WO2002048439A1

WO2002048439A1 - Needle selector of jacquard machine

Info

Publication number: WO2002048439A1
Application number: PCT/JP2001/010963
Authority: WO
Inventors: Kunihiro Takemura
Original assignee: Takemura Techno Works Co., Ltd.
Priority date: 2000-12-14
Filing date: 2001-12-13
Publication date: 2002-06-20
Also published as: CN1479816A; AU2002222640A1; EP1357210A4; CN1289728C; EP1357210A1

Abstract

A needle selector of jacquard machine in which the forward end side (20a) of a hook (20) is formed to bend through contact with a longitudinal needle selector (5) advancing into the course P of the hook (20) in order to enhance durability, reliability of needle selection (reliability of opening operation), and load resistance. Furthermore, a member (17) for stopping the bent part (23) of the hook (20) is provided in order to displace the hook (20) and a carrying member (13) relatively. When the carrying members (13, 43) are separated from the hook selectors (5, 35) under a state where the forward end side (20a, 50a) of the hooks (20, 50) bent through contact with the hooks selectors (5, 35) are stopped at the stop members (17, 47), relative displacement takes place between the hooks (20, 50) and the carrying members (13, 43). Since the hooks (20, 50) not touching the hook selectors (5, 35) are not stopped at the stop members (17, 47), the hook selectors (5, 35) are separated along with the carrying members (13, 43) and relative displacement does not takes place between the hooks (20, 50) and the carrying members (13, 43) and opening operation of warp can be carried out.

Description

Description Needle selection device for Jacquard machine

The present invention relates to a needle selection device for a jacquard machine, which is a warp shedding device for a loom. Background art

Conventionally, a needle selection device for opening a warp yarn of a jacquard machine has been configured such that a strip-shaped piezoelectric element or an electromagnetic solenoid that is curved due to an electrostriction phenomenon is used as an actuator, and an arbitrary needle selection device is used. The vertical needle is selected by engaging the vertical needle selector with the vertical needle by swinging the needle to a predetermined angle, for example, Japanese Utility Model Laid-Open No. 4-11188483. The proposed device is known.

As shown in FIG. 13, a needle selection device of a jacquard machine disclosed in a publicly-known publication has a slide guide 100 driven up and down, a slide guide 100 passed through the slide guide 100, and a hook portion 102. By being locked to the slide guide 100, the plurality of vertical needles 101,... Which can be raised with the rise of the slide guide 100, are arranged above the slide guide 100, There is provided a housing 104 driven up and down in opposite phase to the slide guide 100. In the housing 104, a plurality of permanent magnet hook levers (vertical needle selectors) 106,... Corresponding to the plurality of vertical hands 101,. At a predetermined position in the housing 104 facing the permanent magnet 107 of each hook lever 106, an electromagnetic solenoid 109 with a magnetic core inserted therein is arranged. At the lower end of 06, there is formed a hook 108 that can be engaged with the hook 103 formed at the upper end of the vertical needle 101.

The hook lever 106 is moved when the permanent magnet 107 is repelled by the electromagnetic solenoid 109 near the final approach position of the slide guide 100 and the housing 104 due to the lowering of the housing 104. , The angle at which the hook portion 108 engages with the hook portion 103 of the vertical needle 101 When the permanent magnet 107 is attracted to the corresponding electromagnetic solenoid 109, it is in an angular position at which the engagement is released.

Therefore, by controlling the angular position of the plurality of hook levers 106,... For each hook lever 106, and selecting the desired vertical needle 101, the thread is passed through the lower end of the vertical needle 101. The warp (not shown) connected via 110 can be opened in a desired manner. However, the needle selection device of the Jacquard machine controls the plurality of hook levers 106,..., The plurality of electromagnetic solenoids 109,..., The plurality of electromagnetic solenoids 109,. , Which is a relatively heavy object equipped with an electric circuit board (not shown) and an electric cable (not shown), is driven up and down together with the selected vertical needles 101, .... However, large vibrations were generated by the raising and lowering operation of the housing 104, and there were not a few problems in terms of durability and reliability of the needle selection (reliability of the 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 productivity.

In addition, it is considered that there are various problems in the practice of the electromagnetic solenoid 109, and the applicant of the present invention made a needle selection of a jacquard machine disclosed in Japanese Patent Application Laid-Open No. 11-111104 prior to the present application. As shown in Fig. 14, the apparatus uses a band-shaped piezoelectric element 1 21 which is curved by application of a voltage as an actuator, and uses one end 1 2 2 of the piezoelectric element 1 2 1 as a vertical needle selector 1. By locking to 23, the vertical needle selector 1 2 3 swings between the needle selection position B and the non-needle selection position A due to the curvature of the piezoelectric element 1 2 1, According to this configuration, when a large load is applied to the vertical needle 124, the piezoelectric element 121 directly connected to the vertical needle selector 123 may be damaged.

In addition, in any of the jacquard machine needle selection devices disclosed in the above publications, the jacquard machine main body (not shown) is required for maintenance and the life of the electromagnetic solenoid 109 (piezoelectric element 122). In the event that the needle selection device becomes defective while the jacquard machine is in operation, the removal of the needle selection device must first be performed by removing the plurality of vertical needles from which the operator has selected. 0 1,… (1 2 4,...) Must be manually removed from hook levers 10 6,… (vertical needle selectors 1 2 3,…) one by one. Extremely complicated In addition, it took a lot of time to reduce the operation rate of Jacquard machines. Therefore, the present invention has been made in view of the above problems, and provides a needle selection device for a jacquard machine excellent in durability, reliability of needle selection (reliability of opening operation), and load resistance. The second problem is to provide a jacquard machine needle selection device that can easily perform replacement work. Disclosure of the invention

The jacquard machine according to the present invention has a needle selecting device comprising: transport members 13 and 43 which reciprocate while retaining a plurality of vertical needles 20,..., 50,. A plurality of vertical needle selectors 5,..., Which can swing to a position A where the vertical needles 20 and 50 advance on the path P and a position B where the vertical hands 20 and 50 retreat from the path P, respectively. 35, ..., a needle selecting device for a jaw-forced machine, comprising: a vertical needle selecting device that has advanced to the path P of the vertical needles 20, 50 at least at the distal end side of the vertical needles 20, 50; The bent portions 23 and 53 of the vertical needles 20 and 50 are formed so that the vertical needles 20 and 50 and the conveying members 13 and 43 can be displaced relative to each other. It is characterized in that locking members 17, 47 which can be locked are provided.

According to the needle selection device of the jacquard machine having the above configuration, 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. When the transport members 13 and 43 are separated from the vertical needle selectors 5 and 35 in the state of being locked to the vertical needles 47 and 47, the relative displacement between the vertical needles 20 and 50 and the transport members 13 and 43 is performed. On the other hand, the vertical needles 20, 50 which do not bend because they do not come into contact with the vertical needle selectors 5, 35 are not locked by the locking members 17, 47. The vertical needles 20 and 50 and the transport members 13 and 43 do not move relative to each other. By performing any of these operations on the vertical needles 20 and 50, the opening operation of the warp can be performed.

Therefore, as in the related art, there is a problem that a large vibration is generated as the housing provided with the vertical needle selector moves up and down, and the vertical needle and the vertical needle selector are unexpectedly involved due to the vibration. Solution This eliminates the problem of elimination, and improves the durability and the reliability of the needle selection (the certainty of the opening operation). Then, the operating speed of the needle selecting device can be increased, and the productivity of the woven fabric can be improved.

In the jacquard machine according to the present invention, the vertical needle selector does not lock the vertical needle, but the locking member provided on the jaw force machine main body side has the vertical needle. The needle-selecting device can be quickly and easily removed even if a malfunction occurs in the needle-selecting device during operation of the jacquard machine. It is possible to suitably prevent a decrease in the operating rate of the card machine.

Further, in the needle selection device of the jacquard machine according to the present invention, the transport member 43, the locking member 47, and the vertical needle 50 are provided in pairs for one vertical needle selector 35. In addition, a double-acting needle selection device can be obtained by reciprocating the pair of transport members 43, 43 in opposite phases.

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 each other. The needle 3 performs needle selection or non-needle selection every time any of the vertical needles 50 approaches. By moving the pair of conveying members 43, 43 in opposite phases, the two vertical needles 50, 50 do not approach at the same time. There is no interference, and the selection or non-selection operation of the pair of vertical needles 50, 50 can be independently performed by one vertical needle selector 3. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows a needle selection mode of the needle selection device according to the first embodiment of the present invention. FIG. 1A is a schematic side view of a state in which a bottom plate is at a top dead center and a knife is at a bottom dead center. Fig. 1 is a schematic side view of a state in which the bottom plate is lowered and a knife is raised, and Fig. 1C is a schematic side view in a state where the bottom plate is at a bottom dead center and a knife is at a top dead center.

2 shows a non-needle selecting mode of the needle selecting device according to the embodiment, FIG. 2A is a schematic side view of a state where a bottom plate is at a top dead center and a knife is at a bottom dead center, and FIG. 2B is a bottom plate. Goes down, knife goes up FIG. 2C is a schematic side view showing a state in which the bottom plate is at the bottom dead center and the knife is at the top dead center.

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

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

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

FIG. 8 shows a needle selecting mode of the needle selecting device according to the embodiment, FIG. 8A is a schematic side view of a state in which a pair of reciprocating knives are at the center of amplitude, and FIG. Schematic side view with the moving knife at top dead center and the other reciprocating knife at bottom dead center.Figure 8C shows a pair of reciprocating knives at the center of amplitude and one vertical needle selected. It is a schematic side view of a state.

FIG. 9 shows a needle selecting mode of the needle selecting device according to the embodiment. FIG. 9A shows one reciprocating knife at the bottom dead center, the other reciprocating knife at the top dead center, and FIG. FIG. 9B is a schematic side view of a state in which a pair of reciprocating knives are at the center of amplitude and one of the vertical needles is still selected.

FIG. 10 shows a graph of the state of the needle selecting device and the vertical needle according to the same embodiment, FIG. 10 OA shows a one-hour diagram of the displacement of one reciprocating knife, and FIG. A knife displacement-time diagram, FIG. 10C is a one-hour diagram of a voltage applied to the piezoelectric element, and FIG. 10D is a one-hour diagram of the warp opening width.

FIG. 11 shows a vertical needle and a vertical needle selector according to a modification of the embodiment. FIG. 11A shows a swinging mode of the vertical needle selector that allows one of the vertical needles to be selected. FIG. 11B is a cross-sectional plan view of a swing mode of a vertical needle selector that allows the other vertical needle to be selected.

Fig. 12 shows a graph of the state of the needle selecting device and the vertical needle according to the modification, Fig. 12A is a one-time diagram of the displacement of one reciprocating knife, and Fig. 12B is the other. One hour displacement of reciprocating knife The diagram, FIG. 12C is a time diagram of the voltage applied to the piezoelectric element body, and FIG. 12D is the time diagram of the warp opening width.

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

FIG. 14 is a schematic front view of a second conventional needle selecting device. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a needle selection device for a jacquard machine according to a first embodiment of the present invention will be described with reference to FIGS.

Reference numeral 20 denotes a warp needle to which the thread 28 connected to the warp 27 is tied to open the warp 27. The vertical needle 20 has a strip-shaped main body piece 21 extending in the vertical direction, and a longitudinal direction of the main body piece 21 except for an upper end side 20a and a lower end side 20b of the main body piece 21. And a reinforcing piece 22 attached along the same. The reinforcing piece 22 is a strip-shaped member attached so as to be orthogonal to the plate surface of the main body piece 21 along the center line of the main body piece 21. As shown in FIG. It is T-shaped.

The main body piece 21 and the reinforcing piece 22 are integrally formed by resin molding, and are made of a nylon-based plastic molded product. Therefore, of the main body piece 21, the portion excluding the portion where the reinforcing piece 22 is formed, that is, the upper end 20 a (tip end) and the lower end 2 Ob of the vertical needle 20 are elastic (flexible). ) And can be bent (or curved). It should be noted that any material having elasticity, for example, a paneling metal such as a wire or a flat spring can be used as the material of the vertical needle 20.

On one surface (front surface) of the upper end 20 a of the vertical needle 20, a hook portion 23 is formed so as to be able to be locked to the knife 17. On the other hand, the upper end 20 a of the vertical needle 20 On the other surface (back surface), a projection 24 is formed so as to be able to engage with the vertical needle selector 5. The hook portion 23 is provided in a hook shape at the uppermost end of the vertical needle 20. The projection portion 24 is located at a position lower than the hook portion 23 (the upper end side of the vertical needle 20). (Intermediate position of 20a). Further, a hook portion 25 for hooking a thread 28 is provided at the lower end 20 b of the vertical needle 20. Are formed. 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, to which the thread 28 is connected.

A locking portion (step portion) 26 is formed at an intermediate position of the vertical needle 20 so that the width of the main body piece 21 can be locked to the bottom plate 13. 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 made of a flat substrate, and the housing 1 is fixedly mounted on a Jacquard machine main body. By inserting a hole formed in a part of the vertical needle selector 5 into a plurality of shaft supports 2,... Protruding and juxtaposed on the mounting surface 1 a of the housing 1, the vertical needle selector A plurality of slaves 5 are arranged so as to be swingable about the shaft support 2.

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

The protrusion 6 is formed in a substantially right-angled trapezoidal shape when viewed from the side. The protrusion 6 has an inclined surface 6 a inclined with respect to the longitudinal direction P of the vertical needle 20, and a longitudinal direction of the vertical needle 20. It has a flat surface 6b parallel to P. In the present embodiment, the inclined surface 6a is inclined in a direction closer to the vertical needle 20 (away from the mounting surface 1a of the housing 1) toward the distal end of the vertical needle selector 5, and is flat. The surface 6b is formed continuously with the inclined surface 6a.

Reference numeral 8 denotes a piezoelectric element body as a swing operation means. The piezoelectric element body 8 is formed in a strip shape and one end thereof is fixedly held by a projection 3 formed on the mounting surface 1 a of the eight housing 1. The other end is engaged in the forked portion of the action portion 5 a 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 be bent and excellent in bending fatigue strength into a strip shape and has a surface coated with a piezoelectric ceramic layer, and a voltage is applied between the metal base material and the piezoelectric ceramic layer. When a voltage is applied, the piezoelectric ceramic layer exhibits an electrostriction phenomenon, and a bending stress is generated on the metal base material. The direction in which the piezoelectric element body 8 bends can be changed depending on whether the applied voltage is positive or negative. Since the piezoelectric element body 8 is attached with the band plate surface vertical to the mounting surface 1a, the piezoelectric element body 8 is curved along the mounting surface 1a, and the other end is formed within the fork of the vertical needle selector 5. When the positive voltage is applied, the piezoelectric element 8 moves in the direction of the piezoelectric element 8 on the left side. While bending, the vertical needle selector 5 swings counterclockwise, and when a negative voltage is applied, the piezoelectric element body 8 bends in the direction of the piezoelectric element body 8 on the right, Swing the vertical needle selector 5 clockwise.

Moreover, on the mounting surface 1 a of the housing 1, a plurality of stop portions 4,... Are arranged in parallel at the same interval as the shaft support portion 2. The swing range of the vertical needle selector 5 is limited by abutting on both 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 selector 5 Swings to a position where it comes into contact with the blocking portion 4 located in the swinging direction, that is, a position A which is substantially collinear with the vertical needle 20, while a negative voltage is applied to the piezoelectric element body 8. In this case, the piezoelectric element body 8 bends, the vertical needle selector 5 swings counterclockwise, and the vertical needle selector 5 comes into contact with the stopper 4 located in the swing direction. Swings to a position B, ie, a position B inclined with respect to the longitudinal direction of the vertical needle 20.

In addition, in order to selectively swing a plurality of the vertical needle selectors 5,... Arranged in parallel at the same interval, any of the piezoelectric elements 8,. A circuit board (not shown) for applying a voltage to the element body 8 is provided in the housing 1, and the circuit board is controlled by a signal and power transmitted through a cord (not shown). . The bottom plate 13 serves as a first transport member that locks the vertical needles 20 and reciprocates the vertical needles 20. A pair of the bottom plates 13 is arranged in the longitudinal direction of the vertical needles 20. Consisting of a flat plate. The upper bottom plate 13a located on the side of the housing 1 and the lower bottom plate 13b located on the side of the warp 27 have through holes 14a and 14b, respectively, which are substantially T-shaped. I have. Therefore, one vertical needle 20 is passed through the pair of through holes 14a and 14b, and is slidable in the longitudinal direction.

In the through hole 14 b of the lower bottom plate 13 b, the vertical needle 20 falls off the bottom plate 13. The locking portion 26 of the vertical needle 20 is formed in such a size as to be hooked (locked) in order to prevent it from dropping. Therefore, the vertical needles 20,... Locked on the bottom plate 13 move up and down on the path P as the bottom plate 13 moves up and down (up and down).

The knife 17 functions as a second transport member that locks the hook portion 23 of the vertical needle 20 and relatively displaces the vertical needle 20 and the bottom plate 13. It is made of a strip plate that is arranged substantially horizontally and with its plate surface parallel to the mounting surface 1a of the housing 1. The knife 17 reciprocates in the vertical direction similarly to the bottom plate 13, and its direction is in the direction of coming and going with the bottom plate 13. The knife 17 also moves up and down in parallel with the path P at a predetermined distance from the path P of the vertical needle 20.

Further, the bottom plate 13 and the knife 17 are driven and controlled to reciprocate in opposite phases. While the bottom plate 13 is rising, the knife 17 is lowered, while the bottom plate 13 is moved. While descending, knife 17 rises, and when bottom plate 13 is at top dead center, knife 17 is at bottom dead center, while bottom plate 13 is at bottom dead center. When positioned, knife 17 is located at top dead center.

The needle selection device of the Jacquard machine according to the present embodiment has the above configuration.

The needle selection mode of 0 will be described.

First, the manner in which the vertical needle 20 is selected will be described with reference to FIG. Figure 1A shows the bottom plate

This shows a state in which 13 and knife 17 are closest. At this time, the protrusion 2 of the vertical needle 20

4 is located above the projection 6 of the vertical needle selector 5, that is, the projection 6 of the vertical needle selector 5 between the projection 24 of the vertical needle 20 and the bottom plate 13. It is in the intervening position. And vertical needle selector

The protrusion 6 of 5 is displaced to the position A (see FIG. 3) where the vertical needle 20 has advanced onto the path P. In this state, 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. The protrusion 6 of the vertical needle selector 5 engages, and the protrusion 24 of the vertical needle 20 slides on the inclined surface 6 a and the flat surface 6 b of the protrusion 6 of the vertical needle selector 5. Therefore, the distal end 20 a of the vertical needle 20 is bent, and the hook of the vertical needle 20 is bent.

23 enters the path of knife 17. Therefore, the hook 23 of the vertical needle 20 is locked by the ascending knife 17. Thereafter, when the bottom plate 13 and the knife 17 are further separated from each other, as shown in FIG. 1C, the selected vertical needle 20 is lifted upward by the movement of the knife 17, and accordingly, The warp is lifted by 27 forces.

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 vertical between the projection 24 of the vertical needle 20 and the bottom plate 13. It is located at the position where the projection 6 of the needle selector 5 is interposed. Then, the protrusion 6 of the vertical needle selector 5 is displaced to a position B (see FIG. 3) retracted from the path P of the vertical needle 20.

In this state, the bottom plate 13 and the knife 17 are relatively separated from each other, that is, even if the bottom plate 13 is lowered and the knife 17 is raised, as shown in FIG. 4 and the projection 6 of the vertical needle selector 5 do not engage with each other, so that the distal end 20a of the vertical needle 20 does not bend and the hook 23 of the vertical needle 20 It does not enter the path of knife 17. Therefore, the vertical needle 20 maintains a straight posture, and the hook portion 23 is not locked by the ascending 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. 2C, the unselected needles 20 descend together with the bottom plate 13, and along with this, the warps 27 Is lowered.

As shown in FIG. 1C or FIG. 2C, after the bottom plate 13 has reached the bottom dead center and the knife 17 has reached the top dead center, the bottom plate 13 and the knife 17 relatively approach each other. That is, the bottom plate 13 turns upward and the knife 17 turns downward, but in this case, the rising projection 24 of the vertical needle 20 is not moved above the projection 6 of the vertical needle selector 5. Therefore, the vertical needle selectors 5,, ... must be swung so that all protrusions 6,, ... are retracted from the courses P,, ... of the vertical needles 20, ....

In this manner, the desired needle selector 5 is selected from among the plurality of needle selectors 5 arranged on the housing 1, and the protrusion 6 is advanced to the path P of the needle 20. By doing so, it is possible to select only the desired warp needle 20 and open the plurality of warp yarns 27. As described above, according to the needle selection device of the jacquard machine according to the present embodiment, the housing 1 to which the vertical needle selectors 5,,... Are fixed without moving, and is smaller and lighter than the housing 1. Since the vertical needle 20 is selected by moving the knife 17 up and down, there is a problem that large vibrations are generated as the housing moves up and down, as in the past. This eliminates the problem that the vertical needle and the vertical needle selector are accidentally disengaged, thereby improving the durability and the reliability of needle selection (reliability of opening operation).

Moreover, according to the needle selection device of the jacquard machine according to the present embodiment, the load applied to the vertical needle 20 is supported by the knife 17, so that even if a large load is applied to the vertical needle 20. However, it does not directly transmit to the vertical needle selector 5, and has an advantage that the piezoelectric element body 8 can be prevented from being damaged.

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 17 provided on the jacquard machine main body side. Are configured to lock the vertical needles 20. Therefore, if a problem occurs in the needle selection device during operation of the Jacquard machine, the vertical needles 20 locked by the vertical needle selectors 5,,. This eliminates the need for an operation of removing the needle, and thus has the advantage that 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 moving straw between the bottom plate 13 and the knife 17 is moved. This has the advantage that the opening of the warp yarns 27,... Can be obtained more effectively.

Note 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 body 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 by utilizing the bending of the rocking operation means. In this case, the method of applying a voltage to the piezoelectric element body 8 is not limited to the above-described embodiment. In short, the vertical needle selector 5 has two The position, that is, the position at which the protrusion 6 advances to the path P of the vertical needle 20 and the position at which the protrusion 6 retracts from the path P of the vertical needle 20 may be changed.

Further, the needle selecting device of the above embodiment is a so-called single-acting type in which the warp needles 20 and the warp threads 27 correspond one-on-one, but the vertical needle selector 5 and the piezoelectric element 8 Is provided on the front and back mounting surfaces of the housing 1, and the pair of vertical needles 20 and 20 are movable up and down by separate knives 17 and 17 respectively. An operating thread is connected to each lower part, a first pulley is suspended from the operating thread, and a thread passing at one end is wound around a second pulley connected to the first pulley by a connecting member, so-called, It can also be used for double-acting needle selection devices.

Further, the shapes of the vertical needle selector 5, the bottom plate 13, the knife 17, and the vertical needle 20 are not limited to the above embodiment, and can be changed without departing from the gist 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 elastically deformable.

Further, in the above embodiment, the bottom plate 13 as the first transport member and the knife 17 as the second transport member are reciprocated in opposite phases. Should be fixed to the jacquard machine body and the bottom plate 13 and the knife 17 move relative to each other. Therefore, the knife 17 may not move and only the bottom plate 13 may move up and down.

Further, even in the case where the bottom plate 13 and the knife 17 reciprocate, respectively, the present invention is not limited to the mode in which the distal end side is bent when the vertical needle 20 descends as in the above embodiment. A mode may be adopted in which the leading end side is bent when '0 rises.

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

Hereinafter, as an example of a double-acting needle selecting device, a needle selecting device of a Jacquard machine according to a second embodiment of the present invention will be described with reference to FIGS.

The vertical needle 50 has a strip-shaped main body piece 51 extending in the vertical direction and an upper end of the main body piece 51. Hooks 52 attached by insert molding, slides 54 attached to the lower end of the main body piece 51 by insert molding, and guide bodies 5 attached by insert molding to an intermediate portion of the main body piece 51 It is composed of six.

The main body piece 51 is formed of an elastic band-shaped metal piece, 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 upper end side 50a, 50b (tip side) of the needle 50 has elasticity (flexibility) and can be bent (or bent).

A hook 53 is formed on one surface (front surface) of the hook body 52 so as to be able to be locked to a knife 47 as a locking member. ) Is formed with a projection 57 so as to be engageable with the vertical needle selector 35. The hook portion 53 is provided in a hook shape at the uppermost end of the vertical needle 50, and the projection portion 57 is located at a position lower than the hook portion 53 (the upper end 5 of the vertical needle 50). 0a, 50b) (a middle position between 0a and 50b).

Here, the protrusion 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. ing. In the present embodiment, the inclined surface 57 a is more distant from the vertical needle selector 35 by about 50 a on the distal end side of the slave needle 50 (separated from the mounting surface 31 a of the housing 31). The flat surface 57b is formed continuously with the inclined surface 57a.

A locking portion 55 is formed on one surface (front surface) of the slide body 54 so as to be lockable with a reciprocating knife 43 as a transport member. The locking portion 55 is protruded in a hook shape at a position lower than the protruding portion 57 and has a purpose of preventing it from falling down from the reciprocating knife 43.

Reference numeral 31 denotes a housing formed of a flat board. The housing 31 has a lower end provided at an upper end of a mounting plate 40 arranged at regular intervals on a Jacquard machine body (not shown). They are arranged close to each other, are detachable, and are attached to the main unit. Then, a hole formed in a part of the vertical needle selector 35 is fitted to a plurality of shaft supports 32,... Protruding from the mounting surface 31a of the housing 31 and juxtaposed. Vertical needle selector 3 5 is axis Plural pieces are arranged so as to be swingable about the support 32.

The vertical needle selector 35 includes an operating portion 35a on one side with respect to the swing center and a swinging portion 35b on the other side, and the action portion 35a has a bifurcated shape. On the other hand, the tip of the oscillating portion 35 b projects downward from the lower end of the housing 31, and this portion is engaged with the protrusion 57 of the vertical needle 50. A projection 36 is provided in a direction perpendicular to the mounting surface 31a.

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

Further, a pair of the protrusions 36 are formed on the vertical needle selector 35, and the vertical needle selector 3

The tip of the oscillating portion 35b of FIG. 5 has a U-shape facing downward in a side view. Here, the inclined surface 36 a and the flat surface 36 b of the projection 36 are respectively projected outwardly from the vertical surface 40 a (front and back) of the standing mounting plate 40. The housings 31 are arranged evenly with respect to the mounting plate 40.

Along with this, a pair of vertical needles 50, 50 are respectively 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 57 b of the projection 57 is in sliding contact with the vertical surface 40 a of the mounting plate 40. Also, the pair of vertical needles 50,

50 is disposed opposite to the plate surface of the mounting plate 40 with the mounting plate 40 interposed therebetween. As a result, the projections 5 7, 5 7 of the guide bodies 56, 56 are arranged. Are arranged substantially on the same plane.

Further, a slide body 54 of a vertical needle 50 in contact with one vertical surface 40a of one mounting plate 40, and a vertical needle 50 in contact with the other vertical surface 40a of the mounting plate 40 of 瞵The sliding body 54 is disposed in the vicinity of the sliding body 54, and one reciprocating knife 43 is interposed in a flat space generated between the pair of sliding bodies 54, 54. . At the upper end of the reciprocating knife 43, a side view V The vertical groove 50 is formed, and the locking portion 5 5 of the slide body 54 of the vertical needle 50 is locked on the inclined surface, so that one reciprocating knife 43 holds two vertical needles. 50 and 50 are raised and lowered simultaneously.

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 and 50 are arranged to face each other, and the pair of protrusions 57 and 57 are located at the opposite position, as shown in FIG. When the needle is swung to one side, the pair of projections 36, 36 of the vertical needle selector 35 is positioned on the path of the projection 57 of the vertical needle 50, and both vertical needles are positioned. As shown in FIG. 7B, when the vertical needle selector 35 is swung to the other side, a pair of projections of the vertical needle selector 35 are set. 36, 36 deviate from the path of the projection 57 of the vertical needle 50, respectively, and become a non-needle selection position for both the vertical needles 50, 50.

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

FIG. 8A shows a state in which two reciprocating knives 43, 43 are 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, reciprocates with the projection 36 of the vertical needle selector 35. The protrusion 57 of the vertical needle 50 is located between the knife 43 and the knife 43. Then, the protrusion 36 of the vertical needle selector 35 is rocked and displaced to a position where the vertical needle 50 advances into the course of the vertical needle 50.

From this state, the reciprocating knives 43 and 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 (lower side in the figure) moves down. As a result, the protrusion 57 of the one vertical needle 50 comes into contact with the protrusion 36 of the vertical needle selector 35. Therefore, as shown in FIG. 8B, 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 50 a of one vertical needle 50 Is bent to the knife 47 side, and the hook 53 of the vertical needle 50 enters the region above the knife 47.

Then, from this state, if one reciprocating knife 43 is lowered and the other reciprocating knife 43 is raised, one reciprocating knife 43 is separated from the vertical needle 50 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. After pushing, one reciprocating knife 43 further descends from the center of amplitude, and the other reciprocating knife 43 further rises from the center of amplitude, as shown in FIG. 9A. Knife 43 becomes the bottom dead center, and the other reciprocating knife 43 becomes the top dead center. At this time, the protrusion 36 of the vertical needle selector 35 is rockingly displaced to a position retracted from the path of the vertical needle 50. Therefore, even if the other reciprocating knife 43 rises, the projection 57 of the other vertical needle 50 does not engage with the projection 36 of the vertical needle selector 35, so that the vertical The distal end 50a of the 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 the knife 47.

Thereafter, as one reciprocating knife 43 rises and the other reciprocating knife 43 descends, the other vertical needle 50 reciprocates without being selected, as shown in FIG. 9B. It descends with moving knife 4 3.

As described above, a desired one of the plurality of vertical needle selectors 35,... Arranged on the housing 31 is selected, and the protrusion of the vertical needle selector 35 is selected. By causing the section 36 to advance into the course of the warp needle 50, it is possible to select only the desired warp needle 50 and open the plurality of warp yarns.

FIG. 10 is a graph showing an example of an operation mode of the needle selecting device. A is the elevation of one reciprocating knife 43, B is the elevation of the other reciprocating knife 43 (opposite phase of one reciprocating knife 43), C is the application of voltage to the piezoelectric element 38. Mode (Position of needle selection if positive, non-position of needle if negative), D indicates the mode of opening of the warp.

First, a positive voltage is applied before one of the reciprocating knives 43 reaches the top dead center (for example, at timing a) to swing the vertical needle selector 35 to the needle selection position. , One vertical needle 50 is selected. Also, when the other reciprocating knife 43 rises (for example, the evening of b), the voltage application remains positive, so that the other vertical needle 50 is also selected. Further, when one of the reciprocating knives 43 rises again (for example, the timing of c), the voltage application is still positive, so that the one vertical needle 50 is kept in the needle selection state. Then, before the other reciprocating knife 43 becomes the top dead center again (for example, at timing d), the voltage application is turned negative, and the vertical needle selector 35 is swung to the non-needle selecting position. As a result, when 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 one of the vertical hands 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, but it should be noted that the protrusion of the vertical needle 50 is notable. Since the part 57 does not move upward beyond the protrusion 36 of the vertical needle selector 35, when the needle selector is pulled out upward, the vertical needle selector 35 It is unlikely that the needle and the vertical needle 50 will interfere with each other, so that the needle selecting device can be removed more easily than the needle selecting device of the first embodiment.

In addition, the needle selection device of the jacquard machine according to the second embodiment, as in the first embodiment, when the vertical needle 50 descends when the vertical needle 50 rises instead of bending the tip side. In this configuration, the tip side is bent. 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 vertical needle The position from the position where the projection 36 of the needle selector 35 does not interfere with the position before the reciprocating knife 43 reaches the top dead center can be used as the voltage application switching timing. In addition, there is also an effect that it is possible to perform a comfortable control. 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-described embodiment. The shapes of the vertical needle selector 35, the reciprocating knife 43, the knife 47, and the vertical needle 50 are the same as those of the above-described embodiment. The present invention is not limited to this, and can be changed without departing from the gist of the present invention.

In the above embodiment, one vertical needle selector 35 performs the needle selection operation of the pair of vertical needles 50, 50. However, the piezoelectric element body 38 and the vertical needle selector The double-acting needle selection device may be configured by providing a pair of the terminals 35 on the front and back of the housing 31.

Also, as in the above-described embodiment, by disposing a pair of vertical hands 50, 50 facing each other, When the needle selector 35 is swung to one side, the needle selection position is not set to both of the vertical needles 50, 50, but a pair of the vertical needles 50, 5 according to the above embodiment. 0 along the plate surface of the housing 31 by a predetermined amount (substantially equivalent to the swing width of the protrusion 36 of the vertical needle selector 35), or as shown in FIG. When the vertical needle selector 35 is swung to one side by displacing the projection portion 57 by a predetermined amount, the needle selection position for one of the vertical needles 50 is obtained, and the vertical needle selector 3 5 By swinging to the other side, a configuration in which the needle selection position is set for the other vertical needle 50 can also be adopted. In such a case, in order to obtain an opening operation equivalent to that of FIG. 10, a voltage application mode as shown in FIG. 12 is used.

Claims

The scope of the claims

1. A transport member (13, 43) that reciprocates by locking a plurality of vertical needles (20,..., 50, '...), and is arranged in the traveling direction of the transport member (13, 43). , A plurality of vertical rockable positions (A) and a position (B) retracted from the path (P) of the vertical needle (20, 50), respectively, to the path (P) of the vertical needle (20, 50). In a needle selection device of a Jacard machine equipped with a needle selector (5,…, 35,...)

At least the tip side (20a, 50a) of the vertical needle (20, 50) comes into contact with the vertical needle selector (5, 35) that has advanced to the path (P) of the vertical needle (20, 50). The vertical needle (20, 50) is bent so that the vertical needle (20, 50) and the conveying member (13, 43) are relatively displaced. A needle selection device for a jacquard machine, characterized by comprising a locking member (17, 47) capable of locking the needle.

2. The needle selection device for a jacquard machine according to claim 1, wherein the locking member (17, 47) is configured to reciprocate in a direction of coming and coming from the transport member (13, 43).

3. The needle selection device for a jacquard machine according to claim 2, wherein the transport member (13, 43) and the locking member (17, 47) are configured to reciprocate in opposite phases.

4. Either the vertical needle (20, 50) or the vertical needle selector (5, 35) is provided with an inclined surface (6a) inclined with respect to the path (P) of the vertical needle (20, 50). , 36a) are formed, and on the other hand, a projection (24, 57) that can slide on the inclined surface (6a, 36a) is formed, and the inclined surface (6a, 36a) is The needle selection device for a jacquard machine according to any one of claims 1 to 3, wherein the vertical needle (20, 50) is configured to bend when the portion (24, 57) slides. '

5. One transport needle (35) is provided with one pair of the transport member (43), the locking member (47), and the vertical needle (50). 3. The double-acting needle selection device for a Jacquard machine according to claim 1, wherein the 43, 43) are configured to reciprocate in opposite phases.

6. At the tip of the vertical needle selector (35), incline with respect to the path (P) of the vertical needle (50). While a pair of inclined surfaces (36a, 36a) are formed, a projection (57) slidable on the inclined surface (36a) is formed on each vertical needle (50). The protrusion (57) slides on the inclined surface (36a), and the other protrusion (57) slides on the other inclined surface (36a). The double-acting needle selection device for a Jacquard machine according to claim 5, wherein the needle is configured to bend.

7. The double-acting needle selection device for a jacquard machine according to claim 6, wherein the inclined surfaces (36a, 36a) are formed so as to be closer to each other toward the tip end.