JP2001329445A - Needle selector for jacquard machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a needle selector for a jacquard machine excellent in durability, reliability of needle selection (certainty of shedding motion) and resistance to deformation under load. SOLUTION: This needle selector for the jacquard machine is equipped with a carrier 13 which fastens plural hooks 20 and reciprocates, and further with plural hook selecting members 5 of which the each is located in a traveling direction of the carrier 13 and can swing between a position A where the hook selecting member advances to a path P of the hook 20 and another position B where the hook selecting member escapes from the path P of the hook 20, wherein at least an upper part 20a of the hook 20 is formed so flexibly that the hook 20 can bend when the hook contacts with the needle selector 5 which advances to the path P of the hook 20, and further a fastener 17 which can fasten a barb 23 of the hook 20 is arranged so that the hook 20 changes its relative position to the carrier 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle selection device for a jacquard machine, which is a warp shedding device for a loom.

[0002]

2. Description of the Related Art Conventionally, a needle selection device for a vertical needle for opening a warp of a jacquard machine has been developed by using a strip-shaped piezoelectric element or an electromagnetic solenoid which is curved by electrostriction as an actuator. The vertical needle selector is swung to a predetermined angle, and the vertical needle selector is engaged with the vertical needle to select the vertical needle. For example, Japanese Utility Model Laid-Open No. 4-118483 discloses The above-mentioned device is known.

As shown in FIG. 13, a needle selection device for a jacquard machine disclosed in the official gazette is provided with a slide guide 100 driven up and down, and a hook 1
02 is locked to the slide guide 100,
A plurality of vertical needles 101,... Which can be raised as the slide guide 100 is raised, and a housing 104 arranged above the slide guide 100 and driven to move up and down in the opposite phase to the slide guide 100 are provided.

In the housing 104, a plurality of hook levers (perpendicular needle selectors) with permanent magnets 106,... Corresponding to the plurality of vertical needles 101,. An electromagnetic solenoid 109 having a magnetic core inserted therein is disposed at a predetermined position in the housing 104 opposite to the permanent magnet 107 of the lever 106, and a lower end of each hook lever 106 is provided at an upper end of the vertical needle 101. A hook 108 that can be engaged with the formed hook 103 is formed.

When the permanent magnet 107 is repelled by the electromagnetic solenoid 109 near the final approach position of the hook lever 106 and the housing 104 when the slide guide 100 is raised and the housing 104 is lowered, the hook portion 108 and the vertical needle 101 are moved. Is engaged, and when the permanent magnet 107 is attracted to the corresponding electromagnetic solenoid 109, the engagement is released.

Therefore, by controlling the angular position of the plurality of hook levers 106 for each hook lever 106 to select a desired vertical needle 101, the vertical needle 101 is connected to the lower end of the vertical needle 101 via the thread 110. The opened warp (not shown) can be opened in a desired mode.

[0007]

However, the needle selection device of the jacquard machine has a plurality of hook levers 106,
, A plurality of electromagnetic solenoids 109, an electric circuit board (not shown) for controlling the plurality of electromagnetic solenoids 109, and a relatively heavy housing 104 having an electric cable (not shown). , With the selected vertical needles 101,..., A large vibration is generated as the housing 104 moves up and down.
Not a few problems have occurred in terms of durability and reliability of needle selection (reliability of opening operation). On the other hand, in order to solve this vibration problem, it is conceivable to reduce the elevating speed of the housing 104, but this cannot improve the productivity.

On the other hand, since there are various problems with the actuator of the electromagnetic solenoid 109, the needle selection device of the Jacquard machine disclosed in Japanese Patent Application Laid-Open No. H11-81104 by the present applicant prior to the present application is shown in FIG. As shown in the drawing, a piezoelectric element body 121 having a band shape that is curved by application of a voltage is used as an actuator, and one end 122 of the piezoelectric element body 121 is engaged with a vertical needle selector 123 to thereby form the piezoelectric element body 1.
A configuration is adopted in which the vertical needle selector 123 is swung between the needle selection position B and the non-needle selection position A with the curvature of 21, but according to this configuration, when a large load is applied to the vertical needle 124, The piezoelectric element body 121 directly connected to the vertical needle selector 123 may be damaged.

[0009] In any of the above-described needle selection devices of the Jacquard machine, the needle selection device can be detached from a Jacquard machine main body (not shown) for maintenance and the life of the electromagnetic solenoid 109 (piezoelectric element body 121). However, in the operation of removing the needle selecting device when a malfunction occurs in the needle selecting device during the operation of the jacquard machine, first, a plurality of vertical needles 101,. 124, ...)
Must be manually removed one by one from the hook levers 106,... (Vertical needle selectors 123,...), And this operation is extremely complicated, requires a long time, This was a factor that reduced the operation rate.

The present invention has been made in view of the above-described problems, and has a needle selection device for a jacquard machine excellent in durability, reliability of needle selection (reliability of opening operation), and load resistance. And a second object is to provide a needle selection device for a Jacquard machine capable of easily performing an exchange operation.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a needle selection device for a jacquard machine according to the present invention comprises a plurality of vertical needles 20,..., 50,. Member 1
3, 43 and a position A where the transport members 13, 43 are arranged in the traveling direction and advance to the path P of the vertical hands 20, 50.
And a plurality of vertical needle selectors 5,..., 35,... Which can swing to a position B retracted from the path P of the vertical needles 20, 50, in the Jacquard machine. At least the distal ends 20a, 50a of the vertical needles 20, 50 are
The vertical needle 2 is formed to be bendable by contact with the vertical needle selectors 5 and 35 which have advanced to the path P of the vertical needle 2 and the vertical needles 2 and 50 and the transport members 13 and 43 are relatively displaced.
It is characterized in that locking members 17, 47 capable of locking the 0, 50 bent portions 23, 53 are provided.

According to the needle selection device of the jacquard machine configured as described above, at least the distal ends 20a, 50a of the vertical needles 20, 50 bent by contact with the vertical needle selectors 5, 35 are engaged with the locking members 17, 50. 47, the transport member 1
When 3,43 is separated from the vertical needle selectors 5,35, the vertical needle 2
The relative displacement between 0 and 50 and the transport members 13 and 43 is performed. On the other hand, the vertical needles 20 and 50 that do not bend because they do not contact the vertical needle selectors 5 and 35 are not locked by the locking members 17 and 47, and therefore, the vertical needle selection together with the transport members 13 and 43. The vertical needles 20 and 50 and the conveying member 1 are separated from the
No relative displacement with 3, 43 is performed. By performing any one of these operations on the warp needles 20 and 50, a warp opening operation can be performed.

Further, the needle selecting device of the jacquard machine according to the present invention is arranged such that the conveying member 43,
A pair of the locking members 47 and the vertical needles 50 are provided, respectively, and the pair of transport members 43, 43 reciprocate in opposite phases, whereby a double-acting needle selection device can be obtained.

According to the needle selection device of the jacquard machine having the above-described configuration, the pair of transport members 43, 43 and the pair of vertical needles 50, 50 alternately reciprocate with it. The needle 3 performs needle selection or non-needle selection each time any of the vertical needles 50 approaches. A pair of transport members 4
By moving 3, 43 in opposite phase, two vertical needles 5
Since both 0 and 50 do not approach at the same time, the needle selection or non-needle selection operation does not interfere with each other, and the needle selection of the pair of vertical needles 50 and 50 or Non-needle selection operations can be performed independently of each other.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> A needle selection device for a Jacquard machine according to a first embodiment of the present invention will be described below with reference to FIGS.

Numeral 20 denotes a warp needle for opening the warp 27 by linking a thread 28 connected to the warp 27.
The vertical needle 20 has a strip-shaped main body piece 21 extending vertically.
And a reinforcing piece 22 attached along the longitudinal direction of the main body piece 21 except for the upper end side 20a and the lower end side 20b of the main body piece 21. The reinforcing piece 22 is attached to the main body piece 21.
4 (b), and has a substantially T-shape in cross section as shown in FIG. 4 (b).

The main body piece 21 and the reinforcing piece 22
Is integrally formed by resin molding, and is made of a nylon plastic molded product. Therefore, portions of the main body piece 21 except for the portion where the reinforcing piece 22 is formed, that is, the upper end side 20a (the front end side) and the lower end side 20b of the vertical needle 20 have elasticity (flexibility) and are bent ( Or curved). Note that any material having elasticity, for example, a resilient metal such as a wire or a flat spring can be adopted as the material of the vertical needle 20.

On one surface (front surface) of the upper end 20a of the vertical needle 20, a hook 2
On the other hand, a projection 24 is formed on the other surface (back surface) of the upper end side 20 a of the vertical needle 20 so as to be able to engage with the vertical needle selector 5. The hook portion 23 is projected from the uppermost end of the vertical needle 20 in a hook shape, and the projection portion 24 is located at a position lower than the hook portion 23 (the upper end 2 of the vertical needle 20).
0a) (in the middle position of 0a).

Further, a hook 25 for hooking a thread 28 is formed on the lower end side 20b of the vertical needle 20. The hook portion 25 is formed by narrowing the lowermost end of the vertical needle 20 into a bar shape and bending it into a substantially U-shape, and binds the thread 28 thereto.

A locking portion (step portion) 26 is formed at an intermediate position of the vertical needle 20 so that the main body piece 21 can be locked to the bottom plate 13 by reducing its width. The locking portion 26 is formed such that the width of the upper end side 20a is smaller than the width of the lower end side 20b, and has a purpose of preventing it from falling down from the bottom plate 13.

Reference numeral 1 denotes a housing formed of a flat substrate, and the housing 1 is fixedly mounted on a Jacquard machine main body. By fitting a hole formed in a part of the vertical needle selector 5 into a plurality of shaft supports 2, which are juxtaposed and juxtaposed on the mounting surface 1a of the housing 1, the vertical needle selector A plurality of reference numerals 5 are arranged so as to be swingable about the shaft support 2.

The vertical needle selector 5 comprises an action portion 5a on one side with respect to the swing center and a swing portion 5b on the other side. The action portion 5a is formed in a forked shape while At the tip of the moving part 5b, a protrusion 6 is provided so as to project away from the mounting surface 1a so as to be able to engage with the protrusion 24 of the vertical needle 20.

The projection 6 is formed in a trapezoidal shape that is substantially right-angled in a side view. The projection 6 has an inclined surface 6 a that is inclined with respect to the longitudinal direction P of the vertical needle 20, and a longitudinal direction of the vertical needle 20. And a flat surface 6b parallel to P. In the present embodiment, the inclined surface 6 a
The flat surface 6b is inclined in a direction approaching the vertical needle 20 (separating from the mounting surface 1a of the housing 1) and the flat surface 6b is inclined.
Are formed continuously.

Reference numeral 8 denotes a piezoelectric element as a swing operation means. The piezoelectric element 8 is formed in a strip shape and one end thereof is sandwiched between the projections 3 formed on the mounting surface 1a of the housing 1. It is fixed and the other end is engaged in the forked portion of the action portion 5a of the vertical needle selector 5.

The piezoelectric element body 8 is formed, for example, by forming a metal base material that is easy to bend and has excellent bending fatigue strength into a strip shape and the surface thereof is coated with a piezoelectric ceramic layer. When a voltage is applied to the piezoelectric ceramic layer, the piezoelectric ceramic layer exhibits an electrostrictive phenomenon, and a bending stress is generated in the metal base material. The bending direction of the piezoelectric element 8 can be changed depending on whether the applied voltage is positive or negative.

Therefore, since the piezoelectric element body 8 is mounted with the strip surface vertical to the mounting surface 1a,
The needle needle 5 is curved along the mounting surface 1a, and the other end thereof presses the inner wall surface of the fork of the vertical needle selector 5 to swing the vertical needle selector 5, but a positive voltage is applied. In this case, the piezoelectric element body 8 bends in the direction of the piezoelectric element body 8 on the left, swings the vertical needle selector 5 counterclockwise, and when a negative voltage is applied. Then, the piezoelectric element body 8 bends in the direction of the piezoelectric element body 8 on the right side and swings the vertical needle selector 5 clockwise.

Further, on the mounting surface 1a of the housing 1, a plurality of stop portions 4,... Are arranged in parallel at the same interval as the shaft support portion 2, and the swinging vertical needle selector 5 is provided on either side of the housing. The swing range of the vertical needle selector 5 is also limited by contacting the stoppers 4 and 4.

As described above, when a positive voltage is applied to the piezoelectric element 8, the piezoelectric element 8 bends, the vertical needle selector 5 swings clockwise, and the vertical needle The position where the needle 5 comes into contact with the stop portion 4 located in the swinging direction, that is, the vertical needle 2
While swinging to position A which is substantially collinear with 0, when a negative voltage is applied to the piezoelectric element 8, the piezoelectric element 8 is curved and the vertical needle selector 5 is turned counterclockwise. At the same time as swinging around, the vertical needle selector 5 swings to a position where it comes into contact with the stopper 4 located in the swinging direction, that is, a position B inclined with respect to the longitudinal direction of the vertical needle 20.

In order to selectively swing a plurality of the vertical needle selectors 5,... Arranged in parallel at the same interval, any of the plurality of piezoelectric element bodies 8,. A circuit board (not shown) for applying a voltage to the piezoelectric element body 8 is provided in the housing 1, and the circuit board is controlled by a signal transmitted through a cord (not shown) and power. .

The bottom plate 13 functions as a first transport member for locking the vertical needle 20 and reciprocating the vertical needle 20. The bottom plate 13 is formed of a pair of flat plates arranged in the longitudinal direction of the vertical needle 20. Become. Then, the upper bottom plate 13 located on the housing 1 side
a and the lower bottom plate 13b located on the warp 27 side are formed with substantially T-shaped insertion holes 14a and 14b, respectively.
Therefore, one vertical needle 20 has a pair of insertion holes 14a, 14a.
b to be slidable in the longitudinal direction.

Moreover, the insertion hole 14b of the lower bottom plate 13b
In order to prevent the vertical needle 20 from falling off from the bottom plate 13 and falling, the locking portion 26 of the vertical needle 20 is formed so as to be hooked (locked). Therefore, the vertical needles 20,... Locked on the bottom plate 13 move up and down on the path P with the raising and lowering (up and down) operation of the bottom plate 13.

The knife 17 functions as a second transporting member that locks the hook 23 of the vertical needle 20 and relatively displaces the vertical needle 20 and the bottom plate 13. Further, it is made of a band plate body whose plate surface is arranged parallel to the mounting surface 1a of the housing 1. The knife 17 is attached to the bottom plate 13
Similarly to the above, it reciprocates in the up-down direction, and the direction is the direction of contact and separation with the bottom plate 13. Moreover, the knife 17 moves up and down at a position separated by a predetermined distance from the path P of the vertical needle 20 in parallel with the path P.

The bottom plate 13 and the knife 17 are driven and controlled to reciprocate in opposite phases. While the bottom plate 13 is moving up, the knife 17 is lowered.
While the bottom plate 13 is descending, the knife 17 rises, and when the bottom plate 13 is located at the top dead center, the knife 17 is located at the bottom dead center while the bottom plate 13 is located at the bottom dead center. The knife 17 is located at the top dead center.

The needle selecting device of the jacquard machine according to the present embodiment has the above-described configuration, and the mode of selecting the vertical needle 20 will be described below.

First, the manner in which the vertical needle 20 is selected will be described with reference to FIG. FIG. 1A shows a state in which the bottom plate 13 and the knife 17 are closest to each other. At this time, the projection 24 of the vertical needle 20 is located above the projection 6 of the vertical needle selector 5, that is, between the projection 24 of the vertical needle 20 and the bottom plate 13. Are located at positions where the projections 6 are interposed.
The protrusion 6 of the vertical needle selector 5 is provided with the path P of the vertical needle 20.
(See FIG. 3).

In this state, when the bottom plate 13 and the knife 17 are relatively separated from each other, that is, when the bottom plate 13 is lowered and the knife 17 is raised, as shown in FIG.
And the projection 6 of the vertical needle selector 5 are engaged, and the projection 24 of the vertical needle 20 slides on the inclined surface 6a and the flat surface 6b of the projection 6 of the vertical needle selector 5, The distal end side 20 a of the needle 20 is bent, and the hook 23 of the vertical needle 20 enters on the path of the knife 17. Therefore, the hook 23 of the vertical needle 20 is
7 will be locked.

Thereafter, when the bottom plate 13 and the knife 17 are further separated from each other, the selected vertical needle 20 is lifted upward by the movement of the knife 17 as shown in FIG. The warp 27 is lifted.

Next, a mode in which the vertical needle 20 is not selected will be described with reference to FIG. FIG. 2A shows a state in which the bottom plate 13 and the knife 17 are closest to each other. At this time,
The projection 24 of the vertical needle 20 is located above the projection 6 of the vertical needle selector 5, that is, the projection 24 of the vertical needle 20 and the bottom plate 13.
Is located at a position where the projection 6 of the vertical needle selector 5 is interposed. Then, the protrusion 6 of the vertical needle selector 5 has been displaced to a position B (see FIG. 3) retracted from the path P of the vertical needle 20.

In this state, even if the bottom plate 13 and the knife 17 are relatively separated from each other, ie, the bottom plate 13 is lowered and the knife 17 is raised, as shown in FIG.
And the projection 6 of the vertical needle selector 5 does not engage, so that the distal end 20a of the vertical needle 20 does not bend, and the hook 23 of the vertical needle 20 enters the path of the knife 17. Nothing to do. Therefore, the vertical needle 20 maintains a straight posture, and the hook 23 is not locked by the rising knife 17 and passes by the knife 17.

Thereafter, when the bottom plate 13 and the knife 17 are further separated from each other, as shown in FIG. 2 (c), the unselected needles 20 descend together with the bottom plate 13, and the warps 27 are thereby moved. Can be lowered.

As shown in FIG. 1 (C) or FIG. 2 (C), the bottom plate 13 reaches the bottom dead center and the knife 17
After reaching the top dead center, the bottom plate 13 and the knife 17 are relatively close to each other, that is, the bottom plate 13 is turned up and the knife 17 is turned down.
Must be moved above the protrusions 6 of the vertical needle selector 5, the vertical needle selectors 5,.
Must be swung so as to retreat from the courses P,... Of the vertical hands 20,.

As described above, a desired one of the plurality of vertical needle selectors 5 arranged on the housing 1 is selected, and the projection 6 is moved along the path P of the vertical needle 20. By causing the warps 27 to advance, only the desired warp needles 20 can be selected, and the opening operation of the plurality of warps 27 can be performed.

As described above, according to the needle selection device of the jacquard machine according to the present embodiment, the housing 1 on which the vertical needle selectors 5 are mounted is fixed without moving, and is smaller and lighter than the housing 1. The vertical needle 20 is selected by moving the knife 17 up and down, so that there is a problem that a large vibration is generated along with the raising and lowering operation of the housing, and the vertical The problem that the needle and the vertical needle selector are unexpectedly disengaged is eliminated, and there is an advantage that durability and reliability of needle selection (reliability of opening operation) can be improved.

In addition, according to the needle selection device of the jacquard machine according to the present embodiment, the load applied to the vertical
Therefore, even if a large load is applied to the vertical needle 20, the load is not directly transmitted to the vertical needle selector 5, and the piezoelectric element 8 is prevented from being damaged. It has the advantage that it can be done.

In addition, according to the needle selection device of the jacquard machine according to the present embodiment, the vertical needle selector 5 does not lock the vertical needle 20, but the knife provided on the jacquard machine main body side. 1
7 is configured to lock the vertical needle 20, so that if a malfunction occurs in the needle selection device during operation of the jacquard machine, the vertical needles 20,. There is an advantage that the operation of removing the needle is not required, and the needle selecting device can be quickly and easily removed.

Further, the needle selection device of the jacquard machine according to the present embodiment employs a configuration in which the bottom plate 13 and the knife 17 reciprocate in opposite phases, so that the movement stroke between the bottom plate 13 and the knife 17 is reduced. It is possible to increase the size of the warp yarns 27,.

It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.

That is, the piezoelectric element 8 as the swing operation means
May be a bimorph piezoelectric element obtained by polymerizing a ceramic layer or a unimorph piezoelectric element. The point is that the present invention is intended as long as the vertical needle selector 5 can be rocked using the bending of the rocking operation means. In this case, the method of applying a voltage to the piezoelectric element 8 is not limited to the above-described embodiment. In short, the vertical needle selector 5 has two positions,
That is, it is only necessary to be able to change the position where the protrusion 6 advances to the path P of the vertical needle 20 and the position where the protrusion 6 retracts from the path P of the vertical needle 20.

Further, the needle selecting device of the above embodiment is provided with the vertical needle 2
0 and the warp 27 correspond one-to-one, so-called single-acting type. However, a combination of the vertical needle selector 5 and the piezoelectric element 8 is provided on the front and back mounting surfaces of the housing 1 to form a pair of vertical The needles 20, 20 are vertically movable by separate knives 17, 17, respectively. An operating thread is connected to a lower portion of each of the vertical needles 20, 20, a first pulley is suspended from the operating thread, and the first pulley is suspended. The present invention can also be applied to a so-called double-acting needle selecting device in which a thread passing through one end is wound around a second pulley connected to the pulley by a connecting member.

The vertical needle selector 5, bottom plate 13, knife 1
7. The shape of the vertical needle 20 is not limited to the above embodiment, and can be changed without departing from the scope of the present invention. The vertical needle 20 only needs to be deformable at least on the distal end side. Therefore, the entire vertical needle 20 may be deformable with elasticity.

Further, in the above embodiment, the bottom plate 13 as the first conveying member and the knife 17 as the second conveying member are reciprocated in opposite phases. What is necessary is just to be fixed to the card machine main body, and the bottom plate 13 and the knife 17 move relatively.
Therefore, only the bottom plate 13 may move up and down without moving the knife 17.

Further, even when the bottom plate 13 and the knife 17 reciprocate, respectively, the present invention is not limited to the mode in which the tip side is bent when the vertical needle 20 descends, as in the above embodiment. A mode in which the tip side is bent when ascending may be used.

Furthermore, the bottom plate 13 and the knife 17 do not need to move in the same direction, and if both move relatively close to or away from each other, a mode in which the moving directions of both are not parallel can be adopted.

<Second Embodiment> A needle selection device of a Jacquard machine according to a second embodiment of the present invention will be described below as an example of a double-acting needle selection device with reference to FIGS.

The vertical needle 50 is attached to the upper and lower ends of the main body piece 51 by insert molding, and is attached to the lower end of the main body piece 51 by insert molding. Slide body 54
And a guide body 56 attached to an intermediate portion of the main body piece 51 by insert molding.

The main body piece 51 is formed of a strip-shaped metal piece having elasticity, and a portion of the main body piece 51 excluding a portion where the hook body 52, the slide body 54 and the guide body 56 are formed, that is, the vertical needle 50 Are provided with elasticity (flexibility) and can be bent (or curved).

On one surface (front surface) of the hook 52,
A hook 53 is formed so as to be able to be locked to the knife 47 as a locking member, while the other surface (back surface) of the guide body 56 is to be able to engage with the vertical needle selector 35. A protrusion 57 is formed. The hook portion 53 is provided at the uppermost end of the vertical needle 50 so as to protrude in a hook shape.
The position lower than the hook 53 (the upper end 50a, 5
0b) (a middle position of 0b).

Here, the projection 57 has an inclined surface 57 a inclined with respect to the longitudinal direction of the vertical needle 50 and a flat surface 57 b parallel to the longitudinal direction of the vertical needle 20. In the present embodiment, the inclined surface 57a is inclined in a direction away from the vertical needle selector 35 (away from the mounting surface 31a of the housing 31) toward the distal end 50a of the vertical needle 50, and the flat surface 57b is , And are formed continuously with the inclined surface 57a.

One surface (front surface) of the slide body 54
Is formed with a locking portion 55 so as to be lockable with the reciprocating knife 43 as a conveying member. The locking part 55
Is protruded in a hook shape at a position lower than the protrusion 57 and has a purpose of preventing the knife from falling down from the reciprocating knife 43.

Reference numeral 31 denotes a housing made of a flat substrate, and the lower end of the housing 31 is attached to the upper end of a mounting plate 40 arranged at a fixed interval on a Jacquard machine main body (not shown). It is arranged close to and detachably attached to the jacquard machine body. By fitting a hole formed in a part of the vertical needle selector 35 into a plurality of axial support parts 32,... Protruding and juxtaposed on the mounting surface 31a of the housing 31, the vertical needle selector 35 is a shaft support 32
A plurality is arranged so as to be swingable around the center.

The vertical needle selector 35 comprises an operating portion 35a on one side with respect to the center of swing and a swinging portion 35b on the other side, and the operating portion 35a is formed in a forked shape. The tip of the swinging portion 35b protrudes downward from the lower end of the housing 31, and this portion projects in a direction perpendicular to the mounting surface 31a so as to be able to engage with the projection 57 of the vertical needle 50. The part 36 is provided in a protruding manner.

The protrusion 36 is formed in a trapezoidal shape that is substantially right-angled in a side view. The protrusion 36 has an inclined surface 36 a that is inclined with respect to the longitudinal direction of the vertical needle 50, Along with a parallel flat surface 36b. In the present embodiment, the inclined surface 36a is inclined in a direction away from the vertical needle 20 (approaching the mounting surface 31a of the housing 31) toward the distal end of the vertical needle selector 35, and
b is formed continuously to the inclined surface 36a.

The protrusion 36 is provided with a vertical needle selector 35.
Oscillating portion 35 of the vertical needle selector 35
The tip of b has a U-shape facing downward in a side view.
Here, the inclined surface 36a and the flat surface 36b of the projecting portion 36 respectively correspond to the vertical surfaces 40a of the mounting plate 40 which is erected.
The housing 3 is provided so as to protrude outward from the front and back surfaces.
1 are evenly arranged with respect to the mounting plate 40.

Then, a pair of vertical needles 50,
50 are arranged along the vertical surface 40a of the mounting plate 40, and the other surface (back surface) of the slide body 54 and the guide body 56
The flat surface 57b of the projection 57 is the vertical surface 40a of the mounting plate 40.
Is in sliding contact with Further, the pair of vertical needles 50, 50 are arranged to face each other in a direction orthogonal to the plate surface of the mounting plate 40 with the mounting plate 40 interposed therebetween. As a result, the guide bodies 56, 5
The six protrusions 57 are arranged substantially on the same plane.

Further, one vertical surface 40 a of one mounting plate 40
The sliding body 54 of the vertical needle 50 in contact with the
Of the vertical needle 50 in contact with the other vertical surface 40a
And the pair of slide members 5
One reciprocating knife 43 is interposed in the flat space created between the four and 54. At the upper end of the reciprocating knife 43, a V-shaped groove in a side view is formed, and the locking portion 55 of the slide body 54 of the vertical needle 50 is locked on the inclined surface, so that one reciprocation is performed. With the moving knife 43, the two vertical needles 50 are raised and lowered simultaneously.

Reference numeral 38 denotes a piezoelectric element as a swing operation means, the tip of which is engaged in the forked portion of the action portion 5a of the vertical needle selector 5. The other detailed forms are not different from the first embodiment. In addition, since the pair of vertical needles 50, 50 are opposed to each other, and the pair of protrusions 57, 57 are located at the opposing positions, the vertical needle selector 35 as shown in FIG.
Is swung to one side, the pair of projections 36 of the vertical needle selector 35 are positioned on the path of the projection 57 of the vertical needle 50, respectively. When the vertical needle selector 35 is swung to the other side as shown in FIG. 7B, the pair of protrusions 36 of the vertical needle selector 35 It deviates from the course of the projection 57 and becomes a non-needle selection position for both the vertical needles 50.

The needle selection device of the jacquard machine according to the second embodiment has the above-described configuration. Next, the operation of the vertical needle 50 will be described.

FIG. 8A shows two reciprocating knives 43,
Numeral 43 indicates a state located at the center of the amplitude. At this time, the projection 57 of the vertical needle 50 is located below the projection 36 of the vertical needle selector 35, that is, between the projection 36 of the vertical needle selector 35 and the reciprocating knife 43. Projection 57 of needle 50
Is in the intervening position. The projection 36 of the vertical needle selector 35 is rockingly displaced to a position where the vertical needle 50 has advanced into the path of the vertical needle 50.

In this state, the reciprocating knife 43 and the knife 47 are relatively separated from each other, that is, one reciprocating knife 43 (left side in the figure) rises and the other reciprocating knife 43 (right side in the figure) descends. As a result, the protrusion 5 of the one vertical needle 50
7 and the protrusion 36 of the vertical needle selector 35 contact. Therefore, as shown in FIG. 8 (b), if one reciprocating knife 43 is at the top dead center and the other reciprocating knife 43 is at the bottom dead center, the distal end 50a of one vertical needle 50 moves to the knife 47 side. And the hook 53 of the vertical needle 50 enters the region above the knife 47.

When one of the reciprocating knives 43 descends and the other reciprocating knives 43 ascends from this state, as shown in FIG. The hook 53 of the vertical needle 50 is locked by the knife 47, and the one vertical needle 50 is selected.

Thereafter, as one reciprocating knife 43 further descends from the center of the amplitude and the other reciprocating knife 43 further rises from the center of the amplitude, as shown in FIG. 43 is a bottom dead center, and the other reciprocating knife 43 is a top dead center. At this time, the protrusion 36 of the vertical needle selector 35 is displaced by swinging to a position retracted from the path of the vertical needle 50.

Therefore, even if the other reciprocating knife 43 is raised, the projection 57 of the other vertical needle 50 and the vertical needle selector 35
Of the vertical needle 50 does not bend, and the hook 53 of the other vertical needle 50 does not enter the region above the knife 47. Therefore, the other vertical needle 50 maintains a straight posture, and the hook 53 passes by the knife 47.

Thereafter, as one reciprocating knife 43 is raised and the other reciprocating knife 43 is lowered, as shown in FIG. 9B, the other vertical needle 50 is not selected. , Together with the reciprocating knife 43.

As described above, of the plurality of vertical needle selectors 35,...
5 and the protrusion 36 of the vertical needle selector 35 is
By making advancing to the course of 0, only the desired warp needle 50 can be selected, and the opening operation of a plurality of warps can be performed.

FIG. 10 is a graph showing an example of the operation of the needle selecting device. (A) is an elevating mode of one reciprocating knife 43, (B) is an elevating mode of the other reciprocating knife 43 (opposite phase of one reciprocating knife 43), and (C) is a voltage applied to the piezoelectric element body 38. The application mode (the needle selection position if positive, the non-needle selection position if negative), (d) shows the opening mode of the warp.

First, before the one reciprocating knife 43 reaches the top dead center (for example, at timing a), a positive voltage is applied to swing the vertical needle selector 35 to the needle selection position. Thus, one vertical needle 50 is selected. Also, when the other reciprocating knife 43 is raised (for example, at timing b), the voltage application remains positive, so that the other vertical needle 50 is also selected. Further, when the one reciprocating knife 43 rises again (for example, at the timing of c), the voltage application is still positive, so that the one vertical needle 50 is kept in the needle selection state.

The voltage application is turned negative before the other reciprocating knife 43 reaches the top dead center again (for example, at the timing of d), and the vertical needle selector 35 is swung to the non-needle selecting position. By doing so, the needle selection state of the other vertical needle 50 is released, and when the one reciprocating knife 43 rises again (for example, at the timing of e), the voltage application remains negative. The needle selection state of the vertical needle 50 is also released.

As described above, the needle selecting device of the jacquard machine according to the second embodiment naturally has the effect of the needle selecting device according to the first embodiment.
Since the configuration is adopted in which the projection 57 of the zero does not move upward beyond the projection 36 of the vertical needle selector 35, when the needle selector is pulled out upward, the vertical needle selector 35 and Vertical needle 50
Can not interfere with each other, and therefore, there is an effect that the needle selecting device can be removed more easily than the needle selecting device of the first embodiment.

Further, in the needle selection device of the jacquard machine according to the second embodiment, when the vertical needle 50 descends, the distal end side does not bend but the vertical needle 50 rises as in the first embodiment. This is a configuration in which the tip side is bent when performing. Therefore,
The position where the reciprocating knife 43 slightly rises from the bottom dead center (that is, the pair of reciprocating knives 43 slightly descends from the top dead center, and the protrusion 57 of the vertical needle 50 and the protrusion of the vertical needle selector 35). Part 3
6) to a position before the reciprocating knife 43 reaches the top dead center, which can be used as switching timing of the voltage application, so that it is possible to perform a comfortable control. It also has an effect. This has the effect of further speeding up the needle selection device and increasing the productivity of the fabric.

The double-acting needle selecting device is not limited to the above embodiment, and the shapes of the vertical needle selector 35, the reciprocating knife 43, the knife 47, and the vertical needle 50 are limited to the above embodiment. However, it can be changed without departing from the gist of the present invention.

In the above embodiment, one vertical needle selector 35 performs the needle selecting operation of the pair of vertical needles 50, 50. However, the piezoelectric element body 38 and the vertical needle selector 35 May be provided on the front and back of the housing 31 in a pair to form a double-acting needle selecting device.

Also, as in the above embodiment, a pair of vertical needles 5
When the vertical needle selector 35 is swung to one side by arranging the 0 and 50 facing each other, the vertical needle selector 35 does not have a needle selection position for both the vertical needles 50 and 50, but a pair of the needles according to the above embodiment. A predetermined amount of the vertical needles 50 is moved along the plate surface of the housing 31 (substantially equal to the swing width of the protrusion 36 of the vertical needle selector 35).
11 and the protrusion 5 of the vertical needle 50 as shown in FIG.
When the vertical needle selector 35 is swung to one side by displacing the needle 7 by a predetermined amount, the needle selecting position for one of the vertical needles 50 is established, and the vertical needle selector 35 is swung to the other side. Alternatively, a configuration in which a needle selection position is set for the other vertical needle 50 can also be adopted. In this case, in order to obtain the same opening operation as in FIG. 10, a voltage application mode as shown in FIG. 12 is used.

[0083]

As described above, in the needle selection device of the jacquard machine according to the present invention, at least the distal end of the vertical needle is formed to be bendable by contact with the vertical needle selector that has advanced into the course of the vertical needle. Further, in order to relatively displace the vertical needle and the conveying member, a locking member capable of locking a bent portion of the vertical needle is provided, so that a vertical needle selector is provided as in the related art. The problem that large vibration is generated by the raising and lowering operation of the housing and the problem that the vertical needle and the vertical needle selector are unexpectedly disengaged due to this vibration are eliminated, and the durability and needle selection are eliminated. (Reliability of the opening operation) can be improved. In addition, the operating speed of the needle selecting device can be increased, and the productivity of the fabric can be improved.

Further, in the needle selection device for a jacquard machine according to the present invention, the vertical needle selector does not lock the vertical needle, but the locking member provided on the jacquard machine main body locks the vertical needle. Because of the locking structure, even if a trouble occurs in the needle selection device during operation of the jacquard machine, the needle selection device can be quickly and easily removed, and the jacquard machine is stopped by a short stop. It is possible to preferably prevent the operation rate from decreasing.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a needle selection mode of a needle selection device according to a first embodiment of the present invention, in which (a) shows a state where a bottom plate is at a top dead center and a knife is at a bottom dead center; (B) the bottom plate is lowered and the knife is raised, (d) the bottom plate is at bottom dead center,
This shows a state in which the knife is at the top dead center.

FIG. 2 is a schematic side view showing a non-needle selecting mode of the needle selecting device according to the embodiment, wherein (a) shows a state in which a bottom plate is at a top dead center, a knife is at a bottom dead center, and (b) is , The bottom plate is lowered and the knife is raised, and (d) shows the bottom plate at the bottom dead center and the knife at the top dead center.

FIG. 3 is a front view of a main part of the needle selecting device of the embodiment.

FIG. 4 is a longitudinal needle of the embodiment, wherein (A) is an overall perspective view, and (B) is a cross-sectional view taken along line AA of (A).

FIG. 5 is a side view of a main part of a needle selector according to a second embodiment of the present invention.

FIG. 6 is an overall perspective view of the vertical needle according to the embodiment.

FIG. 7 is a cross-sectional plan view of the vertical needle and the vertical needle selector of the same embodiment, where (A) shows a swing mode of the vertical needle selector that allows both vertical needles to be selected. (B) shows a swing mode of the vertical needle selector in which none of the vertical needles can be selected.

FIG. 8 is a schematic side view showing a needle selection mode of the needle selection device according to the embodiment, wherein (a) shows a state in which a pair of reciprocating knives are at the center of amplitude, and (b) shows one reciprocation. With the moving knife at top dead center and the other reciprocating knife at bottom dead center, (c)
Shows a state in which a pair of reciprocating knives are at the center of amplitude, and one vertical needle is selected.

FIG. 9 is a schematic side view showing a needle selecting mode of the needle selecting device according to the embodiment, in which (a) one reciprocating knife is at a bottom dead center and the other reciprocating knife is at a top dead center. Yes, one vertical needle remains selected, and (b) shows a state in which the pair of reciprocating knives is at the center of amplitude and one vertical needle remains selected.

FIG. 10 is a graph showing the state of the needle selecting device and the vertical needle according to the embodiment, wherein (A) shows the displacement of one reciprocating knife;
A time diagram, (b) is a displacement-time diagram of the other reciprocating knife, (c) is a voltage-time diagram applied to the piezoelectric element body,
(D) shows an opening width-time diagram of the warp yarn.

FIG. 11 is a cross-sectional plan view of a vertical needle and a vertical needle selector according to a modified example of the same embodiment, and (a) shows a swing of the vertical needle selector that allows one vertical needle to be selected. (B) shows a swing mode of the vertical needle selector in which the other vertical needle can be selected.

12 is a graph showing the state of the needle selecting device and the vertical needle according to the modification, wherein (a) is a displacement-time diagram of one reciprocating knife, and (b) is the other reciprocating knife. (C) is a voltage-time diagram applied to the piezoelectric element body,
(D) shows an opening width-time diagram of the warp yarn.

FIG. 13 shows a schematic side view of a first conventional needle selecting device.

FIG. 14 shows a schematic front view of a second conventional needle selecting device.

[Explanation of symbols]

1,31 ... housing, 5,35 ... vertical needle selector, 5a,
35a working portion, 5b, 35b swinging portion, 6, 36 projecting portion, 6a, 36a inclined surface, 6b, 36b flat surface,
8, 38: piezoelectric element body, 13: bottom plate, 43: reciprocating knife, 17, 47: knife, 20, 50: vertical needle, 20a,
50a, 50b ... upper end side, 23, 53 ... hook, 24, 5
7 Projection, 26, 55 Locking part

Claims (7)

[Claims] 1. A transport member (13, 43) which locks a plurality of vertical needles (20,..., 50,...) And reciprocates, and is arranged in a traveling direction of the transport member (13, 43). The position (A) where the vertical needle (20, 50) advances to the path (P) and the position (B) where the vertical needle (20, 50) retracts from the path (P).
Vertical needle selectors (5, ..., 35, ...)
In a needle selection device of a jacquard machine provided with:
Is formed to be bendable by contact with the vertical needle selector (5, 35) that has advanced to the path (P) of the vertical needle (20, 50), and is further conveyed to the vertical needle (20, 50). The members (13,
43), the vertical needles (20, 50)
A jacquard machine, provided with a locking member (17, 47) capable of locking a bent portion (23, 53) of the jacquard machine. 2. The needle selection device for a jacquard machine according to claim 1, wherein said locking member (17, 47) is configured to reciprocate in a direction of coming into contact with and separating from said transport member (13, 43). . 3. The needle selection device for a jacquard machine according to claim 2, wherein said transport member (13, 43) and said locking member (17, 47) are configured to reciprocate in opposite phases. 4. One of the vertical needles (20, 50) and the vertical needle selector (5, 35) is provided with a vertical needle (20, 50).
Slope (6a, 36a) inclined with respect to the course (P)
Is formed, and on the other hand, a projection (24, 57) slidable on the inclined surface (6a, 36a) is formed, and the projection (24, 57) slides on the inclined surface (6a, 36a). The needle selection device for a jacquard machine according to any one of claims 1 to 3, wherein the vertical needles (20, 50) are configured to bend when moved. 5. A pair of said transport member (43), said locking member (47) and said vertical needle (50) are provided for each of said one vertical needle selector (35). 2. The double-acting needle selection device for a jacquard machine according to claim 1, wherein the transport members (43, 43) are configured to reciprocate in opposite phases. 6. A pair of inclined surfaces (36a, 36a) which are inclined with respect to the path (P) of the vertical needle (50) are formed at the tip of the vertical needle selector (35), respectively. The protrusion (5) slidable on the inclined surface (36a) is attached to the vertical needle (50).
7) is formed, and one protrusion (57) slides on one inclined surface (36a), and the other protrusion (57) slides on the other inclined surface (36a). 6. A double-acting needle selection device for a jacquard machine according to claim 5, wherein said vertical needle (50) is configured to bend. 7. A double-acting needle selection device for a jacquard machine according to claim 6, wherein said inclined surfaces (36a, 36a) are formed so as to be closer to each other toward the tip end.