Yarn break separation and capture device and method for ring spinning frame

Abstract

The present invention discloses a broken yarn separation and capture device and method for a ring spinning frame, relating to the technical field of automatic jointing of ring spinning frames; the device includes a yarn suction end effector and a driving base, and the yarn suction end effector is installed on the driving base; the yarn suction end effector includes a yarn suction nozzle, a yarn clamping component, a broken yarn monitoring component, a self-cleaning component, a yarn suction pipe and a proximity switch; the yarn suction nozzle is connected to one end of the yarn suction pipe close to the broken yarn bobbin, and the other end of the yarn suction pipe is connected to a negative pressure source; the yarn clamping components are symmetrically connected to the pipe wall of the yarn suction pipe and are located behind the yarn suction nozzle for clamping or releasing the captured broken yarn; the broken yarn monitoring component is connected to the pipe wall of the yarn suction pipe and is located behind the yarn clamping component; the self-cleaning component is connected to the pipe wall of the yarn suction pipe. The present invention realizes the separation and capture of broken yarns at the original broken yarn spindle position after the broken yarn in the ring spinning frame, reduces the complexity of the structure of the automatic jointing device, and improves the stability of broken yarn separation and capture.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic splicing technology for ring spinning frames, and particularly relates to a broken yarn separation and capture device and method for ring spinning frames. Background Art

[0002] In ring spinning production, the phenomenon of broken yarn is inevitable. After the yarn breaks, the broken end of the spun yarn will wind around the bobbin. To resume the spinning operation, it is necessary to brake and stop the spindle with the broken yarn, separate and capture the broken yarn, pass the broken yarn through the traveller, the balloon ring and the yarn guide hook in sequence, and finally draw the broken yarn to the front roller for splicing to complete the joint. In this process, quickly separating the broken yarn from the bobbin and accurately capturing it can ensure the subsequent automatic splicing process. This technology is also the key technology restricting the splicing success rate and stability of the automatic splicing device at present.

[0003] Patent EP3556918A1 discloses a broken yarn separation device for a spinning frame. This device is located slightly below the ring rail in front of the ring rail of the spinning frame and can be installed at any position along the vertical direction of the bobbin. Preferably, it is installed at the bottom of the bobbin. It uses a group of nozzles located in front of the bobbin and on the left and right sides to blow air to blow up the broken yarn on the bobbin to achieve the purpose of separating the broken yarn. The disadvantages of this device are that the ability of the airflow to separate the broken yarn will weaken as the distance between the nozzle and the broken yarn increases. At the same time, if its relative position with respect to the bobbin is changed, there will be a blind area for separating the broken yarn; another disadvantage is that this device may interfere with the moving ring rail and balloon ring.

[0004] Patent US4404791A discloses a photoelectric broken yarn monitoring device. The light source and the light receiving end of this device are placed outside the yarn suction tube and the yarn suction tube here is made of a transparent material, and the light can pass through the tube wall of the yarn suction tube to reach the light receiving end. When a broken yarn occurs, the broken yarn strand will block the light, and thus the broken yarn can be monitored. The disadvantage of this device is that the broken yarn strand will gradually deposit or adhere to the inner wall of the yarn suction tube, resulting in the obstruction of the monitoring light and the inability to normally monitor the broken yarn.

[0005] Therefore, the present invention proposes a broken yarn separation and capture device and method for a ring spinning frame, which can track, separate and capture the broken yarn on the original spindle position of the spinning frame, actively avoid obstacles (avoid the balloon ring), and can regularly self-clean the broken yarn monitoring sensor, reducing the complexity of the structure of the automatic splicing device and improving the stability of broken yarn separation and capture. Summary of the Invention

[0006] The purpose of the present invention is to provide a broken yarn separation and capture device and method for a ring spinning frame to solve or reduce the problems in the prior art such as unreliable broken yarn separation in the process of broken yarn separation and capture of the spinning frame bobbin, easy interference between the yarn capture device and the moving balloon ring, and abnormal broken yarn monitoring of the broken yarn capture monitoring device easily affected by the broken yarn strand.

[0007] To achieve the above object, the present invention is implemented by the following technical solutions:

[0008] A broken yarn separation and capture device for a ring spinning frame, comprising a yarn suction end effector and a driving base, and the yarn suction end effector is installed on the driving base;

[0009] The yarn suction end effector includes a yarn suction nozzle, a yarn clamping member, a broken yarn monitoring member, a self-cleaning member, a yarn suction pipe and a proximity switch;

[0010] The yarn suction nozzle is connected to one end of the yarn suction pipe close to the broken yarn bobbin, and the other end of the yarn suction pipe is connected to a negative pressure source. The yarn suction nozzle is used for negative pressure suction and separation of broken yarns;

[0011] The yarn clamping members are symmetrically connected to the tube wall of the yarn suction pipe and are located behind the yarn suction nozzle, and are used for clamping or releasing the captured broken yarn;

[0012] The broken yarn monitoring member is connected to the tube wall of the yarn suction pipe and is located behind the yarn clamping member, and is used for monitoring whether there is a captured broken yarn;

[0013] The self-cleaning member is connected to the tube wall of the yarn suction pipe and is located between the yarn clamping member and the broken yarn monitoring member, and is used for jetting and cleaning the part of the tube wall of the yarn suction pipe where the broken yarn monitoring member is located;

[0014] The proximity switch is connected to the lower part of the yarn suction nozzle and is used for measuring the distances between the yarn suction nozzle and the balloon ring and the ring rail.

[0015] Preferably, the yarn suction end effector further includes a distance measuring member, and the distance measuring members are symmetrically connected to the upper and lower sides outside the yarn suction pipe and are located between the yarn suction nozzle and the yarn clamping member, and are used for measuring the distances between the upper and lower sides of the yarn suction nozzle and the outer layer of the yarn on the broken yarn bobbin.

[0016] Furthermore, the distance measuring member adopts an ultrasonic sensor, a laser sensor or an infrared sensor.

[0017] Preferably, the yarn clamping member includes two clamping surfaces symmetrically arranged along the central axis of the yarn suction pipe. The opposite surfaces of the two clamping surfaces are smooth surfaces, and the opposite surfaces of the two clamping surfaces are both connected with a driving source for synchronous driving. The driving source is a cylinder, an electric push rod or a motor.

[0018] Preferably, the broken yarn monitoring member adopts a photoelectric sensor, a capacitive sensor or a pneumatic sensor.

[0019] Preferably, the self-cleaning component includes a self-cleaning nozzle, which is an inclined opening on the tube wall of the yarn suction tube, and the bottom end of the inclined opening faces the yarn break monitoring component. The self-cleaning nozzle is connected to a compressed gas storage device, and a solenoid valve is installed on the self-cleaning nozzle to control the on-off of the compressed gas.

[0020] Preferably, the proximity switch adopts a photoelectric proximity switch, an inductive proximity switch, a Hall proximity switch or an ultrasonic proximity switch.

[0021] Preferably, the driving base includes a horizontal slider, a horizontal slideway, a vertical slider, a vertical slideway, a lateral swing element and a longitudinal swing element;

[0022] The horizontal slider is horizontally slidably connected to the horizontal slideway, and the horizontal slider is used to drive the yarn suction end effector to move horizontally.

[0023] The vertical slider is vertically slidably connected to the vertical slideway, and the vertical slideway is vertically connected to the horizontal slider. The vertical slider is used to drive the yarn suction end effector to move vertically.

[0024] The lateral swing element is connected to the vertical slider, and the lateral swing element is used to control the movement of the yarn suction end effector in the horizontal plane.

[0025] The upper part of the longitudinal swing element is connected to the lateral swing element, and the lower part of the longitudinal swing element is connected above the yarn suction tube and is located behind the yarn break monitoring component, and is used to control the movement of the yarn suction end effector in the vertical plane.

[0026] The yarn break separation and capture method for a ring spinning frame using the above device includes the following steps:

[0027] S1. Yarn suction nozzle positioning: After yarn breakage at the spinning spindle position of the spinning frame, the yarn suction end effector moves to the upper part of the broken yarn bobbin under the drive of the horizontal slider and the vertical slider in the driving base.

[0028] S2. Yarn suction nozzle attitude adjustment: Measure the distances between the upper and lower sides of the yarn suction nozzle and the outer layer of the yarn on the broken yarn bobbin, and the longitudinal swing element in the driving base adjusts the attitude of the yarn suction nozzle to make it parallel to the outer layer of the yarn on the broken yarn bobbin, and the distance between the yarn suction nozzle and the outer layer of the yarn on the broken yarn bobbin meets the required spacing.

[0029] S3. Tracking, separating and capturing the broken yarn at the original spindle position: The broken yarn bobbin is reversely unwound under the drive of the bobbin unwinding device, and then the negative pressure source connected to the yarn suction end effector is turned on. At the same time, the yarn suction end effector moves the yarn suction nozzle along the contour of the outer layer of the yarn on the broken yarn bobbin from top to bottom under the drive of the driving base, and the broken yarn on the outer layer of the yarn on the broken yarn bobbin is captured by negative pressure during this process.

[0030] S4. Broken yarn monitoring: The captured broken yarn enters the suction tube through the yarn suction nozzle under negative pressure traction, and the broken yarn is monitored during the process of passing through the monitoring area;

[0031] S5. Broken yarn clamping: After the broken yarn is detected, it is immediately clamped to complete the separation and capture of the broken yarn;

[0032] S6. When the separation and capture operation of a predetermined number of broken yarns is completed or the set working time is reached, a solenoid valve (not shown) is opened, and compressed air enters the suction tube through the self-cleaning nozzle to purge the monitoring surface of the broken yarn monitoring component, cleaning the broken yarn fibers deposited and attached thereto, thereby realizing self-cleaning of the broken yarn monitoring component.

[0033] Preferably, when the yarn suction nozzle moves downwards along the outer contour of the yarn on the broken yarn bobbin tube in S3, when the proximity switch below the yarn suction nozzle detects that the distance from the balloon ring reaches the set value, obstacle avoidance of the balloon ring is performed. The horizontal slider of the driving base drives the yarn suction end actuator to move laterally to avoid the balloon ring, or the lateral swing element of the driving base drives the yarn suction end actuator to move in the horizontal plane to avoid the balloon ring.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] (1). In the present invention, the broken yarn separation and capture device can separate and capture the yarn along the outer contour of the yarn on the original spindle position broken yarn bobbin tube, and at the same time can actively avoid the moving balloon ring and ring rail; it can realize the separation and capture of the broken yarn at the original broken yarn spindle position after the broken yarn in the ring spinning frame, reducing the complexity of the structure of the automatic splicing device and improving the stability of the broken yarn separation and capture.

[0036] (2). In the present invention, the yarn clamping component can effectively prevent the problem of untwisting after the yarn is captured, and at the same time, the clamping force of the yarn clamping component can be adjusted, which is convenient for the operation of threading the traveller and pulling the yarn in the subsequent automatic splicing process.

[0037] (3). In the present invention, a pneumatic (photoelectric or capacitive can also be used) broken yarn monitoring component is adopted, which can effectively monitor the broken yarn. With the assistance of the self-cleaning component, regular cleaning of the broken yarn monitoring component can be realized, ensuring the stability of the monitoring of the broken yarn monitoring component. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of the broken yarn separation and capture device in Embodiment 1 of the present invention capturing the broken yarn at the upper part of the broken yarn bobbin tube;

[0039] Figure 2 It is a schematic structural diagram of the broken yarn separation and capture device in Embodiment 1 of the present invention capturing the broken yarn at the middle part of the broken yarn bobbin tube;

[0040] Figure 3Schematic diagram of the structure of the broken yarn separation and capture device in Embodiment 1 of the present invention actively avoiding the balloon ring;

[0041] Figure 4 Schematic diagram of the structure of the broken yarn separation and capture device in Embodiment 1 of the present invention capturing the broken yarn at the lower part of the broken yarn bobbin;

[0042] Figure 5 Schematic diagram of the structure of the photoelectric sensor used in Embodiment 2 of the present invention;

[0043] Figure 6 Schematic diagram of the structure of the capacitive sensor used in Embodiment 3 of the present invention;

[0044] Figure 7 Schematic diagram of the structure of the broken yarn separation and capture device in Embodiment 4 of the present invention capturing the broken yarn from the broken yarn bobbin;

[0045] In the figure: 1, broken yarn bobbin; 2, outer layer of the yarn on the broken yarn bobbin; 3, balloon ring; 4, ring rail; 5, driving base; 51, horizontal slideway; 52, horizontal slider; 53, vertical slideway; 54, vertical slider; 55, lateral swing element; 56, connecting rod; 57, longitudinal swing element; 6, yarn suction end effector; 61, yarn suction nozzle; 62, ranging component; 63, yarn clamping component; 64, pneumatic sensor; 65, self-cleaning nozzle; 66, yarn suction pipe; 67, proximity switch; 68, photoelectric sensor; 69, capacitive sensor; 7, temporary storage component for the bobbin. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiment 1:

[0048] Refer to Figure 1-4 , which is a schematic diagram of the structure of the broken yarn separation and capture device for the ring spinning frame in this embodiment.

[0049] Refer to Figure 1 , the broken yarn separation and capture device for the ring spinning frame includes: a yarn suction end effector 6 and a driving base 5.

[0050] The yarn suction end effector 6 is installed on the driving base 5 and is composed of a yarn suction nozzle 61, a ranging component 62, a yarn clamping component 63, a broken yarn monitoring component, a self-cleaning component, a yarn suction pipe 66 and a proximity switch 67.

[0051] In this embodiment, the yarn suction nozzle 61 is trumpet-shaped and is used for separating and sucking broken yarns.

[0052] In this embodiment, for the yarn suction pipe 66, the inner wall thereof should be made of a smooth and wear-resistant material. One end is installed with a trumpet-shaped yarn suction nozzle 61, and the other end is connected to a negative pressure source through a flexible pipe (not shown in the figure).

[0053] In this embodiment, the distance measuring component 62 is symmetrically installed outside the yarn suction pipe 66, near the yarn suction nozzle 61, and is used for measuring the distance between the yarn suction nozzle 61 and the outer layer 2 of the yarn on the broken yarn bobbin, so as to provide parameters for adjusting the angle of the yarn suction pipe 66 and the distance between the yarn suction nozzle 61 and the outer layer 2 of the yarn on the broken yarn bobbin. The distance measuring component 62 can adopt one of ultrasonic sensors, laser sensors, infrared sensors, etc.

[0054] In this embodiment, the yarn clamping component 63 is symmetrically installed on the wall of the yarn suction pipe 66 and can reciprocate relative to the pipe wall, and is used for clamping and releasing the captured yarn, and the clamping force on the yarn can be adjusted.

[0055] Furthermore, the clamping surface of the yarn clamping component 63 in contact with the yarn is made of a wear-resistant material and has a smooth surface.

[0056] Furthermore, the symmetrically installed clamping surfaces of the yarn clamping component 63 are synchronously driven by a cylinder, an electric push rod or a motor.

[0057] In this embodiment, the broken yarn monitoring component is installed on the wall of the yarn suction pipe 66 and is located behind the yarn clamping component 63, and is used for monitoring the captured yarn;

[0058] Furthermore, the broken yarn monitoring component adopts a pneumatic sensor 64.

[0059] In this embodiment, the self-cleaning component includes a self-cleaning nozzle 65. The self-cleaning nozzle 65 is an inclined opening on the wall of the yarn suction pipe 66. The included angle between the self-cleaning nozzle 65 and the central axis of the yarn suction pipe 66 is an acute angle. The nozzle is connected to a compressed air source or a compressed gas storage device (not shown in the figure), and a two-position two-way solenoid valve is used to control the on-off of the compressed air, so as to periodically and intermittently purge the inner wall of the yarn suction pipe 66 and clean the broken yarn whiskers deposited on the surface of the broken yarn monitoring component.

[0060] In this embodiment, the proximity switch 67 is installed below the yarn suction nozzle 61 and is used for monitoring the approach of the balloon ring 3 and the ring rail 4, that is, measuring the distance between the yarn suction nozzle 61 and the balloon ring 3 and the ring rail 4. The proximity switch 67 can adopt one of a photoelectric proximity switch, an inductive proximity switch, a Hall proximity switch or an ultrasonic proximity switch, etc.

[0061] Furthermore, since both the balloon ring 3 and the ring rail 4 are made of metal, it is preferred to adopt a Hall proximity switch as the proximity switch 67.

[0062] In this embodiment, the driving base 5 has two linear degrees of freedom and two rotational degrees of freedom, and is composed of a horizontal slider 52, a horizontal slideway 51, a vertical slider 54, a vertical slideway 53, a lateral swing element 55 and a longitudinal swing element 57.

[0063] Further, the movement in the front-rear direction (i.e., Figure 1 the direction of the Y-axis of the spatial coordinate system shown) is realized by the horizontal slider 52 and the horizontal slideway 51; the movement in the vertical direction (i.e., Figure 1 the direction of the Z-axis of the spatial coordinate system shown) is realized by the vertical slider 54 and the vertical slideway 53; within the horizontal plane (i.e., Figure 1 the XOY coordinate plane of the spatial coordinate system shown) is realized by the lateral swing element 55; the movement in the vertical plane (i.e., Figure 1 the YOZ coordinate plane of the spatial coordinate system shown) is realized by the longitudinal swing element 57.

[0064] Further, the relative movement of the horizontal slider 52, the horizontal slideway 51, the vertical slider 54 and the vertical slideway 53 can be realized by transmission and driving mechanisms such as belts, ball screws or cylinders; the lateral swing element 55 and the longitudinal swing element 57 can be one of driving mechanisms such as pneumatic motors, hydraulic motors or electric motors.

[0065] Further, the initial position of the driving base 5 in the vertical direction (i.e., Figure 1 the direction of the Z-axis of the spatial coordinate system shown) is located above the balloon ring 3 and above the upper part of the broken yarn bobbin 1.

[0066] Refer to Figure 1-4 , and based on the above device, a method for separating and capturing broken yarn for a ring spinning frame is carried out, including the method for separating and capturing broken yarn when the yarn suction end effector 6 is located at the upper, middle and lower parts of the balloon ring 3 and the method for the yarn suction end effector 6 to avoid the balloon ring 3.

[0067] Figure 1 shows a schematic diagram of separating and capturing broken yarn when the yarn suction end effector 6 is located at the upper part of the balloon ring 3. The specific operation steps are as follows:

[0068] ①Positioning and attitude adjustment of the yarn suction nozzle 61: The yarn suction end effector 6 moves to the upper part of the broken yarn bobbin 1 under the drive of the drive base 5. At this time, the two distance sensors of the ranging component 62 on one side of the yarn suction nozzle 61 respectively measure the distances a and b between the yarn suction nozzle 61 and the outer layer 2 of the yarn on the broken yarn bobbin. Let c be the minimum value of a and b. The longitudinal swing element 57 in the drive base 5 adjusts the attitude of the yarn suction nozzle 61 so that a = b = c. At this time, the yarn suction nozzle 61 is parallel to the outer layer 2 of the yarn on the broken yarn bobbin; the target distance between the yarn suction nozzle 61 and the outer layer 2 of the yarn on the broken yarn bobbin is d (this value is adjustable). The horizontal slider 52 in the drive base 5 drives the yarn suction nozzle 61 to move so that c = d. At this time, the yarn suction nozzle 61 is parallel to the outer layer 2 of the yarn on the broken yarn bobbin and the distance between them is (a + b) / 2 = d.

[0069] ②Tracking and separating the broken yarn at the original spindle position: The yarn suction nozzle 61 moves along the path shown by T1 to separate and capture the yarn. At the same time, the negative pressure source connected to the yarn suction pipe 66 is turned on (not shown in the figure), and the broken yarn on the outer layer 2 of the yarn on the broken yarn bobbin is captured by negative pressure.

[0070] ③Broken yarn monitoring: The broken yarn enters the yarn suction pipe 66 from the yarn suction nozzle 61. During the process of the yarn passing through the monitoring area of the pneumatic sensor 64, the air pressure change in the yarn suction pipe 66 reaches the detection value, that is, the yarn is detected.

[0071] ④Broken yarn clamping: The yarn clamping component 63 immediately clamps the yarn to complete the separation and capture of the broken yarn. If no broken yarn is captured at this position (i.e., the upper part of the broken yarn bobbin 1 shown), the operations shown in Figure 1 are carried out. Figure 2 and Figure 3 are shown.

[0072] Figure 2 and Figure 3 show a schematic diagram of the broken yarn separation and capture device avoiding the balloon ring 3. As shown in Figure 2 , when the proximity switch 67 below the yarn suction nozzle 61 monitors that the distance from the balloon ring 3 reaches the set value, the yarn suction end effector 6 performs the steps shown in Figure 3 .

[0073] ⑤Avoiding the balloon ring 3: Figure 3 shows the first method of avoiding the balloon ring 3, that is, the horizontal slider 52 of the drive base 5 drives the yarn suction end effector 6 to move backward a certain distance to avoid the balloon ring 3. At the same time, the vertical slider 54 of the drive base 5 drives the yarn suction end effector 6 to continue to move downward.

[0074] Figure 3 The second method of avoiding the balloon ring 3 not shown in Figure 1shown in the XOY plane) swings a certain angle R1 in the clockwise or counterclockwise direction to avoid the balloon ring 3. Subsequently, the vertical slider 54 of the driving base 5 drives the yarn suction end actuator 6 to continue moving downward. If the broken yarn is not captured at this position, the Figure 4 operations shown are performed.

[0075] Figure 4 shows a schematic diagram of separating and capturing a broken yarn when the yarn suction end actuator 6 is located below the balloon ring 3. The method of separating and capturing a broken yarn is the same as that of Figure 1 , Figure 2 the steps ①②③④ shown.

[0076] As Figures 1 to 4 shown, after the yarn suction end actuator 6 completes a certain number of broken yarn separation and capture operations or reaches the set working time, a two-position two-way solenoid valve (not shown in the figure) is turned on, and compressed air P1 enters the inside of the yarn suction tube 66 through the self-cleaning nozzle 65 to purge the pneumatic pressure sensor 64 and clean the broken yarn filaments deposited and attached thereto, ensuring the stability of broken yarn monitoring.

[0077] Embodiment 2:

[0078] Figure 5 shows a schematic diagram of the photoelectric broken yarn monitoring scheme of the second embodiment of the present invention. The difference from Embodiment 1 is that in this embodiment, the broken yarn monitoring component uses a photoelectric sensor 68.

[0079] The broken yarn monitoring component is replaced from pneumatic to photoelectric, and its monitoring principle is different. When the broken yarn filament passes through the light emitting end and the light receiving end of the photoelectric sensor 68, the light intensity of the light L4 will be completely blocked or partially weakened, and then the broken yarn is monitored; in addition, the method of separating and capturing the broken yarn in this embodiment is the same as that in Embodiment 1.

[0080] Embodiment 3:

[0081] Figure 6 shows a schematic diagram of the capacitive broken yarn monitoring scheme of the third embodiment of the present invention. The difference from Embodiments 1 and 2 is that in this embodiment, the broken yarn monitoring component uses a capacitive sensor 69.

[0082] The broken yarn monitoring component is replaced from pneumatic or photoelectric to capacitive, and its monitoring principle is different. When the broken yarn filament passes through the two electrodes of the capacitive sensor 69, the dielectric constant between the electrodes will be changed, causing the capacitance to change, and then the broken yarn is monitored; in addition, the method of separating and capturing the broken yarn in this embodiment is the same as that in Embodiment 1.

[0083] Embodiment 4:

[0084] Figure 7The 4th embodiment of the present invention is shown. The difference from Embodiments 1, 2, and 3 is that in this embodiment, the broken yarn bobbin 1 is pulled out from the original broken yarn spindle position and then transported to the bobbin temporary storage component 7, and then the broken yarn is separated and captured.

[0085] In this embodiment, first, after the yarn breaks, the broken yarn bobbin 1 is pulled out from the spinning spindle position of the spinning frame by a broken yarn bobbin handling device (not shown in the figure) and transported to the bobbin temporary storage component 7. Subsequently, the suction yarn end effector 6 is positioned above the broken yarn bobbin 1, and the broken yarn is separated and captured from top to bottom along the movement path T2. The operation method is the same as that of Figure 1 and Figure 2 and Figure 4 the steps ①②③④ in Embodiment 1 shown.

[0086] As mentioned above, it is only used to help understand the method of the present invention and its core idea. However, the protection scope of the present invention is not limited thereto. For those of ordinary skill in the art in the technical field of the present invention, any equivalent replacement or change made according to the technical solution of the present invention and its inventive concept within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. Yarn break separation and capture device for ring spinning frame, including a yarn suction end effector (6), characterized in that, It further includes a driving base (5), and the yarn suction end effector (6) is installed on the driving base (5); The yarn suction end effector (6) includes a yarn suction nozzle (61), a yarn clamping component (63), a broken yarn monitoring component, a self-cleaning component, a yarn suction pipe (66) and a proximity switch (67); The yarn suction nozzle (61) is connected to one end of the yarn suction pipe (66) close to the broken yarn bobbin (1), and the other end of the yarn suction pipe (66) is connected to a negative pressure source. The yarn suction nozzle (61) is used for negative pressure suction separation of broken yarns; The yarn clamping component (63) is symmetrically connected to the wall of the yarn suction pipe (66) and is located behind the yarn suction nozzle (61) for clamping or releasing the captured broken yarn; The broken yarn monitoring component is connected to the wall of the yarn suction pipe (66) and is located behind the yarn clamping component (63) for monitoring whether there is a captured broken yarn; The self-cleaning component is connected to the wall of the yarn suction pipe (66) and is located between the yarn clamping component (63) and the broken yarn monitoring component for jetting and cleaning the part of the wall of the yarn suction pipe (66) where the broken yarn monitoring component is located; The proximity switch (67) is connected to the lower part of the yarn suction nozzle (61) for measuring the distances between the yarn suction nozzle (61) and the balloon ring (3) and the ring rail (4).

2. The yarn break separation and capture device for a ring spinning frame according to claim 1, wherein, The yarn suction end effector (6) further includes a ranging component (62). The ranging component (62) is symmetrically connected to the upper and lower sides outside the yarn suction pipe (66) and is located between the yarn suction nozzle (61) and the yarn clamping component (63) for measuring the distances between the upper and lower sides of the yarn suction nozzle (61) and the outer layer of the yarn on the broken yarn bobbin (2).

3. The yarn breakage separation and capture device for a ring spinning frame according to claim 2, wherein, The ranging component (62) adopts an ultrasonic sensor, a laser sensor or an infrared sensor.

4. The yarn break separation and capture device for a ring spinning frame according to claim 3, characterized in that, The yarn clamping component (63) includes two clamping surfaces symmetrically arranged along the central axis of the yarn suction pipe (66). The opposite surfaces of the two clamping surfaces are smooth surfaces, and the opposite surfaces of the two clamping surfaces are both connected to a driving source for synchronous driving. The driving source is a cylinder, an electric push rod or a motor.

5. The yarn breakage separation and capture device for a ring spinning frame according to claim 3, characterized in that, The broken yarn monitoring component adopts a photoelectric sensor (68), a capacitive sensor (69) or a pneumatic sensor (64).

6. The yarn break separation and capture device for a ring spinning frame according to claim 3, characterized in that, The self-cleaning component includes a self-cleaning nozzle (65). The self-cleaning nozzle (65) is an inclined opening on the wall of the yarn suction pipe (66), and the bottom end of the inclined opening faces the broken yarn monitoring component. The self-cleaning nozzle (65) is connected to a compressed gas storage device, and a solenoid valve is installed on the self-cleaning nozzle (65) for controlling the on-off of the compressed gas.

7. The yarn breakage separation and capture device for a ring spinning frame according to claim 3, characterized in that, The proximity switch (67) adopts a photoelectric proximity switch, an inductive proximity switch, a Hall proximity switch or an ultrasonic proximity switch.

8. The yarn breakage separation and capture device for a ring spinning frame according to any one of claims 3-7, characterized in that, The driving base (5) includes a horizontal slider (52), a horizontal slideway (51), a vertical slider (54), a vertical slideway (53), a lateral swing element (55) and a longitudinal swing element (57); The horizontal slider (52) is horizontally slidably connected to the horizontal slideway (51), and the horizontal slider (52) is used to drive the yarn suction end effector (6) to move horizontally; The vertical slider (54) is vertically and slidably connected to the vertical slideway (53). The vertical slideway (53) is vertically connected to the horizontal slider (52). The vertical slider (54) is used to drive the yarn suction end actuator (6) to move vertically. The lateral swing element (55) is connected to the vertical slider (54). The lateral swing element (55) is used to control the movement of the yarn suction end actuator (6) in the horizontal plane. Above the longitudinal swing element (57), it is connected to the lateral swing element (55) through a connecting rod (56). Below the longitudinal swing element (57), it is connected above the yarn suction tube (66) and is located behind the yarn break monitoring component, and is used to control the movement of the yarn suction end actuator (6) in the vertical plane.

9. The yarn break separation and capture method for a ring spinning frame using the device according to claim 8, characterized in that, It includes the following steps: S1. Positioning of the yarn suction nozzle (61): The yarn suction end actuator (6) moves to the upper part of the yarn break bobbin (1) under the drive of the drive base (5). S2. Attitude adjustment of the yarn suction nozzle (61): Measure the distances between the upper and lower sides of the yarn suction nozzle (61) and the outer layer of the yarn on the yarn break bobbin (2). The drive base (5) adjusts the attitude of the yarn suction nozzle (61) to make it parallel to the outer layer of the yarn on the yarn break bobbin (2), and the distance between the yarn suction nozzle (61) and the outer layer of the yarn on the yarn break bobbin (2) meets the required spacing. S3. Tracking and separating the yarn break at the original spindle position: The yarn break bobbin (1) rotates reversely and unwinds under the drive of the bobbin unwinding device. The yarn suction nozzle (61) moves from top to bottom along the contour of the outer layer of the yarn on the yarn break bobbin (2), and at the same time, the yarn break on the outer layer of the yarn on the yarn break bobbin (2) is captured by negative pressure during this process. S4. Yarn break monitoring: The yarn break enters the yarn suction tube (66), and the yarn break is monitored during the process of the yarn break passing through the monitoring area. S5. Yarn break clamping: After the yarn break is monitored, the yarn break is clamped immediately to complete the separation and capture of the yarn break.

10. The yarn break separation and capture method for a ring spinning frame according to claim 9, characterized in that, When the yarn suction nozzle (61) moves from top to bottom along the contour of the outer layer of the yarn on the yarn break bobbin (2) in S3, when the proximity switch (67) below the yarn suction nozzle (61) monitors that the distance from the balloon ring (3) reaches the set value, active avoidance of the balloon ring (3) is performed. The horizontal slider (52) of the drive base (5) drives the yarn suction end actuator (6) to move laterally to avoid the balloon ring (3), or the lateral swing element (55) of the drive base (5) drives the yarn suction end actuator (6) to move in the horizontal plane to avoid the balloon ring (3).

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