US3788248A - Sewing apparatus with automatic workpieces stacking means - Google Patents

Sewing apparatus with automatic workpieces stacking means Download PDF

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Publication number
US3788248A
US3788248A US00254305A US3788248DA US3788248A US 3788248 A US3788248 A US 3788248A US 00254305 A US00254305 A US 00254305A US 3788248D A US3788248D A US 3788248DA US 3788248 A US3788248 A US 3788248A
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United States
Prior art keywords
workpiece
support member
stacking
stacking apparatus
clamping
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Expired - Lifetime
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US00254305A
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English (en)
Inventor
N Marforio
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Virginio Rimoldi and Co SpA
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Virginio Rimoldi and Co SpA
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Publication of US3788248A publication Critical patent/US3788248A/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B41/00—Work-collecting devices

Definitions

  • ABSTRACT A workpiece stacking apparatus for a sewing machine for receiving workpieces after leaving the seaming area of the machine and stacking them in predetermined numbers on a movable support member in readiness for subsequent finishing operations.
  • the present invention relates to a sewing machine and more particularly to an automatic workpiece stacking apparatus for such machines.
  • Sewing machines with automatic workpiece stacking devices which automatically remove the workpiece from a discharging station at the end of the seaming operation and place it in an area adjacent to the machine.
  • the present invention provides a sewing machine with an automatic workpiece stacking apparatus for successively receiving each workpiece after it is sewn and accurately stacking the same on top of the previously sewn workpiece.
  • the same clamping member moves the workpiece from a charging station, through a seaming area and then to a discharge area or station where the workpiece is engaged by an auxiliary element which holds it in position to be acted on by the stacking apparatus.
  • the main aim of the present invention is to provide a sewing machine with an automatic workpiece stacking apparatus which eliminates the above-mentioned problems.
  • a further aim of the present invention is to provide such an apparatus having a support member in the form of a movable dolly operatively associated with the discharge area and of which the workpieces coming from the sewing station are stacked and held in readiness for moving to other machines which carry out the subsequent finishing operation.
  • a further aim of the present invention is to provide a sewing machine with an automatic workpiece stacking apparatus with the necessary safety device according to which a predetermined number of workpieces with a perfect seam only are stacked.
  • FIG. 1 is a perspective view of a sewing machine showing the apparatus according to the invention applied thereto,
  • FIG. 2 is a plan view of the sewing mechanism shown in FIG. 1,
  • FIG. 3 is a perspective view of a portion of the mechanism in FIG. 1 showing further detail of the workpiece stacking apparatus
  • FIGS. 4a and 4b show a side view of the apparatus shown in FIG. 3 drawn in successive phases of the stacking operation
  • FIG. 5 is a schematic view of the pneumatic control circuit of the apparatus according to the present invention.
  • the automatic work piece stacking apparatus could be applied to various types of sewing machines that utilize movable clamping members for moving a workpiece on the work supporting surface of the machine.
  • the drawings there has been shown a particular embodiment of the sewing machine whose electro-pneumatic controls for carrying out successive seaming cycles are arranged in circuit with and disposed so as to effect actuation of the workpiece stacking apparatus.
  • the sewing machine mechanism is essentially formed by a supporting frame 1 and a work supporting surface 2 on which the workpiece to be sewn by a fixed sewing machine 4 is caused to slide by means of a clamp 5 carried by a carriage 3 that is movable along the length of said surface 2.
  • Telescopic-like guiding elements 6 and 7 provide a means for the transverse movement of the clamp and workpiece carried thereby.
  • a pneumatic cylinder 8 when activated centrally locates the clamp 5 which is central in relation to a longitudinally extending guide element or positioning strip.
  • the contoured guiding element 9 is part of clamp 5 and reproduces the contour of the seam to be sewn. Located at the area where seaming is to begin is located a fixed element or template 10 whose contour matches that of the clamp 5.
  • the sewing machine 4 has a fixed pin 11 which loads with the contour guiding element 9 to impart to the clamp 5 a transverse component of movement while telescope-like means 6 and 7- maintain a biasing pressure in clamp 5.
  • the advance to the sewing station and then to the discharging station and the reverse run to the charging station made by the carriage 3 are performed by a motor 12 through a driving belt or chain 13.
  • the movement in one direction or the other of the carriage 3 is controlled by a coupling 14 which can be inserted into the upper or lower branch of the chain 13 by operation of pneumatic cylinder 15.
  • a door or opening 16 At the discharging station there is in the work supporting surface a door or opening 16 in which all the workpieces coming from the sewing station are discharged to be stacked in a pile.
  • a stacking device 17 is shown in all its details. It is essentially formed by two pneumatic cylinders 18 and 19, the first of which is a double acting cylinder while the second is a cylinder on that always exerts a constant, unidirectional biasing force against part of the piling mechanism, as explained more fully below.
  • a carriage 20 suitable to hold and receive sewn workpieces.
  • the carriage 20 is formed by a frame 21 having wheels 22 for easy movement.
  • a couple of vertical frame elements 23 joined above by a tubular element 24 are hinged on two brackets 25 and elastically biased by springs 26 toward the frame 21.
  • Above the frame 21 there is mounted an inverted down U-like element or support member 27 against whose vertical wall 28 the said tubular elements 24 is held by springs 26.
  • the carriage 20 is also fitted with a handle 30 and a C-like base 31 so that it can be introduced underneath the supporting frame 1 of the sewing apparatus in alignment with the door 16 on the work supporting surface 2.
  • a suitable manual control 32 for example a pedal, to open the clamp and insert the workpiece to be sewn, and then operate again the said control to close the workpiece clamp.
  • the template As placing of the workpiece in the opened clamp is effected with the help of the template 10, the template must be moved away from the work supporting surface after operation of control 3 so as to avoid any interference between it and the clamp 5 when it is closed.
  • the cycle can be started by pressing a starting knob 37 (FIG. 2) which, besides starting the motor 12 and therefore the driving chain 13 regulates the direction of movement of the carriage 3 towards the sewing machine 4. Owing to the pressure on the knob 37 the carriage 3 moves the workpiece towards the sewing machine.
  • the machine does not start working until the lower edge of the workpiece or of the clamp 5 covers a sensing element 38, in particular a photocell which, once the seaming is over, also stops the machine.
  • the photocell also has the tasks of making a thread cutter 39 work so as to free the workpiece from the needle 40 and to cause backward operation of a stacking device 17.
  • the stacking device 17 which during the whole sewing operation is in a retracted position, becomes operative once the workpiece begins to fall into opening 16. Cylinder 19 first clamps the workpiece against vertical wall 28 of element 27. Subsequently cylinder 18 moves the remainder of the workpiece over the top of element 27 where the workpiece is then stacked.
  • the pressures in the cylinders 18 and 19 are identical but the cross-sectional area of the stacking cylinder 18 is much larger than that of the cylinder 19 so that there is such difference in power that, although the piston 42 is always biased in one direction it can be forcibly moved to its retracted position by piston 18 acting through the arms 44 when they contact rod 46 during return movement of piston 18.
  • the stacking device is in the position represented in the FIG. 4a with the piston 41 completely withdrawn.
  • the carriage 3 and the clamp 5 continue to move forward until they free the tracking edge of the workpiece which is not held on the work supporting surface any more.
  • the opening door 16 As the opening door 16 is located near the sewing machine 4, the workpiece has already begun to go down through this opening while its back edge is still being sewn by the machine. As soon as the latter stops working owing to the time-regulated pulse of the sensitive photocell element 38 the piston 41 also starts moving forward at the same time as the clamp 5 and this moving brings the transverse rod or bar 43 against a trailing portion of the workpiece-This trailing portion is carried over the top of element 27 and is then released because the wide arms 44 are in contact with the tubular element or rod 24 to move it away from element 27.
  • the piston 42 can move forward following for a certain distance the movement of the wide arms 44 to hold the longest edge of the workpiece 47 against the frame 21.
  • the position is the one shown in the FIG. 4b, in which there is shown the workpiece 47 with its longer edge held by a holding rod 46 and the shorter edge laid over the element 27.
  • the working cycle of the stacking device 17 is controlled by a pneumatic circuit (FIG. 5) which includes a couple of control elements, in particular two electrovalves 48 and 49 energized by the sensor element 38 (FIGS. 1 and 2) which senses the position of the workpiece 47 on the work supporting surface 2 of the sewing machine.
  • a pneumatic circuit FIG. 5 which includes a couple of control elements, in particular two electrovalves 48 and 49 energized by the sensor element 38 (FIGS. 1 and 2) which senses the position of the workpiece 47 on the work supporting surface 2 of the sewing machine.
  • the sensitive element 38 When the sensitive element 38 assumes its so-called rest condition, it causes the energizing of both electro valves 48 and 49.
  • the first of the two when energized opens the valve with which it is fitted thus allowing the passage of a flow of compressed air from a normal feeding line 50 towards a distributing valve 51 normally open through a duct 52 and from the latter to the other I electro-valve 49 which is in the same condition of the first being actuated through another duct 53.
  • the distributing valve 51 (normally open) is closed effecting interruption of the flow of compressed air from the line 50 to the oneway distributing valve 57 through the first electro-valve 48, the duct 52, the distributing valve 51, the duct 53, the second electro-valve 49 and the duct 56.
  • This interruption of air flow returns the one-way distributing valve to its original statement causing the return of the piston 41 to its retracted position.
  • a pulse is first sent to a counter, actually a relay suitable for this purpose, while another counter is adjusted for a predetermined number of workpieces which is desired to stack on each dolly.
  • the pulse received at the end of each seaming cycle corresponds to a figure in the first counter, when the number reached in the latter is equal to the predetermined number of the second counter, then a safety device will actuate to prevent a successive cycle from being carried out.
  • pneumatic cylinders for actuating the various elements of the invention could be replaced by different types of actuating devices such as, for example, electromechanical elements.
  • a sewing machine of the type including a supporting frame having a work supporting surface forming the upper portion thereof and a carriage attached to and movable along the latter with a clamping member connected to the carriage for moving a workpiece along the supporting surface from a charging station through a seaming area to a discharge area, a workpiece stacking apparatus comprising;
  • a support member disposed below and in communication with the supporting surface for receiving a workpiece from tthe discharge area
  • stacking means operatively connected to said holding means for moving and draping an end of the workpiece over said support member, and;
  • a clamping member operatively associated with said support member and movable between positions for permitting stacking of workpieces on said support member and clamping the same thereto.
  • said holding means includes a pneumatically-controlled holding rod disposed transversely of the direction of movement of the workpiece.
  • said stacking means includes a pneumatically-controlled bar member disposed transversely of the direction of travel of the workpiece and rod elements operatively associated with each end of said bar member for guiding the latter in a horizontal path between an inactive position and the position at which it places the workpiece on said support member.
  • said pneumatically controlled bar member includes a depending arm on each end thereof 5 slidable on said rod elements during movement of said bar member to effect the opening and closing of said contact with workpieces deposited on said support member.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Discharge By Other Means (AREA)
US00254305A 1971-06-18 1972-05-17 Sewing apparatus with automatic workpieces stacking means Expired - Lifetime US3788248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2601271 1971-06-18

Publications (1)

Publication Number Publication Date
US3788248A true US3788248A (en) 1974-01-29

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ID=11218406

Family Applications (1)

Application Number Title Priority Date Filing Date
US00254305A Expired - Lifetime US3788248A (en) 1971-06-18 1972-05-17 Sewing apparatus with automatic workpieces stacking means

Country Status (6)

Country Link
US (1) US3788248A (fr)
JP (1) JPS5651794B1 (fr)
DE (1) DE2229002B2 (fr)
ES (1) ES403976A1 (fr)
FR (1) FR2142429A5 (fr)
GB (1) GB1353450A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326525A1 (fr) * 1975-10-02 1977-04-29 Rockwell Rimoldi Spa Dispositif d'empilage pour pieces vestimentaires dans une unite de couture
US4144825A (en) * 1976-10-29 1979-03-20 Pfaff Industriemaschinen Gmbh Workpiece stacking device for sewing machines
US4343255A (en) * 1979-05-01 1982-08-10 Starkville Tool And Die Company Automated placket shirt machine
EP0129043A2 (fr) * 1983-06-16 1984-12-27 Anton Cramer GmbH & Co. KG Dispositif et procédé pour piquer des motifs sur par exemple, des oreillers
FR2559794A1 (fr) * 1984-02-22 1985-08-23 Normande Confection Dispositif pour l'evacuation rapide de pieces de vetement a la sortie d'une machine
DE3537743A1 (de) * 1985-02-08 1986-08-14 Necchi S.p.A., Pavia Stoffstapelvorrichtung fuer naehmaschinen
US4624615A (en) * 1984-03-26 1986-11-25 The Biltwell Company, Inc. Stacker for pants and other sewn garments
US4778438A (en) * 1985-04-29 1988-10-18 Eminence S.A. Fabric stacking device
US5063864A (en) * 1989-09-14 1991-11-12 Juki Corporation Workpiece stacker in sewing machine
US5109781A (en) * 1989-12-28 1992-05-05 Juki Corporation Stacking apparatus for sewing machine
US5816178A (en) * 1995-09-20 1998-10-06 Jet Sew Technologies, Inc. Automatic unloading and stacking apparatus
CN103588002A (zh) * 2013-11-06 2014-02-19 广东溢达纺织有限公司 自动收领条的装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219001A (en) * 1962-03-05 1965-11-23 Warren R Spivey Sewing means in combination with cloth stacking and turning means
US3276776A (en) * 1964-08-20 1966-10-04 Silverman Jacob Workpiece stacking apparatus
US3371631A (en) * 1966-04-28 1968-03-05 Union Special Machine Co Work-stacking mechanism
US3399640A (en) * 1966-01-25 1968-09-03 Carney J. Bryan Automatic sewing machine system
US3500780A (en) * 1968-09-30 1970-03-17 Southern Machinery Co Stacker for flexible sheet material
US3670674A (en) * 1970-04-30 1972-06-20 Kellwood Co Automatic feeder for workpieces of fabric or the like

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS506819A (fr) * 1973-06-01 1975-01-24

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219001A (en) * 1962-03-05 1965-11-23 Warren R Spivey Sewing means in combination with cloth stacking and turning means
US3276776A (en) * 1964-08-20 1966-10-04 Silverman Jacob Workpiece stacking apparatus
US3399640A (en) * 1966-01-25 1968-09-03 Carney J. Bryan Automatic sewing machine system
US3371631A (en) * 1966-04-28 1968-03-05 Union Special Machine Co Work-stacking mechanism
US3500780A (en) * 1968-09-30 1970-03-17 Southern Machinery Co Stacker for flexible sheet material
US3670674A (en) * 1970-04-30 1972-06-20 Kellwood Co Automatic feeder for workpieces of fabric or the like

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326525A1 (fr) * 1975-10-02 1977-04-29 Rockwell Rimoldi Spa Dispositif d'empilage pour pieces vestimentaires dans une unite de couture
US4067272A (en) * 1975-10-02 1978-01-10 Rockwell-Rimoldi S.P.A. Device for stacking articles of clothing in a sewing unit
US4144825A (en) * 1976-10-29 1979-03-20 Pfaff Industriemaschinen Gmbh Workpiece stacking device for sewing machines
US4343255A (en) * 1979-05-01 1982-08-10 Starkville Tool And Die Company Automated placket shirt machine
EP0129043A2 (fr) * 1983-06-16 1984-12-27 Anton Cramer GmbH & Co. KG Dispositif et procédé pour piquer des motifs sur par exemple, des oreillers
EP0129043A3 (en) * 1983-06-16 1985-05-15 Anton Cramer Gmbh & Co. Kg Device and process for quilting
FR2559794A1 (fr) * 1984-02-22 1985-08-23 Normande Confection Dispositif pour l'evacuation rapide de pieces de vetement a la sortie d'une machine
US4624615A (en) * 1984-03-26 1986-11-25 The Biltwell Company, Inc. Stacker for pants and other sewn garments
US4608938A (en) * 1985-02-08 1986-09-02 Necchi Societa Per Azioni Fabric piece stacker applied to a sewing machine
DE3537743A1 (de) * 1985-02-08 1986-08-14 Necchi S.p.A., Pavia Stoffstapelvorrichtung fuer naehmaschinen
US4778438A (en) * 1985-04-29 1988-10-18 Eminence S.A. Fabric stacking device
US5063864A (en) * 1989-09-14 1991-11-12 Juki Corporation Workpiece stacker in sewing machine
US5109781A (en) * 1989-12-28 1992-05-05 Juki Corporation Stacking apparatus for sewing machine
US5816178A (en) * 1995-09-20 1998-10-06 Jet Sew Technologies, Inc. Automatic unloading and stacking apparatus
CN103588002A (zh) * 2013-11-06 2014-02-19 广东溢达纺织有限公司 自动收领条的装置及方法
CN103588002B (zh) * 2013-11-06 2016-06-22 广东溢达纺织有限公司 自动收领条的装置及方法

Also Published As

Publication number Publication date
DE2229002A1 (de) 1972-12-28
DE2229002B2 (de) 1978-06-22
FR2142429A5 (fr) 1973-01-26
JPS5651794B1 (fr) 1981-12-08
GB1353450A (en) 1974-05-15
ES403976A1 (es) 1975-05-16

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