JPS6124224Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cloth holding device for a sewing machine, and in particular, a piece of marking such as a name, label, etc. is held between the feed plate and the presser foot provided at the tip of the presser arm along with the fabric. This invention relates to a fabric holding device for a sewing machine that sews pieces onto fabric.

Conventionally, as this type of device, as shown in Japanese Utility Model Publication No. 1983-5508 filed by the present applicant,
A presser foot placed above the feed plate includes a first presser foot for positioning a sign piece such as a name or label, and a second presser foot for pressing a sign piece placed on the fabric. A fabric clamping device for a cycle sewing machine, which is divided into two parts, and when the first presser foot lowers, the marker piece is positioned by the presser foot, and when the second presser foot lowers, the fabric and the marker piece are clamped. Equipment is provided. However, in this device, since the second presser foot is lowered at the same time as the first presser foot is lowered, the second presser foot is not fully positioned before the first presser foot is lowered.
The distance between the presser foot and the fabric also becomes narrow, resulting in defects such as the marking pieces being sewn without being accurately positioned, and the positioning work being extremely difficult.

This invention was made to eliminate the above-mentioned defects, and it is possible to move the positioning member for positioning the sign piece such as a name or label at a predetermined position on the fabric in the vertical direction relative to the presser arm. By attaching the presser foot and being able to control it independently of the presser foot, the positioning work is facilitated and the rear presser foot can be lowered after being accurately positioned.

The details of the present invention will be explained below with reference to FIGS. 1 to 3 showing an embodiment of the present invention as a fabric holding device for a sewing machine.

In the diagram, 1 is the sewing machine table, 2 is the sewing machine frame, and 3
is a sewing machine needle which is arranged above the sewing machine table 1 and moves up and down. 4 is a moving plate that can be moved by known means in the X-axis and Y-axis directions (in the horizontal plane) by a pulse motor (not shown);
A feed plate 5 having an opening 5a is screwed to one end thereof, and an arm holder 6 having a rotating shaft 7 is fixed to the upper surface of the other end by a screw 8. Reference numeral 9 denotes a rotating arm for a presser arm, one end of which is rotatably supported on the rotating shaft 7, and an adapter 11 at the free end.
The presser attachment body 12 is fixed via. 13
is a crank holder attached to the presser attachment body 12, and has a built-in rack pinion (not shown), and the rack (not shown) is reciprocated by the action of the wire 14, and the pinion (not shown) that engages with the rack (not shown) is reciprocated by the action of the wire 14. rotational motion is applied to
Reference numeral 15 denotes a presser foot for pressing the marker piece P placed on the fabric W during sewing with a sewing machine, and a presser foot support member 16 having a rotating shaft is fixed to the upper end of the presser foot. Reference numeral 17 denotes a presser crank, which has a bent middle portion, one end supported by the rotating shaft of the presser support member 16, and the other end connected to a pinion (not shown) built in the crank holder 13, which is used to prevent the sewing machine from sewing during sewing. The reversal takes place under the action of the wire 14.

18 is a fixed arm with a screw 19 at the base end.
is fixed to the arm holder 6 by.
A rotating lever 21 has one end rotatably supported by the rotating shaft 20 of the fixed arm 18, and is connected to the wire 23 at an intermediate portion. Reference numeral 24 denotes a two-arm lever rotatably supported on the rotary shaft 10 of the rotary arm 9 at the intermediate portion, and one end rotatably supported on the rotary shaft 22 provided on the rotary lever 21. At the same time, the other end is connected to the wire 25.

The rotating arm 9 is moved from the rotating shaft 7 through a kind of toggle mechanism consisting of the two-arm lever 24, the rotating lever 21, etc. by the action of a wire 23 and a wire 25 driven by a drive device (not shown). The presser foot 15, which is rotated around the presser foot and attached to its tip, is given a movement of moving up and down between a raised position and a lowered position.

Reference numeral 26 denotes a positioning lever support member, which is screwed to the presser attachment body 12 at its base end and has a rotation shaft 27 at its other end. 28,2
Reference numeral 9 denotes screws whose tips protrude outward at the left and right ends of the base end of the positioning lever support member 26, and the amount of outward protrusion thereof can be adjusted via nuts 30 and 31. Reference numeral 32 denotes a positioning lever whose one end is rotatably supported by the rotation shaft 27, and extends left and right at an intermediate step. Reference numerals 33 and 34 denote positioning pieces having cutouts 33a and 34a for positioning at one end, respectively, and the mounting position in the left and right direction can be adjusted to the left and right ends of the positioning lever 32 through oval holes 33b and 34b, respectively. is screwed to. 3
5 and 36 have recesses 35a and 36a in the middle, respectively.
A plate spring is screwed to the middle part of the positioning lever so that it can be expanded left and right, and is arranged so as to be able to engage with the protruding parts of the screws 28 and 29. Reference numeral 37 denotes a positioning lever lowering pin fixed to the middle of the other end of the positioning lever 32, and by pressing it from above, the protrusions of the screws 28 and 29 and the recesses 35a of the leaf springs 35 and 36 are removed. 36a can be manually released against the spring pressure, and the positioning lever 32 can be lowered from the raised position to the lowered position independently of the presser foot 15.

Next, the operation of this apparatus configured as described above will be explained below.

When the power is turned on or after sewing is completed, when a presser foot lifting pedal (not shown) is pressed, the wire 23 acts to move the rotating arm 9 and the positioning support member 2 integrally attached thereto.
6 is held in the raised position shown in FIG. At this time, the recess 35 of the leaf spring of the positioning lever 32
a, 36a are engaged with the protrusions of the screws 28, 29, so that the positioning lever 32 is held in the raised position together with the positioning support member.

Here, the fabric W is placed on the feed plate 5 by the worker.
When the positioning lever lowering pin 37 is pressed downward after the plate spring is placed, the recess 3 of the leaf spring
5a, 36a are disengaged from the projections of the screws 28, 29, and only the positioning lever 32 is lowered. (See FIG. 1) Next, after the worker positions the fabric W, the desired marker piece P is placed on the positioning lever 32.
Notch 33 of the positioning piece attached to the tip of
a, 34a, and when the pressure on the presser foot lifting pedal (not shown) is released, the rotating arm is moved through the toggle mechanism described above by the action of the wire 25. 9 is lowered. At this time, the concave portion of the leaf spring expandably attached to the positioning lever 32, which had already been manually lowered to the lowered position, is the protruding portion of the screws 28, 29 that are lowered together with the rotating arm 9. At the same time, the presser foot 15 attached to the tip of the rotating arm 9 cooperates with the feed plate 5 disposed below the presser foot 15 to press the fabric W and the marker piece P. (See FIGS. 2 and 3) When the presser foot lifting pedal (not shown) is pressed again after sewing, the positioning lever 32 moves the rotary arm 9, the positioning It is raised together with the lever support member, etc.

In this embodiment, the positioning lever 32 is lowered manually when positioning the sign piece, but if necessary, other driving means such as air or a solenoid may be used to lower the positioning lever 32. Needless to say, it's a good thing.

As described in detail above, the present invention has the positioning member for positioning the marker piece at a predetermined position on the fabric disposed near the presser foot so as to be movable in the vertical direction, and only the positioning member is moved when the presser foot is raised. Since it can be lowered, the positioning work of the marker piece can be easily done, and the marker piece can be positioned accurately.

[Brief explanation of the drawing]

FIG. 1 is a side view of the apparatus during positioning work, FIG. 2 is a front view showing the main parts of the apparatus during operation, and FIG. 3 is a plan view showing the main parts of the apparatus during operation. In the figure, 1 is a sewing machine table, 3 is a sewing machine needle, 4 is a moving plate, 5 is a feed plate, 9 is a rotating arm, 1
5 is a presser foot, 17 is a presser crank, 18 is a fixed arm, 21 is a rotating lever, 24 is a two-arm lever, 2
6 is a positioning lever support member, 32 is a positioning lever, 35 and 36 are leaf springs, and 37 is a positioning lever lowering pin.

Claims (1)

[Claims for Utility Model Registration] It has a feed plate 5 and a presser arm 9 which is rotatable around a horizontal axis and has a presser foot 15 at its tip, the feed plate 5 and the presser foot. In a sewing machine in which a label piece P such as a name, label, etc. is held between the leg 15 and the fabric W and the label piece P is sewn onto the fabric W, the presser arm 9 moves relative to the presser arm 9 in the vertical direction. A positioning member 32 that is attached below the presser arm 9 and has positioning pieces 33 and 34 for positioning the marker piece P at a predetermined position on the fabric.
and an elastic member that is fixed to one of the positioning member 32 and the presser arm 9, and operatively engages with the other 9 to hold the positioning member 32 immovably relative to the presser arm 9. 35,
36, in the raised position of the presser arm 9, only the positioning member 32 can be moved downward by releasing the engagement state against the holding action of the elastic members 35 and 36; When arm 9 is lowered,
The elastic members 35 and 36 are engaged with the other 9 of the positioning member 32 and the presser arm 9, so that the presser arm 9 and the positioning member 32 can be raised together. Cloth holding device for sewing machine.