JP3242986B2 - Warp selection device for looms - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for selecting a warp thread for weaving a pattern or pattern on a weed loom.

[0002]

2. Description of the Related Art A weaving loom is generally provided with a warp selection device (Jacquard) for selecting a warp above a loom main body in order to weave a pattern or pattern. For example, as shown in FIG. 4, the jacquard includes a substantially U-shaped vertical needle 1 having an upper and lower rod 10 connected downward through a thread 6 and a knife 2 that slides up and down. By selectively engaging the hook 3 formed at the upper end of the vertical needle 1,
It is configured such that only a specific vertical needle 1 is pulled up.

When the vertical needle 1 is pulled up, the lower heald needle 11 is pulled up via the thread 6 and the upper and lower rods 10,
The pusher 12 that slides in the horizontal direction slides below the heald needle 11. Therefore, the heald needle 1
The warp 13 supported at one end does not move.

On the other hand, if the vertical needle 1 is not lifted, the pusher 12 which slides in the horizontal direction pushes the heald needle 11 to displace it in the horizontal direction, and pushes the warp thread 13 supported on the end of the heald needle 11 in the horizontal direction. Make a mouthpiece.

In order to selectively engage the hook 3 with the knife 2, the jacquard drives a horizontal needle 4 which engages each vertical needle 1 below the hook 3 and drives the horizontal needle 4 in the horizontal direction. The actuator 5 is provided.

When the actuator 5 drives the horizontal needle 4 rightward in the figure, the vertical needle 1 tilts the hook 3 away from above the knife 2 to prevent the knife 2 from lifting the vertical needle 1.

When the actuator 5 does not drive the horizontal needle 4, the ascending knife 2 engages with the hook 7,
The vertical needle 1 is raised.

By selectively driving the actuator 5 in this manner, the warp yarn 1 corresponding to the pattern or pattern to be woven is formed.
3 is selected.

[0009]

In the jacquard as described above, since it is essential to connect the vertical needle 1 and the upper and lower rods 10 with the thread 6, the jacquard is raised by the length of the thread 6. And the height of the loom is significantly increased. Therefore, this problem is to be solved by eliminating the thread 6 and directly raising the upper and lower rods 10 selectively.

In order to directly and selectively lift the upper and lower rods 10, it is necessary to arrange the vertical needles 1, the horizontal needles 4 and the actuators 5 at the same pitch as the upper and lower rods 10.

For this purpose, the size of the actuator 5 must be extremely reduced. However, if the size of the actuator 5 is reduced, the driving force is reduced, and the horizontal needle 4 cannot be operated by itself.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and realizes the miniaturization of the actuator by using the actuator only for holding the shifted horizontal needle, thereby achieving the miniaturization of the Jacquard loom. With the goal.

[0013]

According to the present invention, there is provided a vertical needle having a hook formed at an upper end, a knife which slides up and down to push up the hook, and a vertical needle which is pushed by a sliding knife to tilt the horizontal needle in a horizontal direction. The protrusion formed on the vertical needle so that the horizontal needle engages with the vertical needle and moves in the horizontal direction, and is rotationally displaced by the excitation polarity of the solenoid that is excited according to the energization,
An actuator for abutting the base end of the horizontally moved horizontal needle to hold the horizontal needle at the displacement position.

[0014]

The sliding knife causes the vertical needle and the horizontal needle to horizontally stroke through the projection. When the actuator abuts the proximal end of the cross needle, the cross needle is prevented from returning to its original position by the spring action of the vertical needle, thereby holding the vertical needle with the hook away from the knife. Thus, the rising knife does not engage the hook and the vertical needle is not pulled up by the knife.

On the other hand, when the actuator is displaced and does not abut against the base end of the horizontal needle, when the knife passes through the protrusion, the horizontal needle returns to the original position by the spring action of the vertical needle together with the vertical needle. Then, the rising knife engages the hook and raises the vertical needle.

Since the solenoid only rotates the actuator and does not directly drive the horizontal needle, the solenoid can be reduced in size.

[0017]

1 to 3 show an embodiment of the present invention. In addition,
The same components as those in the conventional example are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 1, the vertical needle 1 is formed in a substantially U shape having two parallel shafts extending in the vertical direction, and has a hook 3 at the upper end on the knife 2 side.

The warp needle 1 is restricted inside two rod-shaped guides 6 fixed to the body of the warp yarn selecting device in a direction perpendicular to the warp needle 1.

A projection 7 is formed below the hook 3 of the vertical needle 1. The protrusion 7 has an upward tapered surface, and the knife 2 that slides up and down presses the tapered surface, whereby the vertical needle 1 tilts the left axis to the right in the drawing, that is, the hook 3 is moved from above the knife 2. Displaces away.

Below the guide 6, the horizontal needle 4 is perpendicular to the vertical needle 1.
Is arranged. The horizontal needle 4 is supported by a guide 8 fixed to the body of the vertical needle selection device so as to be freely displaceable in the horizontal direction, and a locking portion 4A formed by bending and turning an intermediate portion is provided with the vertical needle 1 shown in FIG.
To the left shaft of

An actuator 14 which is rotated and displaced by the excitation of the solenoid 9 in order to hold the horizontal needle 4 at the displaced position is rotatably supported on a vertical shaft 15 as a fulcrum.

As shown in FIG. 2, the actuator 14 includes two parallel iron pieces 16 protruding toward the solenoid 9 and a permanent magnet 17 sandwiched therebetween, and the excited state of the solenoid 9 (a). Then, depending on the polarity, the position of FIG.
, And abut on the base end of the horizontal needle 4. Further, in the excited state (b) of the solenoid 9, the end is rotated from the position (a) to the position (b) where the tip is rotated. The structure of the actuator 14 is disclosed in Japanese Patent Application Laid-Open No. 3-9064.
No. 5 known.

An upper and lower rod 10 is directly connected to the lower end of the vertical needle 1, and a warp thread 13 is selected by the upper and lower rod 10, a heald needle 11 and a pusher 12, which are configured in the same manner as in the conventional example.

Next, the operation will be described.

In this warp selection device, the knife 2 is driven up and down at a constant speed. When the knife 2 descends from the position shown in FIG. 1, the left shaft of the vertical needle 1 shown in FIG. 1 tilts rightward due to the sliding between the tapered surface of the projection 7 and the knife 2, and the horizontal needle 4 is horizontally displaced in the same direction.

By energizing the solenoid 9 in this state, when the magnetic polarity of the excited solenoid 9 changes, the actuator 14 rotates from the position (b) of FIG. 1 to the position (a).
When the knife 2 turns the sliding direction upward, the vertical needle 1 attempts to return to the original state from the tilted state by the action of the spring, and the horizontal needle 4 also attempts to return to the left in FIG. However, the actuator 14 contacts the proximal end of the horizontal needle 4 to prevent the horizontal needle 4 from returning to its original position, and the vertical needle 1 is also held in a state where the hook 3 is tilted rightward in the drawing. You.

For this reason, the rising knife 2 rises without engaging with the hook 3 at the upper end of the vertical needle 1, and the heald needle 11 does not rise as shown by the solid line in FIG. Pushed by the pusher 12 which slides in the direction, the warp 13 is driven rightward in the drawing.

On the other hand, when the polarity of the solenoid 9 does not change, the actuator 14 remains at the position (b) and does not restrict the return of the horizontal needle 4. Accordingly, when the knife 2 starts to move upward, the vertical needle 1 returns the hook 3 to above the knife 2, and accordingly, the horizontal needle 4 also returns to the original position along the guide 8.

In this case, the ascending knife 2 engages with the hook 3 to lift the vertical needle 1 and raises one end of the heald needle 11 upward as shown by the chain line in FIG. As a result, the pusher 12 that slides in the horizontal direction enters the lower side of the heald needle 11 and does not come into contact with the heald needle 11, so that the warp 13 remains as it is.

In this manner, the warp 13 can be arbitrarily selected according to the polarity of the solenoid 9. Since the solenoid 9 does not directly drive the horizontal needle 4 but only rotates and rotates the lightweight actuator 14, it requires only a small amount of power and can be made compact. Therefore, the shape of the warp selecting device using many solenoids 9 can be made compact.

In this embodiment, the vertical needle 1 and the upper and lower rods 10 are directly connected without passing through a thread. However, this is because the solenoid 9 is small, and as shown in FIG. Is arranged at the same narrow pitch as the vertical needle 1 and the upper and lower rods 10. As a result, the height of the warp selection device can also be reduced by an amount corresponding to the thread passing.

[0033]

As described above, according to the present invention, since the vertical needle is provided with the projection which comes into sliding contact with the knife and the actuator which is rotated by the magnetic force of the solenoid and abuts on the base end of the horizontal needle at the displacement position, The horizontal needle can be driven by a part of the sliding force of the knife, and the solenoid does not need to directly drive the horizontal needle, only by rotating and displacing the lightweight actuator by changing the excitation polarity of the solenoid.

Therefore, a small solenoid can be used, and a favorable effect can be obtained in reducing the size of the entire apparatus.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a warp yarn selecting device according to an embodiment of the present invention.

FIG. 2 is a plan view of an actuator and a solenoid.

FIG. 3 is a perspective view of a main part of a warp selection device.

FIG. 4 is a schematic vertical sectional view of a weaving loom showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical needle 2 Knife 3 Hook 4 Horizontal needle 7 Projection 9 Solenoid 14 Actuator

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D03C 3/20 D03D 47/39

Claims (1)

(57) [Claims] 1. A vertical needle formed with a hook at an upper end, a knife which slides up and down to push up the hook, and a vertical needle which is pushed by a sliding knife to drive the vertical needle horizontally. The horizontal needle displaced in the horizontal direction integrally with the vertical needle, and the horizontal needle displaced by the magnetic force of the solenoid that is excited in response to the energization. A warp selection device for a weaving loom, comprising an actuator for holding in a moving direction.