Needle selector reliability detection system

Abstract

The invention provides a needle selector reliability detection system which comprises a needle selector, a detection device, a fixing device, a main control device and a display screen, the needle selector and the detection device are in communication connection with the main control device, the main control device is in communication connection with the display screen, and an included angle is formed between the fixing position of the needle selector and the fixing position of the detection device; the detection device comprises a groove type correlation infrared sensor, a control element and a circuit board, the groove type correlation infrared sensor and the control element are fixedly connected to the circuit board, and the circuit board is fixed to the fixing device; the groove-shaped correlation type infrared sensor collects electric signals generated when the tool bit moves and sends the electric signals to the control element, the display screen displays received data and generates a report to judge whether the reliability of the needle selector meets the requirement or not, and the system achieves intelligent detection of the reliability of the needle selector and improves the reliability of the needle selector. And the conditions of abnormal jacquard weaving and fabric waste in actual operation caused by the quality problem of the needle selector are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of selector detection, and in particular, to a reliability detection system for a selector. Background Art

[0002] The selector is a key component that determines the working quality of the jacquard machine, and its failure may lead to a decline in jacquard quality. Traditional selector detection means mainly focus on the durability of the overall structure and the response speed, but there is a lack of a reliability detection system specifically for the cutter head.

[0003] In the prior art, selector detection mostly relies on manual monitoring. After allowing all selectors to work for a period of time, it is checked whether there are selectors that stop working. This detection method has low efficiency, long duration, single test, and cannot provide improvement solutions, making it difficult to meet the requirements of modern high-efficiency production. Therefore, there is a need for an efficient, accurate, and intelligent reliability detection system for selectors. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a reliability detection system for a selector to meet the requirements of modern high-efficiency production.

[0005] To solve the above technical problems, the technical solution of the present invention is: A reliability detection system for a selector, including a selector, a detection device, a fixing device, a main control device, and a display screen. The selector and the detection device are communicatively connected to the main control device, the main control device is communicatively connected to the display screen, and an included angle is formed between the fixing position of the selector and the fixing position of the detection device. The detection device includes a groove type transmissive infrared sensor, a control element, and a circuit board. The groove type transmissive infrared sensor and the control element are fixedly connected to the circuit board, and the circuit board is fixed to the fixing device. The groove type transmissive infrared sensor collects the electrical signals generated during the movement of the cutter head and sends the electrical signals to the control element.

[0006] As a preferred solution of the present invention, a front stop block and a rear stop block are fixed on the bottom plate of the fixing device. A fixing cavity for positioning the selector is formed between the front stop block and the rear stop block, and a set screw that abuts against the selector is threadedly connected to the front stop block.

[0007] As a preferred solution of the present invention, the control element sends the electrical signals to the main control device. The main control device processes the data and generates a report. The main control device displays the number of cuts, frequency, and alarm information through the display screen.

[0008] As a preferred embodiment of the present invention, when the cutter head moves relative to the groove type transmissive infrared sensor, the electrical signal generated by the groove type transmissive infrared sensor is in the form of high and low level changes; when simultaneously detecting multiple selector devices, each selector device is numbered by a combination of software and hardware.

[0009] In summary, the present invention has the following beneficial effects: 1. The cutter head is located at the middle position of the groove type transmissive infrared sensor. By tightening the set bolt, the groove type transmissive infrared sensor is connected to the main control device. When replacing the selector device, only need to loosen the set bolt. After installation, only need to set the requirements on the display screen to start the test. The operation is convenient, the detection accuracy is high, and batch detection can be carried out, improving the production efficiency of the enterprise.

[0010] 2. Through precise analysis of the electrical signals collected by the groove type transmissive infrared sensor, the movement times and frequencies of multiple cutter heads are detected. By comparing the changes in the movement times and frequency amplitudes of each cutter head, it is automatically determined whether the reliability of the cutter head meets the requirements. The detection data and judgment results are displayed on the display screen in real time, and an alarm is given for abnormal cutter heads, which is convenient for the staff to observe and process intuitively.

[0011] 3. The detection system can record historical detection data, providing a basis for subsequent data analysis and product improvement; the present invention has the characteristics of high detection accuracy, strong real-time performance, good intuitive effect, low cost, high efficiency, compact structure, simple operation, and batch detection, etc. It can reduce the time and cost of manual detection and improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the model structure of the present invention; Figure 2 is Figure 1 an enlarged schematic view of part A in Figure 3 is a three-dimensional schematic diagram of the selector device and the detection device; Figure 4 is a schematic diagram showing the position of the rear stop block; Figure 5 is a flow chart for detecting and judging the number of cutters; Figure 6 is a flow chart for detecting and judging the frequency.

[0013] Reference numerals: 1, selector device; 2, upper limit; 3, lower limit; 4, cutter head; 5, groove type transmissive infrared sensor; 6, detection device; 7, fixing device; 8, control element; 9, circuit board; 10, side card slot; 11, positioning block; 12, set bolt; 13, rear stop block; 14, front stop block; 15, main control device; 16, display screen. Detailed implementation manners

[0014] The following further details the specific implementation manners of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0015] As shown in the figure, a reliability detection system for a selector includes a cutter head 4 and a side card slot 10. A positioning block 11 is fixedly connected to a fixing device 7, and the positioning block 11 is placed in the side card slot 10. A front stop block 14 and a rear stop block 13 are fixed to the bottom plate of the fixing device 7. A fixing cavity for positioning the selector 1 is formed between the front stop block 14 and the rear stop block 13. Both sides of the selector 1 are respectively in contact with the front stop block 14 and the rear stop block 13, and a set screw 12 that abuts against the side wall of the selector 1 is threadedly connected to the front stop block 14.

[0016] The detection device 6 includes a groove type opposed infrared sensor 5, a control element 8, and a circuit board 9. The groove type opposed infrared sensor 5 and the control element 8 are fixedly connected to the circuit board 9. One cutter head 4 corresponds to one groove type opposed infrared sensor 5. The circuit board 9 is fixed to the fixing device 7. The number of cutter heads 4 is sixteen. An included angle is formed between the fixing position of the selector 1 and the fixing position of the detection device 6, and the included angle is 146.53°.

[0017] During initialization, the lower limit 3 of the selector 1 is in the middle position of the groove type opposed infrared sensor 5 or the upper limit 2 of the selector 1 is on one side of the groove type opposed infrared sensor 5. The control element 8 and the selector 1 are connected to the CAN0 port of the main control device 15 through the CAN bus. The wiring of the selector 1 is connected to the CAN1 port of the main control device 15. The main control device 15 is connected to the display screen 16 through an Ethernet cable. All power supply devices are powered by 24V.

[0018] When the cutter head 4 is at the upper limit 2 or the lower limit 3, the photoelectric switch on the groove type opposed infrared sensor 5 will open and close. Each time the photoelectric switch opens or closes, it is regarded as one swing of the cutter head. When the photoelectric switch opens or closes once, an electrical signal will be sent to the control element 8. The electrical signal is in the form of high and low levels. The control element 8 triggers counting through the rising edge or falling edge of the high and low levels, and at the same time starts timing. When the next trigger arrives, the system time is recorded again. The upper and lower times are subtracted to obtain the frequency when the cutter head swings up and down, and the timing continues. The new frequency is obtained by subtracting the time from the previous time. The distance between the groove type opposed infrared sensors 5 is a certain parameter, and the cutter heads with the same distance as this parameter can all be tested.

[0019] During the aging test of the selector 1, the groove type transmissive infrared sensor 5 converts the signal of the movement of the cutter head 4 into an electrical signal and transmits it to the control element 8 on the detection device 6. The control element 8 stores the collected data, analyzes each stored data at regular intervals, finds the cutter head 4 with the most identical movement times of all cutter heads 4 as the standard judgment, compares all cutter heads 4 with it, finds the cutter heads 4 with different numbers of blades, and accumulates the number of error occurrences of this cutter head 4. Each cutter head 4 is numbered separately, with a total of sixteen cutter numbers.

[0020] By continuously collecting data and analyzing the data at regular intervals to obtain a new standard judgment and conducting multiple comparisons, when the number of error occurrences of a cutter number reaches the set error standard, it is marked as an error cutter number, and the error cutter number and all cutter head swing times are processed as alarm data. When no error cutter number appears, only the blade number data is transmitted.

[0021] For the situation where the movement times of the cutter heads are the same but the frequencies may be different, a frequency detection method is set. The swing frequency of the cutter head 4 is obtained by taking the difference between the time when the previous optoelectronic switch is turned on and the time when the next optoelectronic switch is turned on to get the time interval. The control element 8 collects the frequency information of all cutter heads 4 at regular intervals to obtain the arithmetic mean value, obtains the residual error value of all cutter heads through the arithmetic mean value, and then calculates the standard deviation σ. According to the 3σ principle (Leyte criterion), the residual error value obtained by each cutter head 4 is compared with 3σ. If it is greater than 3σ, it is a gross error, and it is determined that the frequency of this cutter number is abnormal. The abnormal alarm feedback information and frequency information are sent to the main control device 15 through the CAN bus.

[0022] The main control device 15 receives the data sent by the detection device 6 for parsing and processing, and sends the processed data to the display screen 16 through the Ethernet cable. The display screen 16 parses and processes the received data. When an alarm message appears in the data, the cutter head image corresponding to the corresponding channel and cutter number will be marked in red on the display page as an alarm anomaly, and the received blade number information is displayed in real time in the statistical box behind the cutter head image.

[0023] After the frequency data is processed, it is placed in the image function of the display screen 16. By clicking the image function button, a frequency curve fluctuation graph is displayed. According to the selection of different cutter numbers, the frequency change conditions of different cutter heads can be observed, and the blade number and frequency change conditions are generated into a report for subsequent data recording to help improve the reliability of the selector.

[0024] The staff can set the swing speeds of the sixteen cutter heads and the total number of swings for testing on the display screen 16, or can also test a single selector 1. After the setting is completed, there is no need to stay. The display screen 16 will record the received data for display and generate a detection report, reducing manual time and costs and facilitating the improvement of work efficiency.

[0025] When detecting multiple needle selectors, it is necessary to set numbers for each detection device 6 and each needle selector 1 before work to ensure that the main control device 14 and the display screen 16 can accurately determine which needle selector the data information belongs to during data transmission. Each detection device 6 and needle selector 1 press the buttons designed in hardware. In terms of software, a request number instruction is sent to the main control device 15 by judging the state of the buttons. The main control device 15 will parse and convert the data and send it to the display screen 16. The digital number is manually set on the display screen 16 and the set data is sent to the main control device 15. The main control device 15 parses, converts and sends it to each detection device 6 and needle selector 1. After each detection device 6 and needle selector 1 receive the number information, they write it into the memory and send a feedback message. If the display screen 16 receives the feedback message, the number setting is successful.

[0026] The slot-type opposed infrared sensor 5 is used to detect the movement of each cutter head 4. Due to the high sensitivity and fast response speed of the optoelectronic switch in the sensor, the detection accuracy is improved, and it can detect the needle selector with 16 cutter heads or less in the detection device parameters. The detection data is used to display the status of the cutter head 4 on the display screen 16 in real time. By installing multiple detection devices 6, the simultaneous testing of sixteen-way needle selectors can be realized, improving the detection efficiency. To sum up, the present invention has the characteristics of high detection accuracy, strong real-time performance, good intuitive effect, low cost, high efficiency, compact structure, simple operation, and batch detection, etc. It can reduce the time and cost of manual detection and improve production efficiency.

[0027] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A needle selector reliability detection system, characterized in that: The invention comprises a needle selector (1), a detection device (6), a fixing device (7), a main control device (15), and a display screen (16); the needle selector (1) and the detection device (6) are communicatively connected to the main control device (15); the main control device (15) is communicatively connected to the display screen (16); and an angle is formed between the fixing position of the needle selector (1) and the fixing position of the detection device (6); The detection device (6) comprises a slot-type opposing-beam infrared sensor (5), a control element (8), and a circuit board (9); the slot-type opposing-beam infrared sensor (5) and the control element (8) are fixedly connected to the circuit board (9); and the circuit board (9) is fixed to the fixing device (7); The slot-shaped opposing infrared sensor (5) collects the electrical signal generated when the cutter head (4) moves, and sends the electrical signal to the control element (8).

2. The needle selector reliability detection system according to claim 1, characterized in that: A front stopper (14) and a rear stopper (13) are fixed to the bottom plate of the fixing device (7), a fixing cavity for positioning the needle selector (1) is formed between the front stopper (14) and the rear stopper (13), and a fixing bolt (12) is threadedly connected to the front stopper (14) and is pressed against the needle selector (1).

3. The needle selector reliability detection system according to claim 1, characterized in that: The control element (8) sends an electrical signal to a main control device (15), and the main control device (15) processes the data and generates a report. The main control device (15) displays the knife number and frequency as well as alarm information through a display screen (16).

4. A needle selector reliability detection system according to claim 3, characterized in that: When the cutter head (4) moves relative to the slot-type infrared sensor (5), the electrical signal generated by the slot-type infrared sensor (5) is in the form of high and low level changes; when multiple needle selectors (1) are detected simultaneously, each needle selector (1) is numbered by combining software and hardware.

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