US3796388A - Apparatus for winding a running length of thermoplastic sheeting into a series of rolls - Google Patents

Apparatus for winding a running length of thermoplastic sheeting into a series of rolls Download PDF

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Publication number
US3796388A
US3796388A US00057678A US3796388DA US3796388A US 3796388 A US3796388 A US 3796388A US 00057678 A US00057678 A US 00057678A US 3796388D A US3796388D A US 3796388DA US 3796388 A US3796388 A US 3796388A
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United States
Prior art keywords
sheeting
core
unit
severing
windup
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Expired - Lifetime
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US00057678A
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English (en)
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D Davis
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EIDP Inc
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EI Du Pont de Nemours and Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/32—Coiling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
    • B65H19/2215—Turret-type with two roll supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51539—Wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/516—Securing handled material to another material
    • B65H2301/5161—Binding processes
    • B65H2301/51614—Binding processes involving heating element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/231—Turret winders
    • B65H2408/2315—Turret winders specified by number of arms
    • B65H2408/23152—Turret winders specified by number of arms with two arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film

Definitions

  • ABSTRACT A system and method for automatic handling a running length of thermoplastic sheeting to form a series of individual rolls wherein the method comprises collecting the running length of sheeting, moving a core containing a certain length of sheeting away from the general path of movement of the sheeting, moving an empty core into the general path of movement of the sheeting, severing the sheeting and heat bonding the end of the running length of sheeting to the empty core and winding the running length of sheeting on the empty core; and wherein the system comprises basically an accumulator unit, sheetforwarding means, windup promotion means, windup unit, and severing unit all cooperating through a control means to accomplish the primary objective. Rolls of sheeting made from the system and method.
  • this invention relates to a system for automatically moving a full roll of sheeting out of the winding position, heat bonding the severed end running length of sheeting to an empty core and moving the empty core into position for winding. More particularly, this invention relates to a roll of sheeting made utilizing the automatic system which comprises the core and a plurality of layers of sheeting adjacent thereto with the end of the first adjacent layer of sheeting being heat bonded to the core.
  • sheeting can be attached to cores l) by wrapping the sheeting around the core such that the end of the sheeting which is adjacent to the core is caught under the next layer of sheeting and therefore thevsheeting is held fast to the core and (2) by gluing the end of the sheeting to the core.
  • thin sheeting up to about 0.75 mil can be cut with a hot wire cutter and mechanically started on an empty core (U.S.Pat. No. 3,091 ,41 l Turret type winders are also known.
  • a system, method and resultant roll were sought which would (1) allow one to cut a running length of sheeting and secure the sheeting on an empty core without stopping the continuous flow of sheeting through a processing unit, (2) avoid the waste from fold-back and from the sharp edge on the end of the sheeting, and (3) allow for automatic changing from a full to an empty core.
  • a system for automatic handling of a running length of thermoplastic sheeting from a processing unit to form a series of individual rolls' which comprises in combination an accumulator unit cooperating with the processing unit and positioned along the general path of movement of the sheeting; sheet forwarding means cooperating with the accumulator and positioned along the general path of movement of the sheeting; windup promotion means cooperating with the sheet forwarding means and positioned along the general path of movement of the sheeting; a windup unit cooperating with the windup promotion means and positioned along the general path of movement of the sheeting, said windup unit comprising means for moving a core containing a certain length of sheeting away from the general path of movement of the sheeting and replacing said core containing a certain length of sheeting with an empty core; and a severing unit cooperating with the windup unit and positioned along the general path of movement of the sheeting, said severing unit comprising means for severing the sheet
  • the method is a method for automatically changing from a core containing a certain length of thermoplastic sheeting to an empty core when winding a running length of sheeting into a series of rolls which comprises (a) collecting the running length of sheeting, (b) moving the core containing a certain length of sheeting away from the general path of movement of the sheeting, (c) moving the empty core towards the general path of movement of the sheeting, (d) severing the sheeting and heat bonding the end of the running length of sheeting to the empty core, and (e) winding the running length of sheeting on the empty core.
  • the roll of sheeting is described later.
  • FIG. 1 is a partial over-all side view with some parts in section of the windup unit and severing unit showing (1) their relation to the accumulator unit, windup promotion means, etc. and (2) the various positions of the windup unit and severing unit during the automatic roll change.
  • FIG. 2 is a partial view of the windup unit and severing unit with some parts shown as cut-a-ways viewed from the general path of movement side of the windup unit.
  • FIG. 3 is a partial cross section of the severing end of the severing unit and core in position for severing the sheeting and heat bonding.
  • FIG. 4 is a partial cross section of the severing end of the severing unit and core in position during cooling after severing and heat bonding.
  • FIG. 5 is a partial cross section of the core containing layers of sheeting showing the bond of the end of the first adjacent layer of sheeting to the core.
  • FIGS. 6a and 6b are partial schematics and diagrammatics of the fluid pressure control, operating systems and cooperating machine components of a preferred apparatus embodying the principles of the invention.
  • Unit I is the accumulator unit which receives the sheeting from the processing unit (not shown).
  • the accumulator unit is utilized to collect the sheeting flowing from the processing unit and allow it to operate while the windup unit 3 and severing unit 4 are accomplishing the core change during which time the flow of sheeting to the windup unit is for the most part nonexistent.
  • Unit 2 which is in the general path of movement of the sheeting between the accumulator unit 1 and the windup unit 3 can be a number of or combinations of items including sheeting forwarding means, i.e., drive rolls; a slitter to trim the edge of the sheeting; and a series of rolls to produce the correct amount of tension in the sheeting and thereby promote windup.
  • sheeting forwarding means i.e., drive rolls
  • a slitter to trim the edge of the sheeting
  • a series of rolls to produce the correct amount of tension in the sheeting and thereby promote windup.
  • Unit 5 is a rider roll which is useful in promotion of windup. It lifts so as to be out of the general path of movement of the sheeting during the core change operation and does not go down to normal operating position until the empty core is in normal winding position.
  • the rider roll consists of the roll 6 and means for holding it and moving its position 7. The rider roll smooths the sheeting as it is placed on the roll and assists in providing the proper tension in the sheetingfor winding in the windup unit.
  • Unit 3 is the windup unit and comprises a rotating turret 8 moved by motor 9 and drive means 10, supported by and rotating with shaft 11 which is supported by bracket 12, supported by supporting frames 13 and 14.
  • the rotating turret 8 comprises two spindles 15 and 16'which contain air operated chucks 17 and 18 for holding the cores l9 and 20, 20 contains a certain predetermined length of sheeting and drive (21,22) means for rotating the chucks l8 and 19 which are driven by motors 23 and 24 held in position by motor mounts 25 and 26 on shaft 11.
  • the air operated chucks are operated by air lines 27, 28, 29 and 30, each air line being represented by a single line.
  • FIG. 1 indicates the 4 positions of the empty core or core containing a certain length of sheeting (full roll) during normal operation and during the severing and heat bonding of the sheeting.
  • Position 1 is where the full roll is when the core is in normal winding position (position 3).
  • the full roll at position 1 is dropped off at that point and replaced by an empty core ready to replace the core which is being filled in position 3.
  • the sequence of oeprations which occurs in the windup unit during a core change is discussed below and uses as its beginning point in the sequence as the point where the core is being filled as in position 3 and the previously filled full roll which was in position 1 has been replaced by an empty core.
  • the turret 8 rotates the core from position 3, 270, to position 2, thereby, placing the empty core in position 4.
  • the running length of sheeting after the 270 rotation is shown by line 31 which indicates that it overlaps the core 19 (empty) in position 4 and is still continuous with the sheeting on the core containing the certain length of sheeting in position 2.
  • the turret 8 rotates 90 such that the empty core with the running length of sheeting heat bonded to it is in position 3 and the roll containing the certain(predetermined) length of sheeting is in position 1 where it is to be replaced by an empty core.
  • Unit 4 is the severing unit which severs and heat bonds the sheeting to the empty core.
  • Supporting frame 32 and beam 33 support eyes 34 which in turn support shaft 35 which holds and allows arm 36 to move via air cylinder 37 which is operated by air lines 38.
  • the air cylinder 37 is supported by beam 33 and bracket 39 and is connected to arm 36 by connecting means 40.
  • Arm 36 holds among other things the severing member (wire) 41 and clamp 42 which is operated by air cylinders 53 fed by air lines 44 which are in turn fed by air supply 45.
  • the clamp 42 and severing member 41 are enclosed by rubber aprons 46 and 47.
  • Air supply 45 also feeds via lines 48 air jets which are not shown in FIG. 1. The rest of the description of the severing end of the severing unit is reserved for more detailed FIGS. 2, 3, and 4.
  • FIG. 1 indicates the two positions of the severing end of unit 4, i.e., the severing unit which are position A which is the position during normal winding and position. B which is the position during severing and heat bonding. In position B, the severing end of the severing unit is in operative association with the sheeting and empty core.
  • the heating means for the severing member 41 is not shown in any of the Figures and is a means for carrying current to severing member 41.
  • the severing end of the severing unit 4 is in position B part of the time when the core (empty) is in position 4 and the core containing a certain length of sheeting is in position 2.
  • the turret 8 is rotating or in position so the cores are in positions 3 and 1, the severing unit 4 is in position A.
  • FIGS. 3 and 4 give detailed depiction of the severing end of the severing unit while in position B.
  • FIG. 2 is a partial view of the windup unit 3 and severing unit 4 looked at from the path of movement of the sheeting.
  • the turret 8 is in position such that spindles 15, 15', 16 and 16 containing air chucks 17, 17, 18 and 18' fed by air lines 27, 28, 29, 30, 27, 28, 29 and 30 are situated with spindles 15 and 15 in position which corresponds to position 4 of FIG. 1 and 16 and 16' in position which corresponds to position 2 of FIG. 1.
  • the air chucks 17 and 17 are rotated by drive means 21, powered by motor 23 which is supported by motor mount 25.
  • Motor 24 powers drive means 22 which rotates air chucks 18 and 18.
  • the turret 8 is supported by and rotates with shaft 11, which rotates in bearing means 49 and 50, is supported by brackets 12 and 12 held by supporting frames 13, 13, 14 and 14', and is rotated by drive means 10 powered by motor 9.
  • Supporting frames 13, 14, 13 and 14' also support the severing unit 4 through support frame 32 and 32 and beam 33 which holds eyes 34 and 34' which support and allow shaft 35 to rotate.
  • Shaft 35 supports the arm 36 of the severing unit 4.
  • the arm 36 holds air cylinders 43, clamp 42, air jet 51, air line 44 to the air cylinders 43, air lines 48 to air jets 51, holding means for the severing member 52, severing member 41 and rubber aprons 46 and 47.
  • the air lines are supplied by air supply 45.
  • the arm 36 is moved to and from the severing and heat bonding position by connecting means 40 driven by air cylinder 37 supported by bracket 39.
  • the air cylinders 43 are attached via their plunger 53 to the clamp 42 and move the clamp into operative association with the sheeting and empty core during the severing and heat bonding of the sheeting to the core.
  • the clamp 42 extends the length of the severing member 41.
  • the clamp 42 and air jets 51 are shown in detail in FIGS. 3 and 4.
  • FIG. 3 is a cross section of severing end of the severing unit indicating its position at the point of severing and heat bonding.
  • the rubber aprons 46 and 47 enclose the clamp 42 which consists of a rubber layer 54 backed by a metal layer 55 and is attached to a plunger 53 from an air cylinder 43 which moves the clamp 42 in operative association with the sheeting 31 and core 19.
  • the clamp 42 holds the sheeting 31 in place during the severing and heat bonding.
  • the rubber aprons 46 and 47 also enclose the holding means 52 for the severing member 41, i.e., severing wire.
  • the holding means 52 is supported by support frame 56 while the air cylinder is supported by support frame 57.
  • the clamp 42 operated by the air cylinder 43 and its plunger 53 along with the support frame 56 and holding means 52 keep the severing member 41 in operative association with the sheeting and core, i.e., in contact with the sheeting core and sheeting during the severing and heat bonding of the sheeting.
  • the heating means for the severing member is electrical and is not shown.
  • FIG. 3 is the position of the severing end of the severing unit from the time the severing end of the severing unit is initially lowered to the sheeting and core until it is raised a small amount with the clamp holding its position for cooling. This position is shown in FIG. 4.
  • FIG. 4 depicts the aforesaid portion of the severing end of the severing unit.
  • the rubber aprons 46 and 47 enclose the clamp 42 consisting of the rubber layer 54 and metal backing layer 55 attached to the plunger 53 of the air cylinder which is not shown.
  • the formation of the solid bond is promoted by cooling from air which is provided by air jets 51 supported by support frame 57 with the flow of air shown as 58.
  • the flow of air continues on the heat bond and the severing end of the severing unit stays in the position depicted in FIG. 4 until it is indicated that the accumulator unit is'sufficiently full, i.e., about 75 percent full and then the cooling stops and the clamp 42 lifts while the entire severing end of the severing unit is moved away from the core 19.
  • the recently severed end of the sheeting 31" which is attached to the core containing a certain length of sheeting (not shown) drops away from the core 19 as soon as the severing is complete which is prior to the cooling via the air jets 51.
  • FIG. 5 is a partial cross section of a core 20, the first adjacent layer of thermoplastic sheeting 31 which has the tapered end 31 heat bonded to the core.
  • the tapered edge causes less stress at the point on the layers of sheeting 32" where they overlap the heat bonded, tapered end of the sheeting.
  • the entire roll of thermoplastic sheeting of which FIG. 5 is a partial cross section comprises (a) a core 20, (b) a first layer of sheeting immediately adjacent thereto 31, said first layer being heat bonded to said core by a heatbond 31' between at least a portion of the end of said first adjacent layer 31 and said core and (c) a plurality of layers 31' of sheeting continuous with and adjacent to said first layer.
  • the bond between the first layer and core is tapered to an extent that less than about 6 of the adjacent layers of sheeting overlapping said bond are stressed to such an extent at the point of overlap that there is a visible optical distortion relative to the remainder of the sheeting.
  • the tapering of the bond is normally accomplished by utilizing a severing member which has a solid cylindrical cross section although members with other cross sections can be utilized. Many sizes and shapes of severing members are useful but a particularly useful wire for 15 mil to 40 mil sheeting is about 0.1 inch diameter wire.
  • the composition of the core can vary and is not cirtical.
  • a preferred core is one which is annular and contains an inner and outer cardboard layer with a layer of aluminum between them.
  • the length of the core is not critical but normally runs from about 20 to about 45 inches with the preferred being about 30 inches.
  • the diameter of the core is also not cirtical but normally varies from about 3 to about 8 inches outside diameter.
  • the sheeting in the roll of sheeting is thermoplastic and can be many various types of sheeting.
  • the preferred types are polyvinyl butyral, plasticized polyvinyl chloride, polyurethane, ethylene/vinyl acetate copolymers and hydrolyzed ethylene/vinyl acetate copolymers.
  • the sheeting may be coated with powder such as sodium bicarbonate, potassium bicarbonate, etc. if the properties of the sheeting are such that it is necessary to allow the sheeting to be conveniently handled.
  • FIGS. 6a and 6b are a partial schematic of the control system, i.e., control means which causes each of the parts of the system described above to operate automatically in a sequential manner to form the above described rolls of sheeting.
  • FIGS. 6a and 6b show the position of the valves when the system is running at normal winding and is ready to begin an automatic roll change. This is evident by the diagrammatic representation of the rider roll 6 and its holding means 7 indicating that it is down in the normal winding position on top of the core being wound 20, held by spindle 16 which is in the normal winding position, position 3 of FlG. 1.
  • the cycle is entered at the point where the operator has just removed the full roll (core containing a certain (predetermined) length of sheeting) and replaced. it with an empty core, this being the only manual operation if the system is running on its automatic sequence; it is found that the first step in the cycle is the operator pushing spring-return air switch D1.
  • the pushing of D1 sends a surge of air pressure to R1, and air relay, which causes the arrow in R1 to shift so that air is flowing through R1 to P1, this will continue until the arrow of R1 is shifted back by air from spring-return air valve Tl which is actuated by a cam sequencer via Tls cam follower on the left side of valve T1.
  • T1 is supplied with air from air relay R which always has its arrow up during the normal automatic cycle.
  • the shifting of the arrows of R1 by T1 occurs shortly after the empty core 19 held by spindle reaches the cutting position indicated diagrammatically in FIG. 6b.
  • the air flowing through SV-l flows via .L to the accumulator to start it collecting the sheeting, via L to the sheet forwarding means between the accumulator and windup unit to stop its operation, and up to shuttle valve V1 which allows flow to the right but not to the left when there is air pressure from SV-l.
  • T3 has air flowing through it since the rider roll is up.
  • the rider roll has stopped since the piston 60 has come against a mechanical stop, the top of the cylinder 59 and is being held there by the preseure of the system.
  • the air through T3 flows to pressure-operated electrical switch PS-l which has electrical current to it from (1-1 which indicates the core contains a certain length of sheeting.
  • the pressure from T3 which indicates the rider roll is up (out of the general path of movement) causes the needle in PS-l to shift to the bottom position which gives electrical current flow through PS-l.
  • This causes an electrical signal H-l to cause the turret to rotate 270 in the direction such that the core containing a certain length of sheeting is moved away from the general path of movement of the sheeting while the empty core rotates 270 to a position under the severing unit.
  • the electrical signal H-l also causes the roll containing a certain length of sheeting to wind backwards paying out slack while it is moving from the general path of movement of the sheeting, the payed out sheeting overlaps the empty core when the movement is complete.
  • T3 also sends pressure to a spring-return air valve T5 which is cam operated. Since it is not operated until later in the cycle, air does not flow through T5.
  • Electrical current also flows through LS-2 to electrical limit switch LS-3 which causes current to flow through if one spindle is at the severing unit, and the contact follower is not contacted, this beingindicated to the electrical system via H-3. If the contact follower of LS-3 has contact, the needle moves to the right and indicates to the electrical system through H-4 via a flow of current that the other spindle is at the severing unit. This is necessary so that the electrical system will cause the correct core to rotate when winding is called for.
  • the current from LS-2 also causes switch SW to close indicating that all motors are off. This causes the arrow in SV-2 to be moved down and since SV-2 has an air supply from R2, air is supplied to spring-return air valve T6 which allows the air to flow to springreturn air valve T7. The air stops at T7 until its arrow is shifted by the cam sequencer.
  • Air also flows from SV-2 to air shuttle V3 and on to spring-return air valve T8 and air relay R6.
  • the air flowing to T8 causes its arrow to be shifted to the left which vents the left side of R6 via line II.
  • the air flowing from SV-2 to R6 causes its arrow to be shifted from brake 12 which is the brake on the cam sequencer to the left which causes the air to flow to air relay R7 which has its arrow to the left causing the cam sequencer to run at normal speed via line l3.
  • the first function of the cam sequencer is to contact the cam follower on spring-return air valve T9 which is supplied by R3, R3 having its arrow to the left.
  • T9s arrow is shifted to the right and air flows through air shuttles V4 and V5, through spring-return air valve T10 to pressure-operated electrical switch PS-2.
  • This causes the needle in the switch to come down and electrical current to flow via H- to the electrical system which causes the correct spindle motor via H-3 and H-4 to rotate the empty core so as to clean the powder off the sheeting which is overlapping the empty core as a result of the 270 rotation of it and the core containing a certain amount of sheeting via the turret.
  • This particular embodiment is concerned with winding sheeting covered with powder.
  • the spring on T9 causes the arrow to move back to the left after the lobe on the cam passes and then the rotation of the core ceases.
  • the cam sequencer actuates spring-return air valve T7 causing its arrow to shift left. This sends air through air shuttle V6 to air relay R8 causing the arrow in R8 to be shifted up causing air to flow into cylinder 37, pushing piston 61 down causing the severing unit to move down towards the core.
  • the severing end of the severing unit gets down to its proper position in operative association with the empty core and the sheeting which is overlapping it, its piston actuates the ball follower on spring-return air valve T11 which has its arrow shifted right causing air to flow first to air relays R9 and R10.
  • Air is also being supplied from T11 to pressureoperated electrical switches PS-3 and PS-4.
  • This causes the needle in PS-3 to shift down and start the means for heating the severing member heating via line H-6.
  • the needle in PS4 is also shifted down and this starts the dwell timer timing via 1-1-7.
  • the dwell timer via an electrical signal through G-2 causes the arrow in solenoid valve SV-3 to shift down. .
  • the heating of the severing member causes the sheeting to be severed, the newly severed end ofthe running length of sheeting to be heat bonded to the empty core, and the end of the sheeting which is attached to that wound on thecore containing a certain length of sheeting to drop away from the empty core.
  • Air from T11 is allowed to pass through spring-return air valve T13 when its cam follower is actuated by the cam sequencer immediately after the cam sequencer has finished actuating T7.
  • the air flowing through T13 is the air supply for solenoid valve SV-3.
  • the dwell timer causes the arrow in SV-3 to be in the down position until the dwell period has ceased indicating that heating is over via line G-2 from the electrical system.
  • T13 is actuated by the cam sequencer and air flows to SV-3 before the dwell period is over.
  • the arrow on SV-3 shifts up and air flows through air shuttle V7 to V16 and to the top of R8 causing the arrow in R8 to be shifted down and the air from the top of the cylinder 37 to be vented off.
  • the air flowing from the outlet of R9 also flows to air relay R11 which causes its arrow to shift down causing the cooling air jets to come on via 15.
  • the cooling blast of air is directed to the heat bond betweenthe sheeting and the core.
  • the air cooling continues until the accumulator trips the contact follower on spring-return air valve T14 which gets its air supply from the accumulator control system via U indicating the accumulator is full to a certain predetermined degree. This causes the.
  • Air from R12 also flows to R10 causing its arrow to be shifted up thereby causing the clamps to be opened via 16 and to R11, causing its arrow to be moved up to the top position thereby shutting off the cooling air jets.
  • a pulse of air also flows from R12 through air shuttle V5 through T10 and to PS-2 and causes its needle to be shifted down causing the core to rotate via H-5 and take up the slack in the sheeting. This is a predetermined amount set by the electrical system.
  • Air from R12 also flows via V3 to T8 and R6 to start the cam sequencer operating again via R7 at normal speed 13.
  • the cam sequencer was shut off by the above described second lobe on the cam sequencer for actuating T2 which actuated T2 during the cooling part of the cycle.
  • SV-2 lost its air when T1 was actuated as described above and therefore there was no resistance to T2 stopping the cam sequencer when it was actuated.
  • the electric current also flows to electrical limit switch LS- which indicates to the electrical system via H- or H-ll which spindle is in winding position. If it is one, it will cause the contact follower of LS-S to cause the needle to shift left and current to flow through H-10. If it is the other, the needle will stay as is, and the spindle will be indicated by l-l-l 1.
  • Electric current from LS-4 also flows to solenoid valve SV-4 which causes its needle to move down so that air flows through it to spring-return air valve T15.
  • the cam sequencer has moved the arrow in T to the right so air flows through it and through shuttle valve V9 to R4 thus causing its arrow to move back to the up position causing air to fill the upper portion of cylinder 59, pushing piston 60 down. This causes the rider roll 6 to move down.
  • SU is an air throw switch which puts the system in mode for a normal automatic repeat out if set so that the air flows from the top outlet line to spring-return air valve T17 which is actuated by the cam sequencer immediately after T1 is actuated. It allows for a repeat cut for a certain predetermined period.
  • the air from D2 also shifts the arrow in R7 to the right causing the cam sequencer to operate at accelerated speed via 17. Air passes from R7 through air shuttles V10 and V8 to put the arrows in the severing unit controls R9 etc. in position as though the normal cutting sequence is over, i.e., in their normal winding positions.
  • the air from D2 also causes R5 to have its arrow shifted down thus putting the rider roll on manual control via air switches D3 and D4.
  • the air from R5 also flows via Q to air switches D5 which flows through air shuttles V15 to D5 and D6 which allows for manual operation of the severing unit.
  • the manual control put on the rider roll and severing unit are on so that they will not operate while the cam sequencer is at overspeed.
  • the cam sequencer contacts spring-return valve T19 when the overspeed cycle is almost completed so that R7 is put back into position for normal operating speed and manual control is removed.
  • a safety device in the system is spring-return air valve T which is actuated by the cam sequencer and will cause the severing unit to come up if via T11 it is found that the core containing a certain amount of sheeting is in the severing position when the severing unit is lowered. This is possible because if T11 hasn't been actuated by the severing unit in the predetermined amount of time, T20 automatically lifts the severing unit. T11 can only be actuated if a core is at the cutting position.
  • the system can be run manually utilizing air switches D7, D8 (flowing through V11), D3, D4, D5, D6 and D1.
  • air switch D9 is used to reset to automatic after a manual run.
  • the air from D9 flows through air shuttle V12 to R3 and through air shuttle V13 to RS and R7, through air shuttle V10 and V8 to T8, R6, R9, R10 and R11 and through air shuttle V7 and V16 to R8.
  • the normal automatic sequence begins again when the accumulator indicates via T14 that it is full to a predetermined level.
  • the sequence of operation is the same as described above from that point except that PS-2 is not actuated, the severing unit is not operated (remaining in its normal winding position), andthe core rotates at its predetermined rate through its movement to the normal winding position and the lowering of the rider roll. Air from T16 causes the arrow in R13 to shift back to the right.
  • T21 is a safety device and is actuated, i.e., its arrow is shifted down when the accumulator is full as determined by the contact follower on spring-return air valve T21 which gets its air from the accumulator system via X.
  • the air from T21 passes through air shuttle V14 to PS-6 and starts the empty core rotating at overspeed via 1-1-12. If there has been a manual cut and start, T16 hasnt moved the arrow in R13 to the left and T21 has been actuated, the arrow in R13 will be moved to the leftby the air from T21.
  • a system for automatic handling a running length of thermoplastic sheeting from a processing unit to form a series of individual rolls comprising in combination and positioned along the general path of movement of the sheeting an accumulator unit cooperating with the processing unit;
  • windup promotion means cooperating with the sheet forwarding means
  • a windup unit cooperating with the windup promotion means, said windup unit comprising means for moving a core containing a certain length of sheeting away from the general path of movement of the sheeting and replacing said core containing a certain length of sheeting with an empty core after moving the core containing a certain length of sheeting away from the general path of movement of the sheeting thereby unwinding some sheeting from the core containing a certain length of sheeting and moving the empty core towards the general path of movement until the empty core overlaps the sheeting and is in position to engage a severing unit; a severing unit cooperating with windup unit and positioned along the general path of movement of the sheeting, said severing unit comprising in combination (a) a severing wire for severing the sheeting and heat bonding the end of the running length of sheeting to the empty core, (b) means for heating said severing wire, (c) means for moving said severing wire, ((1) means for holding the severing wire in operative

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
US00057678A 1970-07-23 1970-07-23 Apparatus for winding a running length of thermoplastic sheeting into a series of rolls Expired - Lifetime US3796388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5767870A 1970-07-23 1970-07-23

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US3796388A true US3796388A (en) 1974-03-12

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US00057678A Expired - Lifetime US3796388A (en) 1970-07-23 1970-07-23 Apparatus for winding a running length of thermoplastic sheeting into a series of rolls

Country Status (6)

Country Link
US (1) US3796388A (en:Method)
BE (1) BE770318A (en:Method)
CA (1) CA957353A (en:Method)
DE (1) DE2136726A1 (en:Method)
FR (1) FR2109670A5 (en:Method)
GB (1) GB1336786A (en:Method)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280669A (en) * 1980-01-21 1981-07-28 Magna-Graphics Corporation Automatic web rewinder for tensioned web
US4458852A (en) * 1981-06-05 1984-07-10 American Hoechst Corporation Web transfer apparatus
US4715552A (en) * 1986-04-23 1987-12-29 Kabushiki Kaisha Fuji Tekkosho Multi-spindle winder
US5221056A (en) * 1990-02-05 1993-06-22 Print-O-Tape, Inc. Pneumatically controlled spooling apparatus
US5383622A (en) * 1993-05-05 1995-01-24 The Kohler Coating Machinery Corporation Web transfer mechanism and method for a continuous winder
US5857641A (en) * 1997-06-03 1999-01-12 Kimberly-Clark Worldwide, Inc. Winding core having integral entangling mechanism
EP1061025A1 (en) * 1999-06-16 2000-12-20 E.I. Du Pont De Nemours And Company Apparatus and method for initiating the winding of webs
US6478247B2 (en) * 2000-07-18 2002-11-12 Mitsui Mining & Smelting Co., Ltd. Method for winding copper foil on core tube
US6629665B2 (en) * 2001-09-21 2003-10-07 Kabushiki Kaisha Tokyo Kikai Seisakusho Paper web feeder in rotary press
US9907706B2 (en) * 2011-02-25 2018-03-06 Curt G. Joa, Inc. Methods and apparatus for forming disposable products at high speeds with small machine footprint
US11325801B2 (en) 2015-10-13 2022-05-10 Curt G. Joa, Inc. Disposable product assembly systems and methods
CN117228395A (zh) * 2023-11-14 2023-12-15 常州金纬片板膜科技有限公司 一种片材储料架

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO790519L (no) * 1978-06-21 1979-12-27 Ahlstroem Oy Spiralviklet hylse, fremgangsmaate for fremstilling av hylsen, fremgangsmaate for anvendelse av hylsen i et vikleapparat og anordning for bruk av hylsen
CN108557530B (zh) * 2018-04-19 2019-09-27 广东邦达实业有限公司 一种适用于软质粘性橡胶条的自动收卷结构
CN117657852B (zh) * 2024-01-31 2024-04-02 山东永健机械有限公司 一种锂电池隔膜生产用拉伸成型装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195008A (en) * 1937-08-20 1940-03-26 Westinghouse Electric & Mfg Co Coiling reel
US2681771A (en) * 1952-10-16 1954-06-22 Black Clawson Co Web roll winder
US2860839A (en) * 1953-02-24 1958-11-18 Black Clawson Co Web winding machine
US3091411A (en) * 1960-03-21 1963-05-28 Dow Chemical Co Cutoff mechanism for a film rewinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195008A (en) * 1937-08-20 1940-03-26 Westinghouse Electric & Mfg Co Coiling reel
US2681771A (en) * 1952-10-16 1954-06-22 Black Clawson Co Web roll winder
US2860839A (en) * 1953-02-24 1958-11-18 Black Clawson Co Web winding machine
US3091411A (en) * 1960-03-21 1963-05-28 Dow Chemical Co Cutoff mechanism for a film rewinder

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280669A (en) * 1980-01-21 1981-07-28 Magna-Graphics Corporation Automatic web rewinder for tensioned web
US4458852A (en) * 1981-06-05 1984-07-10 American Hoechst Corporation Web transfer apparatus
US4715552A (en) * 1986-04-23 1987-12-29 Kabushiki Kaisha Fuji Tekkosho Multi-spindle winder
US5221056A (en) * 1990-02-05 1993-06-22 Print-O-Tape, Inc. Pneumatically controlled spooling apparatus
US5383622A (en) * 1993-05-05 1995-01-24 The Kohler Coating Machinery Corporation Web transfer mechanism and method for a continuous winder
US5857641A (en) * 1997-06-03 1999-01-12 Kimberly-Clark Worldwide, Inc. Winding core having integral entangling mechanism
EP1061025A1 (en) * 1999-06-16 2000-12-20 E.I. Du Pont De Nemours And Company Apparatus and method for initiating the winding of webs
WO2000076895A1 (en) * 1999-06-16 2000-12-21 E.I. Dupont De Nemours And Company Apparatus and method for initiating the winding of webs
US6676064B1 (en) * 1999-06-16 2004-01-13 Du Pont Tejin Films, Uk, Ltd. Apparatus and method for initiating the winding of webs
US6478247B2 (en) * 2000-07-18 2002-11-12 Mitsui Mining & Smelting Co., Ltd. Method for winding copper foil on core tube
US6629665B2 (en) * 2001-09-21 2003-10-07 Kabushiki Kaisha Tokyo Kikai Seisakusho Paper web feeder in rotary press
US9907706B2 (en) * 2011-02-25 2018-03-06 Curt G. Joa, Inc. Methods and apparatus for forming disposable products at high speeds with small machine footprint
US11325801B2 (en) 2015-10-13 2022-05-10 Curt G. Joa, Inc. Disposable product assembly systems and methods
CN117228395A (zh) * 2023-11-14 2023-12-15 常州金纬片板膜科技有限公司 一种片材储料架
CN117228395B (zh) * 2023-11-14 2024-01-19 常州金纬片板膜科技有限公司 一种片材储料架

Also Published As

Publication number Publication date
BE770318A (fr) 1971-12-01
CA957353A (en) 1974-11-05
FR2109670A5 (en:Method) 1972-05-26
GB1336786A (en) 1973-11-07
DE2136726A1 (de) 1972-01-27

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