JPH0322293Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention applies the traction forces of a traction device and a return spring to a swinging lever that is pivotally mounted to the machine frame and connects the heald frame via an attachment. The present invention relates to a passive type shedding device configured to move the heald frame up and down.

<Prior Art> Conventionally, a passive shedding device 1 has a configuration in which a return spring 3 is disposed below a heald frame 2, as shown in FIG. The reference numeral 5 in the figure is a traction member such as a wire rope, and the numeral 7 is a traction device such as a dobby machine.

However, if the return spring 3 is disposed below the heald frame 2, the worker must place the return spring 3 under the heald frame 2 in order to adjust the weave pattern or texture. I had to drag myself through it. Therefore, the work was time-consuming.

Therefore, as shown in FIG. 9, an opening device 10 is known in which a return spring 3 is disposed on the side of the machine frame (see Japanese Patent Publication No. 60-30767). Others, Tokko Akira
Please refer to Publication No. 48-23507, etc.

In this shedding device 10, a swinging lever 13 is pivotally mounted on the side of a machine frame 11, a heald frame 2 is connected to this swinging lever 13 via an attachment 15, and a traction member is connected to this swinging lever 13. 5 and a return spring 3 are connected.

In the shedding device 10 having such a configuration, when the traction device 7 pulls the traction member 5, the swing lever 13 swings so as to lower the heald frame 2. On the other hand, when the traction device 7 is not pulling, the return spring 3 swings the swing lever 13 so that the heald frame 2 rises.

<Means for solving the problem> However, in the opening device 10 having the above configuration,
Since each swing lever 13 is provided with a return spring 3, the number of parts increases. Therefore, the work of attaching and detaching the return spring 3 for adjusting the weave pattern or texture becomes complicated.

In addition, the traction force of the return spring 3 is often achieved by replacing the swing lever 13 itself (the distance from the pivot 17 to the part 18 that stops the return spring 3,
and/or by changing the intersection angle between the portion 19 that holds the traction member 5 and the portion 18 that holds the return spring 3. ). Also in this case, each swing lever 1
Since three members (return spring 3, traction member 7, and attachment 15) are connected to 3, it takes time and effort to replace them.

<Means for solving the problem> This invention is a passive shedding device made with the aim of solving the above problem, and is pivoted to the machine frame and connected to a swinging lever connected to the heald frame via an attachment. , a passive shedding device configured to move the heald frame up and down by applying the traction forces of a traction device and a return spring, respectively, wherein the swing lever includes an attachment and a connecting arm facing outward from the machine frame. The attachment and the connecting arm are pivotally connected to the machine frame, an auxiliary lever is pivotally connected to the machine frame, and a connecting member is installed between the auxiliary lever and the connecting arm, and is connected to the traction device. A traction member, a connecting arm, a connecting member, an auxiliary lever, and a return spring are arranged in this order.

<Example> Hereinafter, this invention will be explained in more detail based on an example.

Note that the same members as those described in the conventional example are given the same reference numerals, and their explanations will be partially omitted.

As shown in FIG. 1, the opening device 20 of the embodiment includes a traction device 7, a traction member 5, two swing levers 21,
22, a connecting member 31, an auxiliary lever 35, and a return spring 3 are sequentially installed on the upper part of the machine frame 11.

A pivot 2 provided perpendicularly to the plane of the paper from the machine frame 11
3, the left ends of the swing levers 21 and 22 are pivotally mounted. Then, from this left end, connect arm 2 upwards.
5 are integrally protruded. Swing lever 21,
An attachment 27 is connected to the right end of 22.

Note that the swing lever is not limited to the illustrated example as long as it is pivotally attached to the machine frame 11 and the connecting arm 25 and attachment 27 are disposed so as to sandwich the pivot 23 therebetween. For example, the second
It is also possible to use the swing lever 29 having the configuration shown in the figure.

A traction member 5 (made of wire rope) is connected to the upper end of a connecting arm 25 that projects from the swing lever 21 on the left side of the figure. On the other hand, a connecting member 31 (made of wire rope) is connected to the upper end of a connecting arm 25 protruding from the swing lever 22 on the right side of the figure. Both connecting arms 25, 25 are connected by a wire rope 33.

In addition, each wire rope member 5, 31, 33
As shown in Fig. 3, the rigid bodies 5a, 31a, 33a
(a bar-shaped or rod-shaped member) (the passive opening device 20a). Of course, only some of these may be made rigid.

The auxiliary lever 35 is a substantially V-shaped member, and is pivoted at a bent portion from the machine frame 11 to a pivot shaft 37 provided in a direction perpendicular to the plane of the drawing. A connecting member 31 is connected to the tip of the V-shaped portion 35a on the left side in the figure. A return spring is connected to the tip of the V-shaped portion 35b on the right side in the figure. Code 3 in the diagram
9 is a bracket for the return spring 3.

The auxiliary lever has the following variants.

The auxiliary lever 41 in FIG. 4 is the same as the auxiliary lever 35 in FIG. 1 by omitting the portion 35a on the left side of the figure, providing a pulley 43, and directly connecting the connecting member 31 to the portion to which the return spring 3 is connected. It is the composition.
In this case, if the auxiliary lever 41 is made parallel to the connecting arm 25 as shown in FIG. 5, the pulley 43 can be omitted.

Even if the auxiliary lever 45 is shaped like a fan as shown in FIG. 6, the same effect as the auxiliary lever 35 in FIG. 1 can be obtained.

In the auxiliary lever of the type shown in FIGS. 1 and 6, the traction force of the return spring 3 can be reduced by changing the intersection angle α between the part that stops the connecting member 31 and the part that stops the return spring 3, that is, by replacing the auxiliary lever itself. Can be adjusted. In these types of auxiliary levers, since only two members (the connecting member 31 and the return spring 3) are connected, replacement work is easy.

Although an example using two swing levers 21 and 22 has been shown above, the number of swing levers is not particularly limited. FIG. 7 shows an example of a passive opening device 50 in which a third swinging lever 47 is provided. A wire rope 33 connects each connecting arm 25 of the swing levers 21, 22, 47.

Hereinafter, the operation of the passive opening device 20 of the embodiment will be explained based on FIG. 1.

When the traction device 7 pulls the traction member 5, the connecting arm 25 and the swing arm 21 swing counterclockwise about the pivot 23. Connecting arm 25
, the connecting arm 25 and the swing arm 2 on the right side of the figure are connected via the wire rope 33.
2 also swings counterclockwise around the pivot 23. These rocking movements are made against the return spring 3. Then, the swing arms 21 and 22 swing counterclockwise around the pivot 23, so that the heald frame 2 is pulled up.

On the other hand, when the traction device 7 is not towed, the return spring 3 is activated via the auxiliary lever 35 and the connecting member 31.
The connecting arm 25 and the swinging arm 22 are swung clockwise. This oscillation is caused by wire rope 3
3, the signal is also transmitted to the connecting arm 25 and the swing arm 21 on the right side in the figure. When the swinging arms 21 and 22 are thus swung clockwise about the pivot 23, the heald frame 2 is lowered.

<Operations and effects of the invention> As explained above, this invention applies the traction forces of the traction device 7 and the return spring to the swinging lever that is pivotally mounted to the machine frame and connects the heald frame via an attachment. This is a passive type shedding device configured to move the heald frame up and down. a traction member which is pivotally connected to the machine frame, an auxiliary lever is pivotally connected to the machine frame, a connecting member is installed between the auxiliary lever and the connecting arm, and is connected to the traction device;
This is a passive opening device that includes a connecting arm, a connecting member, an auxiliary lever, and a return spring.

In this passive shedding device, when the traction device pulls the traction member, the swinging arm, which has a pivot between the connecting arm (to which the traction member is connected) and the attachment to the heald frame, lifts the heald frame. It oscillates like this.

On the other hand, when there is no traction by the traction device, the return spring pulls the connecting arm in the opposite direction to the traction member, so the swing arm swings to lower the heald frame.

In the passive opening device configured in this manner, only one return spring is required, and the number of parts can be reduced. Therefore, the work of attaching and detaching the return spring 3 for adjusting the weave pattern or texture becomes easy.

[Brief explanation of drawings]

Figure 1 shows a passive opening device 2 of an embodiment of this invention.
0 is a front view showing the swing lever 2 of the modified example.
9, FIG. 3 is a front view showing a modified passive opening device 20a, FIGS. 4, 5, and 6 are front views showing auxiliary levers 41 and 45 of a modified example, and FIG. FIGS. 8 and 9 are front views showing a passive opening device 50 including a swing lever, and FIGS. 8 and 9 are front views showing conventional passive opening devices 1 and 10. FIG. 1, 10, 20, 20a, 50... Passive shedding device, 2... Heald frame, 3... Return spring, 5... Traction member, 7... Traction device, 11... Machine frame, 13,
21, 22, 29, 47...swing lever, 23...
... Pivot, 25 ... Connection arm, 15, 27 ... Attachment, 35, 41, 45 ... Auxiliary lever.

Claims (1)

[Scope of Claim for Utility Model Registration] A negative configuration in which the traction forces of a traction device and a return spring are respectively applied to a swinging lever that is pivotally attached to the machine frame and connects the heald frame via an attachment, thereby raising and lowering the heald frame. type opening device, wherein the swing lever includes the attachment and a connecting arm facing outward of the machine frame,
The attachment is pivotally connected to the machine frame between the attachment and the connection arm, an auxiliary lever is pivotally connected to the machine frame, and a connection member is installed between the auxiliary lever and the connection arm; A passive opening device characterized in that a traction member connected to a traction device, the connection arm, the connection member, the auxiliary lever, and the return spring are arranged in sequence.