JPH0634380Y2 - Shearing motion detection device in loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an opening motion detecting device in a depolarizing opening device utilizing a spring action.

[Prior Art] In a depolarizing shedding device utilizing a spring action, the actual shedding amount is set by the extension of the rope caused by repeated additional fluctuations or bending guides at the guide roller part, and the inertia force increase due to the speedup of the loom. A difference with the opening amount easily occurs,
Such an abnormal opening leads to an increase in the occurrence of weft insertion errors.
Japanese Utility Model Laid-Open No. 60-117880 discloses a device for measuring and displaying the height position of the heddle frame, and Japanese Utility Model Laid-Open No. 61-45220 discloses a device for detecting an abnormality in the height position of the heddle frame. It is disclosed. In Japanese Utility Model Laid-Open No. 60-117880, a scale is provided on the side stay of the heddle frame, and the guide of the heddle frame is used as a mark.In Japanese Utility Model Laid-Open No. 61-45220, when the heddle frame reaches a predetermined height position, this height is increased. The arrival of the position is detected as an abnormal opening movement.

[Problems to be Solved by the Invention] However, the former device has a difficulty in visually confirming the scale during operation of a machine driven at high speed, and it is possible to grasp the actual height position of the heddle frame during operation of the loom. Therefore, the suitability of the actual opening movement cannot be determined. The latter device can only grasp the state of the opening movement when the opening movement approaches an abnormal state, and has no role in determining the optimum state of the opening movement.

An object of the present invention is to provide an apparatus capable of detecting the height position of the heddle frame during the opening movement and performing the optimum opening movement setting.

[Means for Solving the Problem] In the present invention, therefore, in a depolarizing opening device for transmitting a spring action by a rope, the heddle is directed to the side of the opening movement region of the heddle frame along the opening movement direction and toward the front of the machine base. A scale plate is provided obliquely in the direction of expanding with respect to the frame, and a mark for supporting the scale plate is provided at a portion that moves up and down integrally with the heddle frame, and the predetermined light is emitted by the stroboscope at a predetermined timing. The scale plate and the mark are arranged so as to face each other so that the positions of the scale and the mark at the timing can be visually checked.

[Operation] As the predetermined timing, for example, a timing when the heddle frame is at the top and the bottom is selected, and the stroboscope is caused to emit light at this timing, so that the operator understands the contrast between the mark and the scale at this timing. This makes it possible to judge the suitability of the height position and the opening amount of the heddle frame during the opening movement, and not only the optimum setting of the opening movement can be made, but also the visual observation and confirmation of the scale and the mark are extremely easy.

[Embodiment] An embodiment embodying the present invention will be described below with reference to FIGS.

Jack levers 5 and 6 which are rotatably supported by bifurcated brackets 3 and 4 which are erected on both side frames 1 and 2 of the loom are rotationally biased by tension springs 7 and 8, respectively. On the lower ends of the suspension ropes 9 and 10 connected to the levers 5 and 6, connecting bodies 12 and 13 for attaching and supporting the heald frame 11 are fixed. A reciprocating drive mechanism including a cam 14 and a cam lever 15 that rotate in synchronization with the rotation of the machine is installed on one side frame 1 side, and pull-down ropes 16 and 17 connected to the cam lever 15 are connected to the connecting body 12. It is linked to 13. Therefore, the cam
The rotation of 14 is converted into the vertical movement of the connecting bodies 12, 13 via the pull-down ropes 16, 17, and the heddle frame 11 moves up and down.

At the upper end of both side stays 11a and 11b of the heddle frame 11, the mounting portion 1
1c and 11d are projected, and the mounting parts 11C and 11d are the connecting tools 1.
It is fastened and fixed to the coupling bodies 12 and 13 by 8, 19 and screws 20 and 21. Scale plates 22, 23 are provided on the side frames 1, 2 on the side of the vertical movement region of the connecting tools 18, 19 that move up and down integrally with the heddle frame 11.
Is fixed along the direction of opening movement, and
Marks 18a and 19a are provided on the scale so as to face the scale plates 22 and 23. As shown in FIG. 2, the scale plates 22 and 23 are symmetrically attached such that the distance between the scale plates 22 and 23 is oblique so that the front side of the loom, that is, the cloth fell side is wide and the opposite side is slightly narrowed.
The scales on 22, 23 are visible from the front of the loom through a relatively narrow gap between the side frames 1, 2 and the connecting tools 18, 19.

Marks 18a and 19a that move up and down at high speed are usually not visible,
The stroboscope 24 is made to emit light, and the mark 18a,
It is possible to express 19a in a state of instantaneous rest. Therefore, the heddle frame is used as the light emission timing of the stroboscope 24.
Select _two timings (machine rotation angle position θ ₁ , θ ₂ ) where 11 is the highest and the lowest, and each timing θ ₁ ,
The stroboscope 24 is caused to emit light at θ ₂ . Timing θ
Light emission at ₁ , θ ₂ marks as shown by the chain line in Fig. 1.
18a appears near the top and the bottom of the scale in an instantaneously stationary state, and indicates the scale on the scale plate 22. By reading the indicated numerical value, the height position and vertical movement amount of the right part of the heddle frame 11 at the timings θ ₁ and θ ₂ can be grasped. Similarly, the mark 19a of the connector 19 and the scale plate 23 can be compared by the light emission of the stroboscope 24, and the height position and the amount of vertical movement of the left part of the heddle frame 11 can be grasped. By grasping the left and right height positions of the heddle frame 11 and the amount of vertical movement, it is possible to determine whether or not the actual hedging movement of the heddle frame 11 is proper and prevent the occurrence of weft insertion errors due to abnormal opening movement. It is also possible to set the optimum opening movement.

The present invention is not of course limited to the above-mentioned embodiment, and for example, as shown in FIG.
A mark 26a may be provided on the hook connecting member 26 that is hooked on the upper end of 25a, or a mark 25b may be provided on the upper end of the side stay 25a as shown in FIG.

[Advantages of the Invention] As described in detail above, the present invention is configured to compare the positions of the predetermined mark and the scale at the predetermined timing by the light emission of the stroboscope at the predetermined timing during the operation of the machine base. It is possible to reliably grasp the error between the actual opening movement and the set opening movement. This not only prevents abnormal opening movement, but also allows optimum setting of the opening movement. It has an excellent effect that it is easy to visually check.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment embodying the present invention, FIG. 2 is a perspective view of a main part, and FIGS. 3 and 4 are front views of a main part showing another example. Heald frame 11, marks 18a, 19a, scale plates 22, 23, stroboscope 24.

Claims (1)

[Scope of utility model registration request] 1. A depolarizing opening device for transmitting a spring action by a rope, which is oblique to a side of an opening movement region of a heddle frame along an opening movement direction and toward a front of a machine base in a direction of expanding with respect to the heddle frame. A scale plate is provided so as to intersect with each other, and a mark for indicating the scale plate is provided at a portion that vertically moves integrally with the heddle frame.
A shedding motion detection device in a loom in which the scale plate and the mark are arranged so that the positions of the scale and the mark at the predetermined timing can be visually observed by the stroboscope emitting light at a predetermined timing.