JPH0619587Y2 - Thread cutting tool for embroidery machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is intended to solve the following problems.

(Field of Industrial Application) This invention is a thread for an embroidery machine for cutting the entangled thread passed between the cloth attached to the embroidery frame on the table of the embroidery machine and the needle hole of the embroidery machine table. It concerns a cutting tool.

(Prior Art) Generally, in an embroidery machine, when the upper thread is wound around the hook stopper during operation, a large number of upper threads (called entangled threads) straddle between the cloth and the hook, making it impossible to embroider. Therefore, when the upper thread is wound around the hook stopper, the operation of the embroidery sewing machine is stopped, but if the stop is delayed, the number of windings of the upper thread around the hook stopper will increase and the entanglement thread that straddles between the cloth and the hook The number of needles increases, which causes a situation in which the entangled thread is clogged in the needle hole of the needle plate. If a large number of entangled threads straddle between the cloth and the hook as described above, it is necessary to immediately cut the entangled threads to remove them from the needle hole or hook stopper, and then restart the embroidery machine. is there.

(Problems to be solved by the invention) Therefore, conventionally, a knife is provided below the needle plate (see, for example, Japanese Utility Model Publication No. 45-13637) to cut the thread between the shuttle and the needle hole. Therefore, it is possible to cut the dangling entangled yarn with this, so it is possible to cut the dango shaped entangled yarn with this, then lift the cloth upward and pull the long entangled yarn from the needle hole. It was thought that it could be pulled out upwards. However, as is well known, the embroidery sewing machine is spatially extremely narrow near the shuttle, so it is extremely difficult to cut it with a knife equipped with entanglement threads or other nips as described above, and it takes a lot of time. Therefore, there is a problem that the embroidering machine stops for a long time. In addition, there is also a problem that it takes a lot of time to remove the long leg.

The present invention eliminates the above-mentioned conventional problems, and embroiders a machine in which the entangled yarn that straddles between the cloth and the shuttle can be cut on the table, that is, immediately below the cloth, with a short leg length and in a short time. It is intended to provide a yarn cutting tool.

The structure of the present invention is as follows.

(Means for Solving the Problems) The present invention comprises a cloth placed on the table of an embroidery machine and attached to the embroidery window of an embroidery frame having an embroidery window, and a hook below the needle hole of the table. In a thread cutting tool for an embroidery machine for cutting entangled threads generated between
The thread cutting tool has a length longer than the distance between the needle hole and the front edge of the embroidery frame in the state where the embroidery frame is located at the forward end, and the thickness is entangled on the table and the table. It is set thin so that it can be inserted between the embroidery frame that is tightly attached to the table and has a continuous string of threads.
The tip part is provided with a sideways hook part for hooking the entanglement thread existing between the cloth on the table and the needle hole in the inserted state along the table top surface, and inside the hook part, above the table top surface A blade portion is provided so that the portion of the entangled yarn that is exposed and close to the cloth can be cut short, and at the base portion, the tip side is between the table and the embroidery frame. Even when the embroidery frame is positioned at the forward end in a state where the hook portion is inserted and the hook portion is opposed to the needle hole, a handle portion for manual operation is provided at a position protruding outward.

(Operation) When removing the entangled thread that straddles between the cloth and the hook, hold the handle and insert itself from the front into the gap between the lower surface of the embroidery frame and the upper surface of the table, and remove the hook from the cloth. The entangled yarn is hooked on the entangled yarn along the lower surface, and then the handle is moved back and forth to cut the entangled yarn shortly near the lower face of the cloth by the blade portion of the hook.

(Embodiment) A drawing showing an embodiment of the present application will be described below. In FIG. 2, reference numeral 1 is a table of a multi-head embroidery machine, which is fixed to a machine frame as is well known. Reference numeral 2 denotes an embroidery sewing machine mounted on the table 1, and a plurality of embroidery sewing machines are arranged side by side at predetermined intervals. In the embroidery sewing machine 2, 10 is a bed and 11
Is a needle plate having a needle hole 12, and as shown in FIG.
Fastened to. Reference numeral 13 denotes a needle which is supported above and below the needle plate 11 so as to be able to move up and down, and has an insertion hole (not shown) for passing the upper thread a. 15 is a drive shaft for driving the hook, which is a bed
It is rotatably supported by a bearing 16 provided on the shaft 10.
Numeral 17 is a known hook attached to the drive shaft 15 below the needle plate 11, and has a hook stopper 18 as shown in FIG.

Next, 3 is an embroidery frame which is arranged on the upper side of the table 1 so as to be movable back and forth and left and right with a slight gap. As is well known, the front frame member 20, the rear frame member 21 and the left and right lateral frames are arranged. The frame members 22 and 23 are framed and configured. For the movement of the embroidery frame 3, for example, a roller provided in the embroidery frame 3 is guided movably in the left and right directions on a slide rail that is moved in the front-rear direction as disclosed in Japanese Utility Model Laid-Open No. 61-220796. I am allowed to do it. As shown in FIG. 5, each of the frame members 20, 21, 22, 23 of the embroidery frame 3 is provided with a fitting portion 24a having an Ω cross section and a cover frame 24b, and a cloth 25 is sandwiched between them. There is. 26 is a felt fixed to the lower surface of the front and rear frame members 20 and 21,
As shown in FIG. 3, it is slidably mounted on the upper surface of the table 1 to form a slight gap H (for example, about 2 mm) between the embroidery frame 3 and the table 1.

Next, 4 is a thread cutting tool for cutting the entangled thread 27 straddling between the cloth 25 attached to the embroidery frame 3 and the shuttle 17, and is constructed as shown in FIG. In the thread cutting tool 4, 30 is a long and thin metal body, and its length L is longer than the distance S between the needle hole 12 and the front edge of the table 1. The size (for example, 1 m) is set, and the thickness is set to be smaller than the gap H between the table 1 and the embroidery frame 3 (for example, 0.5 mm). The width B of the main body 30 is set to 15 mm, for example. Reference numeral 31 is a hook portion provided at one end of the main body 30 and is formed by the concave portion 31a, but may be provided so as to project laterally from the main body 30. Reference numeral 32 denotes a blade portion provided on the inner surface of the hook portion 31, which is formed as shown in FIG. Reference numeral 33 denotes a grip portion provided on the base portion of the main body 30. As shown in FIG. 5, the main body 30 is inserted between the upper surface of the table 1 and the lower surface of the embroidery frame 3 from the front side, and the hook portion 31 is opened. Even if the front side frame member 20 of the embroidery frame 3 is advanced to the front side edge portion of the table 1 in the state of facing the table 12, it is provided in a portion projecting forward from it. Reference numeral 34 is a thread pressing portion provided at the other end of the main body 30.
The thread pressing section may be thread pressing sections 34a, 34b, 34c having the shapes shown in FIGS. 10 (a), (b) and (c). Figure 10 (C)
In 35, 35 is a thread hooking portion, which can be hooked and pulled by the entangled thread, and the thread jammed in the needle hole 12 can be easily pulled out.

In the above-described structure, after the cloth 25 is attached to the embroidery frame 3, the embroidery frame 3 is moved back and forth, left and right, and the embroidery sewing machine 2 is operated to perform predetermined embroidery sewing on the cloth 25. You can If the upper thread a is wrapped around the hook stopper for some reason during the embroidery sewing operation, as shown in FIG.
A large number of entangled threads 27 straddle the needle hole 12 between the hook 25 and the hook stopper 18, and the embroidery on the cloth 25 is performed at the same position to form a dumpling. When the embroidery sewing becomes a dumpling as described above, the operation of the embroidery machine is temporarily stopped, and the entangled yarn 27 is removed as follows. First, as shown in FIGS. 2 and 5, holding the handle portion 33 of the thread cutting tool 4, insert the end portion of the main body 30 on the hook portion 31 side from the front between the table 1 and the embroidery frame 3,
As shown in FIG. 6, the hook portion 31 of the main body 30 is hooked on the entangled thread 27 that extends between the cloth 25 and the needle hole 12. Next, the main body 30 is pulled forward, and the entangled yarn 27 is cut by the blade portion 32 of the hook portion 31 as shown in FIG. Next, the thread cutting tool 4 is pulled out between the table 1 and the embroidery frame 3, and this time, as shown in FIG.
And the entangled yarn 27 that extends between the needle hole 12 and the hook stopper 18 is pushed by the yarn pushing portion 34 of the main body 30. As a result, as shown in FIG. 9, the entangled yarn 27 comes out of the needle hole 12 and comes off the hook stopper 18 to be dropped and removed. After that, the embroidery machine is restarted to perform embroidery work. The thread pressing section 34 may be omitted and the entangled thread may be pressed by a driver or the like.

(Effect of the Invention) As described above, according to the present invention, the upper thread a of the embroidery sewing machine 2 is wound around the hook stopper 18 during operation of the embroidery machine and a large number of entanglements are formed between the cloth 25 and the needle hole 12. When the thread 27 is generated, after stopping the operation of the embroidery machine, the grip portion of the thread cutting tool 4 is stopped.
Holding 33, insert the leading end side of the thread cutting tool 4 into the gap between the upper surface of the table 1 and the lower surface of the embroidery frame 3 from the front, hook the hook portion 31 of itself into the entanglement thread 27 and entangle it. yarn
There is a feature that 27 can be cut short by the blade portion 32 near the bottom surface of the cloth. As a result, the entanglement yarn 27 between the cloth 25 and the needle hole 12 can be simply and quickly removed without jumping up the embroidery frame 3, and the embroidery machine can be restarted quickly, and the operating rate of the embroidery machine can be increased. it can. In addition, since the short leg on the lower surface of the cloth is easier to remove than before.

Further, as described above, even if the entangled yarn 27 between the lower side of the cloth 25 and the upper side of the needle hole 12 can be cut into short staples, the configuration of the yarn cutting tool 4 is Since it can be formed of a long thin plate material, it has an effect that it can be manufactured at extremely low cost.

[Brief description of drawings]

The drawings show the embodiments of the present application. Fig. 1 is a plan view of a thread cutting tool, Fig. 2 is a schematic plan view of an embroidery machine, and Fig. 3 is III-II.
I line enlarged sectional view, FIG. 4 is an IV-IV line enlarged sectional view, FIG. 5 is a VV line enlarged sectional view, and FIGS. 6 to 9 are explanatory views showing the thread cutting operation in order, and FIG. FIG. 1 ... table, 2 ... embroidery sewing machine, 3 ... embroidery frame, 4
...... Thread cutting tool, 11 ...... Needle plate, 12 ...... Needle hole, 18 ...... Hook stopper, 25 ...... Cloth, 27 ...... Entangled thread, 31 ...... Hook part, 32 ...... Blade part, 33 ...... Handle part.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A tangled thread generated between a cloth placed on a table of an embroidery machine and attached to an embroidery window of an embroidery frame having an embroidery window, and a hook below a needle hole of the table. In the thread cutting tool for embroidery machine, the length of the thread cutting tool is longer than the distance between the needle hole and the front edge of the embroidery frame with the embroidery frame at the forward end. Is set to be thin so that it can be inserted between the table and an embroidery frame that is tightly attached to the table and has a string of entwined yarns stretched on the table. In the state, it is equipped with a sideways hook for hooking the entwined thread existing between the cloth on the table and the needle hole, and the inside of the hook is the cloth of the entangled thread exposed above the table upper surface. There is a blade part that allows you to cut the near part short In the state where the tip side is inserted between the table and the bottom of the embroidery frame so that the hook portion faces the needle hole, even if the embroidery frame is positioned at the forward end, it protrudes outward. A thread cutting tool for an embroidery machine, characterized in that a handle portion for manual operation is provided at a position to be operated.