JPH0319799B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cloth setting device for holding a cloth in a proper position relative to a fastener in a special sewing machine for sewing a fastener on a skirt or the like.

[Conventional technology]

Sewing a fastener is one of the most difficult tasks, as it is necessary to maintain the positional relationship between the fabric and the fastener with high precision. Especially when sewing a fastener from the torso to the waist of a skirt, the fastener sewing part has a curved bias shape, so it is very difficult to sew while holding the fabric by hand. , workers needed to be highly skilled.

Therefore, currently, a fabric setting device as shown in FIGS. 10 and 11 is used for sewing fasteners onto skirts and the like.

This device attaches a fastener F and a fastener sewn portion C which is separately formed on a cloth C1 on a cloth setting table 1.
1a and C1b, and a cassette 3 that holds both the positioned works C1 and F.

The positioning mechanism 2 includes cylinders 4 and 5 as driving means driven by foot pedals P1 and P2.
and first and second presser plates 7, 8 which are rotated about a shaft 6 by the cylinders 4, 5.

Further, the cassette 3 consists of an upper frame 3a and a lower frame 3b which are connected to each other so as to be openable and closable.
The opening 3b1 is adapted to removably fit into a convex fastener mounting portion 1a provided on the setting table 1.

When sewing the fastener to the outer material of the skirt,
To set both works C1 and F, first fit the cassette 3 into the setting table 1, and then press the upper frame 3.
Open a. Then, the lining C2 of the skirt to which the fastener F has been sewn in advance is placed on the cassette lower frame 3b, the fastener F is fitted into the fastener placement part 1a and positioned, and the skirt outer material C1 is attached to the lining C2. Place the fastener sewing parts C1a and C1b on the setting table 1. Thereafter, the operator depresses one pedal P1 to actuate the cylinder 4 and press the first presser plate 7.
Rotate downward. Then, the first presser plate 7
One fastener sewing part C1 is attached to the lower inner edge 7a of the
a to position the two fasteners, and then press the other pedal P2 to actuate the cylinder 5 to rotate the second presser plate 8 downward, and then position the one fastener seam C1a. It is fixed on the setting table 1 via the fastener F.

Here, one pedal P1 is depressed again, the cylinder 4 is turned OFF, the first press plate 7 is raised, and the edge of the other fastener sewing part C1b is attached to the lower inner edge 8a of the second press plate 8. , press the pedal P1 again to lower the first presser plate 7, and press the other fastener sewing part C.
1a is also pressed and fixed. After this, the upper frame 3a of the cassette 3 is rotated downward and the fastener sewing part C1 is removed.
The outer periphery of a and C1b is held between the lower frame 3b,
This state is maintained by the locking members 3C, 3C. Thereafter, the operator depresses the pedals P1 and P2, raises both the cloth presser plates 7 and 8, and takes out the cassette 3 together with the cloth C and the fastener F.
It is set in the sewing section of the sewing machine, and the fabric C and fastener F are sewn while being held in the cassette 3.

In this way, in the above-mentioned cloth setting device,
By bringing both the fastener sewing parts C1a and C1b into contact with the lower inner edges of the lowered first and second press plates 7 and 8, proper positioning with respect to the fastener F can be performed. This made it possible to achieve extremely high work efficiency and productivity compared to the previous positioning methods that were performed by visual inspection or measuring dimensions.

[Problem that the invention seeks to solve]

However, the conventional device described above has a problem in that it requires a lot of time and effort to change the way the fastener F is attached. That is, the method of attaching the fastener F varies depending on the type of flap Cf to be formed on the fabric C1, as shown in FIGS. However, in the conventional device described above, the work presser plates 7, 8 are fixed because the shaft 6, cylinders 4, 5, supports 7, 8, etc. are firmly connected to each other. In order to replace the above-mentioned parts, it is necessary to disassemble and assemble each member, which requires a great deal of time and effort, and requires the use of a large number of gauges and tools. This invention has been made by focusing on the above-mentioned problems, and it is possible to accurately and easily position the cloth and the fastener, and also to quickly and easily respond to changes in the fastener sewing form. The purpose of the present invention is to provide a fabric setting device for a fastener sewing machine.

[Means for solving problems]

The present invention provides a cloth presser unit which rotatably holds a pair of cloth presser members corresponding to the type of sewing of a fastener on cloth, and a cloth presser unit which is mounted on a setting table with both cloth presser members mounted on a setting table. A holding part for holding the supported cassette in a position where it can be lowered into the lower frame, and a driving means for individually driving both of the presser members, and the holding member is removably fitted to the presser unit. and a fastening member that fixes the fitted presser foot unit, and a driving means for individually driving both the presser foot members, which is configured to have a fitting member that is connected to the presser foot unit and a fastening member that fixes the fitted presser foot unit. It is provided with an engaging portion that can be engaged and disengaged.

[Effect]

In this invention, the positioning of the fastener and the cloth when setting the cloth can be easily performed by bringing the edge of the fastener sewn part of the cloth into contact with the lower inner edge of the cloth presser member, and the fastener against the cloth can be easily positioned. When changing the sewing form, release the fastening member, take out the presser foot unit from the fitting part of the holding member, and fit another presser foot unit according to the sewing form into the fitting part. After that, it is only necessary to perform the extremely simple operation of fixing with a fastening member.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 9.
This will be explained based on the diagram. Note that the same or equivalent parts as in the conventional example are given the same reference numerals, and detailed explanation thereof will be omitted.

In the figure, reference numeral 10 denotes a column erected on the side of the setting table 1, and 11 denotes a rod-shaped arm held above the setting table 1 via a connecting member 10a to the column 10. One end of this arm 11 A fitting portion 11a is formed in which a presser foot unit, which will be described later, fits. Further, a female threaded portion 11a1 is formed at the distal end portion of this fitting portion 11a. 12 is a ring fitted and fixed to the arm body 11 with a screw 12a;
Reference numeral 3 denotes a holding plate fixed to one end surface of this ring 12 with a screw 13b, and the fitting part 11a of the arm body 11 protrudes from the insertion hole 13a of the holding plate.
1 to 13 constitute a holding member 14.

A cylinder bracket 15 is fixed to the side surface of the arm body 11 with a screw 16, and two air cylinders 18 and 19 are rotatably connected to the front part thereof by a support shaft 17. Furthermore, the cylinder rods 18a, 19a of both air cylinders 18, 19 are provided with cylinder knuckles 20, 20 as engaging portions at their respective distal ends. This cylinder knuckle 20 has a structure as shown in FIG.
That is, this cylinder knuckle 20 includes a knuckle body 21 having a bifurcated shape, a knuckle shaft 22 inserted through both side walls 21a and 21b of this knuckle body 21, and a pusher screwed and fixed to the tip of this knuckle shaft 22. Button 23 and this push button 23
and a spring 24 interposed between the knuckle shaft 22 and the knuckle shaft 22. Further, a locking step portion 22a is formed on the knuckle shaft 22, and this locking step portion 22a
Due to the elastic force of the spring 24, it is always in contact with one side wall 21b of the knuckle body 21. The cylinder knuckle 20 is constituted by the above 21 to 24.

Reference numeral 25 denotes a mounting plate fixed to the side surface of the cylinder bracket 15 with screws 26, and an opening/closing plate 28 rotatably connected to one end of the mounting plate by a shaft 27.
is provided. Reference numeral 29 denotes a fastening member rotatably attached to one end of the opening/closing plate 28 with a washer 30 and a locking ring 31, and a female threaded portion 2 screwed into the female threaded portion 11a1 of the fitting portion 11a.
9a and a disk-shaped knob 29b for rotating the male threaded portion 29a.

Reference numeral 31 denotes a presser foot unit which is removably fitted into the fitting portion 11a of the arm body 11. As shown in FIG.
The presser member 33) is rotatably inserted into the cylindrical shaft 35, and both presser members 32, 33
and three metal parts 3 screwed to the shaft 35.
6, 37, and 38, and a fitting portion 11a of the arm body 11 is located within one end of the shaft 35.
are designed to fit together. Further, positioning members 32a, 33 each having a shape corresponding to one fastener sewing type are provided at the lower end portions of the presser members 32, 33.
a, and in addition, a locking step 22a of the knuckle shaft 22 of the cylinder knuckle 36 is provided at the upper end.
Notches 32b and 33b are formed to removably engage with each other (see FIGS. 5 and 7).

In addition, as the presser foot unit 31, the ninth
As shown in Figures a, b, and c, various types of fasteners are available that correspond to various types of fastener sewing.

The cassette 3 and other structures are the same as those of the conventional example.

Next, the effect will be explained.

When performing the setting operation, first, one of the many presser units 31 that is suitable for the required fastener sewing type is selected from among the many available presser units 31. Then, the shaft 3 of the selected presser foot unit 31
5 into the fitting part 11a of the arm body 11, and then close the opening/closing plate 28 and tighten the male screw part 29 of the fastening member 29.
a to one end of the shaft 35, rotate the knob 29b with your fingers to screw the male threaded portion 29a together, and then attach the presser foot unit 31 to the holding plate 13 and the knob 2.
9b. In all of the presser foot units 31, the attachment positions of the presser foot members 32, 33 are set in advance in consideration of the fixing position, so that the presser foot members 32, 33 can be attached without any positioning work after they are fixed. are positioned at appropriate positions with respect to the cassette 3 on the setting table 1 and the fastener F. Thereafter, the push button 23 of each cylinder knuckle 20 is pushed in against the spring 24 to form the locking step 22a as shown in FIG.
are separated from one side wall 21b, and in this state, the notches 32b, 33 of each of the presser members 32, 33 are opened.
b is the both side walls 21a and 21 of the knuckle main body 21.
b, and engage with the knuckle shaft 22. With the above steps, the work of mounting the presser foot unit 31 is completed.

Thereafter, as in the past, the two presser members 32 and 33 are raised and lowered by pedal operation, etc., and the positioning members 32a and 32a provided on both presser members 32 and 33 are
Fastener sewing parts C1a, C1b along 33a
Position and fix it, and hold it in the cassette 3.

Here, if it becomes necessary to change the sewing form of the fastener, remove the knuckle shaft 22 of the cylinder knuckle 20 from the notches 32b, 33b of the presser members 32, 33, contrary to the above-mentioned installation work. Then, rotate the knob 29b in the opposite direction to release the threaded connection between the male threaded part 29a and the fitting part 11a of the arm body 11, remove the presser foot unit 31 from the fitting part 11a, and replace the newly selected other presser foot. unit 3
1 as described above.

In the above embodiment, the fastening member 29 is composed of a knob 29b and a male threaded portion 29a,
Although the male threaded portion 29a is screwed into the female threaded portion 35a formed on the shaft 35 of the presser foot unit 31, it is possible to form a female threaded portion on the fastening member 29 and a male threaded portion on one end of the shaft 35. It is also possible to screw the female threaded portion into engagement with the male threaded portion by rotating the female threaded portion.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to accurately and easily position the fabric and the fastener using a pair of presser members, and when changing the fastener sewing mode, by attaching and detaching the presser unit, Since the pair of presser members can be replaced at the same time and no tools are required for attachment and detachment, the replacement work can be performed extremely quickly and easily, and productivity can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of an embodiment of the present invention, FIG. 2 is a perspective view of a main part of what is shown in FIG. 1, and FIG. 3 is a partially exploded perspective view of what is shown in FIG. Fig. 4 is a partially vertical side view of the fastening member shown in Fig. 2, Fig. 5 is an exploded perspective view of the cylinder nutcle shown in Fig. 3, and Figs. 6 and 7 are the same as Fig. 5. 8 is an exploded perspective view of the cloth presser unit shown in FIG. 2, FIG. 9 is a partially vertical side view showing the shape of the cloth presser member, and FIG. 10 is a conventional cloth setting device. FIG. 11 is a perspective view of the cloth shown in FIG. 9 in a state in which the cloth is set, and FIG. 12 is a front view showing how the fastener is sewn. 1...Set stand, 3...Cassette, 3a...Upper frame, 3b...Lower frame, 14...Holding member, 18,1
9... Air cylinder (driving means), 20... Cylinder nutcle (engaging portion), 29... Fastening member, 3
1... Cloth press unit, 32, 33... Cloth press member, C... Cloth, C1a, C1b... Fastener sewing part, F... Fastener.

Claims (1)

[Scope of Claims] 1. A cassette consisting of a lower frame and an upper frame that can be opened and closed relative to the lower frame, a setting base that removably supports the cassette, and a pair of cassettes that correspond to the type of sewing of the fastener to the fabric. a presser unit that rotatably holds the presser members of the presser unit; and a presser unit that holds the presser members of the presser unit such that they can be lowered into the lower frame supported on the setting table. a holding member; and a driving means for individually rotating both of the work presser members; and a fastening member for fixing the pressing unit, and the driving means includes an engaging portion that can be engaged with and detached from both of the cloth pressing members, and the fastener sewing portion is formed in sections on the cloth.
The edge of one of the fastener sewing parts pressed by one of the presser members is positioned along the lower inner edge of the lowered other presser member, and the A fabric setting device for a fastener sewing machine, characterized in that the periphery of the sewing part is pressed down by an upper frame and a lower frame of the cassette.