. This endocycloidal motion provides accurate and repeatable core insertion that is well suited for use in conventional devices as well as the double belt surface winder described herein.

The present invention also provides a novel method and apparatus for cutting wound perforated webs to facilitate continuous high speed operation. The web is gripped at a first point while being advanced along the path.

During the proposed cutting, the core is used to grip the web against the fixed plate at a second point upstream of the first point, while the perforation line is located between the two points. It will be done. Since the web is advanced at a first point and fixed at a second point,
The web is under increasing tension to cause a cut at the perforation line.

The invention will now be described in detail with reference to embodiments shown in the accompanying drawings.

Embodiment Referring to FIG. 1, a rewinder or web winder 11 sends a web W in the direction of arrow 12. After feeding the web W through the perforation machine 13 which forms a lateral line of perforations 14 across the web W, the web W is fed through a series of rolls, ending with an adhesive core at the nip location 15; Refer to core C on the lower left side of Figure 3.

The web W is connected to an upper belt device 16 which contacts the top surface of the web take-up core (ultimately roll 17) moving along the path in the direction of arrow 18 as shown in the right-hand portion of FIGS. ,
It is continuously wound up between a screen-shaped upper belt assembly 16 and a lower belt assembly 19 moving in the direction of arrow 20 at a lower and different speed. These upper and lower belt devices 16,19 are preferably driven via rolls forming the nip 15.

A series of wicks 21 (see left hand part of Figure 2) are connected to chute 2.
2 to position 23, and from here the core 21 passes through the dotted line 2.
6, 27, and 28 to the nip position 15 by two assemblies moving in three intracuspical cycloidal motions.

Referring to FIG. 2, the endocycloidal motion core transfer device just described picks up the core at position 23 and transfers the core 21 to position 24.
is sent into contact with a roll 29 whose surface is coated with adhesive. A roll 29 is provided to apply adhesive to the core 21 in the form of an interrupted line.

The first assembly with endocycloidal motion moves and transports the core 21 from position 24 to position 25 and comes under the control of the second assembly with endocycloidal motion. The second assembly grips the core 21 between the adhesive sections and moves the core 21 from position 25 to nip position 15.
Move 1.

The nip 15 is approximately equal to the outer diameter of the core, and the upper belt device 16
and the upper belt device 19.

Prior to this case, the perforated web is carried forward around a series of rolls until it comes into contact with a line of adhesive on the core 21 and is transferred to the core 21. The now rotating core 21 and the web to be wound up are moved from position 15 in the direction of arrow 18 until the roll is fully wound up at position 17 as shown in FIG. Conventional equipment can be used to transfer the wound roll to continuous operation, such as cutting into individual consumption size rolls, packaging and boxing.

The perspective view of FIG. 1 shows the screen-like upper belt system 16 and associated rolls mounted in a generally cantilevered manner to the frame 30 on one side. The upper belt device 16 therefore does not move, but the screen can be removed from one side and reloaded. Similarly, the lower belt device 19 (having a plurality of belts and related parts) is attached to an auxiliary frame, not shown, which is movable vertically on slide shafts 31, 32, as shown in the lower right portion of FIG. It is installed in the form of a support. The block 36 fixes the slide shafts 31, 32 to the side frame 3°. Thus, the lower belt arrangement 19 can be adjusted up or down relative to the fixed upper belt arrangement 16, and the gap between both belt arrangements can be varied to compensate for differences in core diameter.

The working side in front of the winder has a side frame 30' which is shown schematically at the bottom left in FIG. An opening is cast in this side frame 30' so that the two upper and lower belt devices i6, 19 can be removed. The side frame 30' is also provided with means for attaching upper and lower brackets 1-34 and 35, as shown in the center right portion of FIG. Upper and lower bracket l-34,5
5 acts as means for supporting the cantilever sides of the two upper and lower belt devices 16 and 19.

Referring to FIG. 2, the front support part of the upper belt is attached to the bracket 3.
It is seen to have a first jack screw 36 extending downwardly from 4. This jack screw 36 engages with the upper end of a horizontal beam 37 that is the main support member of the upper belt device 16 .

A second jack screw 38 extends downward from the transverse beam 67
is threadedly engaged with the beam 39 supporting the lower belt device 19. A third jack screw 4o extending downward from the beam 39 is screwed into a rotating jack 41 attached to the bracket 35 at its lower end.

The upper beam 37 is fixed to the rear frame 3o, and the lower beam 3
9 is slidably attached to the rear frame 3o of the slide shafts 31 and 32 mentioned above. By removing the three jack screws 36, 38.40, the front end of each beam 37.69 is therefore unsupported and the upper and lower belt arrangement 16.19 can be removed and replaced.

The upper beam 67 is provided with a pair of longitudinally extending wings longitudinally in the direction of web movement of the winder. These wings 42, 43 (center right part in FIG. 2) support the various rolls that carry the upper belt arrangement 16.

Since the upper screen has a width corresponding to the web W, it is guided appropriately. For this purpose, the intermediate roll 44 is mounted on a bearing mounted with a commercially available effective "touching device", which acts as a screen edge guide sensor (not shown) to tilt the roll. In this state, the full width screen is assembled into a multi-roll assembly. The upper roll 45 is guided around the body.
It is supported at its end by a bearing block 46 which can be moved via a jack 47 in the direction in which a pneumatic pillow 48 presses. To ensure parallel movement of roll 45 relative to intermediate roll 49, pinions 50 are mounted on a common transverse shaft. Another roll associated with the screen-shaped upper belt device 16 is a vacuum transfer roll 51 operating in conjunction with a vacuum chamber 52 , the vacuum transfer roll 51 and the vacuum chamber 52 being supported from one upper beam 37 via wings 42 . .

As mentioned earlier, the lower belt device 16 is supported by the horizontal beam 3.
It is 9. This can be adjusted vertically by front and rear rotary jacks 41. Beam 69 similarly supports a pair of longitudinally extending wings 55,54 that carry various support rolls. Through the actuation of the jack screws 38, 4.0, the height of the beam 39 can be varied and thus the spacing between the upper and lower belt devices 16.19 can be adjusted.

Rotary jack 41 is used to align the ends of beam 39. The lower belt device 16 is the lower roll 5 of the second pump 15.
11.

To compensate for roll diameters with different finishes, wing 5
Roll 55, which is indirectly supported by 4, is vertically adjustable. This is accomplished by a separate rotary jack 56 attached to wing 43. For clarification,
Although only the front wing is shown, it will be obvious that a similar support device will be provided on the rear side depending on the implementation of the winder to be achieved.

Referring now to the upper left portion of FIG. 2, the main member within the web path includes a web pull-off roll portion 57. As shown in FIG. As part of this roll section there is provided an unfolding roll 58 with an adjustable nip and variable controlled speed and two cooperating pull-out rolls 59 and 60. The perforator 13 has a perforating head with an anvil attached thereto and a perforating roll 61 having a perforating blade as shown in U.S. Pat. No. 2,870,840. Details of the switching and transfer section are shown in FIG. 3, and details of the transfer sequence are shown in FIGS. 4-8.

3 is an enlarged view of the cutting and transfer roll assembly shown in FIG. 2; FIG. The web W wraps around a roll 32 that is driven at web speed and the roll 32 can contact an anvil roll 65 if desired.

As the web passes through roll 32 and rests on the surface of roll 65, it bridges grooves 66. A cutting roll 63, mounted for pivoting about an axis 67, is provided with peripherally radially outwardly extending blades 64. When groove 66 is rotated about the 2 o'clock position as shown in FIG.
Cutting roll 63 is pivoted downwardly so that blade 64 cuts the web and forms a free leading edge. Vacuum from an external vacuum source, not shown, is applied to a coaxial groove 38 in the external vacuum manifold. Coaxial groove 38 extending clockwise from line 71 to line 72 by use of adjustable inserts 69,70
is evacuated. Details of external vacuum manifolds are well known and are disclosed in U.S. Pat.
It is mostly stated in the specification.

Vacuum manifold groove 38 communicates with lateral vacuum passageway 76 as roll 65 rotates from about 10 o'clock position 71 until it reaches about 5 o'clock line 72.

Vacuum is provided to control the leading edge of the cut web section through a series of radial hole lowers 4 aligned laterally across the surface of the roll 65 immediately after the grooves 66. This leading edge is held around the roll 65 by a vacuum until it reaches line 72 at the 5 o'clock position, and from this point on to the approximately 7 o'clock position of line 75 by means of a screen-like upper belt device 16 that covers the surface of the roll 65. It is placed on top of the .

The vacuum chamber 52 with the diverter roll 51 extends to the 4 o'clock position relative to the roll 65 and has an upper nip 76 which acts to limit the size of the vacuum chamber 52 at this position as shown.
has. This creates a vacuum in the vacuum chamber 52 to act on the web W before leaving the roll 65 which ensures a reliable transfer of the web W to the screened upper belt device 16.

Transfer roll 51 is a substantially hollow roll with a series of holes 7
7 is on the surface. Preferably, commercially available materials such as expanded metal grids or other perforated metal plates can be used for the perforated surface of roll 51. Strip 7 attached parallel to the axis of the roll 51
8, it is noted that the vacuum of the arcuate portion 79 on the surface of the roll 51 is not effective.

The vacuum from the vacuum chamber 52 causes the leading edge of the cut web carried on the screen-shaped upper belt device 16 to coincide with the leading edge of the strip 78 when it reaches the roll 51 at about 12 o'clock, so that the leading edge of the cut web is aligned with the leading edge of the strip 78. Parts of the approximately equal cut web are not retained on the screened belt arrangement 16 as it is wound around the roll 51. This leading web portion from the leading edge to the trailing edge of the strip 78 is exposed to the upper belt device 16 as it is wound around the roll 51 by the vacuum in the vacuum chamber 52.
The next part of the web is held against the web. Since this folding occurs during the actuation of the strip 78 from 12 o'clock to 6 o'clock of the roll 51 and the nip 15 is formed there, the fold is shown in the new core of the nip 15 in the case of transport. The length of the fold is determined by the length of strip 78. Folding is not necessary for single-layer webs, but is preferred for two-layer or multi-layer webs.

When the leading edge of the folded portion reaches the 6 o'clock position, the core C is inserted as shown by the dotted line and immediately inserted into the nip between the upper belt device 16 and the lower belt device 19 as shown at position 15. be caught by.

As soon as the core C comes into contact with the upper and lower belt devices 16.19,
The surface speed becomes equal to the web speed almost instantaneously after starting to rotate clockwise. If both the upper and lower belt systems are operated at the same speed and in opposite directions as shown, the core is held fixed directly below the 6 o'clock position of the transfer roll 51. However, since the speed of the lower belt device 19 is slower than the upper belt device 16 and this difference in belt speed causes the core movement to cause the roll to be wound continuously from the nip position 15, this continuous winding The roll movement is in the direction of arrow 18.

Figures 4-8 illustrate the transport of the reverse folded surface tube as it reaches the nip line 15'. When the web comes into contact with the core C at the adhesive strip 80 and begins to rotate downward, it is glued as shown in FIGS. Pass and rotate. In FIG. 8, the leading edge of the web is secured to the core C by an adhesive strip 80 after one complete wrap, and the web is then wound in the same manner as described in U.S. Re. Pat. No. 28,353. It is captured by the approaching soil block until the interaction is complete.

As shown in FIG. 3, the large number of holes 77 may be caused by the perforated surface of the transfer roll 51 that can simultaneously pass through the perforated surface portion inserted into the extension IJ7 portion of the vacuum chamber 52 at a high speed. be understood. Alternative configurations are possible, allowing configurations to illustrate the use of continuous vacuum as opposed to very expensive and complex vacuum equipment that requires circulating vacuum pressure.
A hollow structure with a perforated roll 51 is preferred. This is particularly suited to solving the usual difficulties of achieving high speeds and achieving uniform vacuum across the rolls, especially when a spreader is involved.

The core supply section 81 has two rotating assemblies 82 and 83, as shown in FIG. Each assembly is moved from a pick-up position 23 to an adhesive position 24 to a transfer position 2 as shown in FIG.
5. Develop three intracuspical cycloid movements suitable for core transfer at the nip insertion position 15. Details of this special mechanism are shown in Figures 9 and 10. Each assembly 82,83 is identical in construction and operation, but differs in size due to this particular configuration. For example, a rotating vacuum roll 84 in the lower left corner of FIG. 2 rotates about an axis 85 within a trajectory 86 shown in phantom. The upper transfer assembly 83 has a similar rotating vacuum roll 87 rotating about an axis 88 within a track 89 also shown in phantom.

In fact, the lower transfer assembly 82 picks up the core at position 23 and moves through the endocycloidal passage to position 2 where an axially extending adhesive line interrupted by adhesive rolls 29 is provided.
Move the wick to position 4, then move the wick to position 25. The wick is held on the transfer assembly by vacuum. Due to the endocycloidal action, the adhesive line printed on the outside of the core at position 24 is shown at transfer position 25a, like the adhesive line at position 9o shown in FIG. At position 25, the vacuum on the lower assembly is shut off and the vacuum roll 87 on the upper transfer assembly takes control of the core and moves it into the nip position.

Intra-core cycloidal operation is achieved in the illustrated embodiment by orbiting vacuum roll 84 about the axis of shaft 85 in FIG. 2 and simultaneously rotating roll 84 relative to arm 91 as shown in FIG. achieved. Arm 91 is axis 8
5 is rotatably mounted. The parts shown in FIG. 9 are fixed and include a shaft 85 keyed to the side frame 30 and a pulley 92 keyed to the shaft 85 at 96. Vacuum valve 94 with coaxial vacuum manifold 95 is connected to bolt 9
6 to a fixed frame 60. Therefore,
Vacuum valve 94 is fixed.

The moving part has a pulley 97 rotatably mounted on a shaft 85 driven by a belt 98 from an external power source to synchronize cutting and transport.

Arm 91 is fixed to pulley 97 and supports vacuum connection tube 98 and sleeve 99 for rotation about axis 85.

The end of the arm or bracket 91 includes a bearing 100, a roll shaft 101, and a pulley 10 attached to the roll shaft 101.
2. Supports the vacuum roll 84. During their orbit, they rotate relative to arm 91 under the action of belt 103 which is placed around stationary pulleys 92,102. The diameter of pulley 92 is six times the diameter of pulley 102, thus creating a tricuspid intracycloidal motion.

The rotation of the pulley 102 rotates the vacuum roll 84 and the roll shaft 101.
The vacuum pack, that is, the nozzle 104 and the core C are rotated together around an axis provided by the vacuum pack or nozzle 104. This combined motion is based on the center of the core having an endocycloidal curve, as shown in dotted lines in FIGS. 1 and 2, as provided in U.S. Pat. No. 3,994,486.

Referring to FIG. 9, stationary vacuum valve 94 engages finished surface 105 of rotating arm 91. Referring to FIG. A circular vacuum manifold 95 has spaced apart inserts 106, 107 forming a vacuum region 1. This vacuum region (1) is evacuated via an external connecting tube 108 extending to a vacuum source (not shown).

The vacuum applied through the connecting tube 108 is applied to the circular vacuum manifold 95 when the opening 109 of the connecting tube 98 communicates with the vacuum region V.

A vacuum is applied to the central cavity 111 of the roll 84 through a vacuum pocket 110 of the tube 99 through a series of apertures 112 communicating with the pocket 110. In this way, the vacuum can act on axially spaced vacuum packs on selected portions of the track V in a predetermined or programmed manner, such that the vacuum force picks up, holds, and releases the core. Needed.

In order to achieve intra-core cycloidal movement, a trajectory is traced around the axis of a fixed shaft 85 while being rotated around the axis of the core transport vacuum rolls 84,87. In the illustrated embodiment, there are three revolutions per orbit, but other integers may be used based on the geometry of the device. Core transfer roll 84.88
Instead of the first pulley device 97.98a, which rotates the arm 91 so that the core C traces its orbit, a second pulley device also rotates the roll 84,88 so that the core C rotates around the roll 84.88 It will be clear that gears or other transmission couplings could be used instead of 92, 102, 103. Core C
is a pack device or nozzle 1 extending in a substantially radial direction.
Due to the use of 04, the vacuum rolls 84 and 87 are deviated from their axes.

The wick is continuously engaged and ejected by vacuum in the illustrated embodiment. However, depending on the device geometry, other engaging and ejecting devices can be used, such as pins or grippers on the vacuum rolls 84,87. Vacuum is preferred to minimize the use of moving parts.

For example, the only movements of the vacuum device illustrated are the movement of vacuum connection tube 98 through vacuum manifold 95 and the rotation of aperture 112 through sleeve 99 as shown in FIG. Nozzle 1 to limit vacuum effects and maintain the wicks in engagement.
04 capability is easily achieved by blocking portions of manifold 95 with inserts 106.

The position of the inserts 106, 107 thus programs the clamping and releasing of the core by the core transfer vacuum rolls 84,87.

Also, in the illustrated embodiment, a track 89 is provided which is actually larger than track 86. This allows the use of a long nozzle 104 and develops a long narrow point to facilitate insertion of the wick into the nip 15. Also, the nozzle 104 is connected to the nip 15.
This means that the winding of the roll is unhindered by being retracted equally quickly from the vicinity of the winding.

Reference will now be made to FIG. 3A, which illustrates a variation of the belt surface winder, focusing on the portions previously discussed with respect to FIG. The substantial difference between the illustrations of FIG. 3A and FIG. 3 is in the core insertion nip, designated i5a in FIG. 3A. In FIG. 3A, the lower roll 51' is located downstream from the position shown in FIG.
It is shown that it is currently unfolded by the fixed plate 217a. The purpose of providing the fixing plate 217a is to quickly obtain the core C from the core insertion mechanism. The wick insertion mechanism is shown only schematically by the tip, which is a passage following the centerline of the wick when the wick is supported by the vacuum packing device or nozzle 104. This is based on the simplification of the core supply section 81 in order to avoid stopping the nozzle 104, which is a vacuum packing device, from being pulled up quickly.

It will also be noted that in this connection there are actually two nips. There is a core insertion nip 15&, and a short distance downstream from the nip is a second nip, belt device nip 223. The nip 223 is developed between the cooperation of the upper and lower belt systems. 1st to 10th
In the illustrated embodiment, a single nip 15 is adapted for the core insertion action and for the initiation of double belt device winding.

In this variant, the first nip 15a is still adapted to the core insertion action, but the second nip 223 is adapted to the initial stage of double belt device winding.

A simple, preferred and effective variation of the type just described is the eleventh
This is shown in Figures 1 to 17. This is simple as it omits the following.

(1) a mechanism for cutting the web prior to transfer having two driven rollers and a compound cam mechanism that moves one of the rollers for cutting; (2) a vacuum conveying the cut web at the transfer point to a new core; a pumping device; (3) an upper vacuum screen and guide device; and (4) one of the two endocycloid core handling mechanisms.

Reference is now made to FIG. 11 which shows the modified rewinder when winding of the roll is completed and a new core is inserted into the transfer nip.

The web W is unwound from one or more parent rolls and subjected to embossing, laminating, printing, etc., and then enters a winder on the left side. The two rollers W are tension rolls 201 and 2.
02 and is sent to a perforation roll 203. The tension roll 202 is normally positioned at the 9 o'clock position with respect to the perforation roll 203, but in this case it is moved to approximately the 7 o'clock position to change the perforation roll surface (from 7 o'clock to 10 o'clock) to change the perforator blade. position). Perforation roll 203 has a resilient perforation blade that perforates the web by acting against the anvil of a fixed perforation bar 204 .

The blade and anvil are shown to simplify the drawing.

The web W then passes through an intermediate guide roll 205, a driven roll 206, and is wound into a winding pass through a core insertion nip 208 as shown in FIG. It continues to the body 208. The spool 207 to be wound is held securely between an upper belt device 209 and a lower belt device 210 to ensure rotation and winding of the spool to be wound and transport during the winding cycle to completion. horizontal movement. The take-up speed of roll 206 and the speed of upper belt device 209 are the same and are very close to the web speed set by tension rolls 201, 202 and perforation roll 203 by +0° to +5%.

The speed of the lower belt device 210 is slower than the speed of the upper belt device 209 to such an extent that the wound body reaches the wound body position 207 at the end of winding. This speed difference is about 3 inches to 10 inches of web speed and is adjusted by the operator to match the web length of the finished roll as shown in FIG. 17, which is a drive diagram. In FIG. 17, the following symbols are used.

CW indicates clockwise direction; CCW indicates counterclockwise direction; B indicates belt drive; TB indicates timing belt drive, OH indicates chain drive; G indicates gear drive; VS indicates variable drive; M indicates a motor.

The upper and lower belt devices 209 and 210 have a gap of 2 between the belts.
．． 5-5. ICTL (1-2 inches) is actually 12.7-15.2 cIrL (5-6 inches) close to each other
covers the entire web width with several narrow belts. The gap between the belts of the upper belt device is centered opposite to the gap between the belts of the lower belt device, or vice versa;
The entire width is covered by at least one belt device during winding.

The rolls 211, 212 form the working line of the upper belt device 209. Roll 212 is a drive roll. roll 2
12 is 1.3-5. The core insertion nip 208 is adjustable toward the roll 206 to adjust the core insertion nip 208 to accommodate core diameters ranging from A to 2 inches. roll 2
12 is in a fixed, non-adjustable position. Rolls 213 are a plurality of rolls, one for each belt of upper belt assembly 209, that are pneumatically or spring biased against the belts to act as belt tensioning members to maintain all belts at equal operating tension. ing.

The rolls 214, 215 form the operating line of the lower belt device 210. Roll 214 is a driven roll and is vertically adjustable to match the core diameter. roll 215
is vertically adjustable to accommodate the finished roll diameter, which ranges typically from 2 to 6 inches. The roll 216 is the lower belt device 21
A plurality of rolls, one for each belt, are pneumatically or spring biased against the belt to act as belt tensioning members to maintain all belts at equal operating tension.

Fixed plate 217 extends the distance from roll 206 to the belt on roll 214. The core on which the web was originally wound after the conversion is driven by the upper heald device 209 and rolled along the fixed plate 217 . The fixing plate 217 is vertically adjustable to suit the core diameter.

FIG. 11 shows a tricuspid intracycloidal core handling mechanism 218 that is suitable for using only continuous, stable rotational motion without combs, cranks, links, or the like. 260 cIrL (12 inches) diameter centering mechanism 21 shown in FIG.
8, the maximum acceleration of the core is only 2.5 G at a completely quiet, reasonable and acceptable 60 turns per minute.

Also, at an acceptable and reasonable rate of 90 turns per minute,
The acceleration is only 5.5G.

The centering mechanism 218 has sharp points 226a and 227a.

Make one revolution per finished winding moving through passages 226, 227, 228 forming 228a.

As shown in FIG. 12.13, during rotation, the corer mechanism 218 holds and transports the core by means of a vacuum packing device.

In this embodiment, a continuous pack can be used since the continuous strip of adhesive is placed down and opposed to the sides by the vacuum pack device.

The core handling device operates three times during each rotation.

(1) Pick up a new core from the core discharging car 219 one at a time. The core support arm is activated immediately before the take-up operation.

(2) Glue roll 22 rotating slowly in a container of transfer adhesive so that the surface is always covered with a fresh film of adhesive;
Press the core against 0.

The adhesive roll 220 rotates steadily at a constant speed based on the winder speed (see FIG. 17). This action places the line of transfer adhesive on the core in the correct position for transfer (see Figures 12.13 and 14).

(3) rolls 20 with precise moments of the winding cycle synchronized with perforator pinch plate mechanism 221 to cut and transfer the web to a new core with an accurate and constant number of sheets per roll;
Insert the core with adhesive into the core insertion nip 208 between 6 and 211. The moment the wick enters nip 208 the vacuum is stopped.

These operations of picking up, gluing, and inserting are continuous and repeated continuously for every product winding cycle. Figure 11 is 1
The centering mechanism 218 is shown in all three operating positions to illustrate these positions in one figure.

Mechanism 221 is a pinch plate mechanism. Its action and purpose are to cut the web W against the upper belt device 209 at the moment of cutting the web.
(See Figure 14). In the pinch plate mechanism 221, the distance between the point A where the pinch plate grips the web against the upper belt and the point B where the core firmly grips the web against the fixed plate 217 is between the two lines of the perforation. are arranged such that the spacing is less than twice the spacing between the two. Since the core insertion and drilling are timed, the gender line of the drilling P to be cut is located in the middle, ie, midway between points A and B in FIG. 14.

The surface speed of the pinch plate is the same as the speed of the upper belt device 209.

At point A, the web moves between the pinch plate and the upper belt at full web speed. At point B, the web is fixedly stopped between the core and cut at the line of perforation P between points A and B. This results in the following.

(1) Accurate sheet count of each completed roll, (
2) a clear web cut at the perforation line; (3) a short web folded around the core (point A);

Approximately V2) of the interval between B), a relatively clear amount of conversion, (4)2
A fold that is reversely folded around a core that holds both layers of a layer web.

FIG. 16 is a view looking vertically downward from above the centerline of the shaft 222 of the pinch plate mechanism. The upper belt device 20 is attached to the shaft 222.
Each belt 9 has several radial arms 5 each supporting a wide mating belt and an axially long curved pinch plate. The fixation plate 217 has an H-shaped hole for each radial arm. The holes are small enough to allow the pinch plate to pass through the fixed plate and not prevent the web from wrapping around the core as it rolls through the holes. The pinch plates pass through the H-shaped legs, while the radial arms pass through the transverse bars of the H-shaped opening.

The pinch plate mechanism 221 rotates continuously during the full winding cycle, gripping the web against the upper belt device 209 several times, and
Web flow, winding, and cutting do not disturb the perforation except for the precise moment of web cutting and transport, once per roll. This position and state is for the following reasons.

(1) The roll 206 is arranged such that the web path is located on the lower surface of the upper belt device 209 (see FIG. 12), that is, the upper surface of the roll 206 is aligned with the lower running surface of the upper belt device 209.

(2) The surface speed of the pinch plate is the same as the speed of the upper belt device 209.

The circumference of the circular passage on the surface of the pinch plate is equal to an integral number of sheet times the spacing between the perforation lines forming the sheet.

Figures 11 to 16 have a circumference of 114.3 cm (45 inches) (10 sheets x 11.4 c1rL (4.5 inches))
/ seat) has a pinch plate mechanism. This means that the number of sheets must be a multiple of 10 (100, 130, 210, etc.). Alternative pinch plate mechanism dimensions are generally appropriate, but several design criteria must be met, such as:

(1) The circumference of the circular passage on the surface of the pinch plate is equal to an integral number of sheets times the length per sheet.

(2) The distance between A and 3 in Figure 14 is shorter than twice the sheet length. In the US, this is shorter than the 22.9 cm (9 inches) of toilet paper, which is most in demand. European products are in low demand, with seat lengths of approximately 140m.
ttt (approximately 5.5 inches).

(3) The surface speed of the pinch plate is equal to the speed of the upper belt device 209 and the web speed.

(4) The perforator and the pinch plate mechanism are synchronized such that the perforator produces N perforation lines per rotation of the pinch plate mechanism. This N is an integer number of sheets around the circular path on the surface of the pinch plate.

(5) The radius of the pinch plate mechanism (from the center line of the shaft to the outer surface of the pinch plate) is determined by (a) core diameter, (b) shaft radius, (C
) shall be large enough to accommodate and contain the fixed plate thickness.

For example, within these design criteria, 57.2 cnL (22
, 5 inches) circumference (5 sheets x 11.4 cm (4,5
inch)/sheet) is appropriate. This allows the finished roll sheet to be a multiple of 5 (95,135°215, etc.). This is very suitable for many applications where multiples of five sheets are required in the finished roll.

Figures 12-15 schematically illustrate what happens at the moment just before the core is inserted into the core search nip 208 until the adhesive line on the core picks up the web and winding begins.

The time from FIG. 13 to FIG. 15 for a rewinder operating at 6000 PPM is only about 5 milliseconds.

(1) The wick with the adhesive line reaches the wick insertion nip 208, which is adjusted to be smaller than the wick diameter to firmly grip the wick in the nip.

(2) The core is tightly gripped in the core insertion nip 208 and moved through the nip at web speed by the surface of roll 206 and an upper belt arrangement 209 that hangs over roll 211 moving in the same direction at web speed.

(3) The core rolls over a fixed plate 217 which grips the web firmly against the fixed plate at point B and stops the web movement. ,
The perforation is cut between aA and 3.

(4) The core continues to shift over the fixed plate until the line of adhesive is located between the core and the cut web (approximately the 6 o'clock position of the core in Figure 15). The adhesive picks up the web and begins winding. The radial acceleration of the web and adhesive during pick-up and transfer is A for a conventional winder. The web after the core (to the left of the adhesive in contact with the web) continues to feed to create a loose web (zero tension) that continues during the first wrap around the core.

(5) The core on which the web is initially wound quickly rolls into the nip 223 between the two slightly divergent cooperating belt devices 209,210. In particular, this nip 223 is provided with a roll 214 and an upper belt device 209. This is where the horizontal movement of the wound winding slows substantially and a "double belt" winding begins and continues until the winding is completed at 207.

At 3000 PPM, it takes only about 66 milliseconds (approximately 96.5 cm
8 inch) web). This transport cut web breakage concept has several unique features.

(1) The web bent at the core is a fold that captures both layers of the two-layer web, and the web is folded at an appropriate high speed (
3000 PPM).

(2) When the line of adhesive on the core reaches the 6 o'clock position where the core presses the adhesive against the web and causes the transfer of the cut web to the core, the adhesive enters continuous transfer. The radial acceleration that has to be overcome is very small compared to conventional winders.

(3) The core presses the line of adhesive against the web three times before the first wrap around the core is completed.

By comparison, in a conventional central take-up rewind machine, the transfer pad presses the web against the adhesive only once. In a rewind machine according to U.S. Pat. No. 4,327,877,
The core presses the adhesive against the web only twice.

(4) The adhesive line on the core covers the entire width of the web for the best possible transport effect. In comparison, with conventional rewinding machines,
Transfer adhesive is applied to the core in a narrow ring that covers less than A of the web width.

(5) During the initial rotation of the core after cutting the web until the line of adhesive reaches the 12 o'clock position, the winder does not remove the entire perforated web. This means that long periods of low web tension (virtually zero) mean that the transfer adhesive does not overcome the web tension and the web that is initially wound onto the core becomes somewhat loose and wrinkled. occurs. This is the first
Although this is a minor drawback compared to the results produced by the embodiments of FIGS. 1 to 10, it is entirely justified in terms of the considerable reduction in mechanical complexity. Thereafter, the unintegrated web and core advance into the nip 223 formed by the midpoint of the run of the upper belt assembly 209 and the upstream end of the lower belt assembly 210.

(6) The entire process is independent of core diameter.

The variant of FIG. 11 also allows the opportunity to include unique features not previously used.

A dancer roll can be placed between the perforator and the winding mechanism to directly control the winding tension.

There are several modifications of this new dual belt surface winder that will be put to good use.

(1) The pinch plate mechanism is omitted. Although the winder reliably winds the windings, the windings contain unacceptable disadvantageous characteristics.

(a) The number of sheets per roll varies by ±5 sheets (approximately).

(bl The cut occurs at two or more different perforation lines, leaving the winding with an uneven and uneven trailing edge.

(The rear end folding around the C1 core can be done for 5 sheets.

(d) In a two-layer web, the two layers are cut at different perforation lines.

(2) Eliminate the pinch plate mechanism 221 with a dual flexible blade perforator that creates one very weak perforation line per winding cycle instead of a regular perforation. Therefore, the insertion of the core into the conversion nip occurs at a depth of 5.1 to 7.6 crrL (2 to 3 inches) after a very weak perforation has been passed.

(3) Pinch plate mechanism-221 for products without perforations
omit one perforation line per winding cycle. Therefore, after the perforation passes through the nip, 5.1 to 7.6 cr
The core is inserted into the transfer nip at rL (2 to S inches).

Features and Advantages of the Embodiment of Figure 11 (1) All operations and functions are continuous and constant rotation. There are no cams, cranks, indexers, or similar devices.

(2) Improved performance up to 6 OLPM and over 3000 F'PM.

Another variation is shown in U.S. Pat.
327.877, including the use of an endocycloidal core feeder 218 in combination with a conventional surface winder.

In the embodiment of FIG. 18 for winder 501, roll 3
Winding is accomplished by the cooperation of a three roll cluster including 11,314 and rider roll 324. The cutting is carried out in the same manner as previously described with reference to FIG. 14, where the core holds the web against the fixed plate at B and the product being wound creates a second holding point as at A. Roll 311 (!:
This is achieved by the cooperation of the fixing plate 317.

The same effect is possible with a modification as shown in FIG. 18A. In this figure, the take-up ladle roll is the same as in FIG. 18, but a large fixing plate 418 is provided, thereby omitting the lower nip forming roll 206. In addition, as shown in FIG. 19, the upper and lower belt devices 2G9
A conventional core feeding device 501 can be used in conjunction with the surface winder of the present invention having an angle of 210°. Core feeder 501 includes an articulated arm 50 that moves from a core location to an adhesive take-up location to a nip location under the control of a pivot arm 503.
It has 2.

In the foregoing description, detailed descriptions of embodiments of the invention are presented for purposes of illustration and description, and many modifications of the details herein may be made by those skilled in the art without departing from the spirit and scope of the invention. It is possible.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the winder of the present invention from the product discharge end side, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is an enlarged schematic view of FIG. 2. FIG. 3A is a schematic diagram configuring a modification of FIG. 3, FIGS. 4 to 8 are schematic diagrams showing the order of web transfer, and FIG. 9 is a view taken along line 9-9 in FIG. A sectional view of one end of the core supply device, FIG. 10 is 10-10 in FIG.
FIG. 11 is a schematic side view of a modified train of the surface winder; FIGS. 12 to 15
The figure is an enlarged schematic view of the central part of Fig. 11 showing the order of web cutting and transport, Fig. 16 is a schematic plan view along line 16-16 of Fig. 11, and Fig. 17 is the winding machine of Fig. 11. FIG. 18 is a schematic side view of a variant implementing a different surface winder using an endocycloid core feeder; FIG.
Fig. 8A is a schematic view of the central part of Fig. 18 showing another modification, and Fig. 19 is a schematic side view of yet another modification in which a different core feeding device is implemented in the double belt winder. . In the figure, 11
: Web winder, 13: Perforator, 14: Perforator, 15.7
6.223: Nip, 16, 19, 209, 210
: Belt device, 17, 45, 55, 32, 65 : Roll, 21: Core, 22: Chute, 30. 30': Side frame, 31. 32 Ni Ride shaft, 33 Ni block, 34
゜35 Nib bracket, 36, 38.40: Jack screw, 37: Horizontal beam, 41.56: Rotating jack, 42
．． 43: Wing, 44.49: Intermediate roll, 47
: jack, 48: pneumatic pillow, 50: pinion, 51
: Vacuum transfer roll, 52: Vacuum chamber, 56.54 : Wing, 58: Expanding roll, 59°60: Pulling roll, 6
1: perforation roll, 66: cutting roll, 64 niblade,
66.38: groove, 67: shaft, 74: hole, 78: strip,
80: Adhesive strip, 84, 87: Vacuum roll, 86.
89: Orbit, 91: Arm, 92, 97, 102:
Pulley, 94: Vacuum valve, 95: Vacuum manifold, 99 Ni sleeve, 100: Bearing, 101: Roll shaft, 103: Belt, 104: Nozzle, 106, 107: Insert, 10
9: opening, 110: pocket, 111: hollow chamber, 112
: hole opening, W: web, C: core. Patent Applicant's Agent Teru So Ga Do□6, Contents of Amendment Procedures Urasa Book November 25, 1986

Claims (1)

Claims: 1. A method for surface winding a web onto a core comprising rotating the core in contact with the webs of first and second belt devices moving in opposing diverging directions. 2. The method of claim 1, wherein the web is adhesively transferred to the core at a low radial acceleration of the core. 5. The method of claim 1, wherein the web is gripped between the core and the fixed surface so as to cut the web. 4. One of several lines of perforations to cut the web
4. A method as claimed in claim 3, in which the web and core are gripped between a first belt device and a fixed surface for cutting in two special lines. 5. The method of claim 1, wherein a line of perforations is formed in the other perforated web to be cut to produce a web cut. 6. A plurality of longitudinally spaced perforation lines are formed in the web, and one of the perforation lines in each winding cycle is weakened to cut, resulting in web cutting. the method of. 7. Advance the web and core in contact between a pair of belt devices running at different speeds and in different directions, and spread out in the direction of movement of the faster belt device to match the winding formation of the web on the core. A method of winding a web onto a core consisting of being related to. 8. The web is laterally perforated at longitudinally spaced intervals and the web is cut along the perforation line before being advanced with the core between a pair of belt devices. Method described. 9. The belt device extends substantially co-linearly along the path of travel of the web in contact with the core to provide an insertion nip, and before entering the nip the web is cut transversely to provide a leading edge for cutting and contact with the core. 9. The method of claim 8, wherein contact is made between the vacuum roll and the leading edge. 10. The fast running belt system of the belt system extends beyond the other belt system to grip the core and web against a fixed plate to cut the web before the web and core advance between the pair of belt systems. The method according to claim 8. 11. The perforation line at which the cutting occurs is arranged between the gripping point and the second gripping point provided by the contact of the winding wound onto the previous core by a fast belt device
The method described in item 0. 12. The perforation line at which the cutting occurs is between the gripping point and a second gripping point provided by a rotating gripping device which periodically projects through the fixed plate to grip the web against the fast belt device. 11. The method of claim 10, wherein: 13. The web is perforated along a plurality of equally longitudinally spaced lateral sides of each turn wound around the core, the first and second gripping points being shorter than the spacing between the three lines of perforations; 13. A method as claimed in claim 12, in which the cutting occurs along the planned line of the perforation so as to provide windings spaced apart in the direction of movement and thus accurately counted. 14. Advancing the leading edge of the web into a nip provided by upper and lower belt devices operating in opposite directions at different speeds and introducing a pre-adhesive core into the nip substantially simultaneously with the leading edge; Surface winding of the web onto a core consisting of rotating the core under the influence of a belt system to wind the web and maintaining the belt system in a divergent relationship to accommodate the increasing diameter of the roll being wound. how to. 15. The method of claim 14, wherein the wick is moved to be introduced into the nip via an endocycloidal passage. 16, a frame forming a web passageway having an inlet end and an outlet end; a first belt apparatus on the frame having a roll extending along one side of the web passageway and adjacent the passageway inlet end; a first belt apparatus forming a core insertion nip; a second belt system on the frame extending along the other side of the web path and divergent with respect to the first belt system to accommodate the formation of the web on the core; a second belt system on the frame cooperating with the belt system roll; A surface winder for winding the web onto a core, comprising a device for driving a first belt device faster and in the opposite direction than the belt device, and a device for introducing the core with adhesive into the web path. 17. The surface winding machine according to claim 16, wherein the second belt device is provided with a roll spaced apart from the first belt device roll toward the exit end of the web path. 18. The surface winder of claim 17, wherein the nip forming device includes a second roll on the other side of the web path. 19. The fixing plate is located on the other side of the web path between the second roll and the second belt device roll.
The surface winder according to item 8. 20. The surface winder of claim 19, wherein a proximal opening is provided in the stationary plate, and a web gripping device is associated with the stationary plate opening for transversely cutting the web. 21. The web gripping device is constructed and arranged to engage the web for transverse cutting when the upstream portion of the web is held against the fixed plate by the core.
The surface winding machine described in item 0. 22. The surface winder of claim 17, wherein the nip forming device has a stationary plate on the other side of the web path. 23. The surface winder of claim 16, wherein a roll is provided on the second belt device adjacent the entrance end of the web path to constitute a nip forming device. 24. The surface winding machine of claim 16, further comprising a device for transversely cutting the web in the web path downstream of the core introduction device. 25. A surface winder according to claim 16, further comprising a device for transversely cutting the web upstream of the core introducing device. 26, a frame, a first belt device on the frame, and a first belt device configured to provide a core receiving nip smaller than the wound body to be discharged;
a second belt system on a frame divergent to the belt system, a device for driving one of the belt systems faster than the other and in an opposite direction, and a web and pre-glued core introduced into the nip. and a device associated with the belt device. 27. The surface winding machine according to claim 26, wherein the frame is provided with a device for adjusting the spacing between the belt devices. 28. The surface winding machine according to claim 26, wherein a device for adjusting the divergence of the belt device is provided on the frame. 29. The frame is provided with a device for adjusting the spacing between the belt devices to accommodate cores of different sizes and for adjusting the divergence between the belt devices to accommodate windings of different sizes. A surface winder according to claim 26. 30. The surface winder of claim 26, wherein the frame is provided with a device for cantilevering one of the belt devices to facilitate disassembly of the belt device. 31. The surface winding of claim 30, wherein a cantilever support device and an adjustable spacing device are associated for adjusting the belt device during operation of the winder to create the winding. Take machine. 32. The surface winder according to claim 26, wherein one of the belt devices has a perforated belt. 33. The surface winding machine according to claim 32, wherein a perforated roll is provided on the frame for applying a vacuum to the perforated belt. 34. The surface winder of claim 26, wherein the at least one belt arrangement comprises a plurality of belts arranged in side-by-side relationship. 35. The surface winder according to claim 26, wherein each belt device is driven at a constant speed. 36, a first nip upstream in the web travel path from the first nip;
a second nip is provided adjacent to and spaced apart from the nip;
27. The surface winder of claim 26, further comprising a web cutting device on the frame between the first and second nips. 37. The surface winding machine of claim 26, wherein the web cutting device has a stationary plate and a rotary gripping device for pressing the core and web against the first belt device. 38. The rotary gripping device has a shaft and a plurality of arms on the shaft, and the fixed plate has a plurality of holes aligned with the arms;
38. A surface winder as claimed in claim 37, further comprising an arm projecting through the hole to press the core against the upper belt device. 39. successively withdrawing the core from the storage source in synchronization with the winding of the web into successive turns and moving the core through a substantially internal cycloidal passage to rapidly introduce the core into the nip; A method for transporting core from a core storage source to a nip-forming and winding location of a continuous winder for a web roll comprising: 40, the endocycloidal passageway being characterized by a plurality of cusps, removing the wick from the wick storage at one of the cusps;
40. A method as claimed in claim 39, characterized in that the wick is introduced into the nip at the second point. 41. The method of claim 40, wherein the adhesive is applied to each core at the third cusp. 42, each wick is sequentially moved through two tricuspid intracycloidal passages, the first passage having a cusp to which adhesive is applied, and the second passage having a cusp located in the nip. 42. The method of claim 41 having a head. 43, a plurality of prongs, the first prong being located adjacent the wick storage source, the second prong being located proximate the adhesive applicator, and the third prong being proximate the nip; A method of operating a surface winder having a wick storage source and a nip for receiving the wick to be wound, comprising continuously moving the wick from the wick storage source to the nip along a path characterized by a cusp. 44. A core transfer member is provided for supporting the core along the passageway, the core transport member tracing a trajectory as the core supported to provide the cusp is rotated about the core to remove the core at the core storage source. 44. The method of claim 43, further comprising selectively communicating a vacuum to the core transfer member to engage and release the core into the nip. 45, comprising a frame, a device on the frame for supplying the web to a winding station for winding onto a core, and a core transport device on the frame for supplying the web to a winding station, the web passing through a substantially internal cycloidal passage; A surface winding machine in which a core transfer device has a device for moving the core on a frame. 46, having a core transport device with two mechanisms each operative to move the core through the endocycloidal passageway, one mechanism being operative to move the core through the adhesive applicator, and the other mechanism being operative to move the core through the adhesive applicator; 46. The surface winder of claim 45, wherein the surface winder is operative to supply core to a winding station. 47, a vacuum packing device disposed on the transfer device for gripping the core along its length, and a vacuum programming device associated with the transfer device for selectively applying and interrupting the vacuum; 46. A surface winder according to claim 45, which is capable of selectively taking up and discharging. 48. The core transfer device includes a fixed shaft device fixed to the frame, an arm device rotatably attached to the shaft device,
a rotatably supported core transfer roll assembly parallel to and spaced apart from the fixed shaft assembly; a first member associated with the frame for orbiting the core transport roll assembly relative to the fixed shaft assembly for rotating the arm assembly; a second pulley device associated with the fixed shaft device for rotating the core transfer roll device; a pack device on the core transfer roll device extending generally radially to engage the core; 46. The surface winder of claim 45, further comprising a vacuum device connected between the frame arm device, the core transfer roll device, and the pack device for sequential and selective engagement and disengagement. 49, a frame, a device on the frame forming a nip for receiving a core to be wound together with the web material, a core storage source associated with the frame, a core engaging member and a device engaged about the core engaging member; a frame between the wick storage source and the nip for sequentially moving wicks from the wick storage source to the nip having an apparatus associated with the wick engaging member for orbiting the wick engaging member while simultaneously rotating the wicks together; A surface winding machine comprising an upper core transfer device and a programming device for selectively engaging and releasing the core with a core engaging member. 50, providing a core transfer path characterized by a plurality of cusps, a first cusps positioned proximate the adhesive applicator on the frame and a second cusps positioned proximate the nip; 50. The surface winding machine according to claim 49, wherein a track device and a turning device are arranged. 51, advancing the web along the passage, gripping the web at a first point in the passage while the web advances, and at a second point upstream of the first point, the perforation line is between the first and second points; A method of winding a web onto a series of cores having longitudinally spaced and laterally extending perforation lines comprising using the core to grip the web against a fixed plate while being positioned in the core. 52. The method of claim 51, wherein the first point is provided by the cooperation of a web roll wound around the leading core and a surface moving at the web speed. 53. The method of claim 52, wherein the surface is a surface of a cradle roller. 54. The method of claim 52, wherein the surface is a fixed surface provided by a moving belt device. 55. The method according to claim 52, wherein a plurality of perforations are provided on each wound body. 56. The method of claim 52, wherein a single perforation line is provided on each winding. 57, a frame and a roll rotatably mounted to the frame in a web travel path as the web is wound onto the core to provide a roll;
a fixed plate on the frame spaced apart from the roll to provide a gripping point; a second gripping point cooperating with the first gripping point provided by the securing plate and the core and the roll;
A perforated web on a series of cores with rolls and associated devices for tensioning the web between two gripping points and engaging the surface of the winding to create a web cut along the perforation line between the gripping points. A surface winding machine that winds up. 58. The surface winder of claim 57, wherein the associated device is a position on the surface of the roll angularly related to the roll surface position forming the first gripping point. 59. The surface winder of claim 57, wherein the associated device is a belt partially covering the roll and extending along the web path passing from the roll to the winding. 60, a frame forming a web passage having an inlet end and an outlet end, a first take-up roll on one side of the web passage proximate the entrance end of the web passage, and an opposite side of the web passage spaced downstream from the inlet end; The second take-up roll, the rider roll on one side of the web path downstream of the first take-up roll, and the rotation of the take-up roll apply web tension to grip the web between the core and the fixed plate and cut the web. A surface winder that winds the web onto a series of cores with a fixed plate on the frame opposite the web path.