JPS6175850A - Erroneous operation preventing and detecting mechanism of shuttle passing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention improves the malfunction prevention/detection mechanism of an automatic distribution machine. Specifically, in addition to being able to prevent threading errors in an automatic distribution machine, This invention relates to a highly reliable malfunction prevention/detection mechanism that can immediately and reliably detect a malfunction even if a single mistake occurs.

[Prior Art and Problems to be Solved] 3 The machine is installed on a stand and moves in the weaving width direction on a track 4 by engaging a pair of upper and lower blades with the blade 1 and moving the respective blades up and down. An automatic threading machine that threads the warp threads W one after another in a continuous flow is well known in the art (Fig. 7).1 It has become widely used because it can mechanically thread the warp threads with high efficiency.

However, even this convenient reed threading machine has the disadvantage that it often makes mistakes in threading the warp threads.

There was the inconvenience of not being able to take my eyes off the area during the running process. The cause of this is mrjB between the movement distance (stride width) of the two aircraft bodies and the pitch of the streaks, and as a result1, for example, jump insertion as shown in Figure 5 and double insertion as shown in Figure 6 occur. It is. Therefore.

As a countermeasure against such a reed insertion error, a proposal was made to light up a warning lamp to warn of the reed insertion error by using a mutual relationship between a movable contact and a fixed contact that respond to the movements of the two machine bodies (Tokuko Sho). 47-14068), but these days, as reeds with extremely high reed density or reeds with coarse reed density are used,
The reality is that such a device cannot cope with this problem at all, and instead issues a false alarm, resulting in unnecessary work stoppages, and the number of reed threading errors continues to be unreduced.

The present invention prevents frequent mistakes in reed threading by adopting a mechanism that accurately moves the reed threading machine main body on the track in a state that matches the pitch of the reed. The purpose of this project is to provide a new type of automatic threading machine that can accurately detect even a single threading error by converting it into a larger scale and having it read by a row recoding encoder. be.

[Means adopted to solve the problem]

The means adopted by the present invention to solve the above technical problems are as illustrated in the illustrated examples of FIGS. 1 to 3.

A pair of upper and lower blades 2 and 3 hooked to the reed 1 move up and down on a track 4 laid on nine machines in the weaving width direction, thereby moving the reed 1's flow marks R1, R2, and R3.
...In a reed threading machine that sequentially inserts the warp threads W into R and 1; racks 5 are arranged parallel to the track 4, and the racks 5 are coaxial with the movable roller 6 rolling on the track 4. large diameter gear 7
is provided and meshed with the rack 5 to enable positive movement, while the rotation angle of the large diameter gear 7 is increased by N times via the gear train (8, 9, 10). The increased rotation angle is measured by the low-return encoder 11, a quantitative movement signal corresponding to the value of the rotation angle is outputted, and the movement signal is outputted by the comparator 12 to the high value setting device 13. Malfunction prevention that detects malfunction by comparing with the critical value
It is characterized by the adoption of a detection mechanism.

However, the reed passing mechanism of the reed passing machine to which the present invention is applied is almost the same as that of the conventional machine shown in FIG. What is shown in Fig. 1 to Fig. 3 is the flow line R1, R2, etc. of lead 1.
・Upper plate 2 located on the upper side with respect to R and l
This is a system in which the warp threads W are sequentially inserted through the vertical movement of the lower plate 3 and the lower plate 3 on the lower side. More specifically, as shown in FIG. 3, the lower plate 3 has a guide plate spring 31 which is biased so as to come into contact with the upper plate 2, and a hook part 32 for hooking the warp threads W. When the cage 2 is moved upwardly by an action mechanism (not shown), the lower plate 3 is guided by the guide plate spring 31 and enters the stream where the upper plate 2 is located, where the warp threads W are hooked on the hook portions 32. The warp threads W are passed through the threads R1, R2, . Then, the moving roller 6 and the large-diameter gear 7 are rotated in accordance with the amount of movement of the upper blade 2. The large-diameter gear 7 is meshed with a rack 5 laid parallel to the track 4 on which the moving roller 6 travels, and rotates positively on the rank 5 without shaking, shifting, slipping, etc. , has a structure that faithfully reflects the amount of movement of the upper blade 2.

The large-diameter gear 7 is connected to a gear train (8, 9, 10), and the rotation angle of the final gear 10 is read by a low-resolution encoder 117. However.

The rotation angle of the large-diameter gear 7, which rotates in accordance with the amount of raking movement of the upper plate 2, is expanded by N times (e.g., 8 times) through the gear train (8, 9, 10). Therefore, accurate reading is possible even with a slight movement, and it is possible to handle reads with a high reed density.

The value read by the rotary encoder 11 is output as a quantitative movement signal, further amplified by an amplifier 15, and input to a comparator 12. On the other hand, since the predetermined threshold value is given to the comparator 12 by the threshold value setter 13, the comparator 12 compares the movement signal with the threshold value and detects that the absolute value has become larger than a certain value. At this time, a malfunction detection signal is output and input to the detector 14. Note that the signal output from the detector 14 is used, for example, as a signal to operate an alarm device (a pilot lamp or an alarm buzzer) or as a signal to control a main switch on the main body of the aircraft.

The mechanism of the present invention is generally constructed as described above.

The present invention is by no means limited to the illustrated example described above, and various modifications are contemplated within the scope of the claims. Regarding the relationship between the row encoder 1 and the
It goes without saying that the circuit processing of the moving signal outputted from 1 does not necessarily require the amplification P:115 as in the example shown in 1, and the design can be appropriately changed depending on design requirements.

[Effects of the present invention]

As explained above, in the mechanism of the present invention, ranks are arranged parallel to the track along which the moving roller moves, and the large-diameter gear meshes with the ranks to prevent the large diameter gear from swinging, shifting, slipping, etc. Since the main body of the machine is positively moved in accordance with the width, smooth automatic distribution is possible without almost any malfunctions such as jump insertion or double insertion, which were unavoidable in the past. Even if jump insertion or double insertion occurs for some reason, the rotation angle of the large diameter gear is expanded N times and this is measured by a rotary encoder. Smooth automatic distribution work can be performed without unnecessary machine stoppages due to erroneous detection of malfunctions, as is the case with machines.

In this way, according to the present invention, automatic distribution is possible with a level of accuracy that cannot be expected with conventional machines, and even if a malfunction occurs, it can be accurately detected without making a mistake, so troubles can be avoided. This provides significant advantages, such as a reduction in

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the mechanism showing the main parts of the present invention, Fig. 2 is a partial sectional view showing the relationship between the track, rack, moving roller, and large diameter gear in the mechanism of the present invention, and Fig. 4 is a diagram showing the relationship between the lead and the upper and lower plates. Fig. 4 is an explanatory diagram showing the normal reed insertion state, Fig. 5 is an explanatory diagram showing the jump insertion state, and Fig. 6 is the double insertion state. An explanatory diagram showing the state of. FIG. 7 is an explanatory diagram of the appearance of a conventionally known automatic distribution machine. ■...Lead, 2/3...Plaid, 4...Orbit. 5...Rank, 6...Moving cola, 7...Large diameter gear. (8, 9, 10) ... tooth row. 11...Rotary encoder, 12...Comparator. 13...Shiki value setter. R1, R2, R3...Rn...Stripe.

Claims (1)

[Claims] (1) A pair of upper and lower plates 2 and 3 hooked to reed 1
The track 4 laid on the machine base is lifted and lowered by
Move the top in the weaving width direction and check the reed pattern R_1・R of the corresponding lead 1.
In a reed threading machine that sequentially inserts warp threads W into _2, R_3...R_11; racks 5 are arranged parallel to the track 4, and a moving roller 6 rolling on the track 4 is installed. Large diameter gear 7 coaxially
is provided and meshed with the rack 5 to enable positive movement, while the rotation angle of the large diameter gear 7 is increased by N times via the gear train (8, 9, 10), thus increasing the rotation angle. The rotary encoder 11 measures the rotated angle, outputs a quantitative movement signal corresponding to the value of the rotation angle, and the comparator 12 compares the movement signal with the threshold value output from the threshold value setting device 13. A malfunction prevention/detection mechanism characterized by detecting malfunction by detecting malfunction.