JP2554348Y2 - Machine with cord for sewing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presser with a cord for a sewing machine. 2. Description of the Related Art A conventional corded embroidery is disclosed in Japanese Patent Application Laid-Open No. 61-2 / 1986.
As shown in 96163, the pattern thread is guided by a thread guide finger fixed in a mounting bracket screwed to the sewing machine head to the vicinity of a sewing needle reciprocating up and down, and the sewing needle engages with the pattern thread. There is a device in which the pattern yarn is fixed to the base fabric by a combined and penetrating pattern yarn and a stitching yarn. However, since this prior art coding device is fixed to a sewing machine, sewing other than the coding is performed with this sewing machine. Has the drawback that makes it impossible. The present invention enables both ordinary sewing and cording work to be performed by a single sewing machine, and includes a cloth presser and a cord supporter. The purpose is to make the unit into a structure that facilitates replacement work. SUMMARY OF THE INVENTION The present invention facilitates replacement of a presser bar supported by a sewing machine frame with another cloth presser by providing a presser bar mounting portion in a cording device. A play is provided between the driven-side engaging member provided with the corded device and the driving-side needle bar driving arm, thereby facilitating attachment to the presser bar. According to the present invention, a needle bar is provided on the sewing machine frame so as to be vertically movable and has an arm, and a presser bar supported on the sewing machine frame in a state parallel to the needle bar. In a sewing machine cord-attached device which is detachably fixed to the presser bar of a sewing machine capable of sewing and interlocks with the vertical movement of the needle bar, an arm for slidably supporting an attachment portion to the presser bar and a presser body. A base plate on which a portion is formed, and an engaging arm that engages with the needle bar is provided at an upper end of a presser foot bar supported by the base plate, and a cloth presser piece having a needle drop hole at a lower end is formed. A presser body provided with a cloth presser portion, the upper end of the base plate is pivotally attached to a shaft portion so as to be swingable,
A cord supporting piece for slidably holding the cord C is formed at the lower end, a cam portion is formed on a side edge of the intermediate portion, and the cam portion can contact the engaging member of the needle bar by a spring action. And a unit so that the presser bar can be exchanged together with another cloth presser, and the cloth presser is moved up and down in conjunction with the vertical movement of the needle bar, and the cord support is swung. It is characterized by having done. An embodiment of the present invention will be described below with reference to the drawings. A drive shaft (not shown) is rotatably supported on the sewing machine frame (not shown). Further, the sewing machine frame reciprocates vertically (in the direction of arrow A) in conjunction with the rotation of the drive shaft. A needle bar 1 to be pressed is supported, and a presser bar 2 parallel to the needle bar is supported at a position adjacent to the needle bar. [0007] At the lower end of the presser bar, a presser mounting portion 3 composed of a substantially U-shaped flat surface is formed, and a mounting screw 4 is screwed to the presser mounting portion. Various fixing members (not shown) and a corded device 5 are exchangeably fixed to the presser mounting portion 3 by the mounting screws. The cording device 5 includes a substantially U-shaped sheet metal base plate 6 fixed to the presser bar 2, a pressing body 7 supported on the base plate so as to be capable of sliding vertically.
And a cord support 8 that is swingably supported by the base plate 6. The base plate 6 is provided with an attachment portion 9 for attaching the holding rod 2 to the holding attachment portion 3. Holes 6A and 6B having the same axial center are formed in two arms formed in parallel with the U-shaped portion. A vertically extending guide hole 6C is formed in a part of the vertical wall which is formed and connects both arms. The presser body 7 includes a presser foot 10 rotatably fitted in holes 6A and 6B formed in two arms of the base plate 6, and a cloth provided at the lower end of the presser foot. Presser part 11
And an engagement arm 12 provided at the upper end of the presser foot bar. The engaging arm is provided such that the end 12a can be engaged with the arm 1a provided on the needle bar 1 from above.
The cloth holding part 11 has a needle drop hole 11 of an appropriate size at the tip.
and a guide portion 11C extending parallel to the presser foot near the joint with the presser foot 10 and slidable in the guide hole 6C of the base plate 6. Is provided. A spring receiving plate 10a is fixed to an appropriate position of the presser foot bar 10, and a coil spring 13 is wound between the spring receiving plate and the upper arm of the base plate 6. By attaching the coil spring to the presser foot bar 10, the presser bar 2 is lowered by a presser lifting lever (not shown), and when the needle bar 1 is driven and lowered, the lower end of the presser foot bar 10 The cloth pressing piece 11b of the provided cloth pressing section 11 presses the cloth. When the needle bar 1 is raised, the engaging arm 12 is engaged with the arm portion 1a of the needle bar 1, so that the cloth pressing piece 11b is raised against the action of the coil spring 13 and separated from the cloth. . The cord support 8 has a U-shaped upper end 8a pivotally attached to the base plate 6 by a shaft 14.
A cam portion 8C is formed on a side edge of the lever portion 8b extending downward, and a cord supporting piece 8d for slidably holding the cord C is formed at a lower end. When the needle 15 attached to the lower end of the needle bar 1 descends, the cord supporting piece
Hold it slightly out of the end to make it easier to penetrate,
The cloth presser piece 11b faces the needle drop hole 11a. Further, a spring 16 whose one end is locked to the lever portion 8b is wound around the shaft portion 14 of the U-shaped upper end portion 8a, so that the cord supporting member 8 always moves in the direction approaching the needle 15 ( (Arrow B). Stopper pin 1
Reference numeral 7 is provided on the vertical wall of the base plate 6 to prevent the cord support 8 from rotating in the direction of arrow B at an appropriate position. Since the present invention has the above-mentioned structure, it can be detachably fixed to the presser mounting portion 3 at the lower end of the presser bar 2 like other various cloth pressers. First, put the cloth on the presser foot 1
1b, the cord C is inserted into the cord supporting piece 8d of the cord supporting body 8 and the sewing machine is operated. Then, the needle bar 1 is lowered and the arm 1a is engaged with the engaging arm at the upper end of the pressing body 7. 12
The cord supporting member 8 which presses the cloth by the action of the coil spring 13 and presses the cloth by the action of the coil spring 13 and engages with a part of the side surface of the engaging body 18 attached to the needle bar 1 via the cam 8C of the lever. The cord supporting piece 8d is swung and the cord C is
To just below the needle point. Further, the needle 15 descends and penetrates a portion of the cord C slightly protruding from the end of the cord supporting piece 8d which is separated from the needle plate surface (at this time, the cord C is partially pulled out from the cord supporting piece 8d). After that, see FIG.
The cord is bent in the shape of a letter, penetrates the cord C again at the position closest to the cloth, and the cord is sewn to the cloth (see FIG. 4). The cord supporting piece 8d interlocks with the lowering of the needle.
Is further swung in the direction opposite to the arrow B (at this time, the cord C is partially pulled out from the cord supporting piece 8d),
When the needle is raised, it is returned to the needle drop position again. At this time, the cord C is sent to the needle drop position side by the cord supporting piece 8d, and stands by in an optimal state for penetration of a needle which is slightly above the cloth. Next, another embodiment of the present invention will be described with reference to FIGS. The description of the common parts with the above-described embodiment is omitted. The cord support 8 is pivotally attached to the base plate 6 and has a support main body 21 having a cam portion 21a formed on a side edge thereof and an upper end fixed to the back surface of the support main body. 22a and the cord support piece 22b at the lower end
And a cord support 22 made of a flexible material such as a thin leaf spring material. Since the embodiment has the structure described above, if the operator forgets to operate the presser foot lifting lever, that is, if he forgets to lower the presser foot and operates the sewing machine, the corded device 5 is moved to a position higher than an appropriate position. When the needle bar descends, the arm 1a of the needle bar 1 comes down along the surface of the support main body 21 (see FIG. 7). The abutting step 22a of the cord support 22 projecting from the lower edge toward the front side (FIG. 6), but the cord support is made of a flexible material and supported at the upper end, so
(In the direction of arrow D in FIG. 8), and the arm 1a is further retracted.
When it is lowered, it comes into contact with the cord supporting piece 22b of the cord supporting body 22, but the cord supporting piece is also retracted (FIG. 9).
reference). As described above, when the presser lifting lever is forgotten to be lowered before the sewing machine is operated, it is possible to prevent the needle bar 1 from being broken by the collision of the arm 1a of the needle bar 1 with the cord support 8. The present invention has the structure and operation as described above. The unitization makes it possible to attach / detach in place of various cloth holders in a sewing machine capable of ordinary sewing.
Accordingly, a cording operation can be performed with a sewing machine capable of performing ordinary sewing. In addition, the present invention enables intermittent drive of the presser foot and the feeding operation of the cord in conjunction with the vertical movement of the needle bar. The sewing with a beautiful cord can be performed by a device which is compact and easy to attach and detach. Yes, it is practically effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, FIG. 1 is an external view of a corded device of the present invention, FIG. 2 is an external view of the present invention when a needle is penetrated, and FIG. 4 is an enlarged side view of a main part of the device of the present invention, FIG. 4 is an enlarged side view of a main part of the device of the present invention, FIG. 5 is an external view of another embodiment of the present invention, and FIG. 6 is an external view of another embodiment of the present invention. Figure,
7 is a state diagram of another embodiment of the present invention, FIG. 8 is a state diagram of another embodiment of the present invention, and FIG. 9 is a state diagram of another embodiment of the present invention. ... arm part, 2 ... holding rod, 6 ... base plate, 7 ... holding body, 8 ... cord support, 8c ... cam part, 8d ... cord support piece, 9 ... mounting part, 10 ... holding foot, 11 ... cloth Presser part, 11a ... cloth presser piece, 14 ... shaft part, 18 ... engaging body,

   ────────────────────────────────────────────────── ─── Continuation of front page    (56) References JP-A-60-92791 (JP, A)                 Shokai 63-88279 (JP, U)                 Actually open, Showa 54-30558 (JP, U)                 Actual opening 1974-99454 (JP, U)                 Shokai Sho 63-95582 (JP, U)                 Tokiko Hei 3-68146 (JP, B2)                 JP-B 63-7975 (JP, B2)

Claims (1)

(57) [Claims for registering a utility model] A needle bar 1 provided with an arm 1a which is vertically movably supported by a sewing machine frame, and a presser bar 2 which is supported by the sewing machine frame in a state parallel to the needle bar. In a device with a cord for a sewing machine, which is detachably fixed to the presser bar of a sewing machine capable of ordinary stitching and which is interlocked with the vertical movement of the needle bar, A base plate 6 on which an arm portion slidably supported is formed, and an engaging arm 12 for engaging the needle bar 1 is provided at an upper end of a presser foot bar 10 supported by the base plate, and a needle is provided at a lower end. A presser body 7 provided with a cloth presser portion 11 forming a cloth presser piece 11b having a hole 11a, and a code C slidably mounted on the base plate 6 such that the upper end of the presser body 7 is swingable at a shaft portion 14. A cord supporting piece 8d is formed so as to be held as possible, and a cam portion 8c is formed on a side edge of the intermediate portion. A cord supporting device for a sewing machine, comprising: a cord supporting member 8 which can be brought into contact with the engaging member 18 by a spring action.