JPH0637829Y2 - Variable presser foot device for sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a variable cloth presser device for a sewing machine, which is capable of pressing a material to be sewn smaller than the sewing range of the cloth presser.

[Prior Art] For example, a bartacking sewing machine is configured as shown in FIG. In FIG. 5, the sewing machine head 2 is mounted on the table 1, and the needle 4 is mounted on the needle bar 3 provided at the bottom of the head 2. In addition, the cloth support 5 is placed on the table 1.
Is provided, a cloth presser 6 is provided on the cloth support 5, and the cloth support 5 and the cloth presser 6 are moved in the XY direction by the XY moving mechanism 7.

[Problems to be solved by the invention] However, in the sewing machine configured as described above,
If the material to be sewn is larger than the sewing range 6'of the work clamp 6,
The cloth to be sewn can be placed on the cloth support 5 and pressed by the cloth presser 6. However, when the cloth to be sewn is smaller than the sewing range 6'of the cloth presser 6, the cloth to be sewn is thin according to the pattern of the cloth to be sewn. Since the plate-shaped auxiliary presser is placed on the cloth to be sewn and the auxiliary presser foot is pressed by the presser foot 6 to press the cloth to be sewn, if the pattern of the cloth to be sewn is different, the auxiliary to match the pattern The presser foot had to be changed each time, and the workability was poor. Further, the cost of the auxiliary presser is high, and when the pattern of the cloth to be sewn changes, the auxiliary presser corresponding to the pattern is required, and there is a problem that a large number of different auxiliary pressers must be provided.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing machine variable cloth presser device capable of forming a desired pattern by projecting a cloth presser pawl in a sewing range of the cloth presser.

[Means for Solving the Problem] In order to achieve the above object, in the variable presser foot device of the sewing machine of the present invention, in the sewing machine having the presser foot having a predetermined sewing range, the lower surface of the cloth presser is preliminarily set. A guide groove is provided at a predetermined interval, a slide groove is provided on the upper surface of the presser foot corresponding to the guide groove, and a cloth presser pawl main body is slidably provided in the guide groove. The cloth pressing claw at the tip of the main body is bent downward to protrude into the sewing range of the cloth pressing, and the knob is fixed to the upper part of the cloth pressing claw main body through the slide groove, and the knob and the cloth pressing claw main body A spring is interposed between the two.

[Operation] According to the present invention, when the knob provided around the cloth presser is pushed and moved along the slide groove, the cloth pressing claw main body fixed to the knob is moved along the guide groove, whereby the cloth presser is moved. The position of the cloth presser claw provided at the tip of the presser foot main body can be changed arbitrarily, and an arbitrary sewing pattern that matches the pattern of the material to be sewn can be formed in the sewing range of the presser foot by the position of the presser foot. can do.

[Embodiment] Referring to FIGS. 1 to 4, in a variable presser foot device for a sewing machine according to an embodiment of the present invention, a cloth presser foot 8 has a plurality of slide grooves 9 formed on the upper surface thereof. On the bottom,
Guide grooves 10 are formed respectively corresponding to the slide grooves 9, and these slide grooves 9 are formed in an oval shape in the direction of the sewing range 8 ′ of the presser foot 8 and the guide grooves 10 are formed in the sewing range 8 of the presser foot 8. The slide groove 9 and the guide groove 10 communicate with each other through a long hole 18, and a thin non-slip groove 11 is formed laterally on the bottom surface of the guide groove 10. ing. Further, a cloth presser pawl support 12 is provided on the lower side of the presser foot 8 on the side of the sewing area 8 ', and the width thereof is substantially the same as that of the groove 19 formed on the upper surface of the cloth presser pawl support 12 and the guide groove 10. The presser foot claw main body 13 is slidably fitted, and one end of the presser foot claw main body 13 is bent downward substantially at a right angle to form a presser foot claw 13 '. 'Is protruding. The length of the presser foot pawl 13 'is substantially equal to the height of the presser foot pawl support 12, and a thin groove is vertically and horizontally formed in the lower surface of the presser foot pawl support 12 to increase the holding force of the cloth. . Further, the knob 15 is fixed to the portion of the main body 13 of the presser foot near the end on the opposite side of the presser foot 13 'by the screw 14,
A spring 16 is interposed between the knob 15 and the upper surface of the slide groove 9, and a spring 17 is provided between the presser foot 8 and the presser foot claw main body 13. Although not shown in the drawings, the guide groove 10 is formed with an anti-slip groove 11 in the guide groove 10 in a direction perpendicular to the moving direction of the cloth pressing pawl body to prevent the cloth pressing pawl body from slipping. The springs 16 and 17 and the anti-slip groove are configured so that the cloth pressing claw main body 13 is not displaced by vibration.

In the variable cloth pressing device of the sewing machine of the present embodiment configured as described above, when the knob 15 is pushed downward against the spring 16, the engagement of the anti-slip groove is disengaged, and the cloth pressing claw main body 13 is easily moved. Therefore, the position of the presser foot 13 'can be arbitrarily set.

Therefore, as shown in FIG. 4, when the pattern 15 of the cloth to be pressed by the presser foot 8 is moved as indicated by the dotted line, it is moved as shown by the dotted line of the presser foot 13 'of the body 13 of the presser foot. Since the pattern of the cloth to be sewn can be arbitrarily formed by the cloth pressing claw 13 ', the cloth to be sewn having an arbitrary pattern can be easily pressed by the cloth presser 8.

[Effects of the Invention] Since the present invention is configured as described above, the knob of the presser foot is moved to move the presser foot pawl body appropriately, and the cloth presser pawl at the tip of the presser foot pawl body is used for sewing. By forming a pattern according to, it is possible to easily press and sew a cloth to be sewn in an arbitrary pattern.

[Brief description of drawings]

1 is a front view of a variable presser foot device for a sewing machine according to an embodiment of the present invention, FIG. 2 is a bottom view of the variable presser foot device for a sewing machine of FIG. 1, and FIG. FIG. 4 is a side sectional view of the work clamp device, FIG. 4 is a partially enlarged side view of FIG. 3, and FIG. 5 is a perspective view of a bartacking sewing machine. 8 …… Cloth retainer, 9 …… Slide groove, 10 …… Guide groove, 11 …… Skid groove, 12 …… Cloth retainer claw support, 13 …… Cloth retainer main body, 14 …… Screw, 15 ……
Pick, 16, 17 ... Spring.

Claims (1)

[Scope of utility model registration request] 1. A sewing machine having a presser foot (8) having a predetermined sewing range, wherein a plurality of guide grooves (10) are provided in the presser foot at predetermined intervals to correspond to the guide grooves. Then, a slide groove (9) is provided on the upper surface of the cloth retainer, and a cloth pressing claw body (13) is slidably provided in each of the guide grooves.
3 ') is bent downward to project into the sewing range of the presser foot, and the knob (15) is fixed to the upper part of the presser foot pawl body through the slide groove, and the knob and the presser foot pawl body A variable presser foot device for a sewing machine with a spring (16) interposed between them.