EP1760178A1 - Nähmaschine - Google Patents

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Publication number
EP1760178A1
EP1760178A1 EP05748797A EP05748797A EP1760178A1 EP 1760178 A1 EP1760178 A1 EP 1760178A1 EP 05748797 A EP05748797 A EP 05748797A EP 05748797 A EP05748797 A EP 05748797A EP 1760178 A1 EP1760178 A1 EP 1760178A1
Authority
EP
European Patent Office
Prior art keywords
fabric
working
frame
fixed
clamp
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.)
Withdrawn
Application number
EP05748797A
Other languages
English (en)
French (fr)
Other versions
EP1760178A4 (de
Inventor
Tetsurou TOKAI KOGYO MISHIN K.K. KONDOU
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.)
Tokai Kogyo Sewing Machine Co Ltd
Original Assignee
Tokai Kogyo Sewing Machine Co Ltd
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
Application filed by Tokai Kogyo Sewing Machine Co Ltd filed Critical Tokai Kogyo Sewing Machine Co Ltd
Publication of EP1760178A1 publication Critical patent/EP1760178A1/de
Publication of EP1760178A4 publication Critical patent/EP1760178A4/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B11/00—Machines for sewing quilts or mattresses
    • 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 present invention relates generally to sewing machines for successively performing sewing on an elongated working fabric by repeating a sewing operation, such as an embroidery operation, while changing a to-be-fixed position of the working fabric relative to a fabric frame placed on a machine table. More particularly, the present invention relates to a sewing machine improved so as to reinforce fixation of a working fabric relative to a fabric frame.
  • FIG. 15 is a plan view of an example of such a type of sewing machine, where reference numeral 1 indicates a machine frame, 2 a machine table, 3 a plurality of machine heads, 5 a fabric frame.
  • the fabric frame 5 is provided with horizontal clamp members 101a and 101b and vertical clamp members 102a and 102b for clamping a working fabric N.
  • the horizontal clamp members 101a and 101b are members of an identical construction merely positioned in opposed relation to each other, and thus, only one of the horizontal clamp members 101a will be representatively explained below.
  • Fig. 16 is a sectional side view, taken along the III - III line in Fig. 15, of the front horizontal clamp member 101a.
  • the horizontal clamp member 101a includes a fixing sash 104 having the same length as a horizontal side of the fabric frame 5, and the fixing sash 104 is fixed, at portions near its opposite ends, to the fabric frame 5 via brackets 103.
  • a plurality of (six in the illustrated example) actuators 105 are provided on the fixing sash 104 at appropriate intervals, and a rod portion of each of the actuators 105 is fixed, at its distal end, to a respective predetermined portion of an elongated holding member 106 extending along the length of the horizontal clamp member 101a so that the rod portions of the actuators 105 cooperatively suspend thereon the holding member 106.
  • the distal end of the rod portion of each of the actuators 105 is fixed to a predetermined portion of the single elongated holding member 106, and these (i.e., six) actuators 105 cooperate to cause the single holding member 106 to move in an up-down direction of the sewing machine.
  • Fig. 17 is a sectional side view, taken along the IV - IV line in Fig. 15, of the right vertical clamp member 102a.
  • the vertical clamp member 102a includes a vertical sash 109, and the vertical sash 109 has a length slightly smaller than a distance between the horizontal clamp members 101a and 101b.
  • First actuators 111 are fixed, via brackets 110, to opposite end portions of the vertical sash 109.
  • Pivot levers 112 are pivotally supported on the brackets 110, and each of the pivot levers 112 is connected, via a pin 114, to a rod portion of the corresponding first actuator 111.
  • Holding sash 113 having substantially the same length as the vertical sash 109 is disposed over the vertical sash 109, and the holding sash 113 is fixed, at its opposite end portions, to respective distal end portions of the two pivot levers 112.
  • Cushion member 115 is fixed to the holding sash 113 along the entire length of the latter, and a felt piece 116 is attached to the holding sash 113 along the entire length of the latter.
  • the working fabric N can be held between the cushion member 115 and the felt piece 116 by the holding sash 113 being caused to pivot downward through activation of the first actuator 111.
  • Second actuators 117 are provided near the opposite ends of the vertical clamp member 102a, and the second actuators are mounted to the horizontal clamp members 101a and 101b, respectively. Rod portions of the two second actuators 117 are connected to the vertical sash 109 near the opposite ends of the sash 109, and the vertical sash 109 can be moved in the left-right direction through activation of the second actuators 117.
  • the fabric N When the working fabric N is to be set on the sewing machine, the fabric N is paid out from a supply stand and passed over the fabric frame 5 in such a manner that it can be clamped by the individual clamp members, and then the fabric N is directed to a take-up stand. After that, the actuators of the horizontal clamp members 101a and 101b and vertical clamp members 102a and 102b are activated to fix the working fabric N to the fabric frame 5.
  • the actuators 105 of the horizontal clamp members 101a and 101b are activated to cause the working fabric N to be held between the holding members 106 and the abutting engagement sections 107, then the first actuators 111 of the vertical clamp members 102a and 102b are activated to cause the working fabric N to be held between the cushion members 115 and felt pieces 116, and then the second actuators 117 are activated to increase an interval or distance between the vertical clamp members 102a and 102b so that the fabric N is stretched taut enough. In this way, the working fabric N can be appropriately fixed to the fabric frame 5.
  • the fixation of the working fabric N to the frame 5 is executed by the holding members 106 and holding sashes 113 being lowered to hold or sandwich the fabric N in conjunction with the abutting engagement section 107 and the vertical sash 109.
  • the working fabric N is fixed by being pressed from above by the holding members 106 and holding sashes 113.
  • a force pulling the working fabric N in a lateral (or planar) direction of the working fabric N would act on the fabric N due to, for example, contraction of the fabric N resulting from movement of the fabric frame 5 and progression of the sewing operation.
  • the fixing sashes 104 of the horizontal clamp members 101a and 101b each have a relatively great length in correspondence with the width of the working fabric N.
  • the fixing sashes 104 are each merely fixed, at portions near its opposite ends, to the fabric frame 5, via the brackets 103, to extend along the fabric frame; this is for the purpose of passing the fabric N between the fixing sashes 104 and the fabric frame 5.
  • the fixing sashes 104 can not be fixed at their intermediate portions. Consequently, when the holding members 106 have been lowered to sandwich the fabric N, intermediate portions of the fixing sashes 104 tend to deform (bend upwardly) so that the fabric N can not be reliably pressed by the fixing sashes 104. The deformation of the fixing sashes 104 too would become a negative factor preventing strong fixation of the working fabric N.
  • an object of the present invention to provide an improved fabric fixing mechanism which, in a sewing machine arranged to successively perform sewing on an elongated working fabric by repeating a sewing operation, such as an embroidery operation, while changing a to-be-fixed position of the working fabric relative to a fabric frame on a machine table, can significantly reinforce the fixation of the working fabric relative to the fabric frame.
  • a sewing machine of a type in which an elongated working fabric is supplied from a fabric supply source to a fabric frame, controllably driven on a machine table, to be fixed to the fabric frame via a clamp mechanism, and then, upon completion of sewing on a portion of the fabric fixed to the fabric frame, fixation, via the clamp mechanism, of the fabric is canceled to allow the fabric to move relative to the fabric frame so that another portion of the working fabric is fixed to the fabric frame for sewing on the other portion.
  • a sewing machine of a type in which an elongated working fabric is supplied from a fabric supply source to a fabric frame, controllably driven on a machine table, to be fixed to the fabric frame via a clamp mechanism, and then, upon completion of sewing on a portion of the fabric fixed to the fabric frame, fixation, via the clamp mechanism, of the fabric is canceled to allow the fabric to move relative to the fabric frame so that another portion of the working fabric is fixed to the fabric frame for sewing on the other portion.
  • the clamp mechanism includes an elongated horizontal clamp member extending generally transverse to a feeding direction of the working fabric, and a sash portion connected and extending between opposite ends of the fabric frame and suspending thereon the horizontal clamp member, the clamp mechanism clamping the working fabric by moving the horizontal clamp member toward the fabric frame with the working fabric positioned between the horizontal clamp member and the fabric frame.
  • the retaining member of the clamp mechanism is set in the claming position by pivoting about the pivot shaft extending along the planar direction of the working fabric positioned on the fabric frame, and thus, moment of the retaining member acts substantially laterally (in the planar direction of the working fabric) at the time of working fabric clamping.
  • the clamp mechanism in the present invention can fix the working fabric more firmly with respect to the lateral direction (planar direction) in which the working fabric is pulled.
  • the retaining member operates to fix the working fabric even more firmly without moving with the pulled fabric, so that the working fabric can be fixed with an increased reliability, As a result, even where the working fabric is a thin fabric, it can be fixed reliably to the fabric frame.
  • the positioning mechanism is provided at an intermediate position of the sash portion suspending thereon the horizontal clamp member.
  • the vertically-movable member of the positioning mechanism is caused ascend to permit feeding of the working fabric, while, when the working fabric is to be fixed, the vertically-movable member is caused to descend to fix the working fabric between the vertically-movable member and the fabric frame and also support the intermediate position of the sash portion so as not to hang down or deform due to a reactive force from the fixed working fabric.
  • the sash portion can be constantly positioned at an appropriate height, so that the working fabric can be fixed reliably over an almost entire length of the elongated sash portion. Further, it is possible to prevent vibration of the sash portion during movement of the fabric frame, which allows the fabric to be fixed with an even further increased reliability.
  • Fig. 1 is a plan view of a multi-head embroidery sewing machine in accordance with an embodiment of the present invention, in which reference numeral 1 indicates a machine frame and 2 a machine table.
  • a plurality of (twelve in the illustrated example) machine heads 3 are arranged on the machine frame 1 at equal intervals in a left-right (horizontal) direction as viewed from the front of the machine.
  • Needle plates 4 are provided on the table 2 in positional corresponding relation to the machine heads 3.
  • Fabric frame 5 is placed on the table 2 and drivable two-dimensionally, i.e. in front-rear and left-right directions, by means of an X drive mechanism and Y drive mechanism 7 disposed under the table 2.
  • Horizontal clamp members 8a and 8b are provided along opposite horizontal sides of the fabric frame 5, and vertical clamp members 9a and 9b are provided along opposite vertical sides of the fabric frame 5.
  • Working fabric N can be fixed to the fabric frame 5 by means of these horizontal and vertical clamp members 8a, 8b and 9a, 9b.
  • the working fabric N is paid out from a fabric supply stand S1 disposed behind the embroidery sewing machine, and then fixed to the fabric frame 5 via the clamp members 8a, 8b, 9a and 9b.
  • FIG. 2 is a schematic side view of the embroidery dewing machine according to the embodiment, which particularly shows a case where a quilting operation is to be performed by the sewing machine.
  • a working fabric N comprising cotton (N3) sandwiched between two fabrics (N1 and N2), is supplied from the supply stand S1 to the fabric frame 5.
  • the horizontal clamp members 8a and 8b are members of an identical construction merely positioned in opposed relation to each other, and thus, only one of the horizontal clamp members (i.e., front horizontal clamp member) 8a will be representatively explained below.
  • Fig. 3 is a plan view showing in enlarged scale a left end portion of the front horizontal clamp member 8a
  • Fig. 4 is a left side view of the horizontal clamp member 8a
  • Fig. 5 is a sectional view taken along the I - I line of Fig. 3
  • Fig. 6 is a sectional view taken along the II - II of Fig. 3.
  • the horizontal clamp member 8a includes a fixing sash 10 fixed to the fabric frame 5 via a bracket 11.
  • Pipe members 13 are disposed between the bearings 12, and the pipe members 13 are interconnected via pivot shafts 14 pivotably supported by the respective bearings 12.
  • Retaining member 16 and holding member 17 are provided on each of the pipe members 13 via mounting members 15 mounted on the outer peripheries of opposite end portions and middle portion of the pipe member 13.
  • the mounting members 15 provided on the opposite end portions of each of the pipe members 13 are fixed to the corresponding pivot shaft 14 by means of a screw 18, and each of the mounting members 15 has an elongated mounting hole.
  • each of the retaining members 16 comprises a core portion 16a having suitable hardness extending in the horizontal direction and a contact portion 16b covering the outside of the core portion 16a, and the contact portion 16b is formed of, for example, resilient rubber that is deformable and hardly slippable relative to the working fabric N when contacting the fabric N.
  • the leftmost pivot shaft 14 has a left end portion projecting beyond the fixing sash 10, and an actuating member 19 is fixed to the projecting left end portion of the pivot shaft 14.
  • Connecting pin 20 is fixed to the distal end of the actuating member 19, and the connecting pin 20 is fitted in a connecting hole 22a of a connecting member 22 that is fixed to a rod of an air cylinder 21.
  • the air cylinder 21 is fixed to a mounting portion 11a formed on the bracket 11.
  • Right end portion of the horizontal clamp member 8a is constructed similarly to the above-described left end portion, so that the horizontally-elongated retaining member 16 and holding member 17 are caused to pivot together by activation of the two, left and right, air cylinders 21.
  • the working fabric N is fixed (clamped) and released (unclamped) to and from the fabric frame 5 by the pivoting movement of the retaining and holding members 16 and 17.
  • the fabric frame 5 has abutting engagement sections 23 for holding or sandwiching and fixing the working fabric N in conjunction with the retaining members 16, and rubber members 24 and 25 are provided on each of the abutting engagement sections 23 to form a substantial right-angled corner portion.
  • FIG. 4 shows the working fabric N in a released (or unclamped) position or state
  • FIG. 4 shows the working fabric N in a fixed (or clamped) position or state.
  • the working fabric N is passed between the fabric frame 5 and each of the fixing sashes 10 and positioned on the fabric frame 5.
  • each of the air cylinders 21 is activated, so that the corresponding retaining member 16 and holding member 17 are caused to pivot to positions shown in (b) of Fig. 4 through the pivoting movement of the pivot shafts 14 and pipe members 13.
  • the working fabric N can be held between the retaining members 16 and the abutting engagement sections 23 (rubber members 24 and 25) and thereby fixed relative to the fabric frame 5.
  • Fig. 7 shows, in further enlarged scale, how the working fabric N is held between the retaining members 16 and the abutting engagement sections 23 and fixed relative to the fabric frame 5.
  • (a) of Fig. 7 shows the contact portion 16b of the retaining member 16 having contacted a distal end portion of the abutting engagement section 23 (i.e., distal end portion of the rubber member 25) as the retaining member 16 is caused to pivot in a counterclockwise direction of Fig. 7.
  • the working fabric N is held or sandwiched between the retaining member 16 and the distal end portion of the abutting engagement section 23 (i.e., distal end portion of the rubber member 25).
  • Teflon tape 26 is attached to the upper surface of the distal end portion of the abutting engagement section 23 (rubber member 25) so that the fabric N can be easily tensioned by the pivoting movement of the retaining member 16. Namely, because the upper surface of the working fabric N held between the retaining member 16 and the abutting engagement section 23 contacts the hardly-slippable retaining member 16 while the lower surface of the working fabric N contacts the easily-slippable Teflon (trademark) tape 26, the fabric N is pulled by the retaining member 16 in the pivoting direction (rightward in Fig.
  • retaining member 16 etc. that are similar in construction to the aforementioned retaining member 16 etc. Because the retaining member 16 etc. for the rear horizontal clamp member 8b are provided in opposed relation to the retaining member 16 etc.
  • FIG. 7 shows the retaining member 16 at a time point when the lower end of the retaining member 16 has reached immediately beneath the shaft center of the pivot shafts 14 during the pivoting movement of the retaining member 16 from the position indicated in (a) of Fig. 7 to (c) of Fig. 7. At that time, the lower end of the retaining member 16 is located at a lowermost position pressing and distorting the rubber member 25.
  • the holding member 17 provided in relation to the retaining member 16 functions to depress the working fabric N to reduce a distance between the fabric N and the table 2 as it is caused to pivot to the fixing position (clamping position); in this way, it is possible to minimize fluttering of the fabric N caused by the sewing and thereby prevent a thread breakage etc.
  • a positioning mechanism 27 is provided on a substantial middle portion of each of the horizontal clamp members 8a and 8b.
  • Fig. 8 is a perspective view of the positioning mechanism 27, and
  • Fig. 9 is a partly sectional side view of the positioning mechanism 27.
  • the positioning mechanism 27 has a base member 28 fixed to the fixing sash 10.
  • Air cylinder 30 is fixed to the base member 28 via a bracket 29, and an elevator member 31 is connected to the distal end of the air cylinder 30.
  • Two guide shafts 32 are provided on and extend vertically upward from the elevator member 31 and have lower portions inserted through guide holes formed in the base member 28.
  • the elevator member 31 is caused to ascend and descend while being guided by the guide shafts 32.
  • Guide plate 33 is fixed to the upper surface of the fabric frame 5 corresponding to the elevator member 31, and a guide groove 31a engaging with the guide plate 33 is formed in the lower surface of the elevator member 31.
  • the fixing sash 10 for each of the horizontal clamp members 8a and 8b is fixed, only at its opposite end portions, to the fabric frame 5 via the bracket 11 (Fig. 3) and spanning the fabric frame 5.
  • the positioning mechanism 27 is therefore provided to avoid this inconvenience; that is, when the working fabric N is to be fed, the positioning mechanism 27 activates the air cylinder 30 to cause the elevator 31 to ascend to a position indicated by a solid line in Fig. 9 so that the elevator 31 does not interfere with the feeding of the fabric N.
  • the air cylinder 30 is activated, prior to the start of the pivoting movement of the retaining member 16, to cause the elevator 31 to descend to a position indicated by an imaginary line in Fig. 9 and thereby raise the hanging-down middle portion of the fixing sash 10 so that the hanging-down middle portion can be positioned at generally the same height as the opposite end portions of the fixing sash 10.
  • the retaining member 16 can be caused to pivot reliably. Further, because the guide groove 31a of the elevator member 31 engages the guide plate 33, a position, in the front-rear direction (left-right direction in Fig. 9), of the fixing sash 10 can be appropriately restricted, the fixation, by the retaining member 16, of the fabric N can be effected reliably. With such arrangements, it is also possible to prevent vibration of the fixing sash 10 during the movement of the fabric frame 5.
  • the elevator member 31 in the lowered position allows the working fabric N to be sandwiched between the guide groove 31a and the guide plate 33.
  • Cushioning material such as felt, may be attached to the guide groove 31a and guide plate 33 to prevent the working fabric N from getting scratched by the sandwiching between guide groove 31a and the guide plate 33.
  • the aforementioned position restricting structure may be constructed in any desired manner, without being limited to the combination of the guide groove 31a (recessed portion) and guide plate 33 (projecting portion), as long as it can appropriately restrict the position of the fixing sash by a combination of recessed and projecting portions.
  • Pivot levers 37 are pivotally supported on the brackets 35, and each of the pivot levers 37 is connected, via a pin 37a, to a rod portion of the corresponding first actuator 36.
  • Holding sash 38 has a retaining member 39 provided thereon, and the retaining member 39 has substantially the same length as the holding sash 38.
  • the retaining member 39 is formed of, for example, resilient rubber that is deformable and hardly slippable relative to the working fabric N when contacting the fabric N.
  • Holding member 40 is provided on a distal end portion of the holding sash 38. Rubber member 41 is attached to the upper surface of the vertical sash 37 in a position corresponding to the retaining member 39.
  • Support member 42 is fixed at its opposite ends to the vertical sash 37, and an auxiliary member 43 for preventing lift-up of a middle portion of the holding sash 38 is fixed to the support member 42.
  • the working fabric N is sandwiched and fixed between the retaining member 39 and the rubber member 41 of the vertical sash 34 by the first air cylinder 36 being activated to cause the pivot lever 37 to pivot downward so that the holding sash 38 is brought to a position shown in Fig. 10.
  • the working fabric can be fixed more reliably with the auxiliary member 43 holding the middle portion of the holding sash 38 against unwanted lift-up.
  • the first air cylinder 36 is activated to cause the pivot lever 37 to pivot upward, the holding sash 38 is moved upward so that the fixation of the working fabric N is canceled.
  • Second air cylinders 44 are provided near the opposite ends of the vertical clamp member 9a, and the second air cylinders 44 are mounted to the horizontal clamp members 8a and 8b, respectively. Rod portions of the two second air cylinders 44 are connected to the vertical sash 34 near the opposite ends of the sash 34, and the vertical sash 34 can be moved in the left-right direction through activation of the second air cylinders 44. After the working fabric N is fixed in place through activation of the first air cylinders 36, the second air cylinders 44 are activated so that the vertical sash 34 is moved in such a direction as to increase the distance between the opposed vertical clamp members 9a and 9b.
  • Fig. 11 is a side view showing an example of the supply stand S1.
  • the supply stand S1 includes a pair of stand frames 45 spaced apart from each other in a width direction of the sewing machine.
  • Two abutting engagement sections 46a and 46b and one abutting engagement section 46c for supporting a roll of the working fabric N are provided on a front (left in Fig. 11) portion and rear (right in Fig. 11) portion, respectively, Where quilting is to be performed, rolls of fabric (N1 and N2) are set on the two front abutting engagement sections 46a and 46b while a roll of cotton (N3) is set on the rear abutting engagement section 46c, as seen in Fig. 2.
  • the supply stand S1 also includes a pay-out mechanism for paying out a fabric in a case where embroidery is to be performed on the fabric and the fabric is a thin fabric.
  • the pay-out mechanism includes a pivot 47 pivotably mounted on the stand frame 45. Rod portion of an air cylinder 48 is connected, at its distal end, to the pivot lever 47 via a pin, and the air cylinder 48 is pivotably fixed to the stand frame 45.
  • Engaging portion 47a in the form of an elongated hole is formed in a distal end portion of the pivot lever 47, and a shaft portion 49a of a vertically-movable pay-out member 49 is engaged in the engaging portion 47a.
  • the shaft portion 49a of the pay-out member 49 is also engaged in a guide hole 50a of a plate 50 that is in turn fixed to the stand frame 45.
  • a rack gear 51 is fixed to the plate 50 along the guide hole 50a, and a pinion gear 52 meshing with the rack gear 51 is fixedly mounted on the shaft portion 49a of the pay-out member 49.
  • the pay-out member 49 is vertically moved along the guide hole 50a of the plate 50. Namely, the pay-out member 49 is vertically moved while being rotated via the rack gear 51 and pinion gear 52.
  • a roll of the fabric N is set on the front upper abutting engagement section 46a, and a portion of the fabric N paid out from the roll is fed, by way of a guide shaft 53, to the pay-out member 49, passed around the pay-out member 49 and then directed to the fabric frame 5 via a later-described position adjustment member 54 provided on a rear end portion of the machine table 2.
  • the pay-out member 49 is vertically movable between a lower-end pivot position indicated by a solid line in Fig. 11 and an upper-end pivot position indicated by an imaginary line in Fig. 11.
  • the air cylinder 48 When the working fabric N is fixed to the fabric frame 5, the air cylinder 48 is activated to cause the pivot lever 47 from a pivot position indicated by an imaginary line in Fig. 11 to a pivot position indicated by a solid line in Fig. 11.
  • the pay-out member 49 is moved from the upper-end pivot position to the lower-end pivot position, so that another portion of the working fabric N, corresponding to an amount to be fed to the fabric frame 5, is paid out from the roll, during which time the pay-out member 49 is lowered while being rotated, in a direction opposite the fed direction of the working fabric N, via the rack gear 51 and pinion gear 52. This is for the purpose of preventing the working fabric N from being paid out more than necessary.
  • the pivot lever 47 is caused to pivot, through activation of the air cylinder 48, from the solid-line position of Fig. 11 to the imaginary-line position of Fig. 11, so as to move the pay-out member 49 upward to the upper-end pivot position.
  • the working fabric N is fed out. In this way, the feeding-out of the working fabric N can be carried out smoothly.
  • the position adjustment member 54 includes two supporting rods 55.
  • Each of the supporting rods 55 is fixed at its opposite ends to brackets 56 that are in turn fixed to the rear end portion of the table 2.
  • Air cylinder 57 is disposed beneath substantial middle portions of the two supporting rods 55, and it is fixed to a bracket 58 that is in turn fixed to the rear end portion of the table 2.
  • Supporting member 59 for supporting the two supporting rods 55 is fixed to the air cylinder 57, so that the supporting member 59 is vertically movable through activation of the air cylinder 57.
  • the working fabric N paid out from the supply stand S1 to the fabric frame 5 is placed on the two supporting rods 55 of the position adjustment member 54.
  • the supporting member 59 is normally in a lowered position as shown in Fig. 13, during which time an intermediate portion of each of the supporting members 59 is located at the same height as opposite end portions of the supporting member 59.
  • the air cylinder 57 is activated to move upward the supporting member 59, so that the intermediate portion of the supporting member 59 is raised to be bent higher than the opposite end portions.
  • the working fabric N passing over the two supporting rods 55 is pulled toward the opposite end portions of the supporting member 59 lower in height than the intermediate portion.
  • the position adjustment member 54 and pay-out mechanism of the supply stand S1 constructed in the aforementioned manner can prevent the working fabric N from meandering during feeding of the fabric N.
  • the working fabric N is paid out from the supply stand S1 and passed over the fabric frame 5 in such a manner that it can be clamped by the individual clamp members 8a, 8b, 9a an 9b, and then the fabric N is directed to the take-up stand S2.
  • the working fabric N is fixed to the fabric frame 5 by means of the clamp members 8a, 8b, 9a an 9b.
  • the first air cylinders 36 for the clamp members 9a an 9b are activated so that the widthwise end portions of the working fabric N are sandwiched and fixed between the retaining members 39 and the rubber members 41 of the vertical sashes 34.
  • the air cylinder 30 of each of the positioning mechanisms 27 is activated so that the hanging-down middle portion of the fixing sash 10 is raised.
  • the air cylinders 21 for the horizontal clamp members 8a and 8b are activated, so that the working fabric N is sandwiched between the retaining members 16 and the rubber members 24 and 25.
  • the second air cylinders 44 for the vertical clamp members 9a and 9b are activated to move the vertical sashes 34, so that the working fabric N is stretched taut.
  • the sewing machine Upon completion of the sewing, the sewing machine is deactivated, and the individual air cylinders are activated to cancel the fixation, to the frame 5, of the working fabric N (i.e., unclamp the fabric N).
  • the working fabric N Once the fixation of the working fabric N is canceled, the working fabric N is fed so that another to-be-embroidered portion of the fabric N is positioned within the area surrounded by the frame 5, the individual air cylinders are activated to cause the other to-be-embroidered portion of the fabric N to be fixed to the fabric frame 5 in the same manner as set forth above, and then the sewing machine is again activated to perform sewing on the fixed to-be-embroidered portion. Namely, the sewing machine repeats the sewing operation while changing the to-be-fixed position of the working fabric N relative to the fabric frame 5.
  • the fixation, by the horizontal clamp members 8a and 8b, of the working fabric N can be reinforced by the pivoting movement of the retaining members 16. Further, because the retaining members 16 serve to even more firmly fix the working fabric N by pulling the fabric N, the fabric N can be fixed firmly with increased reliability even when the fabric N is a thin fabric. Further, with the positioning mechanisms 27 positioned on intermediate portions of the horizontal clamp members 8a and 8b, not only the working fabric N can be fixed firmly at any positions (particularly, intermediate portion) of the horizontal clamp members 8a and 8b, but also vibration of the fixing sashes 10 during the movement of the fabric frame 5 can be prevented so that the fixation of the working fabric N can be even further reinforced.
  • the horizontal clamp member 8a or 8b is provided with a further retaining member 60 in addition to the retaining member 16 and holding member 17 pivotable as in the above-described embodiment.
  • the further retaining member 60 is caused to pivot in a direction opposite the pivoting direction of the retaining member 16.
  • the abutting engagement section 23 of the fabric frame 5 has a retaining wall 62.
  • the abutting engagement section 23 includes the rubber members 24 and 25 as in the above-described first embodiment , but also a rubber member 63 corresponding to the retaining member 60 is provided on the right side surface of the retaining wall 62.
  • the retaining member 16 is caused to pivot to a position as indicated by an imaginary line in Fig. 14, so as to sandwich the fabric N between the retaining member 16 and the rubber members 24 and 25.
  • the working fabric N can be even more firmly because the fabric N is sandwiched by the retaining members 16 and 60 at left and right sides of the retaining wall 62.
  • the individual members may be driven by electric actuators or other suitable actuators.
  • the clamping by the horizontal clamp members 8a and 8b has been described as effected on the basis of the pivoting movement of the retaining members 16, the present invention is not so limited.
  • the vertical clamp members 9a and 9b too may function to fix (clamp) the working fabric N on the basis of pivoting movement of similar retaining members.
  • any other suitable number, rather than one, of the positioning mechanisms 27 may be provided distributively at suitable intermediate positions of the corresponding horizontal clamp member 8a or 8b. Note that positioning of a to-be-next-sewn portion of the working fabric N within the area surrounded by the fabric frame 5 may be effected either by movement of the fabric frame 5 or by the sewing-completed portion of the fabric N being taken up by the take-up stand S2.
  • a holding-down member for holding down the working fabric N near the sewing position of the machine head.
  • Such a holding-down member may be vertical moved by an actuator provided on the machine head 3.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP05748797.7A 2004-06-09 2005-06-09 Nähmaschine Withdrawn EP1760178A4 (de)

Applications Claiming Priority (2)

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JP2004171926A JP2005348906A (ja) 2004-06-09 2004-06-09 ミシン
PCT/JP2005/010616 WO2005121432A1 (ja) 2004-06-09 2005-06-09 ミシン

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EP1760178A1 true EP1760178A1 (de) 2007-03-07
EP1760178A4 EP1760178A4 (de) 2015-01-07

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EP (1) EP1760178A4 (de)
JP (1) JP2005348906A (de)
KR (1) KR100747380B1 (de)
CN (1) CN1965120A (de)
WO (1) WO2005121432A1 (de)

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Publication number Priority date Publication date Assignee Title
JP2009082386A (ja) 2007-09-28 2009-04-23 Tokai Ind Sewing Mach Co Ltd ミシン
CN102995307A (zh) * 2011-09-16 2013-03-27 天津宝盈电脑机械有限公司 立式绗缝机移动上料装置
CN105401356B (zh) * 2015-11-02 2018-09-18 华南师范大学 一种带自动送料收料装置的绣花机
CN105442206B (zh) * 2016-01-26 2017-07-11 嘉兴市正丰商标织造有限公司 一种简易的商标编织设备
CN109537187A (zh) * 2018-12-26 2019-03-29 东莞市扬侨电子自动化设备有限公司 一种用于缝纫机的送料构造
CN114481467B (zh) * 2022-02-18 2023-03-10 青岛铠硕机械科技有限公司 一种大棚被生产线叠压整平机

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JPH0426449A (ja) * 1990-05-22 1992-01-29 Aisin Seiki Co Ltd 自動縫製装置
JPH0631073A (ja) * 1992-07-14 1994-02-08 Aisin Seiki Co Ltd ミシンの布支持装置
DE19923912A1 (de) * 1999-05-26 2000-11-30 Zsk Stickmasch Gmbh Vorichtung und Verfahren zum Besticken eines Bandes mittels einer Stickmaschine

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DE3733886C1 (en) * 1987-10-07 1989-02-02 Pfaff Ind Masch Clamping device for the embroidery material on embroidering machines
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JP2770550B2 (ja) * 1990-05-08 1998-07-02 ブラザー工業株式会社 自動縫製装置の布送り装置
JP2570675Y2 (ja) * 1992-11-16 1998-05-06 ブラザー工業株式会社 加工布挟持用クリップ
JPH08243280A (ja) * 1995-03-13 1996-09-24 Brother Ind Ltd クランプ式被縫製布保持枠
JPH08252387A (ja) * 1995-03-15 1996-10-01 Brother Ind Ltd クランプ式被縫製布保持枠
JP2753973B2 (ja) * 1995-07-28 1998-05-20 株式会社コンドー・マシナリー 被縫製物張架枠
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JPH02104760A (ja) * 1988-10-11 1990-04-17 Barudan Co Ltd 刺繍ミシンの保持枠
JPH0426449A (ja) * 1990-05-22 1992-01-29 Aisin Seiki Co Ltd 自動縫製装置
JPH0631073A (ja) * 1992-07-14 1994-02-08 Aisin Seiki Co Ltd ミシンの布支持装置
DE19923912A1 (de) * 1999-05-26 2000-11-30 Zsk Stickmasch Gmbh Vorichtung und Verfahren zum Besticken eines Bandes mittels einer Stickmaschine

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See also references of WO2005121432A1 *

Also Published As

Publication number Publication date
JP2005348906A (ja) 2005-12-22
EP1760178A4 (de) 2015-01-07
KR100747380B1 (ko) 2007-08-07
CN1965120A (zh) 2007-05-16
KR20070004954A (ko) 2007-01-09
WO2005121432A1 (ja) 2005-12-22

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