JPH08199446A - Weft selector in weaving machine - Google Patents

Abstract

PURPOSE: To provide a warp selector in which a solenoid and a hook are arranged so that they are vertically shifted from the neighboring solenoid and hook and overlapped, thus the arrangement density of warp selection units can be increased and the size of the selector can be miniaturized. CONSTITUTION: A solenoid 5 and hooks 6A, 6B which reciprocate according to the magnetization of the solenoid are vertically shifted from the neighboring solenoid and hook and overlapped. In warp selection units 23, 24, nails 60 of the hooks 6A, 6B face mutually in a reverse directions and the sucking direction of an armature 9 by the solenoid is also in the reverse direction. The total projected area of the warp selection units 23, 24 is almost equal to that of the single unit whereby the size of a weft selector can be prevented from becoming large.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for selecting warp threads for weaving patterns such as patterns and patterns in a loom.

[0002]

2. Description of the Related Art In a loom having a function of weaving patterns such as patterns and patterns, a warp selecting device represented by, for example, a jacquard machine is used to select a warp according to a woven pattern.

As such a warp selecting device, for example, Japanese Patent Laid-Open No. 3-90646 proposes a device for selecting a warp by utilizing an electromagnetic solenoid type actuator which operates by an electric signal.

This warp selection device is provided above the main body of the loom and includes a knife that moves up and down in conjunction with the operation cycle of the main body of the loom. Also, many warp threads consisting of a needle driven upward by a knife, a hook that holds the needle in a raised position, and an electromagnetic solenoid that swings the hook between a position that holds the needle and a position that releases the needle. A selection unit is provided. The needle is connected to the warp through various mechanisms, and when the hook is held in the raised position, the corresponding warp is selected, and when the needle is released from the hook and lowered, the warp is deselected.

The knife moves up and down in each cycle of the weaving operation of the loom body to raise the needle. When the solenoid is excited in the raised position of the needle, the hook engages the needle and the hook holds the needle in the raised position even after the knife is lowered.

On the other hand, if the solenoid is not energized, the hook will not engage the needle and the needle will descend with the knife.

Therefore, by selectively supplying the exciting current to the solenoid, it is possible to select only the necessary warp from among many warp candidates.

[0008]

PROBLEM TO BE SOLVED: To arrange as many warp selecting units as the number of candidate warp yarns adjacent to each other in two directions inside a selecting device. The number of such units is rapidly increasing, and the warp selection device is becoming huge, making it difficult to secure a space for arrangement.

The present invention has been made to solve the above problems, and an object of the present invention is to increase the arrangement density of units and prevent the warp selecting device from becoming huge.

[0010]

According to a first aspect of the present invention, there is provided a needle for selecting a warp thread used by a loom body according to an ascending / descending position,
A number of warp selection units each including a hook that holds the needle in a raised position, and a solenoid that displaces the hook between an engagement position with the needle and a release position according to an excitation state,
A warp selection for a loom that includes a transmission member that drives the needle upward by raising and lowering in synchronization with an operation cycle of the loom body, and selects a warp from a large number of candidates by selectively supplying an exciting current to the solenoid. In the apparatus, the solenoid and the hook are arranged so as to be vertically displaced and overlapped with respect to the adjacent solenoid and the hook.

According to a second aspect of the invention, in the first aspect of the invention, the solenoid and the hook are arranged so as to be vertically offset and overlap with another solenoid and the hook in the same warp selection unit.

According to a third aspect of the present invention, in the first aspect of the invention, the solenoid and the hook are arranged so as to be vertically displaced and overlapped with respect to the solenoid and the hook formed in another warp selection unit.

[0013]

According to the first aspect of the present invention, the adjacent solenoid and the hook are vertically shifted and overlapped with each other, whereby the area occupied by these members can be suppressed to a small size, and the warp selection units can be arranged at a high density.

According to the invention of claim 2, the solenoid and the hook in the same warp selection unit are vertically shifted and overlapped with each other to reduce the area occupied by the warp selection unit.

According to the invention of claim 3, the solenoids and the hooks in different warp yarn selection units are vertically shifted and overlapped with each other, so that the space can be shared between the warp yarn selection units.

[0016]

1 to 4 show an embodiment of the present invention.

FIG. 1 is an overall view of the loom. The warp selection device 2 disposed above the loom body 3 is provided with a shaft 34 that is interlocked with a main shaft 30 that drives the loom body 3.

As shown in FIG. 2, the shaft 34 is connected to knives 7A and 7B as driving members via a cam 31, an arm 32 and a link mechanism 33, and the knives 7A and 7B are cycled in the weaving operation of the loom body 3. Alternately move up and down in synchronization with.

As shown in FIG. 3, the knives 7A and 7B drive the needles 4A and 4B upward, respectively, when they are raised. Needle 4
Engagement openings 40 are formed at the upper ends of A and 4B, respectively.
In addition, at the lower end, the operation thread 22 in which a common pulley 21 is suspended
And the warp 8 is connected to the pulley 21. As a result, in a state where both the needles 4A and 4B are in the raised position, the warp yarn 8 is pulled up via the pulley 21 and is in the selected state. Further, when either one of the needles 4A and 4B is in the lowered position, the warp yarn 8 is not pulled up and is in a non-selected state. Since the knives 7A and 7B move up and down alternately, the needles 4A and 4B never move down.

A hook 6A is swingably supported by a hinge 13 above the knife 7A. Further, above the knife 7B, the hook 6B is swingably supported by the hinge 13 along with the hook 6A. The hooks 6A and 6B swing in response to the excitation of the solenoid 5 arranged above.

The driving of the hooks 6A and 6B by the solenoid 5 is performed via the mechanism shown in FIG.

The excited solenoid 5 is connected to the armature 9
Is sucked toward the yoke 10. The armature 9 has a hook 6A urged by a spring 12 above the hinge 13.
(6B) abuts. Therefore, the hook 6A (6B) is attached to the spring 1 by the attraction of the armature 9 to the yoke 10.
It swings against 2 and displaces the lower end claw 60 to the forward position. On the other hand, when the excitation of the solenoid 5 is stopped, the hook 6A (6B) swings while pushing back the armature 9 by the spring 12 and displaces the claw 60 to the retracted position.

At the raised position of the needle 4A (4B), the solenoid 5
Is excited, the hook 6A (6B) swings the claw 60 to the forward position, and causes the claw 60 to enter the engaging hole 40 of the needle 4A (4B). As a result, even after the knife 7A (7B) descends, the needle 4A (4B) remains in the raised position.

When the excitation of the solenoid 5 is stopped, the needle 4A
The hook 6A (6B) holding (4B) maintains that state, while the hook 6A (6B) not holding the needle 4A (4B) swings the claw 60 to the retracted position. If the needle 4A (4B) engaged with the hook 6A (6B) does not excite the solenoid 5 in the raised position in the next cycle, the hook 6A (6B) swings the pawl 60 to the retracted position. , Is released from the hook 6A (6B) and descends.

The hooks 6A and 6B swing according to the excitation state of the same solenoid 5. If one of the needles 4A and 4B is held in the raised position by the hook 6A or 6B,
Next, when the other one comes up, the warp 8 is pulled up through the pulley 21 and becomes in the selected state. If the hooks 60 of the hooks 6A and 6B are in the retracted position, the needles 4A and 4B
When one of them goes up, the other goes down, so that the warp 8 is not pulled up and is in a non-selected state. Therefore, only one solenoid 5 is required for the two hooks 6A and 6B, but the solenoid may be provided for each hook individually.

The supply and stop of the exciting current to each solenoid 5 is controlled by the controller 1 shown in FIG.

The needles 4A and 4B, the solenoid 5, and the hooks 6A and 6B form a warp selection unit 23.

Above the warp selection unit 23, a warp selection unit 24 having a similar structure is provided. The warp selection unit 24 includes needles 25A and 25B, a solenoid 5, and hooks 6A and 6B. Solenoid 5 and hook 6A
And 6B are exactly the same as those used for the warp selection unit 23.

The warp selection units 23 and 24 are arranged inside the same holder 20 so as to be vertically displaced and overlap each other.

That is, the warp selection unit 24 is arranged substantially directly above the warp selection unit 23. Further, both units are arranged so that the claws 60 of the hooks 6A (6B) face in opposite directions. Along with this, the suction direction of the armature 9 by the solenoid 5 is also reversed. By thus stacking the warp selection units 23 and 24 on top of each other, the total projected area of the warp selection units 23 and 24 becomes substantially the same as the projected area of a single unit.

Needles 25A and 25B of the warp selection unit 24
Is formed longer than the needles 4A and 4B of the warp selection unit 23 by an amount corresponding to the vertical distance between the units 23 and 24.

The warp selection device comprises a large number of pairs of warp selection units 23 and 24 constructed as described above.

Next, the operation will be described.

The operating principles of the units 23 and 24 are the same, and the corresponding warp yarns 8 are pulled up by the excitation of the solenoid 5 to bring them into the selected state.

Therefore, by energizing only the solenoid 5 corresponding to the warp 8 to be selected and not energizing the other solenoids 5, the warp can be arbitrarily selected from a large number of candidates.

Warp selection unit 23 in the same holder 20
Although the operations of the units 24 and 24 are performed independently, the units 23 and 24 are housed so as to be vertically shifted and overlapped with each other in the same holder 20, so that the substantial occupied area is one unit. There is almost no difference from the case of only 23 (24). Therefore, the occupied area of the warp selection unit is significantly reduced as compared with the conventional warp selection device in which the warp selection units are arranged in parallel, and the plane size of the warp selection device for satisfying the required number of units is small. Get smaller. In other words, since more warp selection units can be arranged under the same occupied area, it is possible to handle complicated weaving using a large number of warp threads 8.

In the above embodiment, the positions of the warp selection units 23 and 24 for driving different warp yarns 8 are vertically shifted and overlapped, but the hooks 6A and 6B in the same warp selection unit are separated. When driven by a solenoid, it is possible to shift the solenoid and the hook up and down and stack them in the same unit. In this case, the occupied area can be reduced in units.

[0038]

As described above, according to the first aspect of the invention, the solenoid and the hook are arranged so as to be vertically displaced and overlapped with respect to the adjacent solenoid and the hook.
The area occupied by the warp selection unit is greatly reduced, and the warp selection device is downsized. Further, since more warp selection units can be arranged under the same occupied area, it is possible to cope with weaving a complicated pattern in which a large number of warp threads are selectively used without enlarging the device.

According to the second aspect of the present invention, the solenoid and the hook in the same warp selection unit are vertically overlapped with each other, so that the area occupied by the warp selection unit can be reduced.

According to the third aspect of the present invention, the solenoids and hooks in different warp yarn selection units are vertically shifted and overlapped with each other, so that space can be shared between the warp yarn selection units.

Therefore, according to the present invention, the space occupied by the warp selecting device can be reduced and the device can be prevented from becoming huge due to the selection of many warp yarns.

[Brief description of drawings]

FIG. 1 is a side view of a loom equipped with a warp selection device according to the present invention.

FIG. 2 is a schematic side view of a warp selection device.

FIG. 3 is a longitudinal sectional view of a warp selection unit according to the present invention.

FIG. 4 is a vertical cross-sectional view of a main part of a warp selection unit viewed from a direction orthogonal to FIG.

[Explanation of symbols]

 2 Locking selection device 3 Loom body 4A, 4B, 25A, 25B Needle 5 Solenoid 6A, 6B Hook 23, 24 Warp selection unit

Claims (3)

[Claims] 1. A needle for selecting a warp to be used by a loom main body according to an ascending / descending position, a hook for holding the needle at an ascending position, and an engaging position and a releasing position of the hook with the needle depending on an excited state. And a transmission member for driving the needle upward by ascending / descending in synchronization with the operation cycle of the loom body, and selectively supplying an exciting current to the solenoid. In a warp selection device for a loom that selects a warp from a large number of candidates, the loom is arranged such that the solenoid and the hook are vertically displaced with respect to the adjacent solenoid and the hook, and are overlapped with each other. Warp selection device. 2. The warp selection device for a loom according to claim 1, wherein the solenoid and the hook are arranged so as to be vertically offset and overlap with another solenoid and the hook in the same warp selection unit. 3. The solenoid and the hook are arranged so as to be vertically displaced and overlapped with respect to the solenoid and the hook formed in another warp selection unit.
The warp selection device of the loom according to.