JPS6053175A - Stitch mold, method and apparatus for producing same - 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 The present invention relates to a plurality of successive seams spaced apart from each other in a pure fabric, extending from one side of the sewn fabric to the other side and returning to the stitches. a sewing thread having a plurality of returning thread loops, wherein: i) the sewing thread relates to a type of stitch that alternately appears and disappears between a plurality of stitches adjacent to each other on one side of the sewing fabric;

The invention further relates to a method and apparatus for manufacturing such a seam pattern.

Known patterns for this type of seam are German and United States Standard C
DIN AlI3-oO or Federal 5ta
No. 10≠ (chain stitch) and No. 2θ (saddle stitch (5
There is an address stitch (addlestitch) or a tacking stitch (tackingstitch). In the seams formed by these seam patterns, individual seams appear at a distance from each other in the thin soil of the sewing fabric, so that there is a free space between two seams. Become. This results in a seam aesthetic appearance that is identical to hand-sewn seams. Such seam patterns are essentially used in the garment manufacturing industry when seams with a particularly pleasing aesthetic appearance are to be produced.

The chain stitch 1011 described above is sewn by a device of two needles (B) located parallel to each other and next to each other, and as a result it is difficult to form stitches at corners and corners. . Moreover, the length of the individual visible seam sections cannot be changed since the distance of two needle volumes lying parallel and adjacent to each other is predetermined. In seams formed with this seam pattern, the individual seams are not looped, tied, or secured together;
They are only "linked"; each suture loop simply connects (links) with another suture loop, and the stitches created in this way form the front end of the stitch. By pulling on the suture, or the suture forming one end of the sprung or omitted seam, it can easily be completely unraveled again. The various seams are therefore purely decorative without any binding effect.

The other above-mentioned stitch No. 202 has a limited length maximum /, ,! ; m) is formed with sewing thread.

If this relatively short piece of suture is sewn and the suture supply is eventually used up, the sewing machine must be stopped and new suture provided, thus creating an undesirable loss of time. A further device for producing seam No. 209 is described in German Patent Specification No. 2 Otsu 3g2 Otsuj. With respect to seam no. 202, there is a risk that if the sewing thread is placed under tension, the sewn fabric will wrinkle or crumple in an unsightly manner. This is because the hidden seams are not joined together, folded or tied.

The object of the invention is to provide a suitable type of seam, which cannot be unraveled by pulling the sewn suture, and in which the suture to be sewn is removed from the suture supply. The goal is to provide something that can be continuously supplied.

In the context of the invention, the object is achieved in that the suture forming the seam pattern is guided in a single strand through the intersection of return suture loops and interlaces with the loop at the intersection.

The method according to the present invention for manufacturing this seam pattern includes:
When the sewing thread extending from the sewing thread supply section located on one side of the sewing fabric is grasped, a loop is formed between the grasped section and the sewing thread supply section, and the loop stretches the sewing fabric. piercing and being brought into a thin section of the sewing fabric located opposite the sewing thread supply; the sewing thread loop being guided back through the sewing fabric at a point spaced from its exit point in the pure fabric; and a suture loop is guided over the periphery of the suture supply and intersects with a portion of the suture extending from the suture supply.

The device according to the invention for producing new seam patterns becomes clearer from patent claims 6 to 73.

The following description of a preferred exemplary embodiment of the invention serves as a brief explanation of the appended drawings.

The structure and manufacture of the new seam type will first be schematically described with reference to Figure 1.

Decorative stitches (Fig. 1≠) are created by a commonly used method in a single-layer or multi-layer sewn fabric T.
and in this decorative seam, the sewing thread/ is made from one side, especially in Figures 1 to 7 and Figures 1≠, of the sewing fabric T.
The upper side of the seam is alternately visible and hidden between multiple adjacent seams. The pobbin 2 is arranged in a manner known per se in a rotating suture loop catcher designed as a pobbin carrier 3 with a hook. The hook for capturing and spreading the suture loop is only shown in FIGS. 6 and 7 for simplicity and is designated by the reference numeral 7. Alternatively, the pobbin λ is likewise accommodated in an oscillating pobbin carrier with hooks or even in a shuttle known per se, the tip of which captures the suture loop in a manner commonly practiced. And it helps spread the word. At the beginning of stitch formation, the length of suture/thread corresponds to all the suture thread that pobbin I can receive.

A special needle 1011-, which has a laterally open eye and is known per se, sews the sewing material T (second
figure). On the opposite side of the sewing material T, the sewing thread/
is inserted into the eye of the needle 10≠ (FIG. 3).

At the same time, the thread section extending from the thread supply of the bobbin thread is retained at its end by a previously made stitch, which is indicated by the reference numeral 1 in FIG. When the first seam is made, the clamping should be performed manually or otherwise.

As soon as the thread / is captured in the eye of the needle 10, the needle moves upwards and draws the thread / in a thread loop away from the pobin and onto the side of the fabric T (Fig. ≠).

The dough T is immediately moved in the direction of the arrow A (FIG. 5) by means of a feeder arrangement known per se. Subsequently, a new stitch is created at a distance from the first stitch by the needle 10≠ penetrating the kneaded fabric T. At this moment, the clamping portion is attached to the sewing thread loop f1. The rotating hook 7 of the bobbin carrier 3, which is shown to be inserted into the bobbin, unfolds the thread loop after it has been removed from the needle IO'l, and finally the bobbin! Guide the suture loop around the entire overlying suture supply group (FIG. 7).

During this time, the needle 70≠ is pulled out of the dough T again toward the side of the dough that is away from the bobbin knot.

By means of the control device//g, which will be described later, the roof Z, which has been pulled by the sewing thread supply unit and removed from the needle IO'l, is pulled again onto the opposite side of the knitted material (Figs. g and 7), and its As a result, a visible new part of the seam pattern is produced. In Figure 1, after a further feeding step of the dough T in the direction of arrow A has been accomplished, the operating position corresponding to Figure 1 is again reached and the seam-forming operation is repeated in the manner already described. I can do it.

As is clear from the sewing process of the sewing thread shown in FIG. Sewing threads are alternately visible and hidden between multiple adjacent seams on the side of the kneaded fabric. The part where the seam is visible is formed by a sewing thread loop B on the top side of the kneaded fabric T. On the underside of the fabric T, the sewing thread is threaded through the apex or intersection of the thread roof 1. Sewing thread guided as a single strand through the intersection point g of loop B /
is thus interlaced with a large number of loops, making it impossible to unravel the stitch in the manner known for chain stitching.

The distance between individual seams can be adjusted as desired. For example, in FIG. 11I, the sewing thread is visible over a relatively short distance on the front side of the sewing material T, and is hidden over a relatively long distance on the underside of the knitted material.

Furthermore, as is clearly apparent from FIG. 14', this particular intersection of the roof and the thread is somewhat drawn into the dough when the appropriate thread tension is applied.

Various details of a suitable apparatus for producing the seam patterns already described are expressed below.

Regarding FIG. 13, the sewing machine 10/ is the machine stand 10
2, on which a device, for example a needle par, is arranged in a manner known per se, by means of which the needle 104/- is moved back and forth with its open (/3) eye. . Furthermore, arranged in a manner known per se on the machine stand is a toothed feeder, which feeder advances the dough T during the steps. For clarity, the device is not shown in the figures.

In FIG. 70, the tip of the needle 1011 is illustrated by 10j, and the open eye is illustrated by 10o. A groove 10K formed on the needle IO'l is provided on the open side of the eye 10B, and the tongue piece 107 is inserted into the groove.
slides. The tongue piece 107 is held on a thrust piece 109, which is slidably connected to the needle IO'l-, for example via a drag mechanism.

During the relative movement between the needle 1oti- and the tongue 107, the tongue 10
7 moves to the position where it closes eye 10 O. This occurs in FIG. 70 when the needle 10≠ moves upwards with respect to the tongue 107. Furthermore, as you can see in Figure 70,
The kneaded fabric T (in two layers) rests on a fabric carrier /10 illustrated as a needle plate O (/l) The following parts are arranged at the bottom of the sewing fabric T (Fig. 73)
: The suture loop catcher 3 has already been described, the catcher being illustrated as a bobbin carrier and a nip, and with the aid of chaining means known per se @1011
It rotates at the same time as the - movement. Tool //, 2 (1st/Figure)
is likewise of a type known per se and is used for inserting the sewing thread/ into the eye of the needle 70≠ when the eye is located at the bottom of the sewing material T. The working cycle of the tool //, 2 is likewise simultaneous with the movement of the needle 10Il-sharpening pin carrier 3.

A further control device //≠ is provided at the bottom of the sewing material T to control the sewing thread during the formation of the seam. This device is driven so as to be pivotable about an axis (FIG. 13) by a device known per se and not shown.

A further control device 7 is provided on the side of the sewing material T remote from the control device //7 for controlling the sewing thread during stitch formation. This control device includes a hook //g (Figures 72 and 73)
, the hook is connected to lever 7.2 via a clamp joint.
Connected to 3. A two-armed lever /2.3- is rotatably mounted on the machine stand 102 and articulated to the rocker /22 on the side opposite the clamp joint /9. rocker 72.2
is likewise pivotably supported on the machine stand 70.2. The side lever located opposite to lever/2, rocker/2.2, is articulated to lever arm/23;
The lever arm has a crossbar located above it.
1. via which it interacts with conventional cam means //3. Similarly, machine stand 10 is used for Shi-G-Arm/No.3.
rotatably mounted on 2.

Lever arm/, 23, rocker/2.2 and lever/2
j is gear 1ever me
chanism), and the mechanism is a hook/
/g is used to increase the rotation range.

It is movable on the sewing material T and has a control device//
The hook //g attached to 7 interacts with the needle 70≠ and, as can be seen in Figures 1-2, especially in Figure 5,
When the sewing thread / is located above the sewing fabric T,
It is adapted to scoop up and hold one of the λ side sewing threads of the loop B coming out from the eye of the needle 70≠.

Control device located at the bottom of the sewing material T//l
l- comprises an arm /, 20, said arm /20 having an axis A
It is fixed to a shaft /30 which can be pivoted around. The shaft /30 is driven oscillatingly in a manner known per se. The pivoting movement of the arm /20 and, as a result, of the control device //11- is carried out in a plane extending parallel to the direction of movement of the needle and the direction of travel of the sewing material T. A slightly curved thin plate /, 2/ is cantilevered at the free end of the arm /20. The lamina /, 2/ has a hook at its free end, which hook engages the suture / (FIGS. 1-7).

In FIG. 1, the hook //g of the upper control device //'1 holds the loop B of the sewing thread /, and then begins to move in the direction of arrow B. This movement is performed by a cam device/
/3 is controlled by the above-mentioned transmission and mechanism. During this movement of the hook //I, the control device //≠ begins to rotate in the direction of the arrow C and at the same time picks up the amount of thread supplied by the hook //g and required for the thread loop /3/ ( Figure 2). In the operating phase with respect to FIG. 3, the hook //g has completely fed the suture loop, and the suture now forming the loop is transferred to the needle IO' by the tool //2 with respect to FIG.
It is in contact with the needle 1011- at the bottom of the sewing fabric so that it can be inserted into the eye of the needle 1011-.

Shortly before this, the thrust piece 109 carrying the tongue piece 107 moves so as to rest on the sewing material T (FIG. 1O) and as a result stops. Sewing needle 10≠ means 10 points and 10 tongues.
7 and is moved downwardly a short distance with respect to the thrust piece 109 so as to be opened for insertion of the suture.

Figure 5 shows how the hook //g, in interaction with the control device //≠, picks up the thread loop again (7g), and the catch shows how much thread has been taken. It is shown being gradually released by the control device //lI-. The hook//g is then held virtually stationary. In the operating phase illustrated in FIG. 4, the control device //≠ reaches the rest position and the pin p engages the suture on/side of the loop O and retains the suture fibers. The needle 1011 sews the sewing material T again and moves to the bottom dead center position. Sewing thread/ga hook 7
After being removed from the needle /θ≠ by , the needle 10IJt moves upward again. Therefore, as already described in the introduction section, the sewing thread loop O is connected to the bobbin! It is guided around the suture supply located above. If (then) the upcoming apex of the suture loop is located diametrically opposite the needle IO'l- (figure g), the suture loop is scooped up again by the hook //I of the control device //7; Then, it is moved out of the effective range of the hook 7.

The control devices //4L and //7 move back and forth between both sides of the sewing material T where the length of the sewing thread is required for stitch formation. The pobbin 2 carrying the suture supply is subjected to a braking action so that only the exact amount of suture desired is withdrawn therefrom.

In a variant embodiment of the invention, it is further possible to arrange the attachment of the needle 10≠ on the needle purr or similar device on the same side as the suture supply is located.

Moreover, it is furthermore possible to use a needle with λ points to create the seams already mentioned, which needles can be moved back and forth between the objects in a manner known per se. , seven of the attachments are positioned above the sewing fabric T and the other is positioned below the fabric.

Moreover, the control device //≠ is the apex K of loop B
It is further useful for drawing the intersection of sewing threads that occurs in the sewing material T into the sewing material T.

[Brief explanation of the drawing]

Figure 1-T shows the successive stages of operation of the device for making a seam pattern with visible and hidden parts on one side of the sewing material; Figure 1-O shows the tongue for closing the eye of the needle; Partially enlarged view showing a sewing needle with a tab; Figure 1/Figure 1 shows the device for inserting the suture thread into the eye of the needle; Figure 7.2 shows the thread control device; Figure 73 shows the sewing machine. A schematic depiction of FIG. /...Sewing thread, λ...Bobbin, 3...? Bin carrier, j...stitch, Otsu...sewing thread loop, 7...hook, g...loop apex or intersection, 10/...sewing machine, 102...machine stand, 10≠... ·needle,
10! ;... Needle tip, 10 Otsu... Eye, 107... Tongue piece, 10g... Groove, 109... Thrust piece, /10
...Dough carrier, //2...Tool, //'1. /
/7...control device, //j...cam device,
//Otsu...Cross par, 77g...Hook, //9
...Clamp joint, /20...Arm, /2/...
・Thin plate, /2.2...Rocker, /23...Lever arm, /, :2j...Lever, /30...Shaft, T...Sewn fabric, p...Bin. (2/)

Claims (9)

[Claims] (1) Having a plurality of successive stitches spaced from each other in the fabric and a plurality of thread loops extending from one side of the fabric to the other and returning to the stitches. In a type of seam that includes a sewing thread, and the sewing thread is alternately visible and hidden between a plurality of stitches adjacent to each other on one side of the sewing fabric, the sewing thread (1) is a return sewing thread loop (B). A type of seam characterized in that it is guided as a single strand through the apex or intersection point (g) of the strand, and intersects the V-loop through said intersection point. (2) The above intersecting part of the sewing thread is the intersection (g) of the loop (O)
2. A seam pattern according to claim 1, characterized in that the pattern is drawn into the sewing material (T). (3) In the method for manufacturing a seam pattern related to claim 1 or 2, the portion of the sewing thread extending from the sewing thread supply section located on one side of the sewing fabric is gripped. A loop is formed between the gripped part and the sewing thread supply section, and the loop penetrates through the sewing material and is carried away from the thin section of the sewing material located opposite to the sewing thread supply section. , the thread loop being guided back through the sewing material at a point spaced from its exit point in the sewing material; and the thread loop being guided around and extending from the thread supply. A method of manufacturing a seam pattern characterized by intersecting parts of the seam. (4) The method according to claim 3, characterized in that the thread is subjected to a braking action when it is withdrawn from the thread supply section. (5) After the thread loop is first guided through, the entire amount of thread required for each seam-forming operation of the individual seam type has passed through the sewing fabric and left the thread supply. The excess sewing thread that is drawn onto the sides of the sewing material and which was required during seam formation during the above-mentioned interlacing operation is transferred to the sewing thread supply section and the adjacent sewing material after the sewing thread loop has been guided back. /The method according to claim 3 or claim ≠, characterized in that it is drawn into fine soil. (6) a needle driven back and forth and having an open eye and guiding the suture coming from the suture supply, a suture loop catcher driven at the same time as the needle, and a tool for inserting the suture into the eye; and a control device for controlling the sewing thread during stitch formation. A sewing machine characterized in that a sewing thread loop (B) is guided around the entire sewing thread supply section (bobbin 2). (7) The sewing machine according to claim 1, characterized in that the thread supply unit is wound on the bobbin (2), and the thread loop catcher (3, 7) rotates around the bobbin. (8) a needle driven back and forth and having an open eye and guiding the suture coming from the suture supply, a suture loop catcher driven at the same time as the needle, and a tool for inserting the suture into the eye; and a control device for controlling the sewing thread during seam formation. A sewing machine characterized in that the sewing thread is disposed in a shuttle that carries a thread supply through the shuttle. (9) A first control device (/HA0) is located on the thin soil facing the sewing thread supply section (bobbin, 2) of the sewing material (T), and this device is used for controlling the sewing thread loop (B). The sewing machine according to any seven of claims 2, 3, and 3, wherein the sewing machine controls the amount of sewing thread required and pulls the sewing thread so that the sewing thread intersects. 01 Control device (//≠) is characterized in that it comprises a pivotable arm (/, 20), at the free end of which a hook member (/2/) for receiving the suture thread (1) is located. A sewing machine according to claim 1. The αη arm (/20) is pivotable about an axis (A), which axis extends substantially perpendicular to the direction of movement of the needle (1011). The sewing machine according to claim 70. 0→ A second hook-shaped control device is provided on the side of the sewing material (T) that is remote from the sewing thread supply section (bobbin 2). (
//7.11g) is located, which device, in interaction with the seventh control device (/ha0), controls the amount of suture required for the suture roof'l). A sewing machine according to any one of claims 4 to 1/1, characterized in that: 01 characterized in that the second control device (//7.//I) is pivotably mounted and connected to the rocker (/-2,2) in order to increase its pivot range. A sewing machine according to claim 72.