EP0668231B1 - Appareil et méthode pour alimenter une feuille pour recouvrir un tissu dans une machine de coupe - Google Patents

Appareil et méthode pour alimenter une feuille pour recouvrir un tissu dans une machine de coupe Download PDF

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Publication number
EP0668231B1
EP0668231B1 EP95101074A EP95101074A EP0668231B1 EP 0668231 B1 EP0668231 B1 EP 0668231B1 EP 95101074 A EP95101074 A EP 95101074A EP 95101074 A EP95101074 A EP 95101074A EP 0668231 B1 EP0668231 B1 EP 0668231B1
Authority
EP
European Patent Office
Prior art keywords
fabric
cutting
covering sheet
support plane
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95101074A
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German (de)
English (en)
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EP0668231A3 (fr
EP0668231A2 (fr
Inventor
Toshiaki Morita
Akihiro Otani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shima Seiki Mfg Ltd
Original Assignee
Shima Seiki Mfg Ltd
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Publication date
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Publication of EP0668231A2 publication Critical patent/EP0668231A2/fr
Publication of EP0668231A3 publication Critical patent/EP0668231A3/fr
Application granted granted Critical
Publication of EP0668231B1 publication Critical patent/EP0668231B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction

Definitions

  • the present invention relates to an air-impermeable fabric covering sheet feeding apparatus and a method for feeding an air-impermeable covering sheet to cover surface of a stack of fabric while entering into a cutting machine, which is used for cutting parts from a sheet material like fabric, cloth and so on according to cutting data.
  • the fabric to be cut is put on a cutting table, and is held from below by vacuum sucking, and is cut in the contour of parts or the like according to the cutting data by a cutter movable freely on the cutting table.
  • the fabric to be cut is generally not air-impermeable, and therefore the fabric cannot be held sufficiently only by putting it on the cutting table. Accordingly, the fabric is covered with an air impermeable sheet so that the fabric can be hold by vacuum clamping securely.
  • the fabric covering sheet for example, synthetic resin films of polyethylene, vinyl chloride, and the like are used.
  • EP-A-0 578 903 there is disclosed a feeding apparatus for feeding an air-impermeable sheet to cover surface of a stack of fabric while entering into an automatic cutting machine, which cuts out parts from the fabric according to cutting data, while sucking and holding the fabric on a cutting support plane of a cutting table constructed as a conveyor, the fabric stacked by a cloth spreading machine.
  • the apparatus further comprising supporting means for supporting a covering sheet roll, being set upright on both sides in the widthwise direction of the automatic cutting machine at the fabric entry side into the cutting support plane and delivering means for letting out the covering sheet from the roll supported by the supporting means, following entry of the fabric into the cutting support plane of the cutting table constructed as conveyor.
  • FIG. 14 shows a simplified prior art feeding apparatus disclosed in JP(B2) 62-25785 (1987).
  • a cutting machine 1 includes a cutting table comprising a processing table 2, an upstream side transfer table 3, and a downstream side transfer table 4.
  • a cutting carriage 5 can move and travel on rails 2a, 3a, 4a provided at both sides in the widthwise direction of the processing table 2 and transfer tables 3, 4.
  • the cutting carriage 5 has a cutting head 6 movable on the cutting carriage 5 in the widthwise direction, and is provided with a cutter 6a for cutting the fabric.
  • a label carriage 7 can move and travel, same as the cutting carriage 5, on the rails 2a, 3a, 4a provided at both sides of the processing table 2 and transfer tables 3, 4.
  • the label carriage 7 is provided with a function of adhering a label to the fabric for identifying the parts when moving and traveling.
  • the label carriage 7 includes a pinching device 8 for pinching a fabric sheet or the like.
  • a cutting device 9 is provided above the vicinity of the boundary of the processing table 2 and the upstream side transfer table 3.
  • a fabric sheet roll 10 and a fabric covering sheet roll 11 are pivotedly supported.
  • the pinching device 8 disposed on the label carriage 7 pinches the front end of the fabric sheet unrolled from the fabric sheet roll 10, and spreads the fabric sheet on the processing table 2 by a specified length while moving from the transfer table 3 to the processing table 2.
  • a laminated sheet 12 is formed on the processing table 2.
  • the pinching device 8 of the label carriage 7 pinches the front end of the fabric covering sheet unrolled from the covering sheet roll 11, and covers on the laminated sheet 12 placed on the processing table 2.
  • an automatic cutting machine including a cutting table of a conveyor drive type as disclosed, for example JP-A 5-69382 (1993)
  • the cost of the cutting table is relatively high.
  • the automatic cutting machine with cutting table of a conveyor drive type no mechanism for spreading sheet materials is provided, and covering the sheet with an air-impermeable sheet must be done manually.
  • the fabric covering sheet wound in a roll is pivotedly supported by posts set upright from both sides in the widthwise direction, and an operator lets out the fabric covering sheet to cover the fabric when necessary, for example, when loading a fabric to be cut. To cover the fabric sufficiently, it is necessary that two operators work from both sides of the fabric.
  • a feeding apparatus for feeding an air-impermeable sheet to cover surface of a stack of fabric while entering into an automatic cutting machine as set out in claim 1.
  • the air-impermeable fabric covering sheet roll is supported by the support means set upright on the both sides in the widthwise direction of the automatic cutting machine, at the entry side of the fabric to the cutting support plane of the cutting table constructed as a conveyor.
  • the delivering means lets out the fabric covering sheet from the roll along with the entry of the fabric into the cutting support plane of the cutting table constructed as a conveyor.
  • the surface of the fabric is automatically covered with the covering sheet.
  • the fabric entering from the cloth spreading machine is detected by the detecting means, and the conveyor is driven and covering sheet is let out from the delivering means in relation with the discharge speed of the cloth spreading machine by the control means. Consequently, while operating the cloth spreading machine and the automatic cutting machine consecutively, the covering sheet can be automatically supplied on the fabric.
  • the fabric Since the fabric is covered with the covering sheet while leading and guiding, by letting out, for example, almost in synchronization with the entry speed of the fabric or slightly in delay, the supply of covering sheet may be easily automated.
  • the covering sheet being let out from the delivering means is led and guided in the conveying direction of the cutting support plane driven as the conveyor, so that the covering sheet may be smoothly supplied without forming creases on the delivered fabric.
  • leading and guiding of the covering sheet let out by the delivering means is effected by blowing air from below the cutting support plane in the conveying direction of the cutting support plane as the conveyor.
  • the fabric is conveyed by making use of blown air at the time of entry of the fabric onto the cutting support plane.
  • the air blow may be also utilized in leading and guiding of the covering sheet. It is in the period until the front end of the fabric is fed onto the conveyor that the necessity of leading and guiding the covering sheet is particularly high, and in such period it is possible to lead and guide the covering sheet sufficiently by blowing air.
  • the covering sheet being let out is led and guided in the direction of the cutting support plane while contacting with the leading means. Since the covering sheet is handled by contacting with the leading means, the covering sheet can be led and guided securely.
  • the sheet material is led and guided by driving the cutting support plane as a conveyor while sucking the cutting support plane from beneath. Since the covering sheet is air-impermeable, the suction force on the cutting support plane is large, and the covering sheet is pulled by conveyor drive and is hence easily led and guided.
  • the covering sheet is led and guided by blowing air from below the entry route of the fabric.
  • the air blow function provided for the purpose of entry of fabrics can be also utilized.
  • the cloth spreading machine capable of discharging the spread fabric may be installed at the upstream side of the fabric entry route, and the cloth spreading machine and the automatic cutting machine are interlocked according to the cutting data, and the spread fabric is fed to the cutting support plane while being sucked on the cutting support plane and fed, and the covering sheet may be supplied automatically so as to cover the entire surface of the fabric.
  • the covering sheet When entering the fabric onto tie cutting support plane, the covering sheet is let out by conveyor driving of the cutting support plane, and the covering sheet is automatically fed to cover the surface of the fabric with the covering sheet. At the time when the fabric is delivered onto the cutting support plane, it is already covered with covering sheet, so that cutting can be started immediately.
  • the terminal end of the covering sheet covering the surface of the fabric can be automatically cut off by cutting means.
  • the covering sheet is led and guided in the conveying direction of the cutting support plane of the cutting table constructed as a conveyor, the fabric surface can be smoothly covered when the fabric is carried in.
  • the covering sheet is led and guided in the driving direction of the cutting support plane of the cutting table constructed as a conveyor by the air blown from beneath.
  • an air table is provided for sending the fabric into the entry route of the fabric, its constitution may be effectively utilized also in leading and guiding of the covering sheet.
  • the leading means can securely lead and guide the covering sheet in the direction of the cutting support plane while contacting with the covering sheet.
  • the covering sheet While letting out the covering sheet from the covering sheet roll in relation to the delivery speed of the fabric, the covering sheet is led and guided in the direction of the cutting support plane, and the fabric is covered with the covering sheet.
  • the fabric is sent onto the cutting support plane of the cutting table constructed as conveyor, it is smoothly covered with covering sheet, so that the covering sheet may be supplied automatically without requiring manual operation.
  • the delivered covering sheet By blowing air from the fabric entry route, the delivered covering sheet may be led and guided.
  • an air blow mechanism is provided as an air table or the like for sending in the fabric, it may be effectively utilized in leading and guiding of covering sheet.
  • Fig. 1 shows a constitution of essential parts of a feeding apparatus for feeding a covering sheet into an automatic cutting machine according to an embodiment of the invention.
  • a cutting machine 21 cuts off laminated sheet 22, which is formed by stacking up fabric sheets, in a state of being covered with an air-impermeable fabric covering sheet 23.
  • the laminated sheet 22 is formed by a cloth spreading machine on the upstream side, and conveyed on an air table 24 to be supplied onto a cutting support plane 37 of a cutting table 25.
  • a feeding device 26 for feeding the fabric covering sheet 23 onto the laminated sheet 22 in the midst of being conveyed.
  • a pair of supporting rollers 27, 28 are provided inside the feeding device 26, a pair of supporting rollers 27, 28 are provided.
  • Beneath the supporting rollers 27, 28, a delivering roller 29 for letting out the fabric covering sheet 23 is provided.
  • a pressing roller 30 is provided for pressing the fabric covering sheet 23 to the delivering roller 29.
  • a covering sheet roll 31 is placed on the support rollers 27, 28.
  • Beneath the delivering roller 29, a cutting device 32 is provided, and further beneath the cutting device 32 is provided a fabric sensor 33 for detecting the laminated sheet 22 supplied from the upstream side.
  • the air table 24 has plural air nozzles 34, and air is blown out obliquely upward as indicated by arrow 34a toward the side of the cutting table 25.
  • the air nozzles 34 are arranged in a zigzag form at specific intervals in the air table 24.
  • the cutting table 25 is constituted so that the laminated sheet 22 placed thereon and the parts cut from the sheet can be transferred by a conveyor 35.
  • the conveyor 35 has plural bristle brushes 36 on the surface, and the top ends of the bristle brushes 36 form a cutting support plane 37.
  • the bristle brushes 36 are air-permeable, and communicate with a suction chamber 39 which is sucked and evacuated by a suction motor 38.
  • the cutting device 32 has rails 40 disposed beneath the delivering roller 29.
  • the rails 40 are extended in the widthwise direction of the cutting machine 21, together with the support rollers 27, 28 and delivering rollers 29, that is, in the direction vertical to the sheet of paper in Fig. 1. They are supported at both sides in the widthwise direction by posts 26a set upright from both of near and far sides of the air table 24.
  • a cutter stand 41 can travel along the rails 40.
  • Fig. 2 is a front view of the cutting device 32
  • Fig. 3 is a partial plan view thereof
  • Fig. 4 is a partial right side view thereof.
  • the post 26a is the far side one in Figs. 1 and 2.
  • Figs. 3 and 4 show the near side post 26a.
  • the cutter stand 41 has a blade 42 for cutting and a push-up cam 43.
  • the push-up cam 43 pushes up a follower roller 45 provided at one end of a lever 44 at one end of the rails 40, and pushes the fabric covering sheet 23 to the side of the rails 40 by the front end 44a of the lever 44.
  • a running roller 46 guided on the rails 40 is pivotedly supported, and connected with a drive belt 47.
  • the drive belt 47 is supported by a supporting pulley 48 provided on the posts 26a.
  • a position sensor 49 is a proximity sensor, and is attached to one end of the rails 40 via a sensor mounting plate 49a.
  • the rails 40 are supported with brackets 50 at both ends.
  • the lever 44 can be oscillatorily displaced about an axis 51a set up on a lever mounting stand 51.
  • One arm of the lever 44 at follower roller 45 side is thrust to the side of the rails 40 by a spring 51b.
  • the front end 44a is pressed to the side of the rails 40 by the push-up cam 43.
  • the front end 44a restrains the fabric covering sheet 23 by pressing down to the side of the rails 40 at the initial stage of cutting in order to cut the fabric covering sheet 23 with the blade 42.
  • the restraint state of the fabric covering sheet 23 is released, but subsequent cutting becomes easy because cutting has been partly conducted.
  • the restraint state is also released when the cutter stand 41 is at the stand-by position on one end, and when the fabric covering sheet 23 is pulled from the cutting table 25 side or when the fabric covering sheet roll 31 is replaced, the fabric covering sheet 23 can be freely pulled out or rolled.
  • the pressing state and release state of the lever 44 are indicated by twin dot chain line and solid line in Fig. 3, respectively.
  • Fig. 5 and Fig. 6 show a constitution relating to driving of the delivering roller 29.
  • Fig. 5 is a view from the back side of Fig. 1
  • Fig. 6 is a view from the left side of Fig. 5.
  • a gear for speed reduction is incorporated into a delivering motor 52, and a pulley 53 is provided at the output shaft of the delivering motor 52.
  • a rotary drive force is transmitted from the pulley 53 through a belt 54, to a pulley 55 provided on the shaft of the delivering roller 29.
  • a cutting motor 56 for running the cutter stand 41 along the rails 40 also rotates and drives a pulley 48 by a belt, and transmits driving force to a drive belt 47.
  • Fig. 7 shows a system configuration in which a cloth spreading machine capable of automatically discharging the spread fabric is installed on the upstream side of the cutting machine 21 of the embodiment.
  • the cutting machine 21 has a cutting carriage 57 capable of moving on the cutting table 25 in the X-direction, namely the lateral direction in Fig. 7.
  • the cutting carriage 57 is provided with a cutting head 58 which is capable of moving in the Y-direction vertical to the sheet of paper of Fig. 7 and provided with a blade for cutting the fabric.
  • the cutting machine 21 is controlled as being interlocked with a cloth spreading machine 60, by an integrated control device 59 for controlling comprehensively.
  • the integrated control device 59 is connected with a cutting design system, production control system, or the like, through an on-line circuit to form a network.
  • the fabric covering sheet 23 is supplied onto the delivered laminated sheet 22.
  • a fabric covering sheet 23a is supplemented between a roll 57a provided on the cutting carriage 57, and a stand 25a on the terminal end of the cutting table 25. This is conducted in order to further cover the laminated sheet 22 with an air-impermeable fabric covering sheet 23a to securely hold by reason that the laminated sheet 22 becomes air-permeable when the air-impermeable covering sheet 23 is cut together with the laminated sheet 22.
  • the cloth spreading machine 60 has a spreading carriage 62 capable of running in the lateral direction in Fig. 7 on a spreading table 61.
  • the spreading carriage 62 mounts a fabric sheet roll 63, pulls out the fabric sheet paid off from a lifter 64, and spreads by a specified length on the spreading table 61.
  • a cutter is incorporated in the lifter 64, and the fabric sheet pulled out by the specified length is cut off.
  • the fabric sheets are stacked up, and the lifter 64 ascends according to the lamination height.
  • the laminated sheet 65 is formed on the spreading table 61.
  • the fabric sheet if being a soft material or a coarse material, may be pierced through the top end of the bristle brushes 36 forming the cutting support plane 37 of the cutting table 25, and therefore an underlaying sheet 66 is laid.
  • the underlaying sheet 66 is made of craft paper or the like perforated at specific intervals, and is generally larger in area than the laminated sheet 64.
  • the spreading carriage 62 also comprises capturing means which is realized by a foot presser 67 or the like.
  • the foot presser 67 can be displaced vertically by a cylinder 68. Air is blowing from the lower surface of the spreading table 61 for the purpose of facilitating discharge of the spread laminated sheet 65.
  • the spreading carriage 62 runs to move to a specific position on the basis of the beginning of the laminated sheet 65, and the surface of the underlaying sheet 66 is pressed and captured by the foot presser 67.
  • the spreading carriage 62 is advanced with air injected from beneath, the laminated sheet 65 mounted on the underlaying sheet 66 can be discharged to the side of the cutting table 25 of the cutting machine 21.
  • the underlaying sheet 66 is supplied from a underlaying sheet roll 69, and is spread on the spreading table 61 prior to spreading by utilizing the foot presser 67 of the spreading carriage 62. Meanwhile, discharging may be effected by employing a spreading table 61 with a conveyor drive system like the cutting table 25.
  • Fig. 8 shows an electrical constitution for controlling the system of Fig. 7.
  • the cutting machine 21 has a central processing unit 70 comprising a microcomputer and others, which controls the cutting carriage 57, cutting head 58, conveyor 35, suction motor 38, air table 24, and feeding device 26. In this control, the entry fabric detection signal from the fabric sensor 33 in the feeding device 26 is utilized.
  • the integrated control device 59 controls the cutting machine 21, a blower motor 72 for blowing air to the spreading table 61, and the spreading carriage 62, according to cutting and spreading data 71 created by a computerized design system.
  • the spreading carriage 62 also comprises a central processing unit 80 comprising a microcomputer and others, which controls a carriage running motor 82, a cloth releasing motor 83, a delivering motor 84, the lifter 64 in its vertical motion, a cutter 85 built in the lifter 64, and the cylinder 68 of the foot presser 67, in response to the signal from a carriage position detector 81.
  • a central processing unit 80 comprising a microcomputer and others, which controls a carriage running motor 82, a cloth releasing motor 83, a delivering motor 84, the lifter 64 in its vertical motion, a cutter 85 built in the lifter 64, and the cylinder 68 of the foot presser 67, in response to the signal from a carriage position detector 81.
  • Fig. 9 shows a schematic operation of the system in Fig. 7.
  • Cloth spreading starts at step a1, and ends at step a2.
  • the spreading carriage 62 is moved to a capture position, and at step a4, by operating the cylinder 68, a laminated sheet 65 is captured by the foot presser 67.
  • the blower motor 74 air is blown from the lower side of the spreading table 61.
  • the spreading carriage 62 is caused to travel to the side of the cutting machine 21 to be advanced to convey the laminated sheet 65.
  • the fabric sensor 33 of the feeding device 26 detects the front end of the laminated sheet conveyed from the spreading machine.
  • step a8 operating the delivering motor 52, the covering sheet 23 is let out.
  • step a9 operating the air table 24, air is blown from the air nozzle 34, and the conveyor 35 is operated to actuate the suction motor 38 while driving the conveyor, thereby evacuating and sucking.
  • the laminated sheet 22 are held on the cutting support plane 37 in a state that the surface of the laminated sheet 22 is covered with the fabric covering sheet, thereby cutting off at step a10 being enabled.
  • Fig. 10 further describes the operation in relation to each element composing the system in Fig. 7, on the basis of a time axis in the vertical direction.
  • the spreading carriage 62 of the spreading machine 60 stands by at the origin which is a reference position.
  • the underlaying sheet roll 69 is set.
  • the cylinder 68 is manipulated to descend, and the foot presser 67 is turned on.
  • the foot presser 67 captures the underlaying sheet, and at step b4 let the spreading carriage 62 travel and move, and then the underlaying sheet is carried in at step b5.
  • the underlaying sheet 66 is carried in by a specified length
  • the cylinder 68 is raised at step b6, and the foot presser 67 is turned off.
  • step b7 spreading the fabric sheet is carried out.
  • the spreading carriage 62 stands by at a predetermined position. This predetermined position is a position where the spread-and-laminated fabrics are captured.
  • the cylinder 68 is lowered, and the foot presser 67 is turned on.
  • the spreading carriage 62 is caused to travel.
  • the spreading carriage 62 stops at step b12, and the cylinder 68 is raised and the foot presser 67 is turned off at step b13.
  • step b14 the spreading carriage 62 returns to the origin and stands by.
  • step b1 in the cutting machine 21 at step b20, the cutting carriage 57 and cutting head 58 are left in a standby state at a predetermined origin position of the cutting machine.
  • the covering sheet roll 31 is set at step b21, the pressing roller 30 is opened at step b22, the fabric covering sheet 23 is suspended between the support rollers 27, 28 at step b23, and the pressing roller 30 is closed at step b24.
  • step b30 an entry switch provided in the cutting machine 21 is turned on, and air is blown out of the air table 24 at step b31.
  • step b32 the delivering roller 29 is rotated by the delivering motor 52, and the fabric covering sheet 23 is let out.
  • step b33 when the fabric covering sheet 23 is let out to such a length as to cover the entire surface of the air table 24, the delivering roller 29 is stopped. In the air table 24, since air is being blown toward the cutting table 25, the front end of the delivered fabric covering sheet 23 is led and guided toward the cutting table 24 and the fabric covering sheet 23 in an inclined state.
  • the suction motor 38 is driven to start sucking, and the conveyor 35 is activated.
  • the fabric sensor 33 of the feeding device 26 When the laminated sheet 65 is discharged from the cloth spreading machine 60 side to enter to the cutting machine 21 side, it is detected by the fabric sensor 33 of the feeding device 26.
  • the delivering roller 29 is rotated in relation with conveying of the conveyor 35, and the fabric covering sheet 23 is further let out.
  • the letting -out speed is set to be smaller than, preferably equal to the entry speed.
  • the laminated sheet 22 is transferred on the conveyor 35, and the entry conveying is completed when the front end of the laminated sheet 22 reaches the predetermined position at step b37, and the conveyor 35 stops at step b38. Upon completion of entry of the laminated sheet 22, covering with the fabric covering sheet 23 is automatically completed, thereby making it ready to cut off.
  • the laminated sheet 22 and fabric covering sheet 23 are sucked in vacuum and held on the conveyor 35 in a stopped state. Cutting is executed by using the cutting head 58, which is standing by at the origin from step b20. During or after cutting, at step b41, the rear end of the fabric covering sheet 23 is cut off by the cutting device 32. In the case of continuous fabric cutting, meanwhile, the fabric covering sheet 23 is not cut off until the final fabric cutting is over. At step b42, the conveyor 35 is driven to discharge the cut laminated sheet 22.
  • step b33 the fabric covering sheet 23 is let out longer than the length required for covering the entire air table 24, and at step b34 the front end of the fabric covering sheet 23 is sucked by the cutting table 25 at step b35 to start the conveyor 35, so that the fabric covering sheet 23 is led and guided by the conveyor 35 and set in stretched state.
  • a one-way clutch is provided on the shaft of the delivering roller 29, and the clutch is disengaged by the rotation in let-out direction.
  • Fig. 11 shows a constitution of an other embodiment of the invention.
  • the parts corresponding to the embodiment in Fig. 1 are identified with the same reference numerals.
  • a cutting table 85 does not comprise such an air table 24 as used in the embodiment in Fig. 1, and a conveyor 35 is provided in almost all the extent of the cutting table 85.
  • a front end of fabric covering sheet 23 let out from a feeding device 26 is sucked on the surface of the conveyor 35, and the conveyor 35 is driven to lead and guide the fabric covering sheet 23.
  • Delivered laminated sheet is immediately sucked in vacuum to be held on the conveyor 35, and is continuously sent on the conveyor 35, while being covered with the supplied fabric covering sheet 23.
  • Fig. 12 and Fig. 13 show the constitutions relating to the pressing roller 30 in both of the embodiments in Fig. 1 and Fig. 11.
  • the pressing roller 30 is provided in order to let out the fabric covering sheet 23 securely by the delivering roller 29.
  • the above-mentioned one-way clutch is provided on a shaft 91 of the pressing roller 30, and is pivoted on the free end of an arm 92, thereby pressing the fabric covering sheet 23 to the delivering roller 29 side by its own gravity.
  • Fig. 12 shows the pressing-and-closing state of the pressing roller 30.
  • the pressing roller 30 When setting a new covering sheet roll 31, the pressing roller 30 is put to be apart from the delivering roller 29 as shown in Fig. 13. This is manually operated, and in a state released from pressing as shown in Fig.
  • the gravity of the pressing roller 30 works on the right side of a fulcrum 93 of the base end portion of the arm 92 in Fig. 13, and therefore the open state released from pressing is maintained unless external force is applied.
  • a spring 94 is provided in order to facilitate the manual operation.
  • the foregoing embodiments do not particularly comprise any mechanism for leading and guiding the delivered fabric covering sheet 23 in the feeding device 26, but a slant plate or the like may be provided beneath the cutting device 32 so as to lead and guide the fabric covering sheet 23 to the cutting table 25 side by contacting with the fabric covering sheet 23 dropping downward in the vertical direction.
  • a slant plate or the like may be provided beneath the cutting device 32 so as to lead and guide the fabric covering sheet 23 to the cutting table 25 side by contacting with the fabric covering sheet 23 dropping downward in the vertical direction.
  • an air injection nozzle or a small fan may be provided in the feeding device 26, and the fabric covering sheet 23 let out by air may be led and guided to the cutting table side.
  • the feeding device 26 may also run on the cutting table synchronously with the entry of the fabric.

Claims (10)

  1. Appareil d'alimentation servant à amener une feuille imperméable à l'air (23) pour couvrir la surface d'une pile de tissu (22) pénétrant dans une machine de coupe automatique (21), qui découpe des pièces du tissu (22) conformément à des données de coupe, tout en aspirant et en retenant le tissu (22) sur un plan de support de coupe (37) d'une table de coupe (25) construite comme un transporteur (35), le tissu (22) étant empilé par une étaleuse de tissu (60) placée du côté d'entrée en amont de la machine de coupe automatique, l'appareil comprenant:
    un moyen de support (26a) pour supporter un rouleau (31) de feuille de couverture, placé vertical des deux côtés dans le sens de la largeur de la machine de coupe automatique (21) du côté d'entrée du tissu sur le plan de support de coupe (37);
    un moyen de distribution (26) pour dérouler la feuille de couverture (23) du rouleau (31) supporté par le moyen de support (26a), après entrée du tissu (22) sur le plan de support de coupe (37) de la table de coupe (25) construite comme un transporteur (35);
    un moyen de détection (33) pour détecter le tissu placé du côté d'entrée en amont de la machine de coupe automatique (21); et
    un moyen de commande (59) pour commander l'entraínement du transporteur (35) de la table de coupe (25) comprenant le plan de support de coupe (37) et la distribution de la feuille de couverture de tissu (23) par le moyen de distribution (26), relativement à la vitesse de sortie de l'étaleuse de tissu (60), lorsque le tissu (22; 65) est détecté par le moyen de détection (33).
  2. Appareil d'alimentation selon la revendication 1, dans lequel un moyen de coupe (32) pour couper la feuille de couverture (23) déroulée est placé sous le moyen de distribution (26).
  3. Appareil d'alimentation selon la revendication 2, dans lequel le moyen de coupe (32) comprend:
    un rail (40) agencé dans le sens de la largeur de la machine de coupe automatique (21);
    une lame (41) susceptible de se déplacer en va-et-vient sur le rail (40); et
    un levier (44) placé au niveau d'au moins une extrémité du rail (40), pour retenir la partie de bord extrémal afin de faire une marque de coupe dans la feuille de couverture de tissu (23), en coopération avec le déplacement de la lame (41).
  4. Appareil d'alimentation selon l'une quelconque des revendications précédentes, comprenant en outre un moyen de guidage et d'amenée pour amener et guider la feuille de couverture de tissu (23) déroulée par le moyen de distribution (26) dans la direction de transport du plan de support de coupe (37) de la table de coupe (25) construite comme un transporteur (35).
  5. Appareil d'alimentation selon la revendication 4, dans lequel le moyen d'amenée et de guidage amène et guide la feuille de couverture de tissu (23) par soufflage d'air depuis le dessous du moyen de distribution (26) dans la direction du plan de support de coupe (37).
  6. Appareil d'alimentation selon la revendication 4, dans lequel le moyen d'amenée et de guidage amène et guide la feuille de couverture de tissu (23) dans la direction du plan de support de coupe (37) par contact avec la feuille de couverture de tissu (23) déroulée.
  7. Appareil d'alimentation selon l'une quelconque des revendications précédentes, dans lequel l'étaleuse de tissu (60) et la machine de coupe automatique (21) sont agencées en une configuration linéaire continue.
  8. Procédé d'alimentation destiné à amener une feuille imperméable à l'air (23) pour couvrir la surface d'une pile de tissu pénétrant dans une machine de coupe automatique (21), qui découpe des pièces du tissu conformément à des données de coupe, tout en aspirant et en retenant le tissu sur un plan de support de coupe (37) d'une table de coupe (25) construite comme un transporteur (35), le tissu étant empilé par une étaleuse de tissu (60) placée du côté d'entrée en amont de la machine de coupe automatique, et le procédé comprenant les étapes consistant à:
    monter un rouleau (31) de feuille de couverture de tissu au-dessus du trajet d'entrée du tissu sur le plan de support de coupe (37) de la table de coupe (25);
    dérouler la feuille de couverture de tissu (23) du rouleau (31);
    couvrir le tissu avec la feuille de couverture de tissu (23) déroulée, à une vitesse de distribution en rapport avec la vitesse d'entrée du tissu, tout en amenant et en guidant la feuille de couverture de tissu (23) déroulée sur le plan de support de coupe (37) de la table de coupe (25);
    détecter le tissu placé du côté d'entrée en amont de la machine de coupe automatique (21);
    les conditions d'étalage et de coupe étant fixées conformément aux données de coupe; et
    l'étaleuse de tissu (60) et la machine de coupe automatique (21) coopérant conformément aux conditions d'étalage et de coupe prédéfinies, pour que la feuille de couverture de tissu (23) soit amenée de façon à couvrir toute la surface du tissu, tandis que le tissu étalé est déchargé de l'étaleuse de tissu (60) vers le plan de support de coupe (37) de la table de coupe (25) et aspiré sur le plan de support de coupe (37).
  9. Procédé d'alimentation selon la revendication 8, dans lequel l'amenée et le guidage sont effectués par entraínement du plan de support de coupe (37) de la table de coupe (25) comme un transporteur (35) tout en aspirant le plan de support de coupe (37) depuis le dessous.
  10. Procédé d'alimentation selon la revendication 8, dans lequel l'amenée et le guidage sont effectués par soufflage d'air vers la feuille de couverture de tissu (23) déroulée, depuis le dessous du trajet d'entrée du tissu.
EP95101074A 1994-01-27 1995-01-26 Appareil et méthode pour alimenter une feuille pour recouvrir un tissu dans une machine de coupe Expired - Lifetime EP0668231B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP794994 1994-01-27
JP6007949A JP2585190B2 (ja) 1994-01-27 1994-01-27 裁断機への生地被覆シート供給装置および方法
JP7949/94 1994-01-27

Publications (3)

Publication Number Publication Date
EP0668231A2 EP0668231A2 (fr) 1995-08-23
EP0668231A3 EP0668231A3 (fr) 1996-10-02
EP0668231B1 true EP0668231B1 (fr) 2000-05-24

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Application Number Title Priority Date Filing Date
EP95101074A Expired - Lifetime EP0668231B1 (fr) 1994-01-27 1995-01-26 Appareil et méthode pour alimenter une feuille pour recouvrir un tissu dans une machine de coupe

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Country Link
EP (1) EP0668231B1 (fr)
JP (1) JP2585190B2 (fr)
KR (1) KR0135200B1 (fr)
CN (1) CN1057061C (fr)
DE (1) DE69517065T2 (fr)
ES (1) ES2148354T3 (fr)

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JP2004131215A (ja) * 2002-10-09 2004-04-30 Ushio Inc 帯状ワークの搬送装置
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ITUD20030036A1 (it) * 2003-02-14 2004-08-15 G M P Spa Impianto per la produzione di manufatti in materiale plastico, relativo procedimento e manufatti cosi' ottenuti.
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Also Published As

Publication number Publication date
CN1057061C (zh) 2000-10-04
DE69517065D1 (de) 2000-06-29
KR950023490A (ko) 1995-08-18
CN1114284A (zh) 1996-01-03
EP0668231A3 (fr) 1996-10-02
JPH07214496A (ja) 1995-08-15
JP2585190B2 (ja) 1997-02-26
KR0135200B1 (ko) 1998-07-01
EP0668231A2 (fr) 1995-08-23
ES2148354T3 (es) 2000-10-16
DE69517065T2 (de) 2000-09-07

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