JPS63292993A - Guide apparatus for forming fold along edge of cloth - 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 (Field of Industrial Application) The present invention provides a method for automatically closing the folded part of a soft material by sewing it in order to form an orderly fold in the material before the step. INDUSTRIAL APPLICABILITY The present invention relates to a material guiding device disposed near the upstream side of a sewing section when viewed from the direction of material movement at the time of sewing.The present invention can be used in the field of tailoring clothing that includes folds along the edges of fabric. It is particularly suitable for manufacturing pants, shorts, etc. of training wear that has an elastic belt with an elastic band inserted in the fold along the edge of the fabric.

(Prior art) To create folds along the edges of soft materials such as textiles, an operator usually presses an amount equal to the width of the desired folded portion along the edge of the material by hand and feeds it into the sewing section. formed by Stable folds can be formed depending on the skill of the worker. However, when inserting an elastic band into the folded part of training wear, it is a tedious work.The shape that the worker is supposed to follow is hidden under the upper layer of the fabric and cannot be seen. You must constantly check the width of the folded part by touching the edges of the band and fabric with your hands.

(Problems to be Solved by the Invention) The purpose of the present invention is to solve the above-mentioned drawbacks, and to automatically close folded parts of soft materials by sewing to form neat folds in the material before the step. Our goal is to provide equipment for

(Means for Solving the Problem) The apparatus of the present invention is provided with the following configurations a and b near the upstream side of the sewing section when viewed from the direction of movement of the material at the time of sewing.

a. An actuated side guide mechanism consisting of two members, one of which is located inside the other when forming a fold;
having a U-shaped cross-section, the lower horizontal surface being substantially flush with the working surface of the sewing section, and the outer material wrapping around the inner material from one end to form a horizontal surface of 2. , both members being movable to relative positions forming a U-shaped recess sufficient to receive said material, the bend of the U-shaped recess forming a crease in the material passing therethrough; b. a material detector; and a guiding member, in which the material detector is positioned under the guided guide mechanism at a distance approximately equal to the width of the intended folded portion from the bend of the recess between the inner and outer members of the guided guide mechanism. at least one of the IMs, the guiding member being in a position of at least IM, the guiding member engaging the material when in contact with one side of the inner member and displacing the material in a direction substantially transverse to the direction of travel under the direction of the material detector; Consisting of guiding tools.

(Operations and Effects of the Invention) In the above device, a fold is formed by the shape of the recess formed between the inner and outer members of the guided side guide mechanism, and when the crease is formed, the adjustment mechanism adjusts the width of the folded portion. The effect of the cooperation between the working side guide mechanism and the adjustment mechanism is that the stitching can form an orderly fold in front of the part without requiring any manual work by the operator other than inserting the material into the working side guiding mechanism. is born.

When this device is used for inserting an elastic band into a fold formed along the edge of a fabric, the inner member of the guided side am consists of a hollow member with a U-shaped cross section; It is convenient if the arm of the book is formed in the horizontal plane of this member and faces the inner wall of the bend of the outer member, in which case the elastic band is inserted inside the inner member and then around the inner member and therefore the elastic band. After forming the folds, send the sewing to the section.

If at least one of the inner member and the outer member of the guided action mechanism is configured to be laterally retractable, the elastic band can be easily inserted into the interior of the inner member.

The guiding member is composed of at least one guiding tool, but in most cases, it is preferable that the guiding member is composed of two guiding tools that respectively act on the upper and lower surfaces of the inner member and engage the material.
The guided action fl! is then performed by means of a guiding action 2@ acting on the upper and lower parts of the fold, respectively, which preferably displaces the material in an adjusted manner based on the commands of the detector. It is possible to avoid a situation in which material accumulates in the bend of the recess between the inner and outer members of the oval, causing malfunction of the guide device.

Preferably, the outer member has at least one aperture located opposite one of the horizontal surfaces of the inner member for receiving a guiding effect through which the guiding effect engages the soft material and moves the said horizontal surface. come into contact with. In this way, the soft material is held in the inner and outer parts at the point where the guide effect acts.

Preferably, the detector comprises a photovoltaic cell, an aperture is formed on the lower surface of the outer member through which the light beam passes, and a reflective surface opposite to this aperture is formed on the lower surface of the inner member.

(Example) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The article of clothing 1, such as pants or shorts of training or jogging wear, shown in FIG. . This band 3 is previously formed into an annular shape, as shown in Figure 1b, and is then sewn on, either visible or wrapped in folds of fabric so that the worn garment 1 does not slip, so that it does not slip. In the latter case, make a fold along the edge of the fabric, insert the elastic band 3 inside the folded part, and
It is necessary to close the folded part by the work shown in the figure. The width of the fold from the edge 4 of the fabric to the fold 5 is greater than the width of the elastic band 3, and the stitching must be kept as constant as possible during the operation, for example in a chain of two threads. Stitch 6.7 and overlap stitch 8 with two needles
．． The device of the present invention is for sewing with 4 strands of 8' and hiding the edge 4 of the fabric with the underlapping thread. .

FIG. 3 shows a guiding device according to the invention, which comprises a section for forming folds and a section for guiding the fabric in its width direction. The part for forming the fold comprises two U-shaped parts 10.11, one of which 11 is located inside the other 10. The outer member 10 has a bent portion 12 corresponding to a U-shaped base, and is configured to be retractable in a direction transverse to the direction in which the fabric travels by the action of a jack 21. The front end 13 of the upper piece of this member 10 is widened upward in the direction of travel in order to facilitate the insertion of the fabric 9 as a soft material, and the lower piece is formed diagonally with respect to the direction of travel. ing. Further, the upper piece of the external member 10 is formed with an opening 15 for receiving the head 16 of the upper guiding action fif1, and the lower piece is formed with an opening 17 for receiving the head 19 of the lower guiding action mechanism and an example of a material detector. An aperture 18 is formed through which a light beam from a photodetector 20 passes.

As will be described later, the inner member 11 is configured to be retractable in a direction opposite to the outer member 10 across the traveling direction by the action of a jack 22. The U-shaped open end of the inner member 11 faces the inner surface of the bent portion 12 of the outer member 10. Internal material 1
1 is at the fold forming position in the outer member 10, both members 10
．． The recess 23 formed between the inner members 11 is U-shaped in cross section and has a height e sufficient to receive the fabric 9. The recess 24 in the inner member 11 is parallelepiped-shaped and has a height sufficient to receive the elastic band 3. The heights e and f, each having a length f, must be significantly larger than the normal thickness of the fabric and the elastic band 3, and must be dimensioned to accommodate the increased thickness of both by joining.

In the apparatus of the present invention, the configuration for guiding the fabric in the width direction when forming folds consists of two guiding action ellipses 25 and 26 and the detector 20. The guide mechanisms 25, 26 have the same structure,
One 25 acts on the upper part of the fold, the other 26 on its lower part.

Each guide mechanism includes a guide head 16 or 19, which is an example of a guide tool, attached to the tip of an arm 27 connected to a shaft 28. As shown in FIG. 7, the guide head 16 consists of a rotating roller 29 and ten disks 30 that freely rotate within a radial arm 31 formed on the outer periphery of the roller 29. As shown in FIG.

The roller 29 is rotationally driven by a step motor 32 via a belt 33. The pneumatic jack 34 lowers the guide head 16 at a pressure controlled by a pressure gauge and a pressure reducing valve (not shown), and acts on the upper surface of the inner member 11 through an opening 15 formed in the upper piece of the outer member 10. When the jack 34 is in the high position, the stitch head is located away from the outer material 10.

The detector 20 consists of a photovoltaic cell, and the light beam it emits is reflected by the underside of the inner member 11. The detector 20 detects the presence or absence of the fabric 9 by blocking the beam and controls the step motor 32 in either direction.

This guide device, as shown in FIG.
6 is positioned on the upper side of the stitch head 35 so as to be substantially flush with the upper surface of the arm 38 of the sewing machine. Furthermore,
Four rollers 39 are provided around the arm 38 of the sewing machine to support the annular elastic band 3, and two of the upper rollers 39 are arranged so that the band 3 rests on the upper surface of the arm 38. .

This device operates as follows.0 When inserting the elastic band 3, the jack 34 is in a high position and the guide head 16
．． 19 are away from each other, while both members 10.1
The operator hooks the elastic band 3 onto the roller 39 while raising the pressing foot of the stitching head 35, which is also placed at a distance from each other by the jacks 21 and 22 (FIG. 6a). When the band is applied, the inner member 11 is moved in the direction of arrow F1 by the jack 22 (FIG. 6b), and the outer member 10 is moved by the jack 21 when the band 3 is located between the upper and lower parts of the U-shaped member 11. by arrow F
2 (FIG. 6C), and the worker manually inserts the fabric 9 into the upper part of the recess 23 formed between the two members 10 and 11, wrapping the upper and lower pieces of the inner member 11. 9
A crease is created by sliding the fabric 9 along the surface forming the recess 23 of both parts 10.11, in particular along the bend 12 of the outer member 10 (FIG. 6d), and the operator As the outer member 10 is fed in the opposite direction, the folds are easily formed due to the action of the diagonal edges of the lower piece of the outer member 10. The respective lower position of the jacks 34 causes the guide heads 16, 19 to act on the upper and lower pieces of the inner member 11. As a result, guide head 16
．． 19 will hold the fabric 9 together with both sides of the inner member 11.

When the photovoltaic cell 20 is exposed, that is, when the fabric 9 does not block the light beam passing through the aperture 18, a signal from the cell 20 causes the roller 29 of the head 16 to move in the direction of the arrow F3 via a known electronic processing device. direction, roller 29 of Nrad 19
is in the direction of arrow F4 (Fig. 3), and the edge 4 of the fabric 9 is connected to the battery 2.
It is controlled until it covers 0. When the battery 20 is covered,
An opposite signal is issued and roller 29 is reversed. In this way, the two rollers sometimes sew the edge 4 of the fabric 9 along the sewing line 8.
8' act simultaneously and complementary to each other for positioning. - When sewing the fabric 9 and the band 3, when the starting end returns to the inlet of the member 10.11, the member 10.11 becomes jagged 21.2.
2, it is pulled back in the direction opposite to arrows Fl and F2,
The roller 29 is separated from the fabric by the jack 34.

The worker can then finish sewing and remove the clothing item 1.

Dimensions in the above embodiment are as follows.

Length of each month of U-shaped outer member 10: 40+ns+, Length of each month of U-shaped inner member 11: 25 m+a, member 10.11
Recess e between: 3.5 mm, outer diameter of guide head 16.19: 30III1. Recess f between each piece of internal material 11: 3
m11. The distance between the inner wall of the curved part 12 of the outer material 10 and the tip of each month of the inner material 11: 10 mm, and the distance between the rear part of the outer material 10 and the sewing needle when seen in the direction of movement of the fabric during sewing: 2601
1I11° The above embodiments are illustrative and do not limit the invention.0 For example, an alternative guiding mechanism, as described in French Patent No. 2,518,134, i.e. parallel to the direction of fabric travel. It may consist of a guide wheel that has a rotation axis and acts on the fabric with adjustable pressure, and a range corresponding to the permissible variation range of the width of the folded part within which the guide mechanism 25, 26 does not work may be set. , two photovoltaic cells can also be used.

[Brief explanation of drawings]

The drawings are for explaining the guide device of the present invention.
Figures a and lb are views showing the elastic belt of the tracksuit and the annular elastic band, Figure 2 is a schematic sectional view showing the manner in which the elastic belt is sewn, and Figure 3 is a schematic sectional view of the guide device of the present invention. Figures 4a and 4b are schematic perspective views of the internal and external members of the guided tool on the operated side, Figure 5 is a schematic sectional view of the sewing part, and Figures 6a, 6b, 6c, and 6d are FIG. 7 is a schematic perspective view of the guide head, showing each step of inserting the elastic band and forming the fold. 9... Material, 10... External material, 11... Internal material, 12... Bent portion of external material, 16.19... Guiding tool, 20... Material detector.

Claims (1)

[Claims] 1. A guide device for forming orderly folds in the material before the sewing stage that automatically closes the folded portion of a soft material, the guide device being configured to automatically close folded portions of a soft material in the direction of movement of the material during sewing. Apparatus a is equipped with the following configurations a and b near the upstream side of the sewing part when viewed from the side, and is an actuated side guide mechanism consisting of two members, one of which is located inside the other when forming a fold, and the internal material has two upper and lower horizontal planes, the lower horizontal plane is substantially flush with the working surface of the sewing section, and the outer member wraps around the inner member from one end to form the two horizontal planes. , wherein both members are movable to relative positions forming a U-shaped recess sufficient to receive said material, the bend of the U-shaped recess forming a crease in the material passing therethrough; b. An adjustment mechanism consisting of a material detector and a guide action member, in which the material detector is placed under the guided side guide mechanism from the bent part of the recess between the inner and outer members of the guided side guide mechanism to approximately the width of the intended folded part. equidistant positions, the guiding effect member engaging the material when in contact with one side of the inner member and displacing the material in a direction substantially transverse to the direction of travel as directed by the material detector; Arrangement consisting of at least one guiding element. 2. The device according to claim 1, wherein the guiding member comprises two guiding tools that act on the upper and lower surfaces of the internal member, and both guiding tools act on the material simultaneously and in the same direction. . 3. The outer member is provided with at least one opening for receiving a corresponding guiding element.
or the device described in 2. 4. At least one opening is formed on the lower surface of the outer member,
4. The device according to claim 1, wherein the detector comprises a photovoltaic cell positioned facing the opening opposite the reflective surface of the lower surface of the inner member. 5. Claims in which the internal member of the guided side guide mechanism is made of a hollow member with a U-shaped cross section, and the two U-shaped arms are formed by the horizontal plane of this member and face the inner wall of the curved part of the external member. 5. The device according to any one of 1 to 4. 6. A device according to any one of claims 1 to 5, wherein the inner and outer members are laterally retractable.