JPS60256491A - Cloth presser of sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a presser foot device for a sewing machine that is moved in the horizontal direction according to preprogrammed data.

[Prior art]

An automatic sewing machine equipped with a presser foot device that can move the workpiece to be sewn on a trajectory in a predetermined horizontal plane relative to the sewing position of the sewing machine, that is, the needle position, and automatically perform sewing according to a predetermined pattern. It is well known.

[Summary of the invention]

The present invention is directed to a presser foot device in the automatic sewing machine, and particularly to a presser foot device that enables sewing according to a sewing pattern that extends beyond the sewing area of the presser foot device.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

I will clarify. In Fig. 1, 1 is the main body of the sewing machine, 2 is the table, 3 is the needle, 4 is the outer presser foot placed at the sewing position on the table 2, and 5 is the outer presser foot 4 according to the data programmed in advance on the table 2. Therefore, numeral 6 is a drive section of the sewing machine main body 1, and 7 is a control section that controls presser foot drive section 5 and drive section 6, which moves the presser foot in the horizontal direction.

2 and 3 show in detail a cloth presser device 8 according to the present invention, and this cloth presser device 8 includes a movable base portion 9, a slide base portion 10, and a manual connection means 11. The movable base 9 is moved in synchronization with the external presser foot 4 and is made up of a base plate 12 attached to the presser drive unit 5, and a bearing 13 fixed to the tip of the base plate 12. The slide base 10 is attached to the movable base 9 so as to be movable in the left and right direction, and the bearing 1
3, and a frame J fixed to both ends of this shaft 14 and placed horizontally in front of the movable base 9.
, 15. Reference numeral 16 indicates attachment alignment means for removably attaching a presser foot cassette 19 to the slide base 10, which will be described later.
7 and an alignment hole 18 provided correspondingly. The presser foot 9 and the foot cassette 19 are set with an extended sewing area B that is wider in the left-right direction than the sewing area A (see Fig. 4) set in the sewing machine main body 1, and is a bridge plate having the alignment hole 18 at one end. 20, a plate-shaped lower cloth presser 22 whose rear ends are attached to the other end of the bridge plate 20 so that the horizontal mounting position can be finely adjusted via adjustment screws 21; A plate-shaped inner fabric presser 24 whose rear end is fixed via a hinge 23 to the inner fabric presser 24 is positioned above the inner fabric presser 24 and whose rear end is fixed to the lower fabric presser 22 via a hinge 25. and a plate-shaped upper presser foot 26 fixed separately. On the upper surface of the lower presser foot 22, there is a positioning recess 27 for accommodating an object to be sewn, such as a body part X (see Fig. 5), which is placed on the lower side during sewing. The object to be sewn, that is, part Y (see Figure 5)
A needle escape hole 28 is provided which is hollowed out to be slightly smaller than the needle escape hole 28. A positioning hole 29 for accommodating the part Y is formed in the middle presser foot 24. The upper presser foot 26 has a stitch Z(
A needle escape hole 30 is provided which is hollowed out to be smaller than the above part Y so as not to interfere with the needle escape hole 30 (see FIG. 5). The expanded sewing area B is defined by these needle escape holes 28 and 30. The manual connection means 11 is connected to the movable base 9
The handle is screwed into the upper part of the bearing 13, and when one side of the handle is rotated (forward rotation), the tip of the threaded portion 31 is pressed against a part of the outer peripheral surface of the shaft 14 of the slide base 10. The slide base 10 is fixed to the movable base 9 by rotating the other handle (reversely) to loosen the pressure on the tip of the threaded portion 11 against the shaft 14 and release the fixation.

In the structure of the above embodiment, when sewing, first set the body part
6 and the inner cloth presser foot 24 are opened, and after storing and placing the body part X in the positioning recess 27 of the lower cloth presser foot 22, open the inner cloth presser foot 2.
4 is closed, the part Y is stored in the positioning recess 29 and placed on the body X, and then the upper presser foot 26 is closed.

As a result, the body X and the part Y are attached to the presser foot cassette 19.
It is inserted and set. Next, this presser foot cassette 19 is connected to the slide base 10 via the attachment and alignment means 16, and the slide base 10 is moved to one side, for example, to the left, and the manual connection means 11 is rotated in the forward direction to connect the moving board. 9, the outer presser foot 4 is closed, and the cloth presser cassette 19 is pressed between the outer presser foot 4 and the throat plate (not shown) of the table 2. In this state, by driving the sewing machine body 1 by the drive unit 6, the presser foot drive 5 is moved in the horizontal direction according to the data programmed in the control unit 7 in advance, and the presser foot 4 and the moving base 9 are moved in the horizontal direction. is moved horizontally, and the presser foot cassette 19 is also moved horizontally via the slide base 10 that is synchronized with the moving base 9, and the sewing machine is moved by the needle 3 and the sewing drive by the hook mechanism and the feed drive by the feed mechanism (not shown). Sewing is performed within the set sewing area A of the main body 1. In this way, the right half of body X and part Y is sewn, that is, the sewing area A of the sewing machine body 1 is
After completing the inner sewing, open the outer presser foot 4, operate the manual coupling means 11 in reverse to move the slide base 10 to the right by hand, and operate the manual coupling means 11 in reverse to move the slide base 1
0 is fixed to the movable base 9, the outer presser foot 4 is closed, and the sewing machine body 1 is driven in the same manner as described above to sew the left half of the body X and the part Y. When the sewing is completed in this way, open the outer presser foot 4, remove the presser foot cassette 19 from the slide base 10, insert the presser foot cassette with another body part position and perform the next sewing. Although the mounting alignment means 16 is exemplified as having a protrusion 17 and an alignment hole 18, it may also be configured by a concave-convex stop, magnetic engagement, or the like.

C. Effects of the invention] As described above, according to the invention, the presser foot force center, which has an extended sewing area that extends left and right from the set sewing area of the sewing machine, is removably attached to the slide base, and the right and left halves of the presser foot By alternately sewing the parts, it is possible to easily and quickly perform sewing beyond the set sewing area of the sewing machine → sewing according to the pattern.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a perspective view showing essential parts of the invention, and FIG.
4 is a schematic diagram of the set sewing area of the sewing machine and the expanded sewing area of the presser foot cassette, and FIG. 5 is a perspective view of the body and parts. DESCRIPTION OF SYMBOLS 1... Sewing machine main body, 4... External presser foot, 5... Presser foot drive unit, 8... Cloth presser device, 9... Moving base, 10...
...Slide base, 11...Manual connection means, 19...
- Fabric presser cassette, 22...Lower fabric presser, 24...Middle fabric presser, 26...Upper fabric presser, A...Setting sewing area, B...Extended sewing area. Representatives Masu Oiwa, Yuku and 2 others) Shibaj] 8 Figure 3 Figure 4 Hiichi Figure 5 Hi

Claims (1)

[Claims] In a device comprising a presser foot disposed at a sewing position of a sewing machine, and a presser foot drive section that moves the presser foot into a set sewing area of the sewing machine according to preprogrammed data, the presser foot is connected to the presser foot drive section. a movable base that is synchronized with the sewing machine, and a cloth that is attached to the movable base so as to be movable in the left-right direction, and that can hold and set the workpiece to be sewn, and has an extended sewing area that is wider in the left-right direction than the set sewing area of the sewing machine. A slide base to which a presser foot cassette is removably attached via a mounting alignment means, and a slide base for fixing the slide base to the movable base during sewing operation within a setting area of the sewing machine, and for fixing the fixing to the setting area of the sewing machine. A presser foot device for a sewing machine, characterized in that it is equipped with a manual connection means that is released after sewing is completed.