JPS60253488A - Cloth pressure 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 a presser foot device for a sewing machine that is moved in the horizontal direction according to preprogrammed data.

[Prior art]

A presser foot device that can automatically perform sewing according to a predetermined pattern by moving the workpiece in a predetermined horizontal plane relative to the sewing position of the sewing machine mechanism, that is, the needle position, is well known. .

[Summary of the invention]

This invention facilitates setting of the workpiece by horizontally rotating a presser cassette that holds the workpiece therebetween.

[Embodiments of the invention]

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

In FIGS. 1 to 3, the automatic sewing machine to which this presser foot device is attached has a sewing machine mechanism section 2 that has a built-in mechanism for forming stitches on the upper surface of a sewing machine table 1, and a presser plate section 3 that will be described later. 4 and the slide plate 5, and a presser drive unit 7 that moves the presser foot device 6 two-dimensionally on the slide plate 5 according to a predetermined pattern. A control unit 8 that controls the operations of each of the above-mentioned parts is provided on the sleeve of the sewing machine table 1. It is designed to control the movement of the drive unit 7, etc. The presser foot device 6 has a T-shaped movable base 10 fixed to the output end of the presser foot drive unit 7.
The presser plate 3 is rotatably mounted in the horizontal direction via a support shaft 11 to one part of the movement block 10. This cloth presser plate part 3 includes a rectangular upper presser plate 12, an inner cloth presser 14 attached to the rear side of the upper cloth presser 12 via a hinge 13, and a separate inner cloth presser 14 attached to the upper cloth presser 12. It consists of an upper presser foot 16 attached to the rear side via a hinge 15.

A bearing 17 is protruded from the rear side of the upper presser foot 12 and is rotatably fitted to the support shaft 11, and a set screw 18 is attached to the top surface of the support shaft 170. For example, a crank 19 is protruded from the bearing 17, and the operating U-rad end of an air cylinder 20 whose cylinder tube is rotatably fixed to the base 10 is rotatably connected to the free end of the crank 19. It is. Further, a hook 22 is provided on the free end of the upper presser foot 12 to engage with a locking pin 21 protruding from the other side of the base 10. Stopper mechanism 23 that acts when engaging and disengaging from the pin 21
is the provision. This stopper mechanism 23 includes a casing 24 fixed to a hook 22, a stopper pin 25 that is movably attached to the casing 24 and has its tip facing the hook 22, and a spring 26 that biases the stopper pin 25 in the projecting direction. Consisting of

In the above configuration, in order to set the material to be sewn on the presser plate 3, first, the actuation iron of the air cylinder 20 is retracted, so that the presser plate 3 is moved around the spindle 11 into the sewing machine mechanism. Rotate sideways from the 20th stitch position.

Next, open the upper fabric presser plate 16 and the inner fabric presser 14, position and place one of the objects to be sewn on the upper fabric presser 12, and then press the inner fabric presser 1.
4 is closed, another workpiece is positioned and placed thereon, and the upper presser foot 16 is closed. Then the air cylinder 2
By extending and operating the operating rond of 0, the hook 2
2 is engaged with the locking pin 21. Then, the presser foot driving section 7 is turned on to press and clamp the presser foot plate section 3 between the outer presser foot 4 and the sliding plate 5, and the control section 8 is started, whereby the sewing machine mechanism is controlled by the control section 8. 2 and the synchronized horizontal movement of the presser foot 4 and the presser plate 3 according to pre-programmed data, stitches are formed on the workpiece in a predetermined pattern, and the presser foot 4 is pressed. is released and the sewing operation ends.

Thereafter, the actuating rod of the air cylinder 20 is retracted again, and the presser foot plate 3 is rotated to the side of the needle position, and the upper presser foot 16. After opening the inner presser foot 14 and taking out the finished sewing item, and placing the next item to be sewn in the same manner as above, the air cylinder 2
0 is activated to extend, the presser plate portion 3 is pressed and held between the outer presser foot 4 and the slide plate 5, the control portion 8 is started, and sewing is sequentially repeated. Since the stopper mechanism 23 is activated when the hook 22 and the locking pin 21 are engaged, even if some problem occurs in the air cylinder 20, such as air leakage, the presser plate portion 3 and the base 10
It will never come out of engagement with the

In the above embodiment, the rotation of the presser plate 30 is driven, but the same effect can be obtained even if the rotation is performed manually without using a driving force.

Further, a hook 22 is provided on the base 10, and a locking pin 21 is provided on the base 10.
It is also possible to provide this on the presser plate portion 3.

〔Effect of the invention〕

As described above, according to the present invention, since the presser plate part is rotatably arranged to the side of the needle position and the workpiece can be set and taken out, the needle and the The presser foot does not get in the way, making the work extremely easy and improving the efficiency of the sewing work.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view of the same cloth presser device, and FIG. 3 is a plan view of the same cloth presser device.・ 2... Sewing machine mechanism section, 3... Fabric presser plate section, 4...
External presser foot, 7...presser foot drive unit. Agent Masuo Oiwa (2 idiots)

Claims (1)

[Claims] A sewing machine mechanism comprising a sewing machine mechanism section that forms stitches, an outer presser foot disposed at a sewing position of the sewing machine mechanism section, and a presser foot drive section that moves the outer presser foot in a horizontal direction according to preprogrammed data, A workpiece to be sewn is sandwiched between a movable base fixed to the output end of the presser foot drive unit and an upper and lower presser foot that are assembled so as to be openable and closable, and a spindle is attached to one side of the movable base. A presser foot device for a sewing machine comprising a presser plate portion rotatably attached in the horizontal direction via a presser plate portion.