JPH0554577U - Electronic dobby - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to visually observe the state of attraction to the electromagnetic solenoid. In the electronic dobby having action levers 12a, 12b which are rotated to the action / non-action position by the auxiliary cam 15 and electromagnetic solenoids 23a, 23b which attract and hold the action levers 12a, 12b in the action position, The action levers 12a and 12b are provided with auxiliary arms 19a and 19b extending rearward from the action levers 12a and 12b, and the electromagnetic solenoids 23a and 23b are provided to the auxiliary arms 1a and 1b.
It is characterized by being arranged so as to face 9a and 19b.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an electronic dobby that determines whether to lift a heald frame of a loom.

[0002]

[Prior Art]

 In a loom having a heald frame, the heald frame is raised and lowered by a dobby.

The applicant previously proposed an electronic type dobby (Japanese Patent Application No. 63-78152, etc.) in which an electromagnetic solenoid is used instead of the conventional card type dobby to determine the elevation of the heald frame.

This dobby will be described with reference to FIGS. 5 and 6.

First, inside the dobby body 32, a jack lever 34 for connecting the end 33 a of the wire 33 and for pulling in the wire 33 is provided rotatably around a fixed shaft 35. When the jack lever 34 is not rotated at the position shown in the figure, the above-mentioned held frame is held in the lowered (or raised) position, and when the jack lever 34 is rotated, the heald frame is held via the wire 33. The frame is raised (or lowered).

A V-shaped lever 37 is connected to the jack lever 34 via a lever ratio adjusting arm 36, and the V-shaped lever 37 is rotatably provided around a fixed shaft 38. The V-shaped lever 37 is connected to the vaux plate 2 having movable hooks 3a and 3b at both ends by a pin 39.

On the other hand, a reciprocating lever 42 that engages with the cam shaft 40a of the cam 40 and reciprocates in the direction of the arrow 41 shown by the rotation of the cam 40 is provided, and a pin 43 is driven at the tip of the reciprocating lever 42. The lever 44 is connected. Although not shown, the drive lever 44 is rotatably fixed to the dobby body 32 at the same position as the position of the pin 39 of the substantially dog-legged lever 37, and the pressing pieces 44a and 44b at both ends thereof are attached to the boke plate 2. The movable hooks 3a and 3b are provided so as to come into contact with the back surface on the opposite side.

On the dobby body 32, a pair of upper and lower holding hooks 46a, 46b having hook portions 45a, 45b respectively engaged with the movable hooks 3a, 3b of the balk plate 2 are rotatable by fixed shafts 47a, 47b, respectively. (The lower holding hook 46b is not shown).

A spring 48 is provided between the hooks 45a and 45b, and the hooks 45a and 45b are constantly urged to rotate to a non-acting position where they come into contact with the stoppers 49a and 49b. Action levers 51a and 51b are engaged with the holding hooks 46a and 46b via movable portions 50a and 50b that rotate the hook portions 45a and 45b between an operating position and a non-operating position.

The action levers 51a and 51b include engagement lever portions 52a and 52b engaged with the movable portions 50a and 50b, driven lever portions 54a and 54b operated by the auxiliary cam 53, and action levers 51a and 51b. It is composed of attraction lever portions 55a and 55b made of a magnetic material for rotating to the action / non-action position. Electromagnetic solenoids 56a and 56b are arranged facing the suction lever portions 55a and 55b, respectively.

Next, the case of raising and lowering the heald frame in the dobby of this prior application will be described.

First, as the auxiliary cam 53 rotates, the suction lever portions 55a and 55b alternately move toward and away from the corresponding electromagnetic solenoids 56a and 56b, and the holding hooks 46a and 46b move toward the movable hooks 3a and 3b. It rotates to the non-acting position where it is disengaged from the action position where it engages with. At this time, if the electromagnetic solenoids 56a, 56b are energized, the hook portions 45a, 45b of the holding hooks 46a, 46b are held in the operating position, and if not energized, they are in the non-operating position.

Now, the rotation of the jack lever 34 when the upper holding hook 46a shown in the drawing is in the operating position will be described.

When the reciprocating lever 42 is reciprocated in the direction of the arrow 41 shown by the cam 53, the drive lever 44 is rotated. At this time, when the drive lever 44 is rotated counterclockwise from the state shown in the drawing, the hook portion 45a of the upper holding hook 46a and the movable hook 3a of the balk plate 2 are engaged, so that the boke plate 2 of the balk plate 2 is engaged. The pin 2a connecting the movable hook 3a is fixed, so that the turning force of the drive lever 44 is transmitted from the pressing piece 44b to the balk plate 2, and the balk plate 2 is rotated counterclockwise about the pin 2a. Accordingly, the V-shaped lever 37 connected by the pin 39 is rotated clockwise, and the jack lever 34 is rotated clockwise via the lever ratio adjusting arm 36. It will be lowered.

Next, when the reciprocating lever 42 moves in the opposite direction to the above, the lower movable hook 3b of the balk plate 2 has the holding hook 46b (not shown) therebelow, and when the holding position 46b is in the operating position, Similarly, when the jack lever 34 is rotated and is in the non-acting position, the jack lever 34 is not rotated.

That is, when the electromagnetic solenoids 56a and 56b are energized, the holding hooks 46a and 46b are in the operating position, and when the jack lever 34 is not energized, it is in the non-operating position, and the jack lever 34 is not rotated. It will be.

[0017]

[Problems to be Solved by the Invention] By the way, in order to visually observe the adsorption portion of the electromagnetic solenoid that adsorbs and holds the adsorption lever portion, the lid of the upper portion of the dobby body should be removed to see the adsorption portion of the electromagnetic solenoid. Can be observed, but the attraction part of the electromagnetic solenoid below is a blind spot for observation and cannot be visually observed. For this reason, it is not possible to visually confirm whether or not the suction lever portion energized by the solenoid is performing the initial operation.

Therefore, the present invention has been made in consideration of such a situation, and an object thereof is to provide an electronic dobby capable of visually observing a state of attraction to an electromagnetic solenoid. is there.

[0019]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an electronic dobby having an action lever that is rotated by an auxiliary cam to a working / non-working position and an electromagnetic solenoid that holds the action lever by suction in the working position. The action lever is provided with an auxiliary arm extending rearward from this, and the electromagnetic solenoid is arranged so as to face the auxiliary arm.

[0020]

[Action]

 When the auxiliary arm provided on the action lever is attracted and held by the electromagnetic solenoid, the action lever is attracted and held at the working position. Therefore, since the auxiliary arm is provided behind the action lever and the electromagnetic solenoid is arranged so as to face the auxiliary arm, it is possible to visually check whether the auxiliary arm is attracted to the electromagnetic solenoid from behind. It becomes possible to observe.

[0021]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the structure of the jack lever 34, the lever ratio adjusting arm 36, the doglegged lever 37, the swing lever 44, and the reciprocating lever 42 driven by the cam 40 swinging the swing lever 44 is shown in FIG. Although not shown, it is as described in FIGS. 5 and 6, and the same components as those in FIGS. 5 and 6 are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 1, reference numerals 1a and 1b denote holding hooks, and hook portions 4a and 4b that engage with the movable hooks 3a and 3b of the balk plate 2 (the lower movable hook 3b is not shown in the illustrated example), The hook portions 4a, 4b are composed of movable portions 5a, 5b for rotating the hook portions 4a, 4b into an operating position and a non-operating position, and these are rotatably provided on fixed shafts 6a, 6b, respectively. Springs 7a, 7b are provided between the movable parts 5a, 5b and the hook parts 4a, 4b, and the hook parts 4a, 4b always contact the stopper pieces 8a, 8b of the movable parts 5a, 5b to rotate integrally. It is designed to move. The movable portions 5a, 5b are provided with slide portions 10a, 10b, and the slide portions 10a, 10b are engaged lever portions 13a, 13b of the action levers 12a, 12b rotatably provided on the fixed shaft 11. Are slidably engaged with the grooves 14a and 14b.

The action levers 12 a and 12 b have driven lever portions 16 a and 16 b that face the engaging lever portions 13 a and 13 b and are rotated by the auxiliary cam 15. The action levers 12a and 12b have operating portions 17a and 17b, and the operating portions 17a and 17b are provided with rotary shafts 18a and 18b, respectively, and the rotary shafts 18a and 18b extend rearward therefrom. Auxiliary levers 19a and 19b are provided as auxiliary arms.

Between the operating portions 17a, 17b and the auxiliary levers 19a, 19b, springs 20a, 20b for urging the auxiliary levers 19a, 19b to the side opposite to the fixed shaft 11 side are provided, and The auxiliary levers 19a and 19b are provided with stoppers 21a and 21b which come into contact with the operating portions 17a and 17b, so that the auxiliary levers 19a and 19b are restricted from rotating to the side opposite to the fixed shaft 11 side. Further, engaging portions 22a, 22b are provided at the tip end portions of the auxiliary levers 19a, 19b, and these engaging portions 22a, 22b are engaged pieces when the electromagnetic solenoids 23a, 23b are energized at the operating position. It is adapted to engage with 24a, 24b. The electromagnetic solenoids 23a and 23b attract the auxiliary levers 19a and 19b by magnetic force to hold the action levers 12a and 12b in the working position, and are arranged between the upper and lower auxiliary levers 19a and 19b. There is. That is, the electromagnetic solenoids 23a and 23b are provided so as to face the auxiliary levers 19a and 19b, and the adsorbed state of the auxiliary levers 19a and 19b to the electromagnetic solenoids 23a and 23b can be visually checked from the rear of the auxiliary levers 19a and 19b. Is becoming A peep window 26 is provided on the rear dobby body 25.

Next, the operation of this embodiment will be described.

When the auxiliary cam 15 rotates, the driven lever portions 16a and 16b of the action levers 12a and 12b are alternately oscillated, and at the same time, the holding hooks 1a and 1b of the action plate 12a and 12b move to the poke plate 2 via the engaging lever portions 13a and 13b. The movable hooks 3a and 3b are alternately rotated into an operating position where they engage with the movable hooks 3a and 3b and a non-operating position where they engage with each other. Further, the auxiliary levers 19a and 19b as well as the action levers 12a and 12b move back and forth between the working and non-working positions. When the action levers 12a and 12b are rotated to the operating position, that is, the upper action lever 12a is rotated from the non-operating position in the solid line position to the operating position in the alternate long and short dash line position as shown in FIG. At this time, if the electromagnetic solenoid 23a is excited, the auxiliary lever 19a is attracted to and held by the electromagnetic solenoid 23a against the urging force of the spring 20a as shown by the chain double-dashed line. At this time, the engaging portion 22a of the auxiliary lever 19a and the engaging piece 24a are engaged with each other. The same applies to the lower action lever. As a result, the holding hooks 1a and 1b are held in the operating position, engage with the movable hooks 3a and 3b of the poke plate 2, and raise (or lower) the above-mentioned heald frame.

Since the electromagnetic solenoids 23a and 23b for holding the holding hooks 1a and 1b in the operating position are arranged between the upper and lower auxiliary levers 19a and 19b, there is an obstacle behind the auxiliary levers 19a and 19b. There is no. For this reason, it is possible to visually observe the attraction states of both the upper and lower auxiliary levers 19a and 19b to the electromagnetic solenoids 23a and 23b from the viewing window 26 provided in the dobby body 25. Therefore, it is possible to visually confirm whether or not the auxiliary levers 19a and 19b to which the solenoid has been energized are in the initial operation.

When the electromagnetic solenoids 23a, 23b attract and hold the auxiliary levers 19a, 19b by magnetic force, the engaging portions 22a, 22b of the auxiliary levers 19a, 19b and the engaging pieces 24a, 24b are engaged. Therefore, the attraction force is smaller than that of the conventional one that only attracts and holds the auxiliary levers 19a and 19b. Therefore, the capacity of the electromagnetic solenoids 23a, 23b can be made small, the electromagnetic solenoids 23a, 23b can be made compact, and the dobby can be made compact.

FIGS. 3 and 4 are views showing another example of the stopper that restricts the rotation of the auxiliary lever. The difference from the above embodiment is that the action levers 12a and 12b in the embodiment shown in FIG. And the auxiliary levers 19a, 19b are provided with projections 28a, 28b smaller than the diameters of the restriction holes 27a, 27b protruding from the restriction holes 27a, 27b. Even with this structure, the rotation of the auxiliary levers 19a and 19b can be restricted.

In the embodiment shown in FIG. 4, the stoppers 29a, 29b are arranged on the side opposite to the electromagnetic solenoids 23a, 23b of the auxiliary levers 19a, 19b, that is, on the side biased by the springs 20a, 20b. Therefore, the rotation of the auxiliary levers 19a and 19b to the side opposite to the fixed shaft 11 side is restricted by the stoppers 29a and 29b.

[0032]

[Effect of the device]

 In short, according to the present invention, the action lever is provided with the auxiliary arm extending rearward from the action lever, and the electromagnetic solenoid is arranged so as to face the auxiliary arm. It has an excellent effect that it can be visually observed.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing details of a part of FIG.

FIG. 3 is a view showing another embodiment of the present invention.

FIG. 4 is a view showing another embodiment of the present invention.

FIG. 5 is a schematic view showing an example of a prior application.

FIG. 6 is a diagram showing details of a part of FIG. 5;

[Explanation of symbols]

 12a, 12b Action lever 15 Auxiliary cam 19a, 19b Auxiliary lever (auxiliary arm) 23a, 23b Electromagnetic solenoid

Claims (1)

[Scope of utility model registration request] 1. An electronic dobby having an action lever which is rotated by an auxiliary cam to an action / non-action position and an electromagnetic solenoid which attracts and holds the action lever at the action position, wherein the action lever is provided behind the action lever. An electronic dobby, wherein an extended auxiliary arm is provided and the electromagnetic solenoid is arranged so as to face the auxiliary arm.