JPH07166445A - Controller for warp yarn selection of jacquard machine - Google Patents

Abstract

PURPOSE:To provide a controller capable of selecting and operating warp yarn of a jacquard machine for three-stage shedding positions simply by one vertical needle. CONSTITUTION:This controller for the warp yarn selection of a jacquard machine is equipped with the first and the second select housings (2a) and (2b), having plural vertical needle guide passages for guiding the upper parts of plural vertical needles 4 arranged on the front face side thereof and respectively provided with (1) a hook lever 9 rocking in the direction in contact with or separate from the back surface of each vertical needle 4, (2) a permanent magnet 16 attached to the vicinity of the free end of the hook lever 9 and (3) an electromagnet 11 installed at a position on the side opposite to each vertical needle guide passage oppositely to the permanent magnet 16 on the back face side of the vertical needle guide passage so as to selectively engage with the vertical needle 4 and lift, lower and drive the vertical needle 4 relatively to the bottom plate 1. Each vertical needle 4 is provided with a pair of slits 10 for permitting the approach of the hook lever 9 of each select housing and receiving the hook lever and a cam face (10b) connectedly installed in the lower end of each slot for pushing back the hook lever 9 in the slot 10 to the outside of the slot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp selection control device for forming a special shed required for weaving a moquette weave or a high-low carpet, such as a three-stage opening of the warp in a jacquard machine. .

[0002]

2. Description of the Related Art Various types of warp selection mechanisms for looms have been developed to date. As one of them, for example, a vertical needle connected to each one warp thread is selectively engaged and driven by a lifting hook mechanism to form an upper half opening of the warp thread, and a non-engaged vertical needle is used. There is a mechanism in which the support guide mechanism (base plate) of its own is driven as it is to form the lower half opening, and thereby a complete punching opening is selectively formed. An electromagnet is generally used to engage or disengage the vertical needle, but in consideration of its electric energy consumption, in the recent electronic jacquard, in order to move the hook from the standby state to the vertical needle engaging position. The electromagnet is energized for the moving time of. In addition, a permanent magnet is used at a position on the hook element facing the solenoid core, and the magnetic force of the permanent magnet always keeps the hook separated from the non-excited core, and the permanent magnet repels the solenoid core. There is also a method in which the exciting current is pulse-supplied, and thereafter the restoring force of the return spring is applied to bring it to another state (Actual No. 4-118483).
In this latter method, by energizing the solenoid by energizing only one pulse, it is possible to perform the hook selection operation completely, reduce the power consumption, and minimize the heat generation of the solenoid. The adjustment of the magnetic force and the strength of the spring is delicate, and malfunction may occur due to deterioration of the spring.

The inventor of the present invention firstly eliminates the drawback of the conventional vertical needle selection system, which was caused by the return elasticity of the return spring after a momentary repulsion in a system in which a hook equipped with a permanent magnet is repulsively driven by a solenoid. The permanent magnet of the hook member is attracted by the front magnetic material portion that appears at that position on the vertical needle selection device assembly instead of the return spring, which results in low manufacturing cost, low driving power, and stable operation. The warp selection control device was invented.

The warp selection control device of the above invention comprises: a) a bottom plate for guiding the lower ends of a plurality of vertical needles each having a lower end connected to a plurality of threading lines and for restricting the lower end of the vertical needle stroke; b) A plurality of penetrating vertical needle guide passages for guiding the upper portions of the plurality of vertical needles are arranged on the front side, and selectively engaged with the vertical needles to drive them vertically with respect to the main plate. And a select housing for the purpose of swinging within a minute angle range in a substantially upright state on the back side corresponding to each vertical needle guide passage in a direction approaching and separating from the back surface of the vertical needle passing through the vertical needle guide passage. A hook lever equipped as described above, a permanent magnet mounted near the free end of the hook lever, and an electromagnet mounted opposite to the permanent magnet at a position opposite to the vertical needle passage, A magnetic pole facing the permanent magnet, The select housing having a yoke portion connected to the pole root and an auxiliary pole protruding from the other end of the yoke portion in the same direction as the magnetic pole, and c) the vertical needle, At a position slightly above the lowermost end position of the select housing with respect to the main plate, a long hole for allowing the approach of the hook lever and receiving the hook lever is provided, and the upper end of the received hook lever is locked to lock the lever. A locking edge for raising the vertical needle as it rises is formed at the upper end of the elongated hole, and when the select housing relatively moves to the lowest end position, the lowering stroke of the lowering stroke is made earlier by the main plate. At the lower end of the elongated hole in the vertical needle whose lower end position is regulated, a cam surface for pushing back the hook lever in the elongated hole to the outside of the elongated hole is provided, d) When the select housing reaches a position slightly above the lowermost end position in the relative ascending stroke with respect to the main plate, by selectively pulse-energizing the plurality of electromagnets, the magnetic poles are urged. Is made to have the same polarity and facing relationship as the permanent magnet of the corresponding hook lever, and this lever is repulsively driven toward the corresponding vertical needle.

According to the basic configuration of the above-mentioned invention, the hook lever repulsively driven by the electromagnet is located in the hook lever receiving long hole of the corresponding vertical needle, and further, in the continuous relative raising of the select housing, When the upper end of the hook lever comes into contact with the upper edge locking edge of the long hole, the vertical needle is pushed up, and the corresponding vertical needle is raised to the upper end of the housing ascending stroke. An opening is formed between the connected warp threads, and then, at the end of the housing descending stroke for closing the opening, the hook lever is made into a long hole with the cam surface of the vertical needle whose lower end is regulated by the ground plate. It is pushed out and returned to the initial state, and such an opening forming operation is continuously and selectively performed.

In the above-described operation of the apparatus, when the hook lever repulsively driven by the electromagnet swings into the corresponding long hole of the needle due to inertia, the pole on the front side of the permanent magnet of the hook lever has a housing arrangement configuration. The magnetic body located in the upper front is attracted, and the suction force of the magnetic body moves the hook lever into the elongated hole quickly and reliably.

[0007]

SUMMARY OF THE INVENTION The present invention utilizes one of the vertical needles utilizing the fact that the select housing for selecting the vertical needles in the warp selection control device of the preceding invention has a penetrating vertical needle guide passage. To extend through the first vertical needle guide passage (and thus the first select housing) to engage the second select housing with another portion of the vertical needle main body projecting upward or downward therefrom. Thus, the warp selection control by the multiple operation, such as the three-step opening method which has been conventionally performed by combining two warp needles and pulleys for one warp, is performed with one warp needle.

[0008]

In order to solve the above problems, the warp selection control device for a jacquard machine according to the present invention is: And a bottom plate which restrains the relative heights of these vertical needles from falling below a certain level, and which itself moves up and down, and b) above the main plate, the main body portion of the plurality of vertical needles. Select housing for arranging a plurality of penetrating vertical needle guide passages parallel to each other on the front side, and selectively moving with vertical needles to move up and down in opposite phase so as to approach and separate from the main plate The vertical needle guide passage is provided on the back side so as to swing within a minute angle range of a substantially upright state in the direction of contacting and separating from the back surface of the vertical needle passing through the vertical needle passage. With hook lever A permanent magnet mounted in the vicinity of the free end of the hook lever, and an electromagnet mounted at a position facing the permanent magnet and on a side opposite to the longitudinal needle passage, the magnetic pole facing the permanent magnet; A first select housing having a yoke portion connected to the base and an auxiliary pole protruding from the other end of the yoke portion in the same direction as the magnetic pole; and c) the first select housing is At the position slightly elevated from the lowermost position close to the main plate, in order to allow the hook lever to approach and receive the hook lever, a long hole is provided in each of the vertical needles along the length direction thereof. The upper end of the received hook lever is locked to form a locking edge for lifting the vertical needle as the lever is lifted, and the lower end of the hook When the housing moves to the lowermost position, a cam surface for pushing back the hook lever in the elongated hole to the outside of the elongated hole is continuously provided at the vertical needle position that is previously stopped at the lower end position by the main plate. D) In each of the plurality of vertical needles, a second long hole similar to the first long hole provided below the first long hole at regular intervals. A hole, and e) a select housing similar to the first select housing, in which the hook lever of the first select housing is slightly raised from the lowest end position, and the hook lever of the first select housing has the second elongated hole. A second select housing provided at a fixed position so that it can be received by the f), and f) the lower ends of the plurality of threading are provided with a plurality of warp threads of the corresponding jacquard machine, and these warp threads are constantly punched in the opening. Bottom edge position Is connected to a return spring to bring about, g) when the first select housing reaches slightly above the position from the lowermost position in its upstroke,
The biased magnetic pole is made to correspond by selectively pulse-energizing one of the electromagnets in the first or second select housing corresponding to the first or second elongated holes of the plurality of vertical needles. A three-stage shed type warp selection control device of a jacquard machine is configured so that the lever is repulsively driven toward a corresponding longitudinal needle in a homopolar facing relationship with the permanent magnet of the hook lever.

[0009]

According to the above construction, the main plate is at its uppermost end position,
Therefore, when the first select housing occupies its lowermost position, the first and second select housings are in a reset state (hook lever forced retracted state), and from this state, the first select housing is slightly raised (the main plate is When slightly lowered), the hook levers of both select housings face the corresponding first and second elongated holes on one vertical needle, and enter the elongated holes when the corresponding electromagnets are excited. If it is the hook lock of the first select housing, the vertical needle is driven to the upper stage position of the punching opening according to its rise, and if it is the hook lock of the second select housing, Maintain the vertical needle in its locked position (the middle position of the punching opening). As a matter of course, if there is no hook locking operation in both the first and second select housings, the vertical needle descends along the main plate and is brought to the lowest end position (lower position of the punching opening).

In this way, the so-called three-stage opening is formed by occupying the upper, interrupted or lower position of each of the plurality of vertical needles at the time of opening of each operation cycle.

[0011]

1 and 2 show the basic structure of an embodiment. In the figure, 1 is a base plate made of metal or synthetic resin plastic, 2a and 2b are select housings of the same structure made of synthetic resin plastic supported by movable frames 3a and 3b, respectively, and the first one (2a) is virtual. The illustration is simplified by lines.
Reference numeral 4 is a vertical needle fitted to the select housings 2a and 2b and the main plate 1, and the upper end of the thread which is continuous with each warp of the Jacquard machine is tied to the hook formed on the lower end 4a.

Preferably, in FIG. 1, the main plate 1 and the select housing 2a above the main plate 1 vertically and vertically move relative to each other with the intermediate fixed select housing 2b sandwiched therebetween, and at a maximum interval. At the time of reaching, the so-called three-stage warp shed is formed. The vertical needle 4 has a narrowed lower portion 4b which is the main plate 1
Of the select housings 2a and 2b, which are wider than the lower portion 4b, are fitted into the corresponding vertical needle guide passages 6 of the select housings 2a and 2b and are selectively driven by these housings to move together. Alternatively, the guide passage 6 is slidable in the vertical direction. The front surface of the upper part 4c of the vertical needle is exposed from each guide passage 6, but the side edges of the guide passage 6 are provided with edges 7 forming a dovetail groove at a position slightly lower than the upper and lower ends and the middle thereof.
Correspondingly, the step edges 17 formed on both sides of the vertical needle 4 engage with the dovetail groove to maintain the engagement state with the guide passage 6.

In this embodiment, the select housings 2a, 2b are each formed with eight parallel longitudinal needle guide passages 6 (hence, the select housings 2a, 2b).
Is equipped with eight common vertical needles 4. ), A hook lever 9 having a lower end pivotally supported by a fulcrum shaft 8 is provided at a position in each vertical needle guide passage 6 facing the corresponding vertical needle 4. The free end, that is, the upper end portion of the hook lever 9 is located when the select housings 2a and 2b are located slightly above the relative lowermost position with respect to the main plate 1 (in the stationary housing 2b, the lowering of the main plate 1 is started. ) Of the vertical needle 4 and is movable within the corresponding long hole 10 formed in the vertical needle 4. The relative lowermost position is hereinafter referred to as "reset position". Further, in the select housings 2a and 2b, an electromagnet 11 is installed behind the hook lever 9 at a position corresponding to the vicinity of its free end. The electromagnet 11 comprises an E-shaped iron core 12 and a solenoid coil 14 fitted to a central main magnet 13 of the E-shaped iron core 12.

FIG. 2 is a partial cross-sectional view showing a state in which a plurality of pairs of select housings 2a and 2b are aligned in a superposed manner together with the related vertical needle 4, and the longitudinal hole of the vertical needle 4 described above. The relationship between 10 and the hook lever 9 and the electromagnet 11 behind the hook lever 9 is shown in more detail. The state shown in FIG. 2 is a position slightly above the reset position of the select housings 2a, 2b described above, and when the hook lever 9 shown in the figure is driven repulsively by the electromagnet 11, the upper end portion 15 of the hook lever 9 has the length of the vertical needle 4. It will be appreciated that it can be moved into the hole 10. The upper end of the long hole 10 has a locking edge 10a inclined corresponding to the inclined end surface of the hook lever upper end 15, and the inclined cam surface 10b for receiving the floor of the hook lever 9 is formed in the lower portion of the long hole 10. ing. Hook lever 9
A permanent magnet 16 which will be described later is loaded in each of the magnets so that the magnetic pole surfaces on both sides face the front and rear direction of the hook lever.

Next, referring to FIGS. 3 and 4, the electromagnet 11 will be described.
A description will be given of a mode in which the force acts on the permanent magnet 16 of the hook lever 9 to repel it, and a mode in which the hook lever 9 and the vertical needle 4 engage. FIG. 3 shows that when the select housings 2a and 2b described above are slightly separated from the ground plate 1 from their reset positions, the hook lever 9 is attracted by the permanent magnet 16 and the E-shaped iron core 12 of the electromagnet 11. It shows a state in which the solenoid coil 1 of the electromagnet 11 in the select housing 2a or 2b is maintained in a completely upright retracted position.
When 4 is energized by a DC pulse flowing in a predetermined direction,
The central main magnetic pole 13 of the electromagnet 11 has the same magnetic polarity as the facing magnet surface of the permanent magnet 16, and the hook lever 9 is pushed forward by the repulsive action by this, and at that moment, the pulse current that urges the electromagnet 11 is cut off. However, since the permanent magnet 16 of the hook lever 9 is already sufficiently separated from the support pole 13 of the electromagnet 11, the permanent magnet 16 of the hook lever 9 swings due to inertia without generating an attractive force between the permanent magnet 16 and the supporting pole 13 of the electromagnet 11 again.
Eventually, the front end magnetic pole surface of the permanent magnet 16 with respect to the magnetic body (in this case, the rear yoke 12a of the E-shaped iron core 12 at the corresponding position in the front adjacent select housing) located in front of the corresponding long hole 10 of the vertical needle 4 will be described. The tilted position indicated by the imaginary line is maintained by the attractive force. The hook lever 9
The tip end of the contact portion also contacts the electromagnet support portion of the select housing 2a or 2b (not shown) adjacent to the front side, and does not tilt further. Since this tilt angle is a minute angle of several degrees or less,
It can be said that the hook lever 9 is still in a substantially upright position. In this state, the tip portion 15 of the hook lever 9 is located immediately below the locking edge 10a of the elongated hole 10, and the front main portion of the hook lever 9 contacts the inclined surface 10b forming the lower end portion of the elongated hole 10.

At this time, the ascending stroke of the upper select housing 2a and the descending stroke of the main plate 1 have just started, and when the stroke further progresses, the tip end portion 15 of the hook lever 9 engages with the locking edge 10a of the elongated hole 10. The bottom plate which completely abuts on the upper select housing 2a, and in the case of the upper select housing 2a, moves upward together with this housing to push its locking edge, and drives the corresponding vertical needle 4 upward, and in the case of the select housing 2b, lowers. The vertical lowering of the vertical needle 4 accompanied by 1 will be prevented. Therefore, when the ascending stroke of the select housing 2b and the descending stroke of the main plate 1 are completed, the corresponding warp threads are lifted up to the upper stage by the select housing 2a by the threading connected to the interlocking vertical needles 4, or by the select housing 2b. A so-called three-stage opening is formed between the warp yarn which is maintained in the middle stage (the blocking position) and is lowered to the lower stage together with the main plate 1 without receiving any engagement operation of the housing. After the punching is performed within a certain opening formation time, the lowering of the select housing 2a and the raising of the main plate 1 are started, and when both housings approach the reset position again, the vertical needle 4 is stopped by the main plate,
The upper ends 15 of the hook levers 9 of both the select housings 2a and 2b have vertical needles 4 as shown by phantom lines in FIG.
Has a certain gap from the locking edge 10a of the hook lever 9
The main part of the front surface of the contacting portion abuts on the slope 10b of the elongated hole 10. When the select housings 2a and 2b are still slightly closer to the main plate 1, the front face of the hook lever 9 in the elongated hole 10 slides on the inclined face 10b and is pushed rearward by the cam action. The permanent magnet 16 instantly tries to attract the main magnetic pole 13 of the electromagnet 11 of the select housing 2a or 2b, and maintains the completely upright position again. In this state, the select housings 2a and 2b driven to the reset position again enter the time zone in which the separation from the main plate 1 is enlarged, and the position where the electromagnet 11 can selectively energize, that is, the energizable position (see FIG. 3), and the same warp selection and opening forming cycle as described above is repeated thereafter.

FIGS. 5 to 7 show a case where a lower opening position is formed (FIG. 5), a middle opening position is formed (FIG. 6), and an upper opening position in the three-stage opening formation by the above-described apparatus of the present invention. The case of forming the positions (FIG. 7) is schematically illustrated, and each shows the process from the reset position (a) through the energizable position (b) to each opening formation state (c). That is, in order to obtain the lower position (c) in FIG. 5, at the energizable position (b), the electromagnets of any of the select housings are not excited, and the hook lever 9 remains in the completely upright state. To obtain the position (c), at the energizable position (b), the electromagnet of the lower select housing 2b is excited to engage the hook lever 9 with the corresponding elongated hole 10, and the upper position (c) of FIG. It will be appreciated that in order to obtain, in the energizable position (b), the upper select housing 2a is energized to engage its hook lever 9 with the corresponding slot 10.

FIG. 2 described above shows the select housing 2
FIG. 8 shows a state in which the pairs a and 2b are aligned in a superposed manner. For example, as shown in FIG. 8, each column of the matrix shown by 8 rows and 10 columns handles each one of the eight vertical needles 4. It is a pair of select housings and is applied to 80 warps of an actual jacquard machine in a state where 10 of them are stacked. A plurality of filaments shown below the matrix indicate the warp arrangement in the jacquard machine, and in the embodiment, the leftmost warp # 1 to # 80 are sequentially the first warp.
The vertical needle matrix 18 of FIG. In this case, the first to eighth warp yarns are processed by the first to eighth vertical needles 4 of the select housing pair 2 in the first row, and the ninth to 16th warp yarns are processed.
The 1st to 8th warp needles 4 in the select housing pair 2 in the 2nd row are operated respectively, and thus the 80th warp is the 80th warp in the select housing pair 2 in the 10th row. The eighth vertical needle 4 is operated. In the same manner, the second warp needle matrix 19 is formed by 10 select housing pairs, whereby the 81st warp yarns to the 160th warp yarns are handled.

According to the present invention, the warp yarns are divided into blocks in this way, and a set of select housings positioned right above each of the blocks is applied. It is clear that the angles do not differ significantly between their maximum and minimum values.

[0020]

As described above, according to the present invention, since the electromagnet is pulse-driven to construct the lock selection control device by the vertical double needle type simultaneous multiple operation in which the driving power is reduced, the three-stage opening is formed in the jacquard machine. This is a very compact facility configuration that can be achieved at low cost.

Further, when a plurality of select housing pairs of the present invention are aligned in a superposed manner, a magnetic body as driving force assisting and engaging position holding means, which replaces the conventional spring, is not provided for the front row housing. Can be installed in the jacquard machine very effectively in combination with the shortening of the threading without special provision.

The E-shaped iron core of the electromagnet forms a complete magnetic circuit between the central main magnetic pole, the auxiliary poles on both sides, and the rear yoke even when it is excited, so that even when the electromagnet is excited. The rear surface of the yoke portion acts as a magnetic body having no polarity and directly acts on the rear permanent magnet.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a select housing according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional side view showing a part of a state where the select housing pairs of FIG. 1 are arranged in a superposed manner.

FIG. 3 is a partial side sectional view showing a relationship between a hook lever and a corresponding vertical needle 4 in a select housing at a vertical needle selectable position.

FIG. 4 is a partial side view similar to FIG. 3, showing an engagement state between a vertical needle and a hook lever in the select housing.

FIG. 5 is a schematic diagram of a process of forming a lower stage of a three-stage opening by the apparatus of the present invention.

FIG. 6 is a schematic diagram of a process of forming a middle stage of a three-stage opening by the apparatus of the present invention.

FIG. 7 is a schematic diagram of a process of forming an upper stage of a three-stage opening by the apparatus of the present invention.

FIG. 8 is a schematic view showing a correspondence relationship between the overlapping arrangement and the locking arrangement of the select housing pair of the present invention.

[Explanation of symbols]

 1 Main plate 2a, 2b Select housing 3a, 3b Movable frame 4 Vertical needle 4a Vertical needle lower end 4b Vertical needle lower part 4c Vertical needle upper part 5 Insertion hole 6 Vertical needle guide passage 7 Edge 8 Support point shaft 9 Hook lever 10 Long hole 10a Locking edge 10b Long hole slope 11 Electromagnet 12 E-type iron core 12a Iron core rear yoke 13 Main magnet 14 Solenoid coil 15 Hook lever tip 16 Permanent magnet 17 Step edge

Claims (1)

[Claims] 1. A) The lower end guides the lower portions of a plurality of vertical needles each connected to a plurality of threading yarns, and restrains the relative heights of these vertical needles from falling below a certain level. And b) a plurality of penetrating vertical needle guide passages that respectively guide the main body of the plurality of vertical needles are arranged in parallel to the front side above the main plate, and A select housing that moves up and down in opposite phases so as to selectively engage with vertical needles and move toward and away from the main plate, and a vertical direction passing through the vertical needle passages on the back side corresponding to each vertical needle guide passage. In the hook lever equipped to swing within a minute angle range of a substantially upright state in the direction of approaching and separating from the back surface of the needle, a permanent magnet mounted near the free end of the hook lever, and the permanent magnet Facing each other An electromagnet mounted at a position opposite to the vertical needle passage, the magnetic pole facing the permanent magnet, a yoke part connected to the magnetic pole root, and an auxiliary pole protruding from the other end of the yoke part in the same direction as the magnetic pole. And a first select housing each of which includes: and c) allowing the hook lever to approach at a position slightly higher than a lowermost end position where the first select housing approaches the main plate. In order to receive the lever, it is a long hole provided in each of the vertical needles along the length thereof, and the upper end of the received hook lever is locked at the upper end of the vertical needle as the lever is raised. A locking edge for raising the vertical needle of the lever is formed, and when the select housing moves to the lowermost position at the lower end, it is stopped at the lower end position by the main plate first. A first elongated hole in which a cam surface for pushing back the hook lever in the elongated hole to the outside of the elongated hole is continuously provided at the vertical needle position, and d) in each of the plurality of vertical needles, A second elongated hole similar to the first elongated hole provided below the first elongated hole at a constant interval, and e) a select housing similar to the first select housing, A second select housing provided at a fixed position so that its hook lever can be received in the second elongated hole at a position slightly elevated from the lowermost position of the first select housing, f). The lower ends of the plurality of threading are connected to a plurality of warp threads of the corresponding jacquard machine and a return spring that always tries to bring these warp threads to the lowest end position of the punching opening, g) the first Select housing Has reached a position slightly above the lowermost position in its ascending stroke,
The biased magnetic pole is made to correspond by selectively pulse-energizing one of the electromagnets in the first or second select housing corresponding to the first or second elongated holes of the plurality of vertical needles. A three-stage shed type warp selection control device for a jacquard machine, characterized in that the hook lever has a permanent magnet facing each other and is repulsively driven toward a corresponding longitudinal needle.