JPH0336945B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an improvement of a hook support corresponding to the vertical needle of a needleless jacquard machine for forming a shed in a loom or the like.

<Prior art> As conventional shed forming devices, bidot machines and jia card machines are well known, but there is also an otsuhenbatsu haji card machine that selectively moves the warp up and down using pattern paper to form sheds. generally known. Recently, as is known from Tokuko Shou 60-36493, which does not have a cylinder or patterned paper, the horizontal needle is selectively operated via an electric device that performs the same control as the patterned paper, and is linked to the vertical needle. Some have a structure in which the warp threads are raised and lowered to form a shed.

More recently, Japanese Patent Application Laid-Open No. 59-26543 has provided a structure in which a vertical needle is selectively and directly movable via an electric device, without a known horizontal needle.

<Problems to be Solved by the Invention> Many of the structures of models without horizontal needles have a structure in which a rod, which corresponds to the vertical needle of a conventional jacquard machine, is hooked to the holding element, and the structure must be made sturdy because the holding element operates frequently. Therefore, the magnetic force of the solenoid must be made stronger. Along with this, many problems occur, such as generation of residual magnetism and heat generation of the solenoid. Further, since the restoring force of the holding element is used to indirectly restore the rod, many troubles occur.

<Means for solving the problems> In order to solve these problems, the present invention utilizes the inclined surfaces 10', 11' of the double-acting knives 10, 11 to directly control the double-acting movable hooks 7, 8. It is possible to provide a device that performs a vertical return operation, has a longer life than conventional devices, and has a structure with fewer troubles, and the present invention also embeds the permanent magnet 16 directly in the tip portion without using a holding element. The double-acting movable hooks 7 and 8 also serve as holding elements, and by weakly exciting the solenoid 12 installed at the top of the frame 43, the double-acting movable hook is effectively attached to the hook supports 13 integrally provided at both ends of the solenoid 12. 7
Similarly, the movable hook 8 can be selectively engaged directly with the hook support 14.

That is, the present invention provides hook supports at both ends of a selectively energized solenoid fixed to the upper end of the Jacquard machine frame, and a plurality of double-acting knives that alternately move up and down toward the hook supports. It is placed vertically in contact with multiple double-acting knives that face the hook support and rise alternately to the top position, and when the upper end hook of the double-acting movable hook reaches the top dead center, it is embedded in the tip of the double-acting movable hook. Due to the attraction or repulsion force generated between the permanent magnet and the hook support excited by a selectively energized solenoid, the upper end hook of the raised double-acting movable hook and the hook support by selectively and alternately engaging the double-acting movable hooks, and sliding the lower hooks of the engaged double-acting movable hooks onto the upper inclined surface of the knife which is raised by the opening operation of the jacquard machine and alternately picks up the knife. Mechanically, the double-acting movable hook can be positively returned to its original vertical position.

Therefore, the most effective feature of the device of the present invention is that the solenoid 12 is energized for a long period of time from when the double-acting knife 10 or the double-acting knife 11 crosses and rises until they descend and cross again. be able to.

Furthermore, the hook supports 13 and 14 can be energized and wait for the double-acting movable hook 7 or 8 to rise. Also hook support 13 or 1
A double-acting knife 10 in which the lower part 7a or 8a of the double-acting movable hook 7 or 8 held in the uppermost position at 4 rises.
The hook supports 13 and 14 are excited before contacting the upper inclined surface 10' or 11' of the hook support 13 or 11, and as a result, it is possible to maintain the excitation effect for a long time, and the double-acting The movable hooks 7 or 8 could ensure their engagement with each other.

Unlike the conventional holding element type jacquard machine, an accurate shed can be formed without any mis-engagement of the movable hooks 7 and 8, and a device that is structurally simple and has a long life can be provided.

<Example> Hereinafter, the present invention will be described with reference to the drawings based on a known Otsuhenbatsuhaji card mechanism. 1 and 12, a spring 1 is installed at the bottom of the loom (not shown).
The lower end of the heald is fixed, and the upper end is connected to the lower end of the heald 2. A thin cord 3 corresponding to threading is connected to the upper end of the heald 2, and the other end is connected to the frame 4 through a lower grooved pulley 4.
Fix it at the bottom of 3.

A grooved pulley 5 is provided adjacent to the upper part of the grooved pulley 4, and the lower grooved pulley 4 and the upper grooved pulley 5 are connected by a bracket 6. Therefore, the lower grooved pulley 4 and the upper grooved pulley 5 can simultaneously rotate and move up and down.

Hereinafter, the lower grooved pulley 4 will be abbreviated as a pulley 4, and the upper grooved pulley 5 will be abbreviated as a pulley 5.

In Fig. 12, a horizontal needle 31, a mouth plate 32, and a spring box 3 necessary for a conventional jacquard machine are shown.
3, spring 34, cylinder 41, pattern paper 4
2. The double-acting vertical needles 37, 38, the lower rods 39, 40, etc. that hold the double-acting vertical needles at the lower part are not necessary when carrying out the present invention.

When the horizontal needle 31 is pushed in the direction of the arrow by the pattern paper 42, the tip 37b or 3 of the double-acting vertical needle 37 or 38
8b is tilted to the right and does not engage knife 10 or 11,
If the horizontal needle 31 is not pressed, the vertical needle 37 or 38
It is known that the knife 10 or 11 engages and rises.

In the present invention, double-acting movable hooks 7 and 8 are provided in place of the conventional double-acting vertical needles 37 and 38, and the double-acting movable hooks 7 and 8 are connected to each other using a narrow cable 9.
Pass it through the pulley 5 as shown in the figure. Hereinafter, they will be abbreviated as double acting movable hooks 7 and 8 movable hooks 7 and 8. In FIG. 1, when the double-acting knife 10 or 11, which moves up and down alternately, comes into contact with the movable hook 7 or 8, the lower part 7a or 8a of the movable hook 7 or 8 moves upwardly to the upper inclined surface 10' or 11' of the knife 10 or 11. The knife 10 or 11 is adapted to hold the movable hook 7 or 8 in a vertical position.

Hereinafter, the double acting knives 10 and 11 will be abbreviated as knives 10 and 11. Also, from now on, multiple 1 double-acting Jia Guard machines
The operation of the sets will be explained in a simplified manner by considering them as one set as described above.

In FIG. 1, knives 10 and 11 alternately move up and down as shown;
The upper part 7b of the movable hook 7 or 8 raised by
or if the knife 8b is not held by the hook supports 13 or 14 provided at the opposite ends of the solenoid 12 provided at the uppermost position of the frame 43 (i.e., the knife 10 or 11 does not hold the movable hook 7 or 8). If the handle is held and moved up and down alternately, the pulley 4 does not rotate and only the pulley 5 rotates.

Therefore, since the fine cords 3 do not move up and down, the warp threads 15 remain stationary at the bottom dead center position.

Hook supports 13 and 14 are solenoid 12
It is installed using the U-shaped tip and has a shape that makes it easy to attach the hook. Details of the hook supports 13 and 14, the movable hooks 7 and 8, and the solenoid 12 are shown in FIGS. 7A and 7B.

The hook support 13 or 14 is attached to the upper end 7 of the movable hook 7 or 8 when the movable hook 7 or 8 is held in a vertical position by the knife 10 or 11.
b or 8b is installed in a position that does not engage.

In FIG. 7A, by energizing the solenoid 12 fixed at the uppermost position of the frame 43 by an external electrical signal (not shown), the upper end 7b of the movable hook 7 is attached to the hook support 13 as shown by the arrow. The tip of the movable hook 7 tilts to the right.

As is clear from FIG. 7A, the normally movable hook 7
When the upper end 7b is repelled by the hook support 13 and is not attracted, the lower part 7a of the movable hook slides all the way down to the inclined surface 10' of the knife 10 and is securely held in the vertical position, so that the upper end of the movable hook 7 The portion 7b stands upright, and even if the movable hook 7 is lowered with the lowering of the knife 10, the upper end 7b of the movable hook 7 does not come into contact with the hook support 13 and the movable hook 7 is not held. .

Note that normally used members such as the bottom plate, neck thread, crown, hanging threads connecting the jacquard machine and heald, and batten are not shown in order to simplify the drawing.

Furthermore, the spring 1 can be replaced with another member, such as by using an arrow to perform a similar operation.

Next, the positional relationship of each member when moving the warp threads 15 up and down is shown in FIGS. 1 to 6.

If the warp yarns 15 are to be kept lowered, that is, if they are to be kept stationary at the bottom dead center, the steps in FIGS. 1 and 2 are repeated.

When raising the warp threads 15, see Figures 2 and 3.
4, or in the order shown in FIG. 3 and FIG. 4. In this case, as shown in Figure 3, solenoid 1
2, the upper end 7b of the movable hook 7 is engaged with and held by the hook support 13. Similarly, in FIG. 4, the upper end 8 of the movable hook 8
b is held and the warp threads 15 reach the top dead center.

If the warp threads are to remain stationary at the top dead center, repeat the steps in Figures 4 and 5.

When lowering the warp threads 15, see Fig. 5 and Fig. 6.
The steps are performed in the order shown in Figure 1. In this case, Figure 6 and Figure 1
As shown in the figure, when the knife 11 or 10 reaches its highest position, the upper end 8b of the movable hook 8 or 7
or 7b is removed from the end 14 or 13 of the solenoid 12, and the lower part 8a or 7a of the movable hook 8 or 7 is attached to the inclined surface 11' or 10' of the knife 11 or 10.
By sliding down the upper end 8b or 7b of the movable hook 8 or 7, the upper end 8b or 7b of the hook support 14 or 1
3, the movable hooks 8 or 7 return to the vertical position.

As is clear from the above description, the skeleton of the device forming the shed is illustrated. Although not shown in the drawings, it goes without saying that members such as brackets, guides, and rails are required for each member during manufacture.

Next, details of the swing mechanism (adsorption, repulsion) of the movable hooks 7 and 8 will be explained with reference to FIGS. 7A and 7B.

FIG. 7A shows a detailed side view of the invention, and FIG. 7B shows a detailed plan view.

Permanent magnets 16 are attached to the upper ends of the movable hooks 7 and 8.
is embedded, and by reversing the magnetic polarity of the solenoid 12, the hook supports 13 and 14 are selectively attracted or repelled.
The upper end 7b or 8b of the movable hook 7 or 8 is engaged with and held by the hook support 13 or 14,
The movable hook 7 or 8 is disengaged from the held movable hook 7 or 8.

When removing the upper end 8b of the movable hook 8, when the knife 11 picks up the movable knife 8 in FIG. The knife 11 slides down along the upper slope 11' in the direction of the arrow,
In this case, when the knife 11 and the movable hook 8 come into close contact with each other, even if the suction operation of the solenoid 12 is released before these operations, the upper end 8b of the movable hook 8 is engaged with the hook support 14, so the movable hook 8 When the knife 11 is bent at the upper part and the upper end 8b is removed from the hook support 14, the movable hook 8 mechanically returns to the vertical position and the upper end 8b of the movable hook 8 moves to the right.

Furthermore, the excitation switching timing of the solenoid 12 is such that when the upper end 8b of the movable hook 8, which is raised by the knife 11, approaches the hook support 14, the excitation switching has already been completed. In this case, even if the tip of the upper end portion 8b vibrates, the movable hook 8 will descend again due to the repulsive action of the magnet generated between the permanent magnet 16 embedded in the upper end portion of the movable hook 8 and the hook support 14. Sometimes they do not engage each other.

In addition, the lower part 7a or 8a of the movable hook 7 or 8
The positional relationship between the movable hook 7 or 8 and the knife 10 or 11 is such that even when the tip 7b or 8b of the movable hook 7 or 8 performs a swinging (adsorption, repulsion) operation, the tip of the movable hook 7b or 8b always remains on the inclined surface of the knife 10 or 11. It is designed so that it is always caught on 10' or 11'.

FIG. 8 shows the state in which the knife 10 is lowered and the movable hook 7 is held on the hook support 13.

By selectively energizing the solenoid 12,
There is a mechanism that excites the hook supports 13 and 14 to the north or south pole, acts with the south or north pole of the magnet 16 of the movable hook 7 or 8, and swings (attracts or repels) the movable hook 7 or 8. As described above, to explain in more detail, the S pole face of the permanent magnet 16 embedded in the movable hook 7,
If the opposing (facing) hook supports 13 that are selectively excited by the solenoid 12 are N poles, they will attract each other, and if they are S poles, they will repel each other.
(Left view of FIG. 7A) Needless to say, the hook supports 13 and 14 can be selectively excited to opposite polarities by the solenoid 12.

Furthermore, once the movable hooks 7 or 8 are held, even if the excitation of the solenoid 12 is reversed and the tips 7b or 8b repel each other from the hook supports 13 or 14, the movable hooks 7 and 8 will always be pulled downward. Because of the tension, the tip 7b or 8b of the movable hook 7 or 8 remains engaged with the hook support 13 or 14 and remains locked unless pushed upwardly to the top by the knife 10 or 11.

Therefore, the excitation reversal timing between the start and end of excitation of the solenoid 12 is set to occur near where the knives 10 and 11 intersect with each other.
The solenoid 12 can be reversely energized and wait until the movable hook 7 or 8 has risen to the top dead center, and the solenoid 12 can be energized with sufficient margin, which is different from the conventional Jacquard machine. A huge benefit was obtained.

In addition, solenoid 12 and hook support 1
Preferably, the members other than 3 and 14 are made of non-magnetic material, and the movable hooks 7 and 8 are made of elastic material.

It goes without saying that the same effect can be obtained by energizing the movable hooks 7 and 8 as solenoid structures and embedding N-pole and S-pole permanent magnets in the hook supports 13 and 14, respectively.

In the above explanation, one unit has been explained, but as is clear from the structure of the loom, it is necessary to arrange a plurality of units adjacent to each other.

<Effects of the Invention> The device of the present invention does not use a normal weft needle (not shown) and directly transmits an electrical signal to the movable hooks (7 and 8 in the figure) that control the warp thread shedding. There are many advantages.

(1) The shed of the loom can be formed at high speed.

(2) Since multiple hooks can be controlled by one solenoid with double acting, sufficient solenoid space can be taken up, and since the solenoid only requires weak excitation operation (current), there is no risk of magnetic interference. do not have.

(3) Since the solenoid is a fixed type, there is no problem of disconnection and it is semi-permanent.

(4) The structure is simple because the hook is directly held by the solenoid, rather than a complicated structure using a holding element.

(5) Since the vertical return operation can be performed mechanically while the movable hook is held on the hook support, a sufficient margin can be provided for the solenoid excitation time.

The above explanation has been given for one embodiment, but as shown in FIGS. 9, 10, and 11, only the single-acting movable hook 22 and the single-acting knife 23 are used to open the warp threads 15 at the bottom end. It goes without saying that it is possible to manufacture various devices by doing this.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention.
FIG. 2 shows the case where the warp threads are at the bottom dead center. Figure 3 shows the case where the warp threads are raised;
FIGS. 4 and 5 show the case where the warp threads reach the top dead center. Fig. 6 shows the case where the magnetism of the solenoid is changed to lower the warp threads, Fig. 7A is a detailed side view of the main parts of the present invention such as the solenoid, and Fig. 7
FIG. B shows a detailed top view, and FIG. 8 partially shows the knife when it is lowered. 9, 10, and 11 show another embodiment in which a single-acting movable hook is used. FIG. 12 shows an explanatory diagram of the basic configuration of a conventional Otsuhenbatsuhaji card. 1... Spring, 2... Heald, 3... Thread,
4... lower grooved pulley, 5... upper grooved pulley, 7,
8... Double acting movable hook, 10, 11... Double acting knife, 12... Solenoid, 13, 14... Hook support, 15... Warp thread, 16... Permanent magnet,
22...Single-action movable hook, 23...Single-action knife,
31... Horizontal needle, 32... Mouth plate, 33... Spring box, 34... Spring, 37, 38...
...Double acting vertical needle, 39,40...Lower rod, 41...
...Cylinder, 42...Pattern, 43...Frame.

Claims (1)

[Claims] 1. A hook support is provided at both ends of a selectively energized solenoid fixed to the upper end of the Jacquard machine frame, and a plurality of double-acting knives that alternately move up and down toward the hook support. , a plurality of double-acting movable hooks facing the hook support and rising alternately to the highest position are arranged vertically in contact with the double-acting knife, and when the upper end hook part of the double-acting movable hook reaches the top dead center, the double-acting The double-acting movable hook rises due to the attractive force or repulsive force generated between the permanent magnet embedded in the tip of the movable hook and the hook support that is energized by a selectively energized solenoid facing the permanent magnet. The upper end of the knife selectively and alternately engages the upper end hook with the hook support, and the lower hook of the engaged double-acting movable hook is raised and alternately picked up by the opening operation of the jacquard machine. A double-acting jacquard shed forming device, characterized in that the double-acting movable hook is mechanically returned to its original vertical position positively by sliding it down an inclined surface. 2 A hook support is provided at both ends of a selectively energized solenoid fixed to the upper end of the Jacquard machine frame, and a single-acting knife that moves up and down toward this hook support is placed in the uppermost position facing the hook support. When the rising single-acting movable hook is placed vertically in contact with the single-acting knife, and when the upper end of the single-acting movable hook reaches the top dead center, the permanent magnet embedded in the tip of the single-acting movable hook and this The upper end hook portion of the single-acting movable hook and the hook support are selectively engaged by the attraction or repulsion force generated between the hook support and the hook support excited by a selectively energizable solenoid facing the , the lower hook of the engaged single-acting movable hook is slid down onto the upper inclined surface of the knife which is raised by the opening action of the jacquard machine to pick it up, thereby mechanically returning the single-acting movable hook to its original vertical position. A single-acting Jacquard lower opening shed forming device characterized by a positive return operation.