JPH0680229B2 - Looper mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a looper mechanism for shaping a pile in a tufting machine.

[0002]

2. Description of the Related Art The looper of a tufting machine usually has only a single function. For example, those forming the same loop pile have only that function, and if the length of the loop is to be changed, another looper must be replaced.

The same applies when a cut pile is formed.

[0004]

In recent years, however, a tufted carpet having different pile heights or a mixture of loop pile and cut pile has appeared.

It is extremely inefficient if several tufting steps are required to manufacture such a carpet.

[0006] Therefore, for example, Japanese Utility Model Laid-Open No. 58-110093.
The publication discloses a pile forming mechanism capable of forming a cut pile and a loop pile with the same looper.

However, the above-mentioned mechanism forms a cut pile or a loop pile depending on whether the tip of the loop is held between the hook of the looper and the protrusion of the leaf spring. , The operation is very unstable.

Also, large and small cut piles cannot be formed.

An object of the present invention is to make it possible to form a cut pile and a loop pile by the same mechanism, and also to form large and small cut piles.

[0010]

In order to solve the above-mentioned problems, a first invention is a looper mechanism comprising a fixed looper and a movable looper slidable along the advancing / retreating direction. First and second blades extending vertically in parallel with each other and having hooks at the tips thereof are provided, and the movable looper has a gate hook at the tips and slides while overlapping with the first blades. Third
When the movable looper is in the retracted position, the hook of the first blade protrudes from the tip of the third blade, and the gate hook of the third blade and the tip of the second blade contact each other. However, when the movable looper is in the forward position, the hook of the first blade is hidden by the third blade, and
The gate hook tip of the blade and the tip of the second blade are opened so as to have a constant gap.

A second invention is a looper mechanism comprising a fixed looper and a movable looper slidable in the advancing / retreating direction, wherein the fixed looper is provided with a first blade having a gate hook at a tip thereof. The movable looper is provided with second and third blades that extend vertically in parallel at a constant interval and have hooks at their tips, and the first blade and the second blade are arranged so as to overlap each other. When the movable looper is in the position, the hook of the second blade projects from the tip of the first blade, and the tip of the gate hook of the first blade contacts the tip of the third blade, When the movable looper is in the retracted position, the hook of the second blade retracts from the tip of the first blade, and the gate hook of the first blade. The tip of the third blade is opened, characterized in that to have a constant gap.

[0012]

[Operation] As described above, the upper two parts that slide on top of each other
Each blade has a gate hook on one side and a normal hook on the other side. When the normal hook protrudes from the tip of the blade having the gate hook, the gate hook and the tip of the lower blade come into contact and close. Therefore, large and small loops can be formed by the normal hook or the hook of the lower blade, and when the tip of the upper blade having the normal hook recedes from the tip of the blade having the gate hook, the tip of the gate hook And the tip of the lower blade opens and a certain gap is created, so you can capture the loop yarn with the gate hook and form a loop,
In addition, a space is formed between the gate hook and the lower blade to prevent the loop yarn from coming off, which is suitable for making a cut pile.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the looper mechanism 1 of the present invention comprises a fixed looper 2 fixed to a looper operating bracket (not shown), an air cylinder attached to the bracket, and the like. On the other hand, the movable looper 3 is capable of advancing and retracting in its length direction.

The central plate-shaped portion 4 of the movable looper 3 has
A slit 5 for advancing and retracting is provided, and a pin 7 provided on the central plate-shaped portion 6 of the fixed looper 2 is fitted into the slit 5, and in that state, the movable looper 3
The lower edge of the central plate-shaped portion 4 comes into contact with the guide 8 and can slide back and forth.

A first blade 9 and a second blade 10 parallel to and slightly shorter than the central plate 6 of the fixed looper 2 extend forward, and hooks 11 and 11 are provided at the tips of the blades. 12 are provided.

The central plate-shaped portion 4 of the movable looper 3
A third blade 13 extends from the front to the front, and a gate hook 14 is provided at the tip of this blade. As shown in FIG. 2, when the movable looper 3 is in the retracted position, the gate hook 14 abuts on the tip end portion of the second blade 10 of the fixed looper 2 to cause the first blade 9 and the second blade 9 to contact each other.
The U-shaped space 15 (see FIG. 1) formed by the blade 10 is closed.

3 and 4 show another embodiment of the present invention.

As shown in the figure, a first blade 13a extends forward from the central plate portion 6a of the fixed looper 2a, and a gate hook 14a is provided at the tip thereof. Further, the plate portion 6a is provided with a pin 7a and a guide 8a.

The central plate-shaped portion 4a of the movable looper 3a
From there, a second blade 9a and a third blade 10a, which is parallel to and slightly shorter than the second blade 9a, extend, and hooks 11a and 12a are provided at the tips of the respective blades. Further, the plate-shaped portion 4a is provided with a slit 5a.

Gate hook 14 of the fixed looper 2a
a is the third blade 10a of the movable looper 3a when the movable looper 3a is in the forward position as shown in FIG.
It comes into contact with the tip of the blade to close the U-shaped space 15a (see FIG. 3) formed by the second blade 9a and the third blade 10a.

Next, the operation of the looper mechanism 1 will be described with reference to FIGS.

As shown in FIG. 5, when the air cylinder A is operated to retract the movable looper 3, the gate hook 14 is moved.
The space 15 is closed by this, and the hook 11 of the fixed looper 2 slightly projects.

Then, the fixed looper 2 is advanced and retracted by a bracket (not shown) so that the pile yarn C pierced by the needle D on the base fabric B is hooked by the hook 14, so that the loop pile E is formed.

As shown in FIG. 6, when forming the cut pile F, the movable looper 3 is advanced so that the hook 11 is covered by the third blade 13 of the movable looper 3 as shown by the chain line, The tip of the hook 14 and the tip of the second blade 10 of the fixed looper 2 open,
There is a certain gap.

Therefore, when the piercing depth of the needle D is controlled so that the pile yarn C enters into the space 15 through the gap, the captured pile yarn C is held by the gate hook 14 without being detached from the blade 13. To be done. Then, when the knife G is operated to cut the loop, the cut pile F is formed.

Further, as shown in FIG. 5, the piercing depth of the needle D is increased while the space 15 is closed by the gate hook 14, and as shown in FIG. 7, the pile yarn is hooked by the hook 12 of the second blade 10. When C is captured, a large cut pile H is formed.

Since the operation of the looper mechanism shown in FIGS. 3 and 4 is almost the same, the description thereof will be omitted.

[0029]

According to the present invention, as described above, the looper mechanism is constituted by the movable looper and the fixed looper, and one of the loopers is provided with two blades, and the other looper is made into one blade, By moving the movable looper back and forth, small loop piles and large and small cut piles can be formed, so it is possible to weave tufted carpets with complicated patterns with one looper mechanism, and with a simple mechanism cost burden Is few.

[Brief description of drawings]

FIG. 1 is an exploded plan view showing an embodiment of a looper mechanism.

FIG. 2 is an assembly plan view of the above.

FIG. 3 is an exploded plan view showing another embodiment of the looper mechanism.

FIG. 4 is an assembly plan view of the same as above.

FIG. 5 is a plan view showing the operation of the looper mechanism.

FIG. 6 is a plan view showing the operation of the looper mechanism.

FIG. 7 is a plan view showing the operation of the looper mechanism.

[Explanation of symbols]

 1 looper mechanism 2, 2a fixed looper 3, 3a movable looper 5, 5a slit 7, 7a pin 8, 8a guide 9, 9a, 10, 10a, 13, 13a blade 11, 11a, 12, 12a hook 14, 14a gate hook

Claims (2)

[Claims] 1. A fixed looper and a movable looper slidable along the advancing / retracting direction, wherein the fixed looper has first and second hooks extending in parallel vertically at a certain interval and having a hook at a tip thereof. 2 blades are provided, the movable looper is provided with a third blade that has a gate hook at the tip and slides while overlapping with the first blade, and when the movable looper is in the retracted position, When the hook of the first blade projects from the tip of the third blade, the gate hook of the third blade and the tip of the second blade contact each other, and the movable looper is in the forward position, the first loop The hook of the blade is concealed by the third blade, and the tip of the gate hook of the third blade and the tip of the second blade are opened to have a certain gap. A looper mechanism that is characterized. 2. A fixed looper and a movable looper slidable along the advancing / retreating direction.
A first blade having a gate hook is provided at a tip thereof, and the movable looper is provided with second and third blades having a hook at a tip thereof extending vertically in parallel at a constant interval. The first blade and the second blade are arranged so as to overlap with each other, and when the movable looper is in the forward position, the hook of the second blade protrudes from the tip of the first blade and the gate hook of the first blade. The tip of the blade contacts the tip of the third blade,
When the movable looper is in the retracted position, the second loop
The hook of the blade is retracted from the tip of the first blade, and the gate hook of the first blade and the tip of the third blade are opened to have a constant gap.