JP2789324B2 - Jacquard machine warp selection controller - Google Patents

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, in particular, 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 the types, for example, a vertical needle connected to each one warp is selectively driven by a lifting hook mechanism to form an upper half opening of a warp, and a non-engaged vertical needle is formed. There is a mechanism in which the lower half opening is formed by being directly driven by its own support guide mechanism (base plate), and thereby a complete shed opening is selectively formed. An electromagnet is generally used to engage or release the vertical needle with the hook.In consideration of the electric energy consumption, in recent electronic jacquard, the hook is moved from the standby state to the vertical needle engagement position. The electromagnet is energized only for the moving time. In addition, a permanent magnet is used at a position on the hook element opposite to the solenoid core, and the hook is always detached by the attraction force to the non-excited core by the magnetic field of the permanent magnet, and the permanent magnet is repelled by the solenoid core. There is also a method in which an exciting current is supplied as a pulse and the restoring force of the return spring is applied to bring the state to another state (Japanese Utility Model Laid-Open No. 4-118483).
In the latter method, the solenoid can be energized only by energizing one pulse, thereby completely performing a hook selecting operation to relatively reduce power consumption and minimize the heat generation of the solenoid. The adjustment of the magnetic force of the magnet and the strength of the spring is delicate, and a malfunction may occur due to deterioration of the spring.

Further, in a system in which a hook equipped with a permanent magnet is repulsively driven from behind by an electromagnet, a hook is provided by a rear magnetic body of a front row device appearing in front of the device by a matrix arrangement of vertical needle selection devices instead of a return spring. In order to attract the permanent magnet of the member, the magnetic field of the permanent magnet is arranged so as to diverge and converge in the front-rear direction, and the solenoid wound magnetic pole for performing the repulsion drive is arranged opposite to the rear, and thereafter, There is also a hook drive structure whose end is connected to a magnetic yoke serving as the rear magnetic body (Japanese Patent Publication No. 7-84688).

However, in this structure, the solenoid-wound magnetic pole protruding forward facing the permanent magnet of the lever can take only a small length, and the outer diameter of the solenoid coil wound around this small length is equal to that of the vertical needle row. Because it is regulated by the interval,
The inductance is extremely small, and eventually a large current is required to obtain an ampere-turn (magnetomotive force). However, if the current is suppressed to the extent that coil burning does not occur, there is a disadvantage that the hook lever cannot be driven satisfactorily.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a system in which a hook equipped with a permanent magnet is repulsively driven by a solenoid. An object of the present invention is to provide a warp selection control device which can be brought to a position where it can be engaged with a vertical needle only by its repulsive driving force based on an extremely small exciting current.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides: a) a lower end which guides a lower portion of a plurality of vertical needles respectively connected to a plurality of threading yarns; B) a plurality of vertical needle guide passages for guiding the upper portions of the plurality of vertical needles, respectively, are arranged on the front side, and selectively engage with the vertical needles, and A select housing for relatively ascending and descending drive, in a small angle range slightly inclined forward from the upright state corresponding to the back surface of the vertical needle passing through the passage on the back side corresponding to each vertical needle guide passage. A hook lever provided so as to be able to swing in the direction of coming and going to the back surface of the vertical needle, and a permanent magnet protruding from the vicinity of the free end of the hook lever to the back side, and both pole faces of the hook Substantially through the range of lever swing angle And an electromagnet mounted at a position opposite to the vertical needle passage corresponding to the permanent magnet, and when the power supply is deenergized, the hook lever is In a state free from the vertical needle, the lever is pulled to the rear end of the angle range by magnetic attraction with the permanent magnet to allow the permanent magnet to play and to oppose both pole surfaces to form the shortest magnetic circuit. And a select housing including an iron core having a pair of magnetic poles as described above, and c) the vertical needle has a hook lever at a lowermost position with respect to the base plate of the select housing. A long hole is provided to allow access and receive it, and the upper end of the hook lever thus received is locked with the relative elevation of the select housing. By forming a locking edge at the upper end of the elongated hole for raising the vertical needle with the rise of the lever, the vertical needle moves when the select housing relatively moves to the lowermost position. , The lower end position of which is locked by the base plate, and the lower end position of which is regulated earlier than the select housing. After further lowering to the lowermost position, the locked state is completely released and the needle is released from the vertical needle. D) When the select housing starts a relative ascent stroke with respect to the main plate, The hook lever having the permanent magnet is correspondingly driven by selectively exciting the electromagnet by direct current, and repulsively driving the permanent magnet, which is engaged between the pair of magnetic poles, in the same polarity opposing relationship. In this case, the time width of the direct current excitation is adjusted by the upper end of the hook lever received in the elongated hole of the vertical needle, and the upper end of the elongated hole with the relative elevation of the select housing. And a warp selection control unit of a Jacquard machine which is configured to be maintained until locked.

[0007] The present invention also provides a plurality of select housings of the same standard, aligns and superimposes each housing, and applies a plurality of vertical needles cooperating with these housings to the warp arrangement of the same Jacquard machine. It is like that.

In the present invention, the number of superposed select housings may be set to a number applicable to all warp arrangements of the same jacquard machine, and the plurality of select housings may be divided into a plurality of blocks. In this configuration, one end to the other end of the warp arrangement is sequentially assigned to the blocks.

According to the basic configuration of the present invention described above, the hook lever having the permanent magnet repelled and driven in the small air gap by the excitation of the electromagnet is positioned in the hook lever receiving slot of the corresponding vertical needle. Further, the energization is released when the upper end of the hook lever abuts and engages with the upper end locking edge of the elongated hole in the continued relative rise of the select housing. The hook lever pushes up the vertical needle in the mechanically engaged state, raises the corresponding vertical needle to the upper end of the housing ascent stroke, and forms an opening between the warp connected to this vertical needle and the vertical needle that has not been driven up. Then, at the end of the housing descending stroke for closing the opening, the hook lever released mechanically engaged from the upper edge of the long hole of the vertical needle whose lower end of the descending stroke was previously regulated by the main plate, It is pulled out of the elongated hole and returned to the reset state by the magnetic attraction of the permanent magnet held by it and the magnetic pole means of the demagnetized electromagnet, and thereafter such an opening forming operation is continuously and selectively performed. Will be

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 of the sections to maintain the deflection angle of the thread relative to the vertical line in a small angle range. This makes it extremely easy to assemble and adjust the jacquard machine.

[0011]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[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 on a movable frame 3, and 4 is a vertical needle fitted to the select housing 2 and the base plate 1, The upper end of the thread connected to each warp of the Jacquard machine is connected to the hook formed at the lower end 4a. In these drawings, the portion of the select housing 2 is a view of the inside thereof from a position immediately after the housing front plate (2a: FIGS. 3 and 4).

In FIG. 1, the base plate 1 and the select housing 2 above the base plate 1 are relatively and periodically moved up and down so as to approach and separate from each other. Is what you do. The vertical needle 4 has a narrower lower part 4b fitted into a corresponding insertion hole 5 of the main plate 1, and an upper part 4c wider than the lower part 4b is formed in a corresponding side wall or partition wall of the select housing. 6 and is selectively driven by the housing to move together or
It slides up and down inside. The front surface of the upper part 4c of the vertical needle is always exposed from the guide passage 6. Preferably, a side edge of the guide passage 6 is formed at an appropriate position between the upper end and the lower end thereof to form a groove (not shown), and a corresponding step edge is formed on both sides of the vertical needle 4. The engagement with the guide passage 6 is maintained by engaging with the groove.

In the present embodiment, the select housing 2 is formed with eight parallel vertical needle guide passages 6 (therefore, the select housing 2 is equipped with eight vertical needles 4). At a position facing the corresponding vertical needle 4 in the vertical needle guide passage 6, a hook lever 8 whose lower end is pivotally supported by a fulcrum shaft 7 is provided. This hook lever 8
A bracket side plate 9 protruding upward and rearward is fixed to a free end, i.e., an upper end portion, and a permanent magnet 1
0 is protruded, and the distal end of the lever 8 itself can be moved into the corresponding long hole 11 formed in the vertical needle 4 at the lowermost position with respect to the main plate 1 of the select housing 2. Further, as shown in an enlarged manner in FIG. 2 (A side) and FIG. 3, in the select housing 2, an electromagnet 12 is provided above the hook lever 8 at a position corresponding to the vicinity of its free end. The electromagnet 12 is folded forward at upper and lower ends 13a, 13
b, a core portion comprising a back yoke 13 having an upper end b, a rod-shaped magnetic core 14 extending from the upper end folded portion 13a in parallel with the vertical needle 4 and extending to near the tip of the hook lever 8, and the magnetic core 1 thereof.
4 is constituted by a solenoid coil 15 wound around.

FIG. 3 is a partial cross-sectional view showing a state in which a plurality of select housings 2 are arranged in a superposed manner together with the associated vertical needles 4.
1 and hook lever 8 and electromagnet 1 behind hook lever 8
2 is shown in more detail. The state in FIG.
If the above-described select housing 2 is at the lowermost position with respect to the main plate 1 and the hook lever 8 shown is repelled by the electromagnet 12, the upper end of the main body can be moved into the elongated hole 11 of the vertical needle 4. Will be appreciated. The upper end of the elongated hole 11 is a locking edge 11a inclined corresponding to the inclined end surface of the upper end of the hook lever 8 main body. The permanent magnet 10 supported by the upper end bracket 9 of the hook lever 8 fits between the front end (lower end) 14a of the magnetic core 14 and the folded back end 13b of the yoke at the normal reset position, and turns both pole surfaces upward and downward. The magnetic circuit which has the least reluctance with respect to its diverging and converging magnetic fluxes is closed.

Next, referring to FIG. 3 and FIG.
Act on the permanent magnet 10 of the hook lever 8 to repel it, and a manner in which the hook lever 8 and the vertical needle 4 are engaged. FIG. 3 shows a state in which the above-described select housing 2 is located at its relative lowermost position, and the hook lever 8 is in a retracted position in which the hook lever 8 is almost upright due to the attraction between the permanent magnet 10 and the yoke 13 and the magnetic core 14 of the electromagnet 12. This shows a state in which the permanent magnet 10 is maintained between the leading end 14a of the magnetic core 14 and the folded back end 13b of the yoke 13. From this state, the DC or pulse current in which the solenoid coil 15 of the electromagnet 12 flows in a predetermined direction for a short time is shown. , The tip 14a of the magnetic core and the folded yoke 13b of the electromagnet 12 become magnetic poles of the same polarity as the facing magnetic pole surfaces of the permanent magnet 10, and the permanent magnet 1
The hook lever 8 holding 0 is tilted forward, and its tip is positioned in the elongated hole 11 of the vertical needle 4 with its tip abutting on the front plate 2a of the select housing 2. Electromagnet 1
At the same time as the DC excitation of
And the upper end of the hook lever 8 abuts on the upper end locking edge 11a of the long hole of the vertical needle 4 which is stationary with respect to the main plate 1 as shown in FIG. Is done.

At this point, the DC excitation ends, but the hook lever 8 further moves up together with the select housing 2 to push the locking edge 11a, thereby driving the corresponding vertical needle 4 up. In this case, since the front end face of the hook lever 8 and the locking edge 11a of the long hole that comes into surface contact with the front end face are inclined forward and downward, the hook lever 8 receives the forward cam pressing force and receives the frontward pressing force of the select housing. It is maintained in this engaged position in contact with 2a. Then, when the select housing moves to the uppermost end of the ascending stroke, the corresponding warp is lifted by the thread connected to the associated vertical needle 4, and a shed opening is formed. After the shed is performed within a certain opening forming time, the select housing 2 starts to move downward, and when the select housing 2 again lowers slightly to the lowermost position, the vertical needle 4 is stopped by the main plate and further lowers slightly. The upper end of the hook lever 8 has a certain gap from the locking edge 11a of the vertical needle 4, and is released from the engagement state therewith.
As a result, the permanent magnet 10 moves rearward to attract the iron core of the electromagnet 12 of the select housing 2, and is returned to the completely reset position between the magnetic poles formed by the core tip 14a and the yoke lower end 13b. In this state,
The select housing 2 driven to the lowermost position is again in a state where it can be selectively biased by the electromagnet 11 as described above (FIG. 3). Thereafter, the ascending stroke is started, and the same warp selection and shedding forming cycle as described above is repeated. It is.

FIG. 3 shows a state in which the select housings 2 are aligned in a superimposed manner. For example, as shown in FIG. 5, each column of a matrix shown in 8 rows and 10 columns has eight vertical needles 4. , Each of which is applied to 80 warps of an actual jacquard machine in a state where ten select housings are stacked. The plurality of filaments shown below the matrix indicate the warp arrangement in the jacquard machine. In the embodiment, the first vertical needle matrix 18 sequentially extends from the left end of warp # 1 to # 80. Operated. In this case, the first to eighth warps are the first to eighth vertical needles 4 of the select housing 2 in the first row.
The ninth to sixteenth warps are respectively operated by the first to eighth warp needles 4 in the select housing 2 in the second row, and thus the eighty-eighth warp becomes the tenth warp.
Eighth vertical needle 4 in select housing 2 in row
Will be operated. Similarly, a second vertical needle matrix 19 composed of ten select housings is formed, thereby handling the 81st to 160th warps.

According to the present invention, since the warp is divided into blocks as described above and a set of select housings located immediately above each block is applied to each block, the size of the warp connecting the vertical needle and the warp or It is clear that the angles do not differ so much at their maximum and minimum values.

[0020]

According to the present invention, since no spring is used, the mechanism is simple, the manufacturing cost is low, and
Normally, the iron core part forms a part of an ideal closed circuit of a permanent magnet magnetic field and maintains a stable reset state. The electromagnet is excited in a short time or pulsed DC,
Since the permanent magnet is repelled in a small air gap, the driving power is small, and a locking selection control device with few failures is provided.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a rear side of a front plate of a select housing in an embodiment of the present invention.

FIG. 2 is an enlarged view of two vertical needle sections of the select housing of FIG. 1, in which the upper part of the vertical needle is cut away on the left side (A) and the entire front of the vertical needle is shown on the right side (B). FIG.

FIG. 3 is a schematic side sectional view showing a state where the select housings of FIG. 1 are arranged in a superimposed manner.

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

FIG. 5 is a schematic view showing a correspondence between a superimposed arrangement and a warp arrangement of the select housing of the present invention.

[Explanation of symbols]

 DESCRIPTION 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 Support shaft 8 Hook lever 9 Bracket 10 Permanent magnet 11 Long hole 11a Long Locking edge of hole 12 Electromagnet 13 Yoke 14 Magnetic core 15 Solenoid coil

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D03C 3/20

Claims (3)

(57) [Claims] 1. a) a base plate for guiding the lower end of a plurality of vertical needles, the lower end of which is connected to a plurality of threading threads, and for regulating the lower end of the vertical needle stroke; A select housing for arranging a plurality of vertical needle guide passages respectively guiding the upper part on the front side, and selectively engaging with the vertical needles and driving the vertical needles relatively up and down with respect to the base plate. On the back side corresponding to the needle guide passage, from a state of being upright corresponding to the back surface of the vertical needle passing through the passage, within a small angle range slightly inclined forward, so that it can swing in the direction of coming and going to the back surface of the vertical needle. An installed hook lever, and a permanent magnet protruding from the vicinity of the free end of the hook lever to the rear side such that both pole surfaces thereof are substantially upward and downward throughout the swing angle range of the hook lever. And those located in An electromagnet attached to a position opposite to the vertical needle passage corresponding to the permanent magnet, wherein when the hook is deenergized, the hook lever is free from the vertical needle and a magnetic attraction with the permanent magnet. Respectively, including a core having a pair of magnetic poles that are opposed to both pole surfaces thereof to draw the lever to the rear end of the angular range and allow the permanent magnets to play together to form the shortest magnetic circuit. C) the vertical needle is provided at the lowermost position of the select housing with respect to the base plate, and a long hole is provided to allow the hook lever to approach and receive the hook lever. The upper end of the received hook lever is locked with the relative elevation of the select housing to raise the vertical needle with the elevation of the lever. A locking rim is formed at the upper end of the long hole, and the vertical needle is locked to the main plate when the select housing relatively moves to the lowermost position, and the vertical needle is moved ahead of the select housing. The lower end position is regulated, and the hook lever locked in the long hole of the vertical needle is locked by the select housing being further lowered to the lowermost position after the lower end of the vertical needle stops. D) when the select housing starts a relative upstroke with respect to the base plate, the electromagnet is selectively DC-excited, and between the pair of magnetic poles, The hooked lever having the permanent magnet is moved toward the corresponding vertical needle by repulsively driving the loosened permanent magnet in the same polarity opposing relationship. The duration of the excitation is maintained until the upper end of the hook lever received in the elongated hole of the vertical needle is locked to the upper end of the elongated hole with the relative elevation of the select housing. Warp selection control unit of Jacquard machine. 2. A plurality of the select housings according to claim 1 having the same standard are prepared, each housing is aligned and overlapped, and a plurality of vertical needles cooperating with these housings are provided on a warp of the same jacquard machine. A warp selection control device for a Jacquard machine, which is applied to an arrangement. 3. The number of superposed select housings is set to a number applicable to all of the warp arrangements of the same jacquard machine, and these select housings are divided into a plurality of blocks, and the warp extends from one end block to the other end block. 3. The warp selection control device according to claim 2, wherein one end to the other end of the arrangement is assigned sequentially.