CN107044008A - The detection control apparatus and detection method of a kind of sewing machine shuttle peg - Google Patents

Abstract

The invention belongs to the technical field of sewing machines, and relates to a detection and control device and a detection method for a sewing machine bobbin; the detection and control device for a sewing machine bobbin includes: a bobbin, a detection device and a control unit connected with the detection device, and the bobbin is used for winding Bottom line, a bright sector and a dark sector are provided on one or both sides of the bobbin; the detection device is used to send a detection signal to the bright sector and the dark sector of the bobbin, and the received The pulse signal is sent to the control unit; the control unit is used to receive the pulse signal sent by the detection control device, and identify the code of the used bobbin through the duty ratio of the pulse signal. The present invention can automatically identify more than two different bobbins.

Description

A detection control device and detection method for a sewing machine bobbin

technical field

The invention belongs to the technical field of sewing machines, and relates to a detection control device and a detection method for a sewing machine bobbin.

Background technique

The existing method and device for bobbin detection and recognition of sewing machines can only detect the condition of the bobbin in use in real time, and does not have the function of bobbin recognition. That is to say, after the bobbin is replaced, then the situation of the bobbin cannot be detected, which is very inconvenient to use.

Contents of the invention

The present invention aims at the above-mentioned problems existing in the prior art, and provides a detection control device and detection method for sewing machine bobbins. The technical problem to be solved by the present invention is: how to automatically identify two or more different bobbins.

The purpose of the present invention can be achieved through the following technical solutions:

One of the objects of the present invention is to provide a sewing machine bobbin detection and control device, including: bobbin, detection device and a control unit connected to the detection device, wherein:

The bobbin is used for winding the bottom thread, and a bright fan-shaped area and a dark fan-shaped area are arranged on one or both outer surfaces of the bobbin;

The detection device is used to send detection signals to the bright sector and the dark sector of the bobbin, and send the received pulse signal to the control unit;

The control unit is used for receiving the pulse signal sent by the detection device, and identifying the code of the used bobbin through the duty cycle of the pulse signal.

In the above detection and control device for a sewing machine bobbin, the control unit records and stores the code of the bobbin and the number of turns when winding the thread.

In the above detection and control device for a sewing machine bobbin, the control unit records and stores the code of the bobbin used and the number of turns of the bobbin when the bobbin is sewn and unwound. Calculate and record the number of turns of the remaining thread.

In the above detection and control device for a sewing machine bobbin, the control unit pre-stores the minimum number of remaining coils, and when the number of coils of remaining threads ≤ the pre-stored minimum number of remaining coils, the control unit controls the alarm device to operate, Prompts to replace the bobbin.

In the aforementioned detection and control device for a sewing machine bobbin, the alarm device is a buzzer or an LED light or a third-party device connected through an I/O signal or through a serial interface.

In the above detection and control device for a sewing machine bobbin, the bright sector is the metallic or light coating of the bobbin itself; the dark sector is the black coating.

In the above detection and control device for a sewing machine bobbin, the detection device is a photoelectric sensor.

Another object of the present invention is to provide a detection method for a sewing machine bobbin, which is applied to a detection control device for a sewing machine bobbin, comprising the following steps:

S1. The detection device sends a detection signal to the bright sector and the dark sector of the bobbin, and sends the received pulse signal to the control unit, and the control unit recognizes the code of the bobbin according to the duty cycle of the pulse signal;

S2, during winding, after the control unit recognizes the code of the bobbin, it records the number of turns of the bobbin and stores it;

S3. When unwinding, after the control unit recognizes the code of the bobbin, it records the unwinding number of the bobbin, calculates and stores the remaining thread amount on the bobbin.

In the above-mentioned detection method of a sewing machine bobbin, the minimum number of remaining coils is preset on the control unit. The device operates, prompting to replace the bobbin.

Compared with the prior art, the present invention has the following advantages:

1. The present invention detects the surface of the bobbin with the code through the detection device, and the control unit recognizes more than two different bobbins commonly used according to the duty cycle of the detected pulse signal, and records the winding time of each bobbin. situation and the remaining thread amount, after replacing the bobbin, the remaining thread of the bobbin can be judged by detecting the code of the bobbin, and it can be used according to the situation recorded by the control unit, which is simple and convenient to use.

2. The present invention is low in cost and does not need to make major changes to the existing sewing machine. It only needs to add a pair of sensors and corresponding mechanical brackets; no matter how many times the bobbin has been replaced during the entire detection process, the bobbin can still be effectively detected. The number of laps of the core remaining thread, and timely alarm prompt; provide users with accurate bottom thread usage information, ensure accurate and timely bobbin replacement, and avoid loss of materials and working hours caused by wireless empty seams; this invention is suitable for any type of bobbin New and used sewing machines.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Figure 2 is one of the schematic diagrams of the bobbin of the present invention.

Fig. 3 is the second schematic diagram of the bobbin of the present invention.

Fig. 4 is the third schematic diagram of the bobbin of the present invention.

Fig. 5 is a flowchart of the detection method of the present invention.

FIG. 6 is a schematic diagram of a signal duty cycle of the present invention.

In the figure, 1, the bobbin; 2, the detection device; 3, the control unit; 4, the bright fan-shaped area; 5, the dark fan-shaped area.

detailed description

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figure 1-6. The present invention provides a sewing machine bobbin detection and control device, comprising: a bobbin 1, a detection device 2 and a control unit 3 connected to the detection device 2, wherein:

The bobbin 1 is used to wind the bottom thread, and a code is provided on one or both outer sides of the bobbin 1, and the code is composed of a bright sector 4 and a dark sector 5; The center of the circle coincides with the center of bobbin 1. An outer side or two outer sides of the bobbin 1 of the present embodiment are divided into three situations: the bobbin 1a of the 1/4 dark fan-shaped area 5 as shown in Figure 2, the 1/2 dark fan-shaped as shown in Figure 3 The bobbin 1b of the district 5 and the bobbin 1c of the dark sector 5 of the 3/4 dark sector as shown in FIG. 4 .

The detection device 2 is used to send detection signals to the bright sector 4 and the dark sector 5 of the bobbin 1, and send the received pulse signal to the control unit 3;

The control unit 3 is used for receiving the pulse signal sent by the detection device 2, and identifying the code of the used bobbin 1 through the duty cycle of the pulse signal.

The detection device 2 is specifically a photoelectric sensor. Photoelectric sensors need to be installed and fixed by mechanical brackets. The photoelectric sensor outputs pulse signals (high and low levels) according to different reflection characteristics of incident light in different areas on the surface of the bobbin 1 . The bobbin 1 used is identified based on the measured pulse duty cycle. As shown in FIG. 5 , the dark sector 5 may obtain a signal as shown in section t, and the bright sector 4 may obtain a signal as T-t section. At this time, the signal t can be detected by the control unit 3: the value of T, if it is the bobbin 1a of the 1/4 dark sector 5 shown in Figure 2, the value obtained by the control unit 3 is about 0.25 , thereby identifying the bobbin 1a that is the 1/4 dark sector 5, and the other bobbins 1 are also identified in the same way.

Further, the control unit 3 records and stores the code of the bobbin 1 and the number of turns when the bobbin is wound. For example, the control unit 3 can recognize that the bobbin is the bobbin 1b of the 1/2 dark sector 5 as shown in Figure 3 according to the duty ratio of about 0.5. The generated pulse signal records the number of turns wound on the bobbin 1b, and is finally stored in the control unit 3, and other bobbins 1 are also recorded and stored in the same way.

Furthermore, due to the process of unwinding, the bobbin 1 is also rotating. Therefore, when sewing and unwinding, the control unit 3 also recognizes the code of the bobbin 1 used in the manner described above. When sewing and unwinding, the control unit 3 records the number of turns of the bobbin 1 that is released according to the pulse signals generated by the bright sector 4 and the dark sector 5, and the control unit 3 records the number of turns that the bobbin 1 has previously stored according to the coded bobbin 1. Calculate the number of turns of the remaining thread by making a difference between the number of turns and the number of turns of the current pay-off, and store it.

Since the coding of different bobbin cores 1 and the number of turns of remaining threads can be stored, the present invention can automatically identify 3 or more different bobbin cores 1 commonly used.

When sewing, the used bobbin 1 has not been used before, and the control unit 3 can read the stored winding number of the bobbin 1 . When using the bobbin 1 there is a possibility that it has been used in sewing before. Then the control unit 3 can read the number of turns of the remaining thread of the bobbin 1 according to the encoding of the bobbin 1 .

In order to prevent the bobbin 1 from running out of threads or continuing to sew, the control unit 3 pre-stores the minimum number of remaining coils. When the remaining number of coils, the control unit 3 controls the action of the alarm device and prompts to replace the bobbin 1. The minimum number of remaining stitches can be set according to the sewing task.

Specifically, the alarm device is a buzzer or an LED light or a third-party device connected through an I/O signal or through a serial interface.

In addition, the bright sector 4 is the metallic or light coating of the bobbin 1 itself; the dark sector 5 is a dark coating, preferably a black coating. Coatings can also be replaced by patches, such as light patches or dark patches.

Another object of the present invention is to provide a detection method for a sewing machine bobbin, which is applied to a detection control device for a sewing machine bobbin, comprising the following steps:

S1. The detection device 2 sends a detection signal to the bright sector 4 and the dark sector 5 of the bobbin 1, and sends the received pulse signal to the control unit 3, and the control unit 3 identifies the bobbin 1 according to the duty ratio of the pulse signal code;

S2, during winding, after the control unit 3 recognizes the encoding of the bobbin 1, it records the number of turns of the bobbin 1 and stores it;

S3. When unwinding, after the control unit 3 recognizes the code of the bobbin 1, it records the unwinding number of the bobbin 1, and calculates and stores the remaining thread amount on the bobbin 1.

S4. The minimum number of remaining coils is preset on the control unit 3. When it is detected that the current number of remaining coils of the bobbin 1 is less than or equal to the minimum number of remaining coils stored in advance, the control unit controls the action of the alarm device and prompts to replace the bobbin 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (9)

1. a kind of sewing machine shuttle peg detection control apparatus, it is characterised in that：Including：Peg or spindle, detection means and with detection means connect The control unit connect, wherein：

The peg or spindle is used to wind bottom line, and bright fan section and dark sector are provided with a lateral surface or two lateral surfaces for peg or spindle Area；

The detection means is used to send detection signal to the bright fan section of the peg or spindle and dark fan section, and by the arteries and veins received Signal is rushed to send to described control unit；

Described control unit is used to receive the pulse signal that the detection means is sent, and the duty ratio identification for passing through pulse signal The coding of peg or spindle used.

2. a kind of detection control apparatus of sewing machine shuttle peg according to claim 1, it is characterised in that：Described control unit Record and store the coding of peg or spindle and in coiling around the number of turns.

3. a kind of detection control apparatus of sewing machine shuttle peg according to claim 2, it is characterised in that：Described control unit Record and store the coding of peg or spindle used and the number of turns of peg or spindle sewing unwrapping wire when institute unwrapping wire, control unit according to peg or spindle institute around The number of turns and the number of turns of unwrapping wire calculate and record the number of turns of remaining line.

4. a kind of detection control apparatus of sewing machine shuttle peg according to claim 3, it is characterised in that：Described control unit In prestore minimum remaining coil number, when the minimum remaining coil number of the number of turns≤prestore of remaining line, control unit control alarm Device action, points out to change peg or spindle.

5. a kind of detection control apparatus of sewing machine shuttle peg according to claim 4, it is characterised in that：The warning device The third party device connected for buzzer or LED or by I/O signals or by serial line interface.

6. a kind of detection control apparatus of sewing machine shuttle peg according to claim 1, it is characterised in that：The bright fan section For peg or spindle metallochrome in itself or light coating；The dark fan section is painting black layer.

7. a kind of detection control apparatus of sewing machine shuttle peg according to claim 1, it is characterised in that：The detection means For photoelectric sensor.

8. a kind of detection method of sewing machine shuttle peg, applied to a kind of detection control apparatus of sewing machine shuttle peg, it is characterised in that： Comprise the following steps：

S1, detection means send detection signal to the bright fan section of peg or spindle and dark fan section, and are received to control unit transmission Pulse signal, control unit is according to the coding of the duty ratio identification of the pulse signal peg or spindle；

When S2, coiling, after the coding of control unit identification peg or spindle, record the peg or spindle around the number of turns, and store；

When S3, unwrapping wire, after the coding of control unit identification peg or spindle, the unwrapping wire number of turns of the peg or spindle is recorded, by calculating peg or spindle On remaining line amount and store.

9. a kind of detection method of sewing machine shuttle peg according to claim 8, it is characterised in that：Preset and deposit in control unit There is minimum remaining coil number, when detecting the minimum remaining coil number for the current remaining coil number of peg or spindle≤prestore, control unit Warning device action is controlled, points out to change peg or spindle.