JPS6211492A - Method and apparatus for bundling ring stitch yarn end - 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 creates a circular seam in textile products such as cloth and nonwoven fabric, synthetic resin coatings, leather, etc., and pulls the thread end of this seam. It concerns a method of tying into an unraveling trap knot (called a sing/L//I/-pu knot) and a handy device.
Although the process is simple, and therefore the device itself can be held and operated with one hand, it often achieves complex objectives and its applications are extremely wide-ranging.3 For example:
It is ideal for sewing pairs of socks closed and for sewing labels μ, etc. at the same time, and prevents damage to the product due to conventional sewing with metal wire, etc., and handlers' hands and fingers from the tip of the wire. The disadvantages such as damage to the surface are completely eliminated. moreover,
It can also be used as a mark when sewing fabric or basting, and can be used as a binding that can be pulled apart.
//I/- Since it is a knot, it can be removed immediately after use, without causing any damage to the product. Also, when cleaning laundry, a piece of cloth with the client's name embroidered on it is attached to the laundry.
With the device of the present invention, it is possible to sew the marked cloth piece without damaging the laundry, and it is very convenient because it is easy to untie the sewing thread and remove the cloth piece. It is. It is no exaggeration to say that there are no limits to other uses.

(Prior Art) There is no known prior art that is close to the technical content of the present invention. If I were to force myself to do so, I would like to suggest that the inventor of the present invention should refer to Japanese Patent Application No. 55-97336 (Japanese Unexamined Patent Publication No. 57-28782), which was previously filed by the inventor of the present invention.
) is to some extent ゛. However, although said invention and the present invention have some points in common in their objectives, the methods and apparatuses of the two are completely different. This is because the present invention is based on a completely new idea in the formation of the circular seam and the means for tying a single loop in order to widen its range of application.

(Problems to be Solved by the Invention) The present invention provides a system for creating a circular seam on textile products such as cloth, non-woven fabric, synthetic resin film, leather paper, etc. using only the needle thread of any thread or string. , and automatically completes the single loop knot by unraveling the thread end of the circular seam,
If you simply want to make circular stitches, you can use a conventional sewing machine, but if you don't take care of the ends of the thread, the thread will come undone, so for example, you should sew two pairs of socks or gloves together. It cannot be used for purposes such as Conventionally, there was no device to use thread to close the joints, so metal wires, etc., had to be used, but this would damage the product, making it unsuitable for expensive products. There is no other way but to do so, which is extremely inefficient and costly. The present invention automatically completes the formation of a seam and the disposal of the thread tail during sewing and closing, and is an unprecedented technique in the past.

(Means for Solving the Problems) The present invention realizes binding of the ends of sewing threads by using a hand-held device when forming stitches using threads. As shown in Figures 2, 8, and 12, the entire device is constructed in the shape of a pistol, and has a main shaft (6) at the rear, and one gear (6) on this main shaft.
) and a group of cams (71, (gl , (9) , (t
ol, f++) are attached, and the hand μ(2)
The upper part is formed into a sector gear (4) which meshes with the gear (6) on the main shaft, and by squeezing the handle and pulling it towards the handstock f1), the gear (6) so that each cam makes exactly one revolution, and thus each cam also makes one revolution. The respective mechanisms linked to each cam are as follows.

What is linked to the cam (7) is the lowering mechanism of the needle (A), and the short rod [13+
The rear end of the needle rod 0 is pivoted at the pin (12I) and joined at the inclined surface (11!a) to form a latch mechanism. ), and the needle (K) descends and rises twice during one operation (Fig. 12-■).

A thread pulling mechanism is linked to the cam (8).
8) A short rod that pivotally supports the low/L/@ that engages with) (first
It consists of a connecting rod (24) connected to this, and a hook lever, the tip of which is formed into a hook suitable for hooking a thread.

A cloth feeding mechanism is interlocked with the cam (9).
) The roll (c) that engages with the tail part (27a) of the fabric
The fabric table itself is slidably fitted into a groove formed on the top surface of a pedestal (G) that forms the barrel of the pistol-shaped machine frame, and the center part of the fabric table is fitted into the frame (G). 27b
), and the rear end of the presser plate (support) is attached to the pivot (
27c).

(Interlocking with the L re-cam 1101 is a yarn p-n forming mechanism, and the low Iv (g) that engages with the cam (10) is pivotally supported by the rear half (81a) of the bending rod C311. A joiner (J) is connected to the end of the front half (81b) of
A hook link is rotatably connected to the joiner (34).

Further, the hook rod itself is fitted into the cylindrical cam (to) in its body, and the protrusion (33b) provided on the hook rod is engaged in the groove μs of the cylindrical cam. (33c) is a hook provided at the tip of the hook rod.

A bellows needle mechanism is interlocked with the cam (11), and the cam il
A connecting rod is connected to the center of the short rod 3η that is pivotally supported by the low WCa** that engages with l, and a thrust frame (2) is pivotally attached to the other end of the connecting rod. A bellows needle is attached to the holder. (441 is the hook of the latch needle (4~ is the latch).

(for production) Next, the operation of the above-described device of the present invention will be explained.

As already mentioned, the present invention creates one chain stitch in cloth, etc., and ties the end of the seam in a single loop, but this can be done on any object using a handy manual device. The operation of this device is as follows. In the handheld pistol-shaped device shown in Figure 1, the main shaft (5), each carrying a predetermined action, is equipped with a group of cams, and the hand (2) is squeezed by the hand.
- By pulling this up to the hand stock +11, the main shaft rotates once, and during this time, the υ needle (2) performs two downward and upward movements due to a series of mechanisms that engage with the cam (7), and is related to the movement of this needle. The following actions are performed in sequence to achieve the objective. In other words, when the needle (K') is lowered for the first time, the needle (K') pierces the fabric etc. and reaches the bottom of the pedestal (G) (Fig. 4), then the needle (H)
The end (A1) of the thread that has been advanced is hooked with the hook (26a) of the hook lever (26) linked to the cam (8), and the thread is pulled out for a certain length (Fig. 4).

Next, by pulling the hook lever linked to the cam (9) to the right by the action of the cam, the central part of the pulled out thread (A2) is hooked with the hook (33c) and is pulled to the right. Further, the hook lever engages with the cylindrical cam (2) and rotates by 0° to form an upward thread loop (L1).
) (Figure 5).

During this operation, the hand (6)) rises once. Then cam (
The forward movement of the fabric table (B) and the presser plate (2) which are linked to the movement of the cloth (C) is carried out. Next, the needle (6
)) penetrates and descends (Fig. 6). Sara K, leaving (8th
), the loop (L1) and the hook (2
6g) The central part of the thread (As) between the two is pulled to the right by the hook (material) of the latch needle, forming a loop (L1) and pulling it into the gap (P). Figure 8). After this, as the second needle (6)) rises, the stitch (K)
The thread coming out from the loop (L
1) is tightened to the back side of the cloth, etc. (C), thus forming one chain stitch ←η on the cloth, and completing the binding by using the end of the thread as a single A/μm knot (first
．． Figure 0, Figure 11).

(Example) An example of implementing the device of the present invention will be explained with reference to the drawings.
In Figures 2 and 8, +1+ of this device configured in the Binut μ type is a hand stock that protrudes diagonally downward to the rear of the machine frame (F), and (2) is a support shaft (3). ) as a fulcrum, and its lower body is rod-shaped and its upper body is a fan-shaped gear (4)
It is a handle V formed in. (6) is an i-axis installed at the rear center position of the machine frame (F), and on this axis there is a gear (6) that meshes with the sector gear (4), and a cam group (7) to be described later. , 181,
+91, (+ol.

(11) is installed. hand stock f1)
When you squeeze the handle (2) with your hand, the handle (2)
) is pulled in the direction of the arrow, so the sector gear (4)
rotates in the direction of the arrow, rotating the gear (6) and cam group that mesh with it, but the stopper (S
) is provided. The hand/L'+2+ is normally in an open state due to the spring (34).

The cam shaft (5) has cams (71, +81, +91,
Five types of cam groups (flol, fl1) are attached, and mechanisms that operate in conjunction with these cam groups will be explained in sequence below.

The cam (7) is a disc cam with the shape shown in Figure 12-1.
8))) is interlocked with this, and the phase (7a) of the cam is
) is engaged by low)v(14). The row μ has a pin (1
Attached to the rear end of the short rod (13) pivoted (by 2))
8a), the bent portion of the needle rod 051 is pivotally connected to the support plate (51) by a pivot (ISa), and the needle rod moves up and down with this pivot as a fulcrum, giving rise and fall motion to the needle (6)). Note that the engagement between the front end of the short rod 0→ and the tail of the needle rod 0@ forms a clutch. The tail of the pick and needle rod (16) is formed into two forks, while the front end of the short rod Q3) is thin and fits into the fork, and both are pivotally connected by a pin (12), and the contact end surface of the two is is a slope (12a) as shown in the figure.

Therefore, when the roller circle is driven upwards, the short rod (
I3) and the tail of the needle rod (I-shape) act together as an integral coupling source, but conversely, when the low/L'04) is driven downward, the short rod (1 turbidity is the pin ( Using lno as a fulcrum, move the needle (
15), so that it can be rotated downward regardless of the (161, (18) is the cam peak of cam (7), (1
7) indicates a valley.

The cam (8) has the shape shown in FIG. 12-■, and the thread drawing mechanism is interlocked with it, and numeral 4 is a low μ that engages with the curved surface (8a) of the cam (8). The roll is pivoted (2)) to the rear end of a short rod (20) supported on a support shaft (34), and the other end of the short rod is connected by a pin □□□, and the other end of the short rod is The end is connected to a hook lever wing supported on a support shaft (c). The iron is a pin, and the thread hook (26a) formed at the upper end of the hook lever is a functional hook. (8
In b), the peaks (8C) of the cam indicate valleys.

The cam (9) has the shape shown in FIG. 12, and the double feed nine-roll mechanism is interlocked with it, and the cam (9) is a roll that engages with the curved surface (9a) of the cam. The roll is the front half of the machine frame (F) (
A fabric stand slidably fitted into the general girder/groove (H) in the longitudinal direction of the pedestal (G) forming the upper surface of the barrel part of the screw (A/) is connected to the end of the tail (27a) of the screw η. There is.
A frame (27b) is formed on both sides of the central part of the fabric table, and a fabric presser plate (support) is pivotally attached to the frame by a pivot (27c), and is pushed downward by the force of a spring or the like (not shown). It is configured. There is a narrow groove (30mm
) and (Ha) are bored vertically facing each other. The fabric feed length of the fabric table and presser plate is determined according to the shape of the cam, and this is the length of the chain stitch.

The cam (lO) has the shape shown in Fig. 12-■, and the yarn loop forming mechanism is interlocked with this, and the cam is in the position (10a) at 0.
The roll that engages with the back half of the bent portion 311 (Ila
) is attached to the end of the An elongated hole (81c) is provided at the tip of the front half (sxb) of the bent portion bt+, and a joiner (J) is pivoted (81d) into this elongated hole.
(81e) is a support shaft that supports the bent portion of the bent portion cn+. A hook rod (33a) is rotatably attached to the joiner (J), and the hook rod (331) is fitted into a cylindrical cam (34) at its center, This is a cam groove provided. (33b) is a protrusion provided on the hook rod (which engages with the cam #Iti351.

(33c) is a hook formed at the tip of the hook rod (c). Under normal conditions, the hook is in the ramming position as shown in FIG. 10
When it retreats with the rotation of 1, the hook rod itself moves 9 as the protrusion (aab) that engages with the cam groove of the cylindrical cam moves.
It is configured so that it rotates 0° and the hook points upward.

The cam (11) has the shape shown in FIG. ) is attached to the upper end of the short rod (3η) with the support shaft (3) as the fulcrum.

(87a) is a bottle that connects the connecting rod □□□ at the center of the short rod (3'7), and the thrust frame (A) is connected to the other end of the connecting rod (C) +401 and ni+ is an elongated hole provided in the center of the thrust frame. The thrust frame is fixed with a latch needle (C) using the long (411).
4z, (piece is the hook formed at the tip of the bellows needle, (
The fourth season is the bella, (4bl is the pin that pivots the bella.
The hook of the bellows needle is attached horizontally (Fig. 1).

The thread (4) is fed out from the thread bobbin (B) and is inserted into the needle hole (K') of the needle rod (through the back of the needle, needle (5)).

The device of the present invention has the above-mentioned configuration, and its operation will be explained next. After the cloth to be sewn (C) is inserted between the fabric stand (B) and the presser plate, the hand stock fi
+ and hand /L/ (2) with fingers and pull until hand A/ +2+ contacts hand stock fi+, sector gear (4) rotates in the direction of the arrow, and the main shaft (5 ) The gear (6) on the top rotates exactly one rotation in the direction of the arrow, so each of the cam groups on the main shaft also rotates one rotation.The movements of each mechanism accompanying the rotation of these cams will be explained in sequence.

By the rotation of the cam (7), the cam crest of the cam (Low #A4 that engages with lφ) * jp and the needle rod and needle (8))
starts the first downward movement before the other movements.

In other words, when the low/L/(141) is pushed upward by the cam crest (I6), it raises the tail of the short rod 03) and the needle rod 00 integrally connected thereto, so that the spindle (15)
The needle attached to the tip of the needle rod that rotates around a)
8)) makes a downward movement, and as shown in Figure 4, the cloth (C)
At this time, the needle hole CFe
') The tail end (A1) of the thread (4) is protruding outward.

Next, the hook lever mount is rotated in the direction of the arrow (Fig. 4) through the cam (row/L' 122 that engages with the cam), the short rod that supports it, and the connecting rod wide 1 that interlocks with it. The hook (26a) provided on the ring of the hook lever hooks onto the thread end (A1) 1 protruding from the needle hole and rotates in the direction of the arrow (Fig. 4). By doing so, a certain length of thread (A2) is pulled out.

Next, low/L' that engages the cam (!0) (35 is pushed up by the cam peak (10+, 1), bending portion Ctt)
rotates in the direction of the arrow around support $11 (81e)
Figure 2 - ■), pull the hook rod f33) (in the direction of the arrow).
Therefore, at this time, the hook (33c) of the hook rod hooks the center part y of the thread (A2) pulled out by the hook (26a) and retreats, and when retreating, the cylindrical cam e4
Due to the displacement of the protrusion (aab) that engages with the groove l35 of the hook (3), the hook (3) rotates by 90 degrees.
8c) is also displaced 90° to an upward position, and the thread thus gripped by the hook (38c) is twisted into a loop (L1
) forms an α-shape (Fig. 6).

The ends of both legs are placed on the seam of the shoe and the hook (26a), forming a top 1/(:A/-b (L1)).

Immediately after the movement of the hook lever starts, the needle (6)) rises once (FIG. 5).

Next, the low/l/(company) that engages cam (9) K is the cam mountain.

(9b) (Fig. 12 - position) is pushed forward, and the fabric joint and frame (27
Move the cloth presser plate ■ pivoted to b) forward together, and press the cloth (
Send Q forward (Figure 5).

Next, the cam peak of cam (7) (low/L'< by i@
141, the needle (8)) performs a second downward movement, and this time, since the cloth is moving forward, the needle insertion point σ) is moved backward (τ) (Fig. 6). ) At K, pierce the cloth (C) and descend through the aforementioned loop (L1). At this time, the state of the thread descends from the needle insertion point (at) to the needle hole CK), passes through the needle hole,
It rises along the needle body.

Next, the cam (I1) pushes the short rod (to) and the connecting rod (to) in the direction of the arrow through the low to (to) engaged with it (Fig. 12-■), and further connects When the latch needle (13 moves forward, the hook forming the tip of the latch needle) interlocks with the rod via the thrust frame @9), the latch 4 advances through the needle hole (K'). Rising thread part (A4)
Between the loop (Lt) and the lower part) and the needle itself, the ffi (P) enters into the hook) and the lower leg (Al1) of the α-shaped thread mentioned above crosses the t- The first step is to reach the position where the latch needle passes the thread (A4), and then immediately the backward movement of the latch needle ←= (to the hook) pulls the lower leg (As) of the α-shaped thread. Multiply (
L1) and passes through the gap <p>, and at this time, due to the action of the tongue, the round thread passes through the gap s (P) with certainty;
In this way, after the pin (L1) has completely passed through (A4), the latch needle makes a small forward movement, which causes the hook to move.
The subsequent process of releasing the loop (1 piece) held by the hook from the hook is performed continuously.

Finally, the needle (8)) performs a second upward movement by the cam (7) and pulls up the thread following the needle hole (B), so the μm plate (L1) is placed on the back side of the cloth (C). , tighten with thread (Fig. 8', Fig. 9). Thus, the camshaft (5)
When each cam group completes one rotation, one chain stitch 171 is completed as shown in FIG. 10, and the thread end of the stitch is placed on the back side of the cloth as shown in FIG. to complete the unraveling IVIL/-pu knot.

The above movement is completed instantly, and after completion, hand A/
When (2) is released, the hand A/ (2) returns to its original position by the force of the spring (20), and the cam group also returns to its original position. At this time, the hook (26a) releases the thread end (A1) that it was holding, and when the short rod (+) of the needle lowering mechanism (+ the roller lvH attached to the groove) reversely rotates the cam (7), The cam mountain is driven from top to bottom by In, but the short rod forms a clutch mechanism with the needle rod (1111) by the pin Q2 and the slope (12a).
The short rod H rotates downward around the pin (1'4) regardless of the needle rod, and does not pose any hindrance to the reverse rotation of the cam. Thus, the - rotation movement is completed.

The present invention is extremely convenient because, as described above, it is possible to form a tightenable seam in a desired position by one manual operation.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram (side view) showing the overall configuration of the device of the present invention;
Figures 2) and (b) are explanatory diagrams showing the front and plane appearance of this device, Figure 8 is an explanatory diagram (plan view) showing the cam group and the rolls in contact with it, and Figures 4 to 9. is an explanatory diagram showing the action of each mechanism linked to the cam, Fig. 1θ is an explanatory diagram showing the chain seam and thread tail (surface of cloth, etc.), and Fig. 11 is an explanatory diagram showing the binding of chain seam and thread tail (cloth, etc.). ), Figure 12 I to 1
FIG. 2V is an explanatory view showing the cam and the low μ that engages with the cam, and FIG. 18 is a perspective view showing the external appearance of the device of the present invention. Symbol explanation (4), thread; (At), thread end i (B), thread bobbin; (F) 'Machine frame (G) 0 pedestal; however), groove i (
J), Joyner-i (K). Needle 1 (10, needle hole; (i') ``gap; (s)'
Stopper; Cr), (T'), needle insertion point i 11)
, hand stock; (2)・hand/V; (phantom, pivot;
(it" sector gear; is)" main shaft; (6)・gear i
(71, +81, +91, (10), (
11)-Cam; (7a), (8a), (9a), (10
a), (lla), cam phase; (8c), (9c)-
Valley; C12), axis; (12g)-slope; α-slope; Short rod; (18a)-axis; α41. Low lv; (If
O・Needle rod (15a), supporting shaft; 翰、short rod; (g,
a -/l/; H, connecting rod; m/hook lever;
(26a), hook; (b). Fabric stand; (27a), tail; (2yb), y
Rem; ha. a −A/ ; @°Paper presser plate “Kai (80”) ゛Narrow groove”
G")° interesting folding rod i (81c), long hole i (
81d), axis; (32)-o-1μ; (to)
, hook rod i (33b), protrusion i (33c) 7
0 cylindrical cam; link, cam groove; -, low N; 0η, short rod; link, connecting rod; -, thrust frame; (4
1. Long hole; +431. Bellow needle;-), hook; (4
s, Buff 114F L seam; -, Spring; (51
), support plate. Applicant: Toyo Kasei Kogyo Co., Ltd. Onoji Department Agent Patent Attorney Takashi Mizuguchi - Figure 2 (a) Figure 2 (b) Figure 4-1 Figure 6 Figure 5 Figure 7 Dormitory 10 Figure 11 Qin 12
Figure-1

Claims (3)

[Claims] (1) Thread is placed on the fabric (C) placed on the fabric table on the pedestal, and the thread is threaded onto the needle (K') through a mechanism that is linked to a series of cams mounted on the main shaft by manually driving the handle. The threaded needle (K) is lowered to pierce the cloth, etc., and then, under the fabric table, grasp the end of the thread protruding from the needle hole of the lowered needle and pull out a certain amount of thread. , once the needle is raised, the central part of the thread that has been pulled out is hooked onto the hook, and the thread gripped by the hook is formed into an upward loop (L_1) by the 90° rotation of the hook, and then the thread is pulled out of the fabric. After the cloth, etc. (C) is advanced by a predetermined length by the feeding mechanism, the second needle is lowered to pass the needle into the loop (L_1), and then the loop (L_1) is first grasped by another hook. The loop (L_2) thus formed advances from the needle (K') and reaches the fabric (C), and the thread part (A_4) and the needle itself. Each means for tightening the loop (L_2) to the back side of the cloth, etc. by pulling the thread into the gap (P) between A method for tying thread tails of a chain seam, characterized in that one chain seam is formed in a cloth or the like by continuously performing the following steps, and the thread tail of the seam is tied into a single loop knot. (2) A means was added to hook the thread (A_1) connected to the seam of the cloth, etc. from the needle hole (K') during the second ascent of the needle, pull it in, and cut the thread with an appropriate cutter. A chain seam thread tail binding method according to claim (1). (3) A gear (6) and a group of cams are attached to the main shaft (5) at the rear of the machine, which is entirely pistol-shaped. 4), and each cam has a mechanism interlocked with it, namely: (i) A needle ( A needle lifting/lowering mechanism is formed by engaging a clutch structure with the rear end of a needle rod (15) having a needle rod (15) attached to its tip. (ii) Connect the other end of the short rod (20), which pivotally supports the roll (22) that engages with the cam (8), to one end of the connecting rod (24), and connect the other end of the connecting rod. A thread pulling mechanism is pivotally connected to the lower end of a hook lever (26) that is pivotally supported on a support shaft (25). (iii) A fabric table in which the front part of the fabric table tail (27a), which pivotally supports the roll (28) that engages with the cam (9), is slidably mounted in a groove provided in the barrel frame of the pistol-type device. (27), and the rear end of a cloth holding plate (29) is pivotally connected to a frame (27b) provided at the center of the cloth table. (iv) A joiner (J) is attached to the other end of the bending rod (31) which pivotally supports the roll (32) that engages with the cam (10) at one end.
is pivotally attached to the joiner, and the end of a hook rod (33) whose tip is formed into a hook (33c) is rotatably incorporated into the joiner, and the center portion of the hook rod is fitted into a cylindrical cam (34), and the hook rod is Loop (L_1) forming mechanism (v) cam (11) formed by engaging the protrusion (33b) attached to the cam groove (35) of the cam
A roll (36) that engages with is pivotally supported at the upper end, and a connecting rod (38) is connected to the center part of a short rod (37) whose lower end is the fulcrum (3) of the handle (2). A hook needle (43) with a connecting rod and a hook (44) and a bellow (45) at the tip
A chain seam butt binding device comprising: a latch needle mechanism formed by connecting the two through a thrust frame (39);