EP0508211B1 - Vorrichtung zum Halten und Führen von Material an Stickmaschinen - Google Patents

Vorrichtung zum Halten und Führen von Material an Stickmaschinen Download PDF

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Publication number
EP0508211B1
EP0508211B1 EP92105084A EP92105084A EP0508211B1 EP 0508211 B1 EP0508211 B1 EP 0508211B1 EP 92105084 A EP92105084 A EP 92105084A EP 92105084 A EP92105084 A EP 92105084A EP 0508211 B1 EP0508211 B1 EP 0508211B1
Authority
EP
European Patent Office
Prior art keywords
frame
tensioning
hose
internal frame
internal
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
EP92105084A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0508211A1 (de
Inventor
Peter Berg
Eberhard Karste
Karl-Peter Mölder
Wolfgang Reuner
Horst Ribbecke
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.)
ZSK Stickmaschinen GmbH
Original Assignee
ZSK Stickmaschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE9104446U external-priority patent/DE9104446U1/de
Priority claimed from DE9108526U external-priority patent/DE9108526U1/de
Application filed by ZSK Stickmaschinen GmbH filed Critical ZSK Stickmaschinen GmbH
Publication of EP0508211A1 publication Critical patent/EP0508211A1/de
Application granted granted Critical
Publication of EP0508211B1 publication Critical patent/EP0508211B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
    • D05C9/02—Appliances for holding or feeding the base fabric in embroidering machines in machines with vertical needles
    • D05C9/04—Work holders, e.g. frames
    • D05C9/06—Feeding arrangements therefor, e.g. influenced by patterns, operated by pantographs
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
    • D05C9/02—Appliances for holding or feeding the base fabric in embroidering machines in machines with vertical needles
    • D05C9/04—Work holders, e.g. frames

Definitions

  • the invention relates to a device for holding and guiding material on embroidery machines, with a pantograph-guided tensioning frame which consists of an outer frame, an inner frame and a tensioning hose which can be clamped between the outer frame and the inner frame, the tensioning hose being connectable to a pressure medium source.
  • the part of the material to be embroidered is clamped on or in the stenter and moved with the stenter.
  • a device (PCT-WO 89/10443) is known in which an inflatable tube is used to tension the material web in the tensioning frame. Thanks to the special carcass design and the incorporation of reinforcements, the tube is designed so that it expands in its circumference when exposed to air and thereby moves the part of the material web to be embroidered (on which it rests) outwards. Due to its storage, the hose turns outwards and thereby increases the tension of the material web.
  • an inflatable corrugated hose is known (DE-PS 37 33 886), which is fastened in a specially designed profile, which is applied from above to a correspondingly complicated profile in order to tension the material web.
  • the object of the invention is to clamp the part of a material web or material blanks to be embroidered smooth on all sides, to make the material tension adjustable and thus reproducible. This should be possible in the embroidery machine and also outside of the embroidery machine, and thus in a separate workplace.
  • the outer frame on its inner circumference and / or the inner frame on its outer circumference has a groove for receiving the tensioning hose, that the tensioning hose has a shut-off device or a pressure accumulator and a detachable connection to the pressure medium source and that the connection of the tensioning frame to Pantograph guide is detachable.
  • the stenter is an independent unit that can be detached from the embroidery machine and loaded with the material to be embroidered outside the embroidery machine. Because of the shut-off device, the tensioning hose does not have to be constantly connected to the pressure medium supply, in particular a compressed air supply.
  • the shut-off device preferably has a check valve.
  • the detachable connection to the pressure medium source can be a plug-in coupling.
  • the tension tube can also consist of several sections, each having a shut-off device and a detachable connection to the pressure medium source, so that these individually fillable tension hose sections can also be used for differentiated span adjustment of the section of the material to be embroidered.
  • the grooves on the outer frame and on the inner frame should have cross sections that support a symmetrical balance and self-centering of the frames. This is possible with an embodiment in which the cross sections of the grooves are symmetrical with respect to a central plane of the frame.
  • a self-centering of the frame and at the same time an increase in the clamping forces is achieved if the inner frame has a hold-down plate acting on the upper side of the outer frame or the profile upper side of the inner frame is pulled outwards so far that it covers the upper side of the outer frame and the cross sections the grooves on the outer frame and / or inner frame are asymmetrical with respect to a central plane of the frame.
  • the asymmetry creates an additional force component, by means of which the outer frame is pressed against the hold-down plate serving as an abutment or the upper side of the inner frame which is pulled outwards and is centered in the process.
  • Another advantage of the asymmetry generated by pressing the outer frame against the top of the inner frame or against the hold-down plate attached to the top of the inner frame is that the material to be tensioned is clamped between the inner and outer frames or between the outer frame and hold-down plate and so that later tensioning by pressurizing the tensioning hose cannot be pulled from above into the groove of the outer frame, but that the tensioning hose expanding into the groove of the outer frame can only pull material from the lower material area to be tensioned.
  • a changing device is arranged above the clamping frame, which has vertically movable gripping elements which can be coupled to the inner frame.
  • This changing device serves to insert the inner frame into the outer frame with the interposition of the part of the material web to be embroidered or to detach the inner frame from the outer frame. This enables automatic operation of the embroidery machine.
  • the gripping elements can be designed as pivotable hooks, which in the associated recesses of Intervene in the inner frame.
  • the gripping elements can be pivoted against spring force with solenoids.
  • the changing device can have positioning pins and recesses assigned to the inner frame.
  • FIG. 1 shows an embroidery machine 1 with a work surface 2, over which the material 3 to be embroidered is guided.
  • the material is clamped in the clamping frame 4, which is moved by means of a pantograph guide 17.
  • the clamping frame 4 consisting of the inner frame 5 and outer frame 10, with the material 3 and the pressure supply line 16.
  • the inner diameter of the outer frame 10 is larger than the outer diameter of the inner frame 5, so that there is a clearance 19 between the two.
  • This game 19 is filled by a tension hose 15.
  • the tensioning hose 15 has a round or oval cross section and is thin-walled and elastic. It is fastened in a groove 6 on the circumference of the inner frame 5.
  • the inner circumference of the outer frame 10 also has a groove 11 which is triangular.
  • the tensioning hose 15 can also be attached to the outer frame 10.
  • the tensioning hose 15 is connected via the pressure feed line 16 to an overpressure / underpressure source. As a result, the tensioning hose 15 is pressurized or vented with compressed air.
  • the inner frame 5 is lowered into the outer frame 10 located under the material 3. By lowering the smoothly placed on the outer frame 10 material 3 over the upper inner edge 14 of the outer frame 10 and the lower outer edge 8 of the inner frame 5 is biased, in all directions.
  • the compressed hose 15, which is contracted by the applied vacuum, is then pressurized with compressed air. It presses into the groove 11 of the outer frame 10 and thus clamps the material 3 in the stenter 4 fixed.
  • the tensioning hose 15 is subjected to a vacuum.
  • the tensioning hose 15 collapses, the groove 11 in the outer frame 10 is released and the inner frame 5 can be lifted out of the outer frame 10 so that the material 3 is exposed for removal.
  • the outer frame 10 is pressed upwards when the tensioning hose 15 is filled with compressed air and clamps the material 3 with its top 13 against the bottom 7 of the profile of the inner frame 5 covering the outer frame 10. If the tensioning tube 15 expands further into the groove 11 of the outer frame 10 when the pressure increases, the material 3 required as a result of the tube stretching is drawn from below, and thus the desired tension of the material to be embroidered increases in the tensioning frame 4. It goes without saying that that the embroidered material is removed from the stenter as described above.
  • the inner frame 5 has a hold-down plate 9 which acts on the upper side 13 of the outer frame 10 and the cross sections of the groove 11 on the outer frame 10 are asymmetrical with respect to a central plane of the frame 4.
  • internals 12 are provided in the upper corner of the groove, which consist of a profile with a triangular cross section.
  • the internals 12 can also be made in one piece with the groove-forming profile be trained. Due to the asymmetrical cross section of the groove 11, an additional vertical force component is generated when the tensioning hose 15 is inflated, which presses the upper side 13 of the outer frame 10 against the hold-down plate 9 serving as an abutment.
  • the hold-down plate 9 is designed so that it completely covers the top 13 of the outer frame 10 and encloses the top 13 with an angle 18.
  • pressure is applied to the tensioning hose 15, it expands into the grooves 11 of the outer frame 10 or 6 of the inner frame 5 and, in addition to the desired tensioning of the material 3, causes the inner frame 5 or the outer frame 10 to deform under increased pressure and the play 19 becomes too large.
  • Such a deformation is effectively prevented by enclosing the outer frame 10 with the bend 18 of the hold-down plate 9.
  • the application of this solution is especially for large frames, e.g. B. border frame, advantageous.
  • the tensioning hose 15 has a shut-off element, which also includes a check valve, and a detachable connection, in particular a plug-in coupling for the compressed air source, not shown.
  • a shut-off element which also includes a check valve, and a detachable connection, in particular a plug-in coupling for the compressed air source, not shown.
  • This arrangement makes it possible to remove the tensioning frame 4 as an independent component from the embroidery machine and to clamp the material to be embroidered elsewhere therein.
  • the tensioning hose 15 can consist of several sections, each of which has a shut-off element and a detachable connection to the compressed air source. This Execution is particularly with very large stenter frames, e.g. B. border frame, advantageous.
  • the embroidery head 103 of the embroidery machine is arranged over a work surface 101 (see FIG. 6) over which the web-shaped material 102 to be embroidered is guided.
  • the outer frame 104 can be moved between the work surface 101 and the material 102 by means of a pantograph drive 105.
  • the changing device 106 is fastened at a distance above the work surface 101 and the material 102. It is located above the area of the work surface 101 over which the material 102 is clamped in the clamping frame 107. This area can be freely selected on the work surface 101 as a function of the size and shape of the tensioning frame 107, the material 102, the pattern, the embroidery machine, etc.
  • the changing device 106 consists of a movable gripping device 108, a fixed base frame 109 and a drive 110 , for example a working cylinder or an engine.
  • the gripping device 108 is provided at the top with guide elements 111 which are guided vertically in the base frame 109.
  • At the bottom of the gripping device 108 there are at least three hook-shaped gripping elements 112, which are held in the position shown against a compression spring 119 (see FIG. 7) and can be swung outwards by the rod 120 of a lifting magnet 121.
  • a downward-pointing position pin 113 In the vicinity of each gripping element 112 there is a downward-pointing position pin 113.
  • the inner frame 114 of the tensioning frame 107 can be received by means of this gripping element 112.
  • the shape and size of the inner frame 114 and outer frame 104 are matched to one another. They are either round or quadrangular to polygonal.
  • the inner diameter of the outer frame 104 is larger than the outer diameter of the inner frame 114, so that there is play between the two.
  • This game is filled by a tension hose 115.
  • the tensioning hose 115 has a round or oval cross section and is thin-walled and elastic. It is fastened in a groove 116 on the circumference of the inner frame 114.
  • the inner circumference of the outer frame 104 also has a groove 117 which is round or triangular.
  • the tensioning hose 115 is connected to an overpressure / underpressure source via a pressure feed line. As a result, the tensioning hose 115 is pressurized or vented with compressed air.
  • the inner frame 114 has cutouts 122 for the gripping elements 112 and cutouts 123 for the positioning pins 113 as well as holding brackets 124, behind which the gripping elements 112 grip.
  • a clamping device 128 is arranged between a winding roller 125 or an unwinding roller 126 and a deflection roller 127 in front of and behind the work surface 101.
  • the clamping devices 128 consist of a roller 130 which can move freely on a pivotably attached lever arm 129 and a pressure trough 132 which is also fastened on a lever arm 131.
  • the lever arm 129 is pivotably articulated.
  • the roller 130 is pulled down by means of a spring 133 and tensions the web-shaped material 102 on the unwinding and on the winding side with the same tension.
  • a working cylinder 134 is fastened, which either fixes the pressure trough 132 at a distance below the roller 130 or presses the pressure trough 132 against the force of the spring 133 against the roller 130 during its lifting movement and thus clamps the material 102.
  • the roller With further upward movement of the piston rod of the working cylinder 134, the roller is also pivoted upwards; when the force of the spring 133 is overcome, the contact pressure between the roller 130 and the pressure trough 132 increases and at the same time a material loop 136 is formed between the respective clamping point on both rollers 130 and the deflection rollers 127, on which the web-shaped material 102 lies loosely. In this state, the material 102 is relaxed on the work surface 101 and is free for the movement of the clamping frame 107.
  • the web-shaped material 102 is clamped in the tensioning frame 107.
  • the inner frame 114 hangs on the gripping elements 112 of the changing device 106 above the material 102.
  • the outer frame 104 is located under the changing device 106 in the receiving position. Both pressure troughs 132 and both rollers 130 are in their lower end position, that is to say the web-shaped material 102 is stretched over the work surface 101, but is not clamped between the rollers 130 and the pressure troughs 132.
  • the drive 110 is activated and the changing device 106 is lowered with the inner frame 114 attached to it into the outer frame 104 located under the material 102.
  • the web-shaped material 102 which is already stretched on the work surface 101 by means of the lowered rollers 130, is then re-tensioned over the inner edge of the outer frame 104 and the outer edge of the inner frame 114, in all directions.
  • the compressed hose 115 which is contracted by the applied vacuum, is then acted upon by compressed air. It presses itself into the groove 117, which has a rough surface, and thus clamps the web-shaped material 102 in the clamping frame 107.
  • the changing device 106 is then moved down a few millimeters further and the gripping elements 112 are pivoted outward so that they release the holding brackets 124. Now the changing device 106 moves up again. Then both pressing troughs 132 are also moved upwards against the rollers 130, and the web-shaped material 102 is thus clamped on both sides.
  • the sheet-like material 102 relaxes on the work surface 101, and the tensioning frame 107 is freely movable on the work surface 101 with the clamped point to be embroidered with the aid of the pantograph drive 105.
  • the clamping frame 107 is now moved under the embroidery head 103 in accordance with the program entered for the purpose of embroidery.
  • the material loop that forms between each clamping device 128 and the associated deflection roller 127 must correspond to the maximum travel of the tensioning frame 107.
  • the tensioning frame 107 moves back into its starting position under the changing device 106.
  • the clamping devices 128 move again into their lower end positions and tension the web-like material 102 over the work surface 101, and the pressure troughs 132 release the rollers 130.
  • the changing device 106 also lowers, so that the gripping elements 112 can move into the cutouts 122 and the positioning pins 113 into the cutouts 123.
  • the gripping elements 112 latch into the holding bracket 124.
  • the tensioning hose 115 is subjected to a vacuum, so that it collapses and releases the groove 117.
  • the changing device 106 is then moved upwards with the inner frame 114 hanging on it and the take-up roll 125 transports the web-shaped material 102 until the next place to be embroidered is in the receiving area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Automatic Embroidering For Embroidered Or Tufted Products (AREA)
EP92105084A 1991-04-12 1992-03-25 Vorrichtung zum Halten und Führen von Material an Stickmaschinen Expired - Lifetime EP0508211B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9104446U 1991-04-12
DE9104446U DE9104446U1 (tr) 1991-04-12 1991-04-12
DE9108526U DE9108526U1 (tr) 1991-07-11 1991-07-11
DE9108526U 1991-07-11

Publications (2)

Publication Number Publication Date
EP0508211A1 EP0508211A1 (de) 1992-10-14
EP0508211B1 true EP0508211B1 (de) 1995-07-26

Family

ID=25958065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105084A Expired - Lifetime EP0508211B1 (de) 1991-04-12 1992-03-25 Vorrichtung zum Halten und Führen von Material an Stickmaschinen

Country Status (6)

Country Link
EP (1) EP0508211B1 (tr)
JP (1) JPH076128B2 (tr)
AT (1) ATE125584T1 (tr)
DE (1) DE59203005D1 (tr)
GR (1) GR3017531T3 (tr)
TR (1) TR25895A (tr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2230934B1 (es) * 2002-03-11 2006-07-01 Sefar Maissa, S.A. Dispositivo de sujecion de tejidos para su tensado.
SE523464C2 (sv) 2002-12-18 2004-04-20 Vsm Group Ab Anordning vid en broderbåge och metod att klämma fast och sträcka ett textilmaterial
CN101805967A (zh) * 2009-11-11 2010-08-18 天津宝盈电脑机械有限公司 电脑绗缝绣花机的单层布平布装置
CN110453397A (zh) * 2019-07-31 2019-11-15 周琦 膨胀夹布装置
CN113502615B (zh) * 2021-05-28 2022-07-22 浙江信胜科技股份有限公司 一种打环头分离片转移机械手锁绳装置及绣花机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE515955A (tr) *
DE1083218B (de) * 1957-05-23 1960-06-15 Artos Maschb Dr Ing Meier Wind Vorrichtung zum Aufspannen von Metall- oder anderen Geweben auf starre Rahmen, insbesondere Filmdruckschablonenrahmen
DE2053931C3 (de) * 1970-11-03 1981-11-05 Gottfried 8501 Burgthann Spiewok Selbstspannender Siebdruckrahmen
DE2733468A1 (de) * 1977-07-25 1979-02-15 Basf Ag Kationische farbstoffe
JPS61275453A (ja) * 1985-04-10 1986-12-05 ハッピ−工業株式会社 ミシン刺繍用枠
DE3733886C1 (en) * 1987-10-07 1989-02-02 Pfaff Ind Masch Clamping device for the embroidery material on embroidering machines
DE3843000A1 (de) * 1988-04-19 1989-11-02 Continental Ag Vorrichtung zur bereichsweisen festspannung eines biegeschlaffen, flaechigen materials
DE3820974C3 (de) * 1988-06-22 1996-03-21 Kuesters Eduard Maschf Dichtungsglied bzw. Walze

Also Published As

Publication number Publication date
ATE125584T1 (de) 1995-08-15
DE59203005D1 (de) 1995-08-31
TR25895A (tr) 1993-11-01
JPH05247827A (ja) 1993-09-24
GR3017531T3 (en) 1995-12-31
JPH076128B2 (ja) 1995-01-30
EP0508211A1 (de) 1992-10-14

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