CN210737027U

CN210737027U - Broken warp segmented display device of warp stop frame

Info

Publication number: CN210737027U
Application number: CN201921647227.XU
Authority: CN
Inventors: 陈玉升
Original assignee: Changshu Chang Xin Textile Equipment Co ltd
Current assignee: Changshu Chang Xin Textile Equipment Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-12
Anticipated expiration: 2029-09-29

Abstract

A broken warp segmented display device of a warp stop frame belongs to the technical field of shuttleless looms. Including emitting diode LED, first resistance R1, second resistance R2, triode Q and MCU, the one end of first resistance R1 and MCU's input be connected the one end of broken warp detection switch JP jointly, emitting diode LED's negative pole is connected to first resistance R1's the other end, emitting diode LED's positive pole is connected DC power supply V +, the one end of second resistance R2 is connected to MCU's output, triode Q's base is connected to second resistance R2's the other end, triode Q's collecting electrode is connected and is stopped the warp and detect the box. The advantages are that: the lighting of the LED is not influenced by the broken warp signal, and the problem that the indicating lamp is not lighted due to poor contact of the dropper in the prior structure can be avoided.

Description

Broken warp segmented display device of warp stop frame

Technical Field

The utility model belongs to the technical field of shuttleless looms, concretely relates to dropper sectional display device.

Background

The shuttleless looms are provided with warp stopping frames, the warp stopping frames are used for arranging warp stopping strips, warp stopping sheets are arranged on the warp stopping strips in series, each warp stopping sheet penetrates through one warp, the warp stopping sheets are suspended on the warp stopping strips by utilizing a tube bundle of the warp, and at the moment, the chips on the warp stopping strips are in a non-conduction state with the package iron. When a certain warp yarn is broken, the warp stop sheet which is originally in a suspended state falls onto the warp stop strip due to the fact that the tube bundle of the warp yarn is lost, the chip which is in an insulation separation state is conducted with the package iron, signals are fed back to the electrical control box of the loom through the warp stop strip junction box on the warp stop frame, the loom is stopped, then a stoper finds out broken warp yarns and continues to connect the broken warp yarns, and the loom resumes to work. However, since the number of warp yarns is thousands of the number of the drop wires, once the warp is broken, the broken warp yarns cannot be quickly and accurately found by a worker observing the drop frame with naked eyes.

Chinese patent application publication No. CN103060988A describes a "warp stop display control device for a warp stop frame", wherein the warp stop display circuit includes a first circuit, a second resistor, a first transistor VT and a first light emitting diode LED1, and the first transistor VT is turned on only when the warp stop phenomenon does occur, so that the first light emitting diode LED1 is turned on. However, the above circuit has been found to have drawbacks in practical applications: the drop wire often has the problem of poor contact due to on-site flocks and dust, once the drop wire is in poor contact, the broken warp signal is interrupted, and even if the broken warp phenomenon does occur, the first light emitting diode LED1 cannot be lightened, so that a vehicle stop worker cannot find out broken warp and connect the broken warp at the first time, and the quality of finished products and the working efficiency of the weaving machine are finally influenced.

In view of the above-mentioned prior art, the applicant has made an advantageous design, and the technical solutions described below have been made in this context.

Disclosure of Invention

An object of the utility model is to provide a warp stop frame cracked ends segmentation display device, it is stable and reliable to the demonstration of cracked ends, can make things convenient for the car stop man in time, accurately to find cracked warp and continue to connect.

The utility model aims at achieving the purpose, a warp stop frame cracked ends segmentation display device, its characterized in that: the device comprises a Light Emitting Diode (LED), a first resistor R1, a second resistor R2, a triode Q and an MCU, wherein one end of the first resistor R1 is connected with one end of the broken warp detection switch JP together with the input end of the MCU, the other end of the first resistor R1 is connected with the negative electrode of the LED, the positive electrode of the LED is connected with a direct current power supply V +, the output end of the MCU is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the base electrode of the triode Q, the collector electrode of the triode Q is connected with a warp stop detection box, and the emitter electrode of the triode Q and the other end of the broken warp detection switch JP are grounded together.

In a specific embodiment of the utility model, still include first diode D1 and second diode D2, first diode D1 positive pole with triode Q's collecting electrode connect the drop-off warp detection box jointly, second diode D2 establishes ties between MCU's input and break-off warp detection switch JP to the positive pole is connected with first resistance R1's one end and MCU's input, and the one end of break-off warp detection switch JP is connected jointly to first diode D1's negative pole and second diode D2's negative pole.

The utility model discloses owing to adopted above-mentioned structure, compare with prior art, the beneficial effect who has is: the lighting of the LED is not influenced by the broken warp signal, and the problem that the indicating lamp is not lighted due to poor contact of the dropper in the prior structure can be avoided; in addition, the broken warp state can be distinguished, and when the broken warp occurs, if the signal is stable after the broken warp, the light emitting diode LED is normally on, and if the broken warp signal is interrupted, the light emitting diode LED flickers.

Drawings

Fig. 1 is an electrical connection diagram according to an embodiment of the present invention.

Fig. 2 is a logic diagram of the working principle of the MCU according to the present invention.

Fig. 3 is a schematic view of an embodiment of a warp stop frame.

Fig. 4 is a schematic diagram of an electrical connection according to another embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions, and any changes made in the form of the present invention rather than the essential changes should be considered as the protection scope of the present invention.

Example 1:

referring to fig. 1, a dropper sectional display device includes a light emitting diode LED, a first resistor R1, a second resistor R2, a transistor Q, and an MCU, preferably an MCU packaged with SOT 23-6. One end of the first resistor R1 and the input end of the MCU are connected with one end of the warp breakage detection switch JP, the other end of the first resistor R1 is connected with the negative electrode of the light emitting diode LED, the positive electrode of the light emitting diode LED is connected with the direct current power supply V +, the output end of the MCU is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the base electrode of the triode Q, the collector electrode of the triode Q is connected with the warp breakage detection box, and the emitting electrode of the triode Q and the other end of the warp breakage detection switch JP are grounded together.

Referring to fig. 2, when the detection pins (pins 1 and 3) of the MCU as the input end detect that the external break-in trigger signal changes to a low level state (falling edge trigger), the output ends (pins 6 and 4) change from an initial state to a high level state and remain; when the input end detects that the break trigger signal restores to the high level (rising edge trigger), the input end starts to perform high-low level conversion once at an interval of 500ms, and the output end is delayed by 200 ms and then converted into the low level after 300 ms. The MCU restores the initial state by power failure.

Referring to fig. 3, in practical application, the present invention is generally installed on the warp stop strip 1 and connected to the control circuit in the warp stop detection box 2. A plurality of warp stop strip 1 is provided with a plurality of warp stop segment display devices at intervals, and each warp stop segment display device corresponds to a warp stop sheet 3. The broken warp detection switch JP comprises a warp stop strip chip, a package iron and a warp stop sheet 3 in the prior art, when warp yarns are broken, the warp stop sheet 3 is changed from a suspended state to a falling state due to the fact that a tube bundle of the warp yarns is lost, the chip is conducted with the package iron at the moment, and the broken warp detection switch JP is closed. This part is the prior art and is omitted here for brevity.

With reference to fig. 1, when the warp broken detection switch JP detects that the warp is broken, the connection between a and b is maintained, and one end of the first resistor R1 and the input end of the MCU are grounded, so that the series branch of the LED and the first resistor R1 forms an electrical circuit, and the LED is turned on to indicate to the warp stop worker that the warp broken occurs. At the moment, after receiving the low level at the input end, the MCU outputs a high level at the output end, the high level acts on two ends of the second resistor R2, the second resistor R2 provides a high level for the base electrode of the triode Q, so that the triode Q is conducted and grounded, a signal S on the collector electrode of the triode Q is pulled down to be a low-potential signal and is transmitted to the warp stop detection box after being maintained for several seconds, and the signal S is detected by the warp stop detection box and fed back to the control circuit to be a parking signal.

When a vehicle stop worker finds the broken warp and finishes the continuous connection, the broken warp detection switch JP is disconnected, the serial branch circuit of the light emitting diode LED and the first resistor R1 is disconnected with the ground, the light emitting diode LED is extinguished, at the moment, a signal at the input end of the MCU is changed into a high level from a low level, an output signal at the output end is changed into a low level from a high level, and meanwhile, the level at the input end of the MCU is subjected to high-low level switching with time intervals, so that the light emitting diode LED and the first resistor R1 are connected to the direct current power supply V + in series for intermittent on-off switching, and the light emitting diode LED presents intermittent flicker. In the structure, once the warp stop signal is obtained, the light emitting diode LED can be immediately lightened, so that the problem that the indicating lamp is not lightened due to poor contact of the dropper in the prior structure can be avoided; in addition, the broken warp state can be distinguished, and when the broken warp occurs, if the signal is stable after the broken warp, the light emitting diode LED is normally on, and if the broken warp signal is interrupted, the light emitting diode LED flickers.

Example 2:

referring to fig. 4, in the present embodiment, compared to embodiment 1, the warp stop frame segmented display device further includes a first diode D1 and a second diode D2. One end of the first resistor R1 and the input end of the MCU are connected with the anode of the second diode D2, the cathode of the second diode D2 and the cathode of the first diode D1 are connected with one end of the break-through detection switch JP, the other end of the first resistor R1 is connected with the cathode of the light-emitting diode LED, the anode of the light-emitting diode LED is connected with the direct-current power supply V +, the output end of the MCU is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the base of the triode Q, the collector of the triode Q and the anode of the first diode D1 are connected with the warp stop detection box, and the emitter of the triode Q and the other end of the break-through detection switch JP are grounded together.

When the broken warp detection switch JP detects that the warp is broken, the broken warp detection switch is closed, the connection between the a and the b is kept, the series branch of the light-emitting diode LED, the first resistor R1 and the second diode D2 forms an electric loop, and the light-emitting diode LED is lightened to prompt a worker to break the warp. At this time, the signal S changes the original high level into the low level through the first diode D1, and at the same time, the input end of the MCU outputs a high level through the second diode D2 after detecting that the level has changed into the low level, and the high level is applied to both ends of the second resistor R2, and the second resistor R2 provides a high level to the base of the triode Q, so that the triode Q is turned on and grounded, and the signal S is further pulled down into a low level signal and transmitted to the warp stop detection box after being maintained for several seconds, and the signal S is detected by the warp stop detection box and fed back to the control circuit as a stop signal. In the circuit, even if the MCU is abnormal, the display device can be continuously used by the loop formed by the first diode D1 and the second diode D2, and the stable output of the abnormal alarm is realized.

When the worker finds the broken warp and completes the continuous connection, the broken warp detection switch JP is turned off, the signal S is restored to the original high level through the first diode D1, the series branch of the light emitting diode LED, the first resistor R1 and the second diode D2 is disconnected with the ground, and the light emitting diode LED is turned off. At the moment, the signal at the input end of the MCU is changed from low level to high level, the output signal at the output end is changed from high level to low level, and meanwhile, the level at the input end of the MCU is subjected to high-low level switching with time intervals, so that the light emitting diode LED and the first resistor R1 are connected to the direct current power supply V + in series for intermittent on-off switching, and the light emitting diode LED is further subjected to intermittent flicker.

Claims

1. A warp stop frame broken warp segmented display device is characterized in that: the device comprises a Light Emitting Diode (LED), a first resistor R1, a second resistor R2, a triode Q and an MCU, wherein one end of the first resistor R1 is connected with one end of the broken warp detection switch JP together with the input end of the MCU, the other end of the first resistor R1 is connected with the negative electrode of the LED, the positive electrode of the LED is connected with a direct current power supply V +, the output end of the MCU is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the base electrode of the triode Q, the collector electrode of the triode Q is connected with a warp stop detection box, and the emitter electrode of the triode Q and the other end of the broken warp detection switch JP are grounded together.

2. The drop wire stand broken warp segmented display device according to claim 1, further comprising a first diode D1 and a second diode D2, wherein the anode of the first diode D1 is connected with the collector of said transistor Q in common to the drop wire detection box, the second diode D2 is connected in series between the input terminal of the MCU and the broken warp detection switch JP, and the anode is connected with one end of a first resistor R1 and the input terminal of the MCU, and the cathode of the first diode D1 is connected with the cathode of the second diode D2 in common to one end of the broken warp detection switch JP.