JPH07150439A - Device for selecting and controlling warp of jacquard machine - Google Patents

Abstract

PURPOSE:To provide a control device for selecting warp of a jacquard machine by pulse excitation of an electric magnet without a return spring. CONSTITUTION:Plural hook guide passageways 6 for guiding the top of plural hooks 4 are arranged at a front side. A select housing 2 to be selectively engaged with the hooks 4 and to relatively raise and drop the hooks with respect to a plate 1 is equipped at the back side of each hook guide passageway 6 with (1) a hook lever 9 furnished in order to rock in the direction to come into contact with and to separate from the back of the hooks 4, (2) a permanent magnet 16 fixed in the vicinity of a free end of the hook lever 9 and (3) an electro-magnet 11 having an E type iron core 12, opposing to the permanent magnet 16, laid at the opposite side of the hook passageway. The hooks 4 are equipped with a slotted hole 10 which allows approach of the hook lever 9 and receives the hook lever and side by side with a cam face 10b for forcing back the hook lever 9 in the slotted hole 10 to the outside of the slotted hole.

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 a loom, particularly 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.

[0003]

SUMMARY OF THE INVENTION The present invention is a method of repulsively driving a hook equipped with a permanent magnet by a solenoid, and has a drawback of the conventional vertical needle selection method which is dependent on the return elasticity of the return spring after a momentary repulsion. In order to eliminate it, instead of the return spring, on the vertical needle selection device assembly, the front magnet portion that appears at that position attracts the permanent magnet of the hook member, which results in low manufacturing cost, low driving power, and stable operation. It is intended to provide an operable warp selection control device.

[0004]

In order to solve the above problems, the present invention provides: a) a lower end of a plurality of vertical needles each having a lower end connected to a plurality of threading yarns, and a lower end of a vertical needle stroke. B) a plurality of vertical needle guide passages that respectively guide the upper portions of the plurality of vertical needles are arranged on the front side, and selectively engage with the vertical needles so that A select housing for driving up and down relative to each other, on the rear side corresponding to each vertical needle guide passage, a minute angle in a state of being substantially upright in the direction of approaching and separating from the back surface of the vertical needle passing through the vertical needle guide passage. With a hook lever equipped to swing within the range,
A permanent magnet mounted near the free end of the hook lever,
And an electromagnet mounted at a position on the opposite side of the longitudinal needle passage facing the permanent magnet, the magnetic pole facing the permanent magnet, a yoke part connected to a magnetic pole root, and the other end of the yoke part from the yoke part. And a select housing having auxiliary poles protruding in the same direction as the magnetic poles, and c) a position slightly above the lowermost end position of the select housing with respect to the main plate. A locking edge for allowing the hook lever to approach and allowing it to be received, and for locking the upper end of the received hook lever to lift the vertical needle as the lever moves up. Is formed at the upper end of the elongated hole, and when the select housing relatively moves to the lowest end position, the lower end position of the descending stroke is first moved by the main plate. A cam surface for pushing back the hook lever in the long hole to the outside of the long hole is connected to the lower end of the long hole in the vertical needle that is regulated. When reaching a position slightly above the lowest end position in the stroke, the plurality of electromagnets are selectively pulse-energized so that the biased magnetic poles face the corresponding permanent magnets of the hook levers with the same polarity. As a relation, this lever is repulsively driven toward the corresponding vertical needle.

According to the present invention, a plurality of select housings of the same standard are prepared, the housings are aligned and overlapped in the same direction, and a large number of longitudinal needles cooperating with these housings are arranged in the same jacquard machine. By applying to
When the hook lever repulsively driven by the electromagnet corresponding to each vertical needle guide passage in each housing swings into the elongated hole of the corresponding vertical needle due to inertia, the housing adjacent to the front side of this housing The yoke portion of the electromagnet at the corresponding position attracts the magnetic pole as a magnetic body to which the magnetic field lines of the front pole of the permanent magnet of the swinging hook lever extend, and promotes swinging of the hook lever, and the elongated hole. It is intended to maintain a complete transfer status to.

According to the present invention, the metal plate or the metal array is applied to at least the position corresponding to the permanent magnet of the hook lever array on the front surface of the frontmost select housing, so that the metal plate or the metal array is provided in the housing. The hook lever is made to act as the magnetic body for promoting the swing of the permanent magnet and for maintaining the inside of the long hole.

Further, in the present invention, the number of aligned overlaps of the select housings is set to a number applicable to all warp yarn arrangements of the same jacquard machine, and these many select housings are divided into a plurality of blocks, and one block from one block to the other end. It is configured such that one end to the other end of the warp yarn array is sequentially covered over the blocks.

[0008]

According to the basic construction of the present invention, the hook lever repulsively driven by the electromagnet is located in the corresponding hook lever receiving long hole of the vertical needle, and further, when the relative housing is continuously raised, the hook lever is hooked. When the upper end of the lever abuts the upper end 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, and this vertical needle and the vertical needle that was not driven up are respectively connected. An opening is formed between the warp threads, and then, at the end of the housing descending stroke for closing the opening, the hook lever is moved out of the long hole by the cam surface of the vertical needle whose lower end is regulated by the ground plate. It is pushed back to the initial state and the 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 elongated 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.

According to the present invention, in the above-mentioned magnetic body, in the select housing other than the frontmost one of the plurality of select housings in the overlapping arrangement, the yoke portion of the corresponding electromagnet of the housing adjacent to the front side of the housing is magnetic. It plays the role of a body, and at the position corresponding to the permanent magnet of the hook lever arrangement on the front surface of the frontmost select housing, it can be made to act as the magnetic body by applying a metal plate or a metal arrangement.

In the present invention, as described above, a large number of select housings are divided into a plurality of blocks, and the locking selection range is limited for each division to keep the deviation angle of the threading with respect to the vertical line within a small angle range. As a result, it is possible to extremely easily install and adjust the jacquard machine.

[0012]

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, 2 is a select housing made of synthetic resin plastic supported by a movable frame 3, and 4 is a vertical needle fitted to the select housing 2 and the base plate 1, The hooks formed on the lower end 4a are tied to the upper ends of the warp threads connected to the warp threads of the Jacquard machine.

Preferably, in FIG. 1, the main plate 1 and the select housing 2 above the main plate 1 vertically and vertically move relative to each other in a manner of approaching and separating from each other, and a warp yarn opening is formed at the time of folding back when the maximum distance is reached. To do. The vertical needle 4 has a narrowed lower portion 4b inserted into a corresponding insertion hole 5 of the main plate 1, and an upper portion 4c wider than the lower portion 4b is inserted into a corresponding vertical needle guide passage 6 of the select housing, so that the vertical needle 4 is selectively Driven by the housing and move together,
Alternatively, it is slidable in the guide passage 6 in the vertical direction. The front surface of the upper portion 4c of the vertical needle is exposed from the guide passage 6, and the side edge of the guide passage 6 is provided with a rim 7 that forms a 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 housing 2 is formed with eight parallel vertical needle guide passages 6 (thus, the select housing 2 is equipped with eight vertical needles 4). A hook lever 9 having a lower end pivotally supported by a fulcrum shaft 8 is provided at a position facing the corresponding vertical needle 4 in the vertical needle guide passage 6. This hook lever 9
The free end, that is, the upper end, is a position movable in the elongated hole 10 formed in the corresponding vertical needle 4 at a position slightly above the lowermost end position with respect to the main plate 1 of the select housing 2. Further, in the select housing 2, 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 arrangement view showing a state in which a plurality of select housings 2 are aligned and arranged together with the associated vertical needles 4, and the elongated hole 1 of the vertical needles 4 described above is shown.
0, hook lever 9 and electromagnet 1 behind hook lever 9
The relationship with 1 is shown in more detail. The state of FIG. 2 is
The above-mentioned hook lever 9 is located slightly above the lowermost position of the main plate 1 of the select housing 2, and when the hook lever 9 shown in FIG.
It will be appreciated that can be moved into the slot 10 of the longitudinal needle 4. 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. The hook lever 9 is loaded with permanent magnets 16 to be described later with their magnetic pole surfaces facing the front-back 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. In FIG. 3, when the above-described select housing 2 is raised to a position slightly above the relative lowermost position, the hook lever 9 is completely erected by the attraction action of the permanent magnet 16 and the E-shaped iron core 12 of the electromagnet 11. This state is maintained in the retracted position, and when the solenoid coil 14 of the electromagnet 11 is energized by a DC pulse flowing in a predetermined direction from this state, the central main magnetic pole 13 of the electromagnet 11 faces the permanent magnet 16. It has the same magnetic polarity as the magnet surface, and the repulsive action caused by this causes the hook lever 9 to be pushed forward, and at that moment, the electromagnet 11
Although the pulsed current that has urged the magnetism is cut off and its exciting action is lost, the permanent magnet 16 of the hook lever 9 is already sufficiently separated from the support pole 13 of the electromagnet 11, so that an attractive force is not generated between it again. Permanent magnet for the magnetic body (in this case, the rear yoke 12a of the E-shaped iron core 12 at a corresponding position in the front adjacent select housing) that swings due to inertia and is located in front of the corresponding elongated hole 10 of the vertical needle 4 in due course. The front end magnetic pole surface of 16 maintains the tilted position indicated by the imaginary line by the attractive force. The tip of the hook lever 9 also comes into contact with the electromagnet support portion of the select housing 2 (not shown) adjacent to the front side, and does not tilt further. Since this inclination 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 state.
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 is the inclined surface 10b forming the lower end portion of the elongated hole 10.
Abut.

At this time, the select housing 2 has just started the ascending stroke from its lowermost end position to its uppermost end position.
The distal end portion 15 of the above completely abuts on the locking edge 10a of the elongated hole 10, and further rises together with the select housing 2 to push the locking edge and drive the corresponding vertical needle 4 upward. Therefore, when the select housing moves to the uppermost end of its ascending stroke, the corresponding warp thread is lifted by the threading connected to the interlocking vertical needles 4, and the punching opening is formed. After the punching is performed within a certain opening formation time, the select housing 2 starts to move downward, and when it descends to a position slightly above the lowermost position again, the vertical needle 4 is stopped by the main plate and the upper end of the hook lever 9 is stopped. Part 15 is shown in FIG.
As shown by the phantom line, the hook bar 9 has a constant gap from the locking edge 10a of the vertical needle 4, and the main front portion of the hook lever 9 abuts the slope 10b of the elongated hole 10. When the select housing is still lowered slightly, the front of the hook lever 9 is the slope 10
b is slid on b and receives a cam action, and is pushed rearward, and the permanent magnet 16 instantly tries to attract the main magnetic pole 13 of the electromagnet 11 of the select housing 2 and maintains the complete upright position again. To do. In this state, the select housing 2 driven to the lowermost position
Enters the ascending stroke again to the position where the electromagnet 11 can selectively energize as described above (FIG. 3), and thereafter, the same warp selection and opening forming cycle as described above is repeated.

FIG. 2 shows a state in which the select housings 2 are aligned in a superposed manner. For example, as shown in FIG. 5, each column of the matrix shown by 8 rows and 10 columns has 8 vertical needles 4. It is one select housing for handling each of the above, 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 warp threads # 1 to # 80 at the left end thereof are arranged by the first warp matrix 18 in sequence. Operated. In this case, the first to eighth warps are the first to eighth vertical needles 4 of the first row select housing 2.
Process, the 9th to 16th warp threads are respectively operated by the 1st to 8th warp needles 4 in the select housing 2 of the 2nd row, and thus the 80th warp thread is the 10th warp thread.
Eighth vertical needle 4 in the select housing 2 of the row
Will be operated. In the same manner, the second warp needle matrix 19 having 10 select housings is formed, and thereby, 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 spring is not used, the mechanism is simple and the manufacturing cost is low.
Since the electromagnet is pulse-driven, the present invention provides a lock selection control device that has a small driving power and few failures.

Further, since a plurality of select housings of the present invention are aligned in a superposed manner, it is not necessary to provide a magnetic material as a driving force assisting means and an engagement position holding means in place of the conventional spring except for the housing in the front row. Combined with the shortening of the threading, it can be effectively installed in the jacquard machine.

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 housings 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 view showing a correspondence relationship between the overlapping arrangement and the locking arrangement of the select housing of the present invention.

[Explanation of symbols]

 1 main plate 2 select housing 3 movable frame 4 vertical needle 4a lower end of vertical needle 4b lower part of vertical needle 4c upper part of vertical needle 5 insertion hole 6 vertical needle guide passage 7 edge 8 fulcrum 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 (4)

[Claims] 1. A bottom plate for guiding a lower part of a plurality of vertical needles each having a lower end connected to a plurality of threading lines and for restricting a lower end of a vertical needle stroke, and b) a plurality of vertical needles. A select housing for arranging a plurality of vertical needle guide passages for guiding the upper part on the front side and selectively engaging a vertical needle to vertically drive the vertical needle with respect to the main plate. On the back side corresponding to the needle guide passage, a hook lever equipped so as to swing within a minute angle range of a substantially upright state in a direction approaching and separating from the back surface of the vertical needle passing through the vertical needle guide passage,
A permanent magnet mounted near the free end of the hook lever,
And an electromagnet mounted at a position on the opposite side of the longitudinal needle passage facing the permanent magnet, the magnetic pole facing the permanent magnet, a yoke part connected to a magnetic pole root, and the other end of the yoke part from the yoke part. And a select housing having auxiliary poles protruding in the same direction as the magnetic poles, and c) a position slightly above the lowermost end position of the select housing with respect to the main plate. A locking edge for allowing the hook lever to approach and allowing it to be received, and for locking the upper end of the received hook lever to lift the vertical needle as the lever moves up. Is formed at the upper end of the elongated hole, and when the select housing relatively moves to the lowest end position, the lower end position of the descending stroke is first moved by the main plate. A cam surface for pushing back the hook lever in the long hole to the outside of the long hole is connected to the lower end of the long hole in the vertical needle that is regulated. When reaching a position slightly above the lowest end position in the stroke, the plurality of electromagnets are selectively pulse-energized so that the biased magnetic poles face the corresponding permanent magnets of the hook levers with the same polarity. The warp selection control unit of the jacquard machine is characterized in that the lever is repulsively driven toward the corresponding vertical needle. 2. A plurality of the select housings of the same standard as set forth in claim 1 are prepared, the respective housings are aligned in the same direction and overlap each other, and a large number of vertical needles cooperating with these housings are provided with the same jacquard. When applied to the warp arrangement of the machine, when the hook lever repulsively driven by the electromagnet corresponding to each longitudinal needle guide passage in each housing swings into the corresponding elongated hole of the corresponding longitudinal needle by inertia,
The yoke portion of the electromagnet at a corresponding position of the housing adjacent to the front side of the housing attracts the magnetic pole as a magnetic body to which the magnetic force line of the front magnetic pole of the permanent magnet of the swinging hook lever extends. A warp selection control device for a jacquard machine, which promotes swinging and maintains a completely transferred state into the elongated hole. 3. A metal plate or a metal array is applied to a position corresponding to at least a permanent magnet of the hook lever array on the front surface of the frontmost select housing, and the metal plate or the metal array is attached to the hook lever of the housing. 3. The warp selection control device according to claim 2, wherein the warp selection control device acts as the magnetic body for promoting swinging of the permanent magnet and maintaining the long hole. 4. The number of aligned overlaps of the select housings is set to a number that can be applied to all warp thread arrangements of the same Jacquard machine, and these many select housings are divided into a plurality of blocks, and the warp threads from one block to the other block are divided. The warp selection control device according to claim 2 or 3, wherein the one end portion to the other end portion of the array are sequentially handled.