WO2017094943A1

WO2017094943A1 - Vertical full-rotation shuttle, stitches made by vertical full-rotation shuttle and stitch forming method

Info

Publication number: WO2017094943A1
Application number: PCT/KR2015/013254
Authority: WO
Inventors: 강소대
Original assignee: 주식회사 마이크로코어
Priority date: 2015-12-04
Filing date: 2015-12-04
Publication date: 2017-06-08
Also published as: JP2019501748A; US20180371660A1; CN108368658A

Abstract

The present invention relates to a vertical full-rotation shuttle, which leads a feed-side string portion of a needle thread loop to be wound around and hooked to a bobbin thread from one side of a bobbin case to the other side thereof according to the rotation of a hook part, and leads a stitch-side string portion of a needle thread to the surface of the bobbin case at one side of the bobbin case, such that the feed-side string portion of the needle thread turns the bobbin thread around and the needle thread loop jumps over the bobbin case so as to form complete stitches.

Description

Vertical Rotary Book, Stitches and Stitch Making Method

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vertical rotary drum equipped with a sewing machine and an embroidery machine that can be used to sew cloth, leather, and the like, and a stitch and a stitch manufacturing method made by the vertical rotary drum.

1 is a perspective view showing a vertical electric rotary book 1 of the prior art. The vertically-rotating drum 1 is attached to the outer drum 2 fixed to the drive shaft 5, the inner drum 3 accommodated in the outer drum 2, and detachably mounted in the inner drum 3. The bobbin chamber 7 includes a bobbin case 4 for storing and retaining the wound bobbin.

The drive shaft 5 is fixed to the base end 2a of the outer drum 2, and the outer drum 2 is driven to rotate around the rotation axis L1 by the drive shaft 5. On the outer circumference of the outer drum 2, a hook portion 6 for capturing the needle thread 10 inserted into the needle 11 is provided, and on the outer circumference than the hook portion 6, the outer drum 2 A seal guide 8 is provided along the outer circumference.

The inner drum 3 is stored in the outer drum 2 in a rotating material in a state where rotation due to the rotation of the outer drum 2 is blocked. The flange 12 is formed in the open end side of the inner drum 3, and the needle dropping hole 9 into which the needle 11 is inserted is formed in the base end 2a side of the outer drum 2 of this flange 12. do.

The needle 11 is reciprocated up and down via the needle dropping hole 9 substantially perpendicular to the rotation axis L1 of the outer drum 2. The outer drum 2, when viewed from the open end side of the outer drum 2, rotates to the left (turns counterclockwise) as shown by arrow A1, and rotates the outer drum 2 The hook portion 6 picks up the needle thread 10 toward the proximal end 2a side of the outer drum 2 with respect to the movement path of the needle 11, and the bobbin thread 7 and the needle thread 10 A stitch (nose) is formed.

FIG. 2: is a figure which shows typically the formation process of the oar when two pieces of

cloth

15 and 16 to be sewn advance sewing. 2, the outer drum 2 and the inner drum 3 are omitted. Each

fabric

15, 16 is sewn forward, that is, each

fabric

15, 16 is directed toward arrow B1, which is the same direction as the movement direction when the hook portion 6 picks up the needle thread 10. When conveyed and sealed, the needle thread 10 has a rotational direction of the outer drum 2 rather than the bobbin chamber 7 biased to the proximal end 2a of the outer drum 2, as shown in Fig. 2 (1). (A1) It is picked up by the hook part 6 on an upstream side. The needle thread 10 captured by the hook portion 6 forms a needle thread loop, and the supply side string portion 10a of the needle thread 10 accommodates the bobbin case 4 as the hook portion 6 rotates. It is guided between the inner drum 3 and the outer drum 2 to be wound around the inner drum 3, and the stitch-side thread portion 10b of the needle thread 10 is the open end side of the inner drum 3. Guided to the surface of the bobbin case (4) of the needle thread loop as shown in Fig. 2 (2).

In this way, the needle thread loop for skipping the thread is pulled upward by the supply side thread part 10a of the needle thread 10 by the unshown thread take-up provided on the upper side of the vertical rotation drum barrel 1, and the needle thread loop becomes smaller. As shown in FIG. 2 (3), the bobbin chamber 7 is wound up. The bobbin thread 7 and the needle thread 10 are wound around each other in the vicinity of the seams of the two

fabrics

15 and 16 by pulling the supply side thread portion 10a of the needle thread 10 further upward by the thread take-up. It is engaged to form a stitch. By repeating the process of forming such a series of stitches, as shown in Fig. 2 (4), a continuous complete stitch 18 is formed.

In the above-described vertically-rotating drum 1 of the prior art, the supply-side string portion 10a of the needle thread 10 includes an inner drum 3 for accommodating the bobbin case 4 in accordance with the rotation of the hook 6. It is guided so that it may be wound around the inner drum 3 between the outer drum 2, and the stitch side thread part 10b of the needle thread 10 is the surface of the bobbin case 4 of the open end side of the inner drum 3. When the needle thread loop is skipped over, the stitch-side thread portion 10b of the needle thread 10 turns around the bobbin thread 7 so that a stitch is formed and the completed stitch 18 is completed. There is a problem that the stitching quality is lowered because the stitches 18 do not become lock stitches.

In addition, in the above-described vertical forward rotation drum 1 of the prior art, as shown in FIG. 3, when the bobbin chamber 10 is stitched in the traveling direction, the needle chamber 10 is surrounded by the bobbin chamber 7. Ring-shaped stitches which can be opened by enclosing the coils from upstream to downstream, are formed successively, so that there is no portion of the needle thread 10 covering the bobbin thread 7 directly above each stitch, The bobbin thread 7 can come out between the loops of the needle thread 10, so that either the needle thread 10 or the bobbin thread 7 is broken or the bobbin thread as shown on the left side of FIG. When (7) is pulled in a tensioned state, there is a problem that the finished stitch is released.

The present invention, in order to solve the above problems, the supply side string portion of the needle thread loop is guided to be wound around the bobbin thread from one side of the bobbin case to the other side according to the rotation of the hook portion, the stitch side string portion of the needle thread bobbin case A vertical warp that is guided to the surface of the bobbin case on one side of the bobbin case so that the stitch-side string portion of the needle thread rotates around the bobbin thread so that the needle thread loop can jump about the bobbin case so that the completed stitch becomes a lock stitch. It is to provide a rotating drum.

Conventionally, the needle thread loop of the needle thread loop has rotated around the bobbin thread so that the needle thread loop has a rope skipping. However, according to the present invention, the supply thread of the needle thread loop rotates around the bobbin thread. Since the needle thread loops jump rope, the finished stitch becomes a lock stitch, and the effect of the uniform sewing can be obtained.

In addition, the present invention, when viewed in the advancing direction when the bobbin thread is stitched, ring-shaped stitches are formed so that the needle thread cannot be twisted open by surrounding the bobbin thread from the downstream side to the upstream side, thereby forming each bobbin thread. There is a portion of the needle thread covering just above the stitch, and the bobbin thread cannot be pinched out between the loops of the needle thread, so that either the needle thread or the bobbin thread is broken or the needle thread is pulled in a tensioned state. The complete stitch does not loosen.

1 is a perspective view showing a conventional vertical rotation book,

FIG. 2 is a diagram schematically illustrating a process of forming a stitch when sewing forward by using the vertical forward rotation book of FIG. 1;

3 is an enlarged view of the completed stitch of FIG. 2;

4 is a cross-sectional view showing a vertical rotational book of the present invention;

FIG. 5 is a perspective view illustrating a vertical electric rotation book of FIG. 4;

FIG. 6 is an exploded perspective view showing the vertical vertical bottom drum of FIG. 4;

FIG. 7 is a view schematically showing a process of forming a stitch when sewing forward by using the vertical rotating drum of FIG. 1;

8 is a view schematically showing the shape and the durability of the conventional complete stitch and the completed stitch of the present invention.

Hereinafter, the vertical rotation drum of the embodiment according to the present invention will be described in detail with reference to FIGS. 4 to 8.

In the following description, one side of the housing is a side adjacent to the power transmission rotation part in the rotational center axis direction of the power cutting rotation part, and the other side of the housing is a side not adjacent to the power transmission rotation part in the rotation center axis direction of the power cutting rotation part.

5 is a vertical cross-rotating drum of the present embodiment is shown in cross-sectional view.

The vertical rotating drum drum, as shown in Figure 4 to 6, the housing 100 is coupled to the main body of the sewing machine and embroidery machine; A power transmission rotating unit 200 fixedly circumscribed to a rotating shaft (not shown) provided in the main body of the sewing machine and the embroidery machine, and disposed on one side of the housing 100 to be rotatable about the central axis L of the rotating shaft; The jaw portion 150 formed at the center of the inner circumferential surface of the housing 100 is rotatably embedded in the housing 100 in a state in which the edge face facing the other direction of the housing 100 abuts, A hook body 300 extending in the other direction to be caught and rotated by the power transmission protrusion 210 formed in the power transmission rotation unit 200; On the other side of the housing 100 having a female portion 710 fitted to the male portion 120 formed on a portion of the inner peripheral surface of the other portion of the housing 100 is not rotatable with respect to the hook body 300. Bobbin case base 700 is inserted into the hook body 300 in one direction; A bobbin 400 rotatably inscribed in the bobbin case base 700; A cover 500 which is mounted to the bobbin case base 700 to be inscribed in the bobbin case base 700 and to be external to the bobbin 700; Hook body which is rotatably external to the hook body 300 in a state that is fixedly inscribed on one side inner circumferential surface of the housing 100 and prevents the hook body 300 from being separated in one direction of the housing 100. Release prevention ring 600; And it is in contact with the hook body 300 is rotatably external to the bobbin case base 700 in a state in which it is inscribed to the other inner peripheral surface of the housing 100 through which the needle chamber 36 can pass Fixed, the bobbin case base 700 includes a bobbin case base detachment prevention ring 800 to prevent the bobbin case base 700 from being separated in the other direction of the housing 100.

Therefore, the bobbin case base detachment prevention ring 800, the hook body 300 and the power transmission rotating unit 200 is to rotate around the rotation axis (L) together.

In addition, the housing 100 has a hole 110 formed at a portion of the periphery formed so that the needle 35 reciprocating up and down along the moving path perpendicularly intersecting the rotation axis L can enter the housing 100. .

In the hook body 300, a tapered hook portion 310 is formed at an outer circumference in a state in which an empty space circulating with the hole 110 is formed on the downstream side in the rotational direction, and the hook portion 310 is formed as described above. By the rotation of the power transmission rotating part 200, the needle thread 36 of the needle 35 which penetrated in front of the hook part 310 via the said hole 110 is captured.

The vertically-rotating drum drum configured as described above, the needle thread 36 of the needle 35 that is sent down while being passed through each fabric while the fabrics to be sewn are stacked on the through-hole 110 of FIG. 4. The hook body 310 is captured by the rotation of the power transmission rotating part 200 by the rotation of the bobbin case base 700 and the hook body through the gap between the bobbin case base release prevention ring 800 through the hook body ( Guided along one side outer circumferential surface 320 of 300, the rope skips around the bobbin case base 700, is wound around the bobbin chamber 34, and stitched on the through-hole 110 of FIG. To form.

FIG. 7 is a diagram schematically showing a process of forming a stitch when sewing two pieces of cloth forward by using the vertical rotation drum. FIG.

The needle thread 36 is supplied through a thread take-up not shown above, and the insertion through-hole of the needle 35 is provided on one side of the housing 100 (the front of FIG. 7) on the other side of the housing 100. It is inserted through the back) and leads to the upper surface of the upper fabric. The bobbin chamber 34 is led out of the bobbin case base 700, is guided to the other side of the housing 100 rather than the movement path of the hook portion 310, and guides to the underside of the lower fabric.

As shown in the far left of FIG. 7, when the needle 35 reciprocating up and down has descended, the hook portion 310 driven to rotate is disposed on the other side of the housing 100 than the needle 35. It catches while penetrating the loop of the needle thread 36 on the upstream side of the hook portion 310 in the rotational direction upstream of the bobbin thread 34, and forms the needle thread loop larger while pulling the needle thread loop, and the needle is rotated according to the rotation of the hook portion 310. The supply side string portion 36a of the thread 36 is led to the lower side of the hook body 300 and bobbin case base 700 on the other side of the housing 100, and the stitch side string portion 36b of the needle thread 36. ) Is passed over one side guide outer circumferential surface 320 of the hook body 300 and is led to one side 720 of the bobbin case base 700, so that the supply side row portion 36a of the needle thread 36 is the bobbin chamber 34. ), The needle thread loop causes a jump rope about the bobbin case base 700, as shown in the second left of FIG. It is virtualized.

While the needle thread loop skips the bobbin case base 700, the thread take-up pulls up the supply-side string portion 36a of the needle thread 36 so that the needle thread loop becomes smaller, as shown in the second right side of FIG. , The needle thread 36 is wound around the bobbin thread 34 and fitted. As the thread take-up further rises, as shown on the far right side of FIG. 7, the bobbin thread 34 and the needle thread 36 are wound around the seam of each fabric to be hooked to form a stitch. By repeating this series of formation of the ol, the two pieces of cloth are sewn by successive complete stitches 38.

Therefore, in the vertical rotation drum, the supply thread 36 of the needle thread 36 rotates around the bobbin thread 34 so that the needle thread loops to skip the rope, so that the finished stitch becomes a lock stitch, and the sewing quality is The effect of uniformity can be obtained.

In addition, in the present invention, as shown in the far right side of FIG. 7, the needle thread 36 moves around the bobbin chamber 34 from the downstream side to the upstream side when viewed in the advancing direction in which the bobbin chamber 34 is stitched. A ring-shaped stitch that cannot be enclosed and twisted open is formed, so that a portion of the needle thread 36 covering the bobbin thread 36 just above each stitch exists, so that the bobbin thread 34 is a needle thread. It is not possible to squeeze out between the loops of 36, so that either the needle thread 36 or the bobbin thread 34 is broken or pull the needle thread 36 in a tensioned state, as shown on the right side of FIG. If the complete stitch is not released.

Claims

The housing 100, the hook body 300, which is built in the housing 100 to be rotatable in the housing 100 to be driven around the axis of rotation perpendicular to the movement path of the needle to be reciprocated transfer, the hook body ( The bobbin case base 700 inserted into the hook body 300 and the bobbin case 34 wound around the bobbin case base 700 are rotatably attached to the hook body 300. Include,

The hook body 300 is provided with a hook portion 310,

The hook portion 310 is disposed on the other side of the housing 100 than the needle 35 and captured while penetrating the loop of the needle chamber 36 upstream of the hook portion 310 in the rotational direction upstream of the bobbin chamber 34. And the supply thread portion 36a of the needle thread 36 is wound around the bobbin chamber 34 so that the needle thread loop is roped with respect to the bobbin case base 700.
The method of claim 1,

Hook body which is rotatably external to the hook body 300 in a state that is fixedly inscribed on one side inner circumferential surface of the housing 100 and prevents the hook body 300 from being separated in one direction of the housing 100. Drop prevention ring (600) and

In the state fixedly inscribed to the other inner circumferential surface of the housing 100 has a gap through which the needle chamber 36 can pass through the bobbin case base 700 is rotatably externally contacted to the hook body 300 By fixing, the bobbin case base 700 further comprises a bobbin case base departure prevention ring 800 to prevent the departure in the other direction of the housing 100, vertically rotating drum.
Stitches are formed using a needle thread of a needle provided in a sewing machine or an embroidery machine, and a bobbin thread provided in a vertical rotation drum, and when viewed from the direction in which the bobbin thread is stitched, the needle thread surrounds the bobbin thread. A stitch characterized in that a ring-shaped stitch is formed by enclosing and staggering from the downstream side to the upstream side.
In the method of stitching to the stitching object using a needle thread wound on a needle thread bobbin provided in a sewing machine or an embroidery machine and a bobbin thread of a bobbin case base built in a vertical turning drum;

When the needle reciprocating up and down has descended, capturing while penetrating the loop of the needle thread before the bobbin thread, forming the needle thread loop to be larger,

The supply line of the needle thread rotates around the bobbin thread so that the loop of the needle thread jumps about the bobbin case base;

Pulling up the supply line of the needle thread 36 to make the needle thread loop smaller, so that the needle thread is wound around the bobbin thread and fitted;

And further pulling up the feed side of the needle thread so that the bobbin thread and the needle thread are wound around the seam near the seam of the object to be stitched.