JPH01299582A - Over-lock machine - Google Patents

Abstract

PURPOSE:To concentrically carry out the adjusting operation of each adjusting device in one place and grasp the adjustment setting conditions at a glance by mutually closely providing the operating members of a stitching width adjusting device, a differential movement adjusting device for the feeding quantities of front and rear feeding teeth, a seem pitch adjusting device, etc., in the front of the bed portion of a sewing machine body. CONSTITUTION:The operating members 12, 13, 14 of a stitching width adjusting device for adjusting a stitching width, a differential movement adjusting device for adjusting the feeding quantities of front and rear feeding teeth 4, 5 and a seem pitch adjusting device for adjusting a seem pitch respectively are mutually closely provided on the operating portion 11 in the front of the bed portion 3 of a sewing machine body. Therefore, the changing adjustment of these adjusting devices can be easily carried out in one place of the operating portion 11 by opening a cover 15. Also, in order to confirm the adjusting condition of each adjusting device at the time of the changing adjustment or operating the sewing machine, the confirmation can be easily carried out at a glance merely by opening the cover 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an overlock sewing machine, and more particularly to an arrangement of operating members for a plurality of devices.

[Prior art] Conventional overlock sewing machines have an overlock width adjustment device for adjusting the overlock width, a differential adjustment device for adjusting the feed amount of the front and rear feed dogs, and a stitch pitch adjustment device. Operating members for a plurality of devices, such as a stitch pitch adjustment device for sewing machines, are distributed and arranged inside the bed section of the main body of the sewing machine, which can be opened and closed, and on the outside of the arm section.

[Problems to be Solved by the Invention] Therefore, in the second conventional overlock sewing machine, it is not possible to concentrate the adjustment operation of each adjustment device using a plurality of operation members in one place, and the operation is extremely difficult. This method is troublesome, and there are problems in that it is not possible to grasp at a glance the adjustment setting state of each adjustment device using the operating member.

This invention has been made by focusing on the problems existing in the prior art, and its purpose is to centralize the adjustment operations of each adjustment device using a plurality of operation members in one place. It is an object of the present invention to provide an overlock sewing machine which can be easily operated and the adjustment setting state of each adjustment device by an operating member can be easily grasped at a glance.

[Means for Solving the Problems] In order to achieve the above object, the overlock sewing machine of the present invention is provided with an overlock width adjustment device for adjusting the overlock width and a front and rear feeder on the front surface of the bed portion of the sewing machine body. The operation members of a plurality of devices, such as a differential adjustment device for adjusting the amount of tooth feed, a stitch pitch adjustment device for adjusting the stitch pitch, are arranged close to each other.

[Function] In the overlock sewing machine configured as described above, each adjustment device can be easily changed and adjusted by operating a plurality of operating members arranged close to each other on the front surface of the sewing machine bed. Furthermore, the adjustment status of each adjustment device can be grasped at a glance when changing or adjusting the sewing machine or when operating the sewing machine.

[Example 1] Hereinafter, an example of an overlock sewing machine embodying the present invention will be described in detail based on the drawings.

As shown in FIGS. 1 and 2, a sewing machine main body 1 is composed of an arm portion 2 and a bed portion 3. As shown in FIGS.

Front and rear feed dogs 4.5 are provided in the bed section 3, and work together with a presser foot 7 at the lower end of a presser bar 6 provided on the arm section 2 to transport the work cloth in the cloth feed direction. The needle bar 8 is provided on the arm portion 2, and an overlock stitch is formed on the edge of the work cloth by the cooperation of the sewing needle 9 attached to the lower end of the needle bar 8 and a looper (not shown) provided in the bed portion 3. .

The upper knife 10 is operably provided on the bed portion 3, and works in cooperation with a fixed lower knife (not shown) to cut the edge of the work cloth prior to forming an overseam.

The operating section 11 is provided on the front surface of the bed section 3 of the sewing machine main body 1, and the operating section 11 has first to third operating members 12.
．． 13, 1.4 are arranged close to each other, and a cover 15 is attached to the front portion of the cover 15 so that the lower end thereof can be rotated to open and close. A dial-type first operating member 12 is rotatably attached to the operating section 11, and has a scale 21 on its outer periphery. When the first operating member 12 is rotated in order to align an arbitrary scale 21 with an instruction mark 22 attached to the front surface of the bed portion 3, a well-known stitching width adjustment device (not shown) is activated, and the The knife 10 and the like are moved in a direction perpendicular to the cloth feeding direction, and the overcasting width is adjusted according to the scale.

As shown in FIGS. 3 and 4, the mounting plate 16 is provided within the operating portion 11, and a pair of support rods 17 and 18 extending in the vertical direction are installed on the inner surface of the mounting plate 16. The second operation member 13 of the slide knob type is supported by one support rod 17 so as to be movable up and down, and an instruction mark 24 for indicating a scale 23 attached to the front surface of the bed section 3 is provided on the front surface of the second operation member 13. ing. In order to align the instruction mark 24 with an arbitrary scale 23, this second operating member 13 is
When 4.
The feed amount of 5 is adjusted respectively, and the differential feed according to the scale 23 is set. The third operating member 14 of the slide knob type is supported by the other support rod 18 so as to be movable up and down, and has an instruction mark 26 on its front surface for indicating a scale 25 attached to the front surface of the bed section 3. There is. Then, in order to align the instruction mark 26 with an arbitrary scale 25,
When the third operating member 14 is moved, a known stitch pitch adjustment device (not shown) is operated via the rotary lever 20 or the like, and the pitch of the stitches formed by the sewing needle 9 or the like is adjusted.

As mentioned above, in the overlock sewing machine of this embodiment, the operation section 11 on the front surface of the bed section 3 of the sewing machine main body 1 has the following functions:
Each operating member 12 includes a stitching width adjusting device for adjusting stitching width, a differential adjusting device for adjusting the feed amount of the front and rear feed dogs 4 and 5, and a stitching pitch adjusting device for adjusting stitching pitch. .13 and 14 are arranged in close proximity to each other, changes to these adjustment devices can be easily made at one location on the operating part 11 by opening the cover 15. Furthermore, if it is desired to check the adjustment status of each adjusting device during this change adjustment or when operating the sewing machine, this can be easily done at a glance by simply opening the cover 15.

[Effects of the Invention] Since this invention is configured as explained above,
Adjustment operations for each adjustment device using multiple operation members can be easily performed in one place on the front of the bed of the sewing machine, and the adjustment setting status of each adjustment device using the operation members can be easily grasped at a glance. It has the excellent effect of being able to

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of an overlock sewing machine embodying the present invention, and FIG. 2 is a side view of the sewing machine.
FIG. 3 is a partial plan view showing a support structure for the second and third operating members, and FIG. 4 is a side view of the same structure. DESCRIPTION OF SYMBOLS 1... Sewing machine main body, 3... Bed part, 4... Front feed dog, 5... Rear feed dog, 11... Operation part, 12...
- A first operating member for adjusting the stitching width; 13... a second operating member for adjusting the feed amount of the front and rear feed dogs; 14... a third operating member for adjusting the stitch pitch; operating members. Patent applicant Brother Industries, Ltd. Mizunami Seiki Co., Ltd.

Claims (1)

[Claims] 1. On the front of the bed section (3) of the sewing machine body (1), there is a stitch width adjustment device for adjusting stitch width, a differential control device for adjusting the feed amount of the front and rear feed dogs, and a stitch pitch adjustment device. An overlock sewing machine characterized in that operating members (12, 13, 14) of a plurality of devices, such as a stitch pitch adjusting device for adjusting stitch pitch, are arranged close to each other.