Device for detecting shedding of spinning heads of spinning cakes

Abstract

The utility model relates to a device for detecting falling of a spinning cake spinning head. The device comprises an air blowing device, a grating detection device and a PLC (Programmable Logic Controller), the spinning cake is positioned between the blowing device and the grating detection device; the grating detection device comprises a grating transmitter and a grating receiver; the blowing device is used for generating airflow to blow to the spinning cake, and if a spinning head of the spinning cake falls off, the spinning head can be blown to the space between the grating emitter and the grating receiver; the grating receiver is electrically connected with the PLC, and if a screw head exists between the grating emitter and the grating receiver, the grating receiver sends a signal to the PLC. According to the detection device for the falling of the spinning cake spinning head, the falling condition of the spinning head is automatically identified through the grating detection device, the detection is convenient and rapid, and equipment damage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial yarns and relates to a detection device for the shedding of the yarn end of a yarn cake. Background Art

[0002] The literature (Logistics Planning and Its Control Implementation of Polyester Filament Automatic Packaging Line System [D], Beijing Institute of Mechanical Industry Automation) records that with the progress of technology, the whole-process automatic inspection and packaging operation of chemical fiber yarn rolls, including automatic weighing, automatic external inspection, and automatic packaging, has been realized. The whole-process automatic inspection and packaging not only improves the external inspection efficiency and packaging efficiency but also effectively alleviates the labor pressure of enterprises. However, since the automatic inspection and packaging require the yarn cake to be placed on a tray and then run on a roller track with the tray, and can be palletized into the final yarn package only after passing through automatic external inspection and automatic film wrapping (bagging), the yarn end of the yarn cake may fall off due to the vibration of the yarn cake during operation. When passing through the inside of the automatic external inspection machine and the automatic film wrapping machine, it will entangle the equipment.

[0003] Civil yarn tow is relatively thin and has low strength. The maximum strength of a single yarn tow is below 4.0 cN / dtex, that is, the maximum strength of a single yarn is about 10 N. The shedding and entanglement of the yarn end on the equipment will not cause too much impact on the equipment.

[0004] Industrial filament yarn is thicker and stronger than civil yarn. Industrial filament yarn is as thin as a few hundred decitex, as thick as tens of thousands of decitex, and commonly several thousand decitex. The maximum strength of a single yarn tow is above 9.0 cN / dtex, that is, the strength of a single yarn tow is at least 100 N and at most several hundred or even thousands of N. Moreover, the thicker the yarn, the greater the difficulty of firmly knotting the yarn end of the yarn cake, and the greater the probability of the yarn end falling off due to the vibration of the yarn cake. Once the fallen-off yarn end is not detected and processed in time, when the yarn cake with the fallen-off yarn end enters the inside of the running automatic external inspection machine and the film wrapping machine, it will entangle the components of the equipment. Also, due to the high strength of industrial filament yarn, the continued transportation of the yarn cake will pull the components of the equipment, causing damage to the equipment. In the face of the above problems, the existing technologies all rely on people to observe and find the yarn end, but sometimes it is not timely, resulting in the yarn cake with the fallen-off yarn end entering the inside of the equipment.

[0005] Therefore, it is of great significance to research a detection device for the shedding of the yarn end of a yarn cake to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the problems existing in the prior art and provide a detection device for the shedding of the yarn end of a yarn cake.

[0007] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0008] A detection device for the shedding of the yarn end of a yarn cake includes a blowing device, a grating detection device, and a PLC controller;

[0009] The cake is located between the blowing device and the grating detection device;

[0010] The grating detection device includes a grating emitter and a grating receiver;

[0011] The blowing device is used to generate an air flow to blow towards the cake. If the filament head of the cake falls off, the filament head will be blown between the grating emitter and the grating receiver;

[0012] The grating receiver is electrically connected to the PLC controller. If there is a filament head between the grating emitter and the grating receiver, the grating receiver sends a signal to the PLC controller;

[0013] The principle of the grating detection device is as follows: The infrared light emitted by the grating emitter directly hits the grating receiver. If a filament head falls off, the filament head will block a part of the infrared rays, making the infrared rays received by the grating receiver incomplete, thereby identifying the falling off of the filament head. The grating receiver sends the identified information to the PLC controller.

[0014] As a preferred technical solution:

[0015] For a detection device for the falling off of the filament head of a cake as described above, the detection device for the falling off of the filament head of a cake is used to detect whether there is a filament head falling off before inspection or packaging of the cake on an automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine.

[0016] For a detection device for the falling off of the filament head of a cake as described above, the automatic packaging production line includes a conveyor line and a tray;

[0017] The conveyor line includes a conveyor line side fixing plate I, a conveyor line side fixing plate II, a motor, and rollers; The conveyor line side fixing plate I and the conveyor line side fixing plate II are parallel to each other; The number of rollers is multiple and they are parallel to each other. The rollers are arranged between the side fixing plate I and the conveyor line side fixing plate II; The rollers are started by the motor;

[0018] The tray includes tray columns and a tray base; The tray columns are fixed on the tray base. The cake is placed on the tray columns through a filament cylinder; The central axis of the cake coincides with the central axis of the tray columns, and the radius of the cake is greater than the radius of the tray columns (the cake is a cylindrical structure obtained by winding filaments on a filament cylinder);

[0019] The tray base is placed on the rollers of the conveyor line. The rollers of the conveyor line are used to transport the cake through the automatic external inspection machine and the automatic film wrapping machine on the automatic packaging production line in sequence.

[0020] For a detection device for the falling off of the filament head of a cake as described above, the detection device for the falling off of the filament head of a cake further includes a reflective photoelectric sensor;

[0021] The reflective photoelectric sensor includes a transmitter and a receiver; the difference between the reflective photoelectric sensor and the grating detection device lies only in the size, and the principle is the same;

[0022] The grating transmitter, the transmitter, and the blowing device are fixed on the conveyor line side fixing plate I and are located at the position where the cake has not reached the automatic external inspection machine; the transmitter is located between the grating transmitter and the blowing device; the grating receiver and the receiver are fixed on the conveyor line side fixing plate II; the connection line between the grating transmitter and the grating receiver is perpendicular to the transportation direction of the conveyor line, and the connection line between the transmitter and the receiver is perpendicular to the transportation direction of the conveyor line;

[0023] The distance between the grating transmitter and the transmitter is the sum of the radius of the cake and the radius of the tray column;

[0024] The moving direction of the air flow generated by the blowing device forms an angle of 15° - 45° with the side fixing plate I, and the moving direction of the air flow is towards the grating receiver;

[0025] The receiver and the blowing device are respectively electrically connected to the PLC controller. The reflective photoelectric sensor is used to detect whether the tray column reaches between the transmitter and the receiver. When the reflective photoelectric sensor detects the tray column, the receiver sends a signal to the PLC controller, and the PLC controller controls the blowing device to generate an air flow to blow towards the cake. If the filament head of the cake falls off, the filament head will be blown by the air flow between the grating transmitter and the grating receiver;

[0026] When the reflective photoelectric sensor detects the tray column, at this time the cake has just left the detection area of the grating detection device. When there is a filament head falling off, the filament head is blown by the air flow between the grating transmitter and the grating receiver. At this time, the grating detection device will detect again that there is an object between the grating transmitter and the grating receiver, and this object is the filament head;

[0027] The reason for setting the grating transmitter, the transmitter, and the blowing device at the position where the cake has not passed through the automatic external inspection machine is to detect whether there is a filament head falling off of the cake on the automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine before inspection.

[0028] For a filament head falling-off detection device of a cake as described above, the filament head falling-off detection device of the cake further includes a stopper and a release button;

[0029] The stopper is located between the blowing device and the automatic external inspection machine;

[0030] The PLC controller is respectively electrically connected to the motor and the stopper; when the PLC controller receives the signal sent by the grating receiver, the PLC controller controls the motor to stop moving and starts the stopper;

[0031] Although the motor has been braked, due to inertia, the tray will not stop immediately, so it is necessary to raise the stopper to make it stop completely;

[0032] The release button is electrically connected to the PLC controller. After the release button is pressed, the PLC controller receives the information sent by the release button, closes the stopper, and starts the motor, enabling the automatic packaging production to run again.

[0033] For a detection device for the shedding of the end of a silk cake as described above, along the transportation direction of the conveyor line, the distance between the blowing device and the automatic external inspection machine is 1 - 1.5 m.

[0034] For a detection device for the shedding of the end of a silk cake as described above, the detection device for the shedding of the end of the silk cake further includes a reflective photoelectric sensor;

[0035] The reflective photoelectric sensor includes a transmitter and a receiver; the difference between the reflective photoelectric sensor and the grating detection device lies only in the size, and the principle is the same;

[0036] The grating transmitter, the transmitter, and the blowing device are fixed on the side fixing plate I of the conveyor line and are located at the position where the silk cake has passed the automatic external inspection machine but has not reached the automatic film wrapping machine; the transmitter is located between the grating transmitter and the blowing device; the grating receiver and the receiver are fixed on the side fixing plate II of the conveyor line; the connection line between the grating transmitter and the grating receiver is perpendicular to the transportation direction of the conveyor line, and the connection line between the transmitter and the receiver is perpendicular to the transportation direction of the conveyor line;

[0037] The distance between the grating transmitter and the transmitter is the sum of the radius of the silk cake and the radius of the tray column;

[0038] The included angle between the movement direction of the airflow generated by the blowing device and the side fixing plate I is 15° - 45°, and the movement direction of the airflow is towards the grating receiver;

[0039] The receiver and the blowing device are respectively electrically connected to the PLC controller. The reflective photoelectric sensor is used to detect whether the tray column reaches between the transmitter and the receiver. When the reflective photoelectric sensor detects the tray column, the receiver sends a signal to the PLC controller, and the PLC controller controls the blowing device to generate an airflow to blow towards the silk cake. If the end of the silk cake falls off, the end is blown by the airflow between the grating transmitter and the grating receiver;

[0040] When the reflective photoelectric sensor detects the tray column, at this time the silk cake has just left the detection area of the grating detection device. When there is an end shedding, the end is blown by the airflow between the grating transmitter and the grating receiver. At this time, the grating detection device will detect again that there is an object between the grating transmitter and the grating receiver, and this object is the end;

[0041] The raster emitter, emitter, and blowing device are set at the position where the cake has not passed through the automatic film wrapping machine to detect whether the cake on the automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine has a broken filament head before packaging.

[0042] As described above, a device for detecting the broken filament head of a cake, the device for detecting the broken filament head of a cake further includes a stopper and a release button;

[0043] The stopper is located between the blowing device and the automatic external inspection machine;

[0044] The PLC controller is electrically connected to the motor and the stopper respectively; when the PLC controller receives the signal sent by the raster receiver, the PLC controller controls the motor to stop moving and activates the stopper;

[0045] Although the motor has been braked, due to inertia, the tray will not stop immediately, so the stopper needs to be raised to make it stop completely;

[0046] The release button is electrically connected to the PLC controller. When the release button is pressed, the PLC controller receives the information sent by the release button, closes the stopper, and starts the motor, so that the automatic packaging production runs again.

[0047] As described above, a device for detecting the broken filament head of a cake, along the transportation direction of the conveyor line, the distance between the blowing device and the automatic film wrapping machine is 1 to 1.5 meters.

[0048] Beneficial effects:

[0049] The device for detecting the broken filament head of a cake of the present utility model automatically identifies the situation of broken filament heads through the raster detection device, which is convenient and rapid for detection and avoids equipment damage. Description of the Drawings

[0050] Figure 1 It is a top view when the device for detecting the broken filament head of a cake is in use;

[0051] Figure 2 It is a front view when the device for detecting the broken filament head of a cake is in use;

[0052] Among them, 1 - blowing device, 2 - raster emitter, 3 - raster receiver, 4 - conveyor line side fixing plate I, 5 - conveyor line side fixing plate II, 6 - roller, 7 - emitter, 8 - receiver, 9 - tray column, 10 - tray base, 11 - cake, 12 - release button, 13 - stopper, 14 - filament head; Detailed Embodiment

[0053] The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0054] Embodiment 1

[0055] A detection device for the shedding of the end of a silk cake, as Figures 1 to 2 shown, includes a blowing device 1, a grating detection device, a PLC controller, a reflective photoelectric sensor, a stopper 13 and a release button 12;

[0056] The detection device for the shedding of the end of a silk cake is used to detect whether the end 14 of the silk cake 11 on an automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine falls off before inspection;

[0057] The automatic packaging production line includes a conveyor line and a tray;

[0058] The conveyor line includes a conveyor line side fixing plate I 4, a conveyor line side fixing plate II 5, a motor and a roller 6; the conveyor line side fixing plate I 4 and the conveyor line side fixing plate II 5 are parallel to each other; the number of rollers 6 is multiple and they are parallel to each other, and the rollers 6 are arranged between the conveyor line side fixing plate I 4 and the conveyor line side fixing plate II 5; the rollers 6 are started by the motor;

[0059] The tray includes a tray column 9 and a tray base 10; the tray column 9 is fixed on the tray base 10, and the silk cake 11 is placed on the tray column through a silk tube; the central axis of the silk cake 11 coincides with the central axis of the tray column, and the radius of the silk cake 11 is greater than the radius of the tray column 9;

[0060] The tray base 10 is placed on the roller 6 of the conveyor line, and the roller 6 of the conveyor line is used to transport the silk cake 11 through the automatic external inspection machine and the automatic film wrapping machine on the automatic packaging production line in sequence;

[0061] The reflective photoelectric sensor includes a transmitter 7 and a receiver 8; the grating detection device includes a grating transmitter 2 and a grating receiver 3;

[0062] The grating transmitter 2, the transmitter 7 and the blowing device 1 are fixed on the conveyor line side fixing plate I 4 and are located at the position where the silk cake 11 has not reached the automatic external inspection machine; the transmitter 7 is located between the grating transmitter 2 and the blowing device 1; the grating receiver 3 and the receiver 8 are fixed on the conveyor line side fixing plate II 5; the connection line between the grating transmitter 2 and the grating receiver 3 is perpendicular to the transportation direction of the conveyor line, and the connection line between the transmitter 7 and the receiver 8 is perpendicular to the transportation direction of the conveyor line;

[0063] Along the transportation direction of the conveyor line, the distance between the air blowing device 1 and the automatic external inspection machine is 1 to 1.5 m;

[0064] The distance between the grating emitter 2 and the emitter 7 is the sum of the radius of the bobbin 11 and the radius of the tray column 9;

[0065] The included angle between the movement direction of the air flow generated by the air blowing device 1 and the side fixing plate I 4 of the conveyor line is 15° to 45°, and the movement direction of the air flow is towards the grating receiver 3;

[0066] The receiver 8 and the air blowing device 1 are electrically connected to the PLC controller respectively. The reflective photoelectric sensor is used to detect whether the tray column 9 reaches between the emitter 7 and the receiver 8. When the reflective photoelectric sensor detects the tray column 9, the receiver 8 sends a signal to the PLC controller, and the PLC controller controls the air blowing device 1 to generate an air flow to blow towards the bobbin 11. If the filament end of the bobbin falls off, the filament end 14 is blown by the air flow between the grating emitter 2 and the grating receiver 3; the grating receiver 3 is electrically connected to the PLC controller. If there is a filament end between the grating emitter 2 and the grating receiver 3, the grating receiver 3 sends a signal to the PLC controller;

[0067] The stopper 13 is located between the air blowing device 1 and the automatic external inspection machine;

[0068] The PLC controller is electrically connected to the motor and the stopper 13 respectively; when the PLC controller receives the signal sent by the grating receiver 3, the PLC controller controls the motor to stop moving and starts the stopper 13;

[0069] The release button 12 is electrically connected to the PLC controller. After the release button 12 is pressed, the PLC controller receives the information sent by the release button 12, closes the stopper 13, and starts the motor.

[0070] Specific usage process: Start the motor, and the bobbin 11 is transported on the automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine; when the reflective photoelectric sensor detects the tray column 9, at this time the bobbin 11 just leaves the detection area of the grating detection device. When there is a filament end 14 falling off, the filament end 14 is blown by the air flow between the grating emitter 2 and the grating receiver 3. At this time, the grating detection device will detect again that there is an object between the grating emitter 2 and the grating receiver 3, and this object is the filament end 14, so as to realize the detection of the filament end falling off of the bobbin in front of the automatic external inspection machine. When the filament end is detected to fall off, the motor stops running, the stopper 13 rises, the staff ties the filament end 14 well, presses the release button 12, the stopper 13 descends, and the motor moves.

[0071] Embodiment 2

[0072] A detection device for the filament end falling off of a bobbin, as Figures 1 to 2As shown, it includes a blowing device 1, a grating detection device, a PLC controller, a reflective photoelectric sensor, a stopper 13, and a release button 12;

[0073] The detection device for the shedding of the end of the silk cake is used to detect whether there is any shedding of the end 14 of the silk cake 11 before packaging on an automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine;

[0074] The automatic packaging production line includes a conveyor line and a tray;

[0075] The conveyor line includes a conveyor line side fixing plate I 4, a conveyor line side fixing plate II 5, a motor, and rollers 6; the conveyor line side fixing plate I 4 and the conveyor line side fixing plate II 5 are parallel to each other; the number of rollers 6 is multiple and they are parallel to each other, and the rollers 6 are arranged between the conveyor line side fixing plate I 4 and the conveyor line side fixing plate II 5; the rollers 6 are started by the motor;

[0076] The tray includes tray columns 9 and a tray base 10; the tray columns 9 are fixed on the tray base 10, and the silk cake 11 is placed on the tray columns through a silk tube; the central axis of the silk cake 11 coincides with the central axis of the tray columns, and the radius of the silk cake 11 is greater than the radius of the tray columns 9;

[0077] The tray base 10 is placed on the rollers 6 of the conveyor line, and the rollers 6 of the conveyor line are used to transport the silk cake 11 in sequence through the automatic external inspection machine and the automatic film wrapping machine on the automatic packaging production line;

[0078] The reflective photoelectric sensor includes a transmitter 7 and a receiver 8; the grating detection device includes a grating transmitter 2 and a grating receiver 3;

[0079] The grating transmitter 2, the transmitter 7, and the blowing device 1 are fixed on the conveyor line side fixing plate I 4 and are located at the position where the silk cake 11 has passed through the automatic external inspection machine but has not reached the automatic film wrapping machine; the transmitter 7 is located between the grating transmitter 2 and the blowing device 1; the grating receiver 3 and the receiver 8 are fixed on the conveyor line side fixing plate II 5; the connection line between the grating transmitter 2 and the grating receiver 3 is perpendicular to the transportation direction of the conveyor line, and the connection line between the transmitter 7 and the receiver 8 is perpendicular to the transportation direction of the conveyor line;

[0080] Along the transportation direction of the conveyor line, the distance between the blowing device 1 and the automatic film wrapping machine is 1 - 1.5 m;

[0081] The distance between the grating transmitter 2 and the transmitter 7 is the sum of the radius of the silk cake 11 and the radius of the tray columns 9;

[0082] The included angle between the moving direction of the air flow generated by the blowing device 1 and the conveyor line side fixing plate I 4 is 15° - 45°, and the moving direction of the air flow is towards the grating receiver 3;

[0083] The receiver 8 and the blowing device 1 are electrically connected to the PLC controller respectively. The reflective photoelectric sensor is used to detect whether the tray column 9 reaches between the transmitter 7 and the receiver 8. When the reflective photoelectric sensor detects the tray column 9, the receiver 8 sends a signal to the PLC controller, and the PLC controller controls the blowing device 1 to generate an air flow to blow towards the cake 11. If the filament head of the cake falls off, the filament head 14 is blown by the air flow between the grating transmitter 2 and the grating receiver 3. The grating receiver 3 is electrically connected to the PLC controller. If there is a filament head between the grating transmitter 2 and the grating receiver 3, the grating receiver 3 sends a signal to the PLC controller.

[0084] The stopper 13 is located between the blowing device 1 and the automatic film wrapping machine.

[0085] The PLC controller is electrically connected to the motor and the stopper 13 respectively. When the PLC controller receives the signal sent by the grating detection device, the PLC controller controls the motor to stop running and activates the stopper 13.

[0086] The release button 12 is electrically connected to the PLC controller. After the release button 12 is pressed, the PLC controller receives the information sent by the release button 12, closes the stopper 13, and starts the motor.

[0087] Specific usage process: Start the motor, and the cake 11 is transported on the automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine. When the reflective photoelectric sensor detects the tray column 9, at this time the cake 11 just leaves the detection area of the grating detection device. When there is a filament head 14 falling off, the filament head 14 is blown by the air flow between the grating transmitter 2 and the grating receiver 3. At this time, the grating detection device will detect again that there is an object between the grating transmitter 2 and the grating receiver 3, and this object is the filament head 14, so as to realize the detection of the filament head falling off of the cake in front of the automatic film wrapping machine. When the filament head falling off is detected, the motor stops running, the stopper 13 rises, the staff ties the filament head 14 well, presses the release button 12, the stopper 13 descends, and the motor moves.

Claims

1. A detecting device for the shedding of the end of a silk cake, characterized in that, It includes a blowing device, a grating detection device and a PLC controller; The cake is located between the blowing device and the grating detection device; The grating detection device includes a grating emitter and a grating receiver; The blowing device is used to generate an air flow to blow towards the cake. If the filament end of the cake falls off, the filament end will be blown between the grating emitter and the grating receiver; The grating receiver is electrically connected to the PLC controller. If there is a filament end between the grating emitter and the grating receiver, the grating receiver sends a signal to the PLC controller.

2. The detecting device for the breaking-off of the yarn end of a yarn cake according to claim 1, wherein, The detection device for filament end detachment of the cake is used to detect whether there is filament end detachment of the cake on the automatic packaging production line equipped with an automatic external inspection machine and an automatic film wrapping machine before inspection or packaging.

3. The detecting device for the shedding of the yarn end of a yarn cake according to claim 2, characterized in that The automatic packaging production line includes a conveyor line and a tray; The conveyor line includes a conveyor line side fixing plate I, a conveyor line side fixing plate II, a motor and rollers; the conveyor line side fixing plate I and the conveyor line side fixing plate II are parallel to each other; the number of rollers is multiple and they are parallel to each other, and the rollers are arranged between the conveyor line side fixing plate I and the conveyor line side fixing plate II; the rollers are started by the motor; The tray includes tray columns and a tray base; the tray columns are fixed on the tray base, and the cake is placed on the tray columns through a filament cylinder; the central axis of the cake coincides with the central axis of the tray column, and the radius of the cake is greater than the radius of the tray column; The tray base is placed on the rollers of the conveyor line, and the rollers of the conveyor line are used to transport the cake to pass through the automatic external inspection machine and the automatic film wrapping machine on the automatic packaging production line in sequence.

4. The detecting device for the shedding of the yarn end of a yarn cake according to claim 3, wherein, The detection device for filament end detachment of the cake further includes a reflective photoelectric sensor; The reflective photoelectric sensor includes a transmitter and a receiver; The grating emitter, the transmitter and the blowing device are fixed on the conveyor line side fixing plate I and are located at the position where the cake has not reached the automatic external inspection machine; the transmitter is located between the grating emitter and the blowing device; the grating receiver and the receiver are fixed on the conveyor line side fixing plate II; the connection line between the grating emitter and the grating receiver is perpendicular to the transportation direction of the conveyor line, and the connection line between the transmitter and the receiver is perpendicular to the transportation direction of the conveyor line; The distance between the grating emitter and the transmitter is the sum of the radius of the cake and the radius of the tray column; The movement direction of the air flow generated by the blowing device forms an angle of 15° to 45° with the conveyor line side fixing plate I, and the movement direction of the air flow is towards the grating receiver; The receiver and the blowing device are respectively electrically connected to the PLC controller. The reflective photoelectric sensor is used to detect whether the tray column reaches between the transmitter and the receiver. When the reflective photoelectric sensor detects the tray column, the receiver sends a signal to the PLC controller, and the PLC controller controls the blowing device to generate an air flow to blow towards the cake. If the filament end of the cake falls off, the filament end is blown between the grating emitter and the grating receiver by the air flow.

5. The detecting device for the shedding of the yarn end of a yarn cake according to claim 4, characterized in that, The detection device for filament end detachment of the cake further includes a stopper and a release button; The stopper is located between the blowing device and the automatic external inspection machine; The PLC controller is respectively electrically connected to the motor and the stopper; when the PLC controller receives the signal sent by the grating receiver, the PLC controller controls the motor to stop moving and starts the stopper; The release button is electrically connected to the PLC controller. After the release button is pressed, the PLC controller receives the information sent by the release button, closes the stopper, and starts the motor.

6. The detection device for the shedding of the yarn end of a yarn cake according to claim 5, characterized in that, Along the transportation direction of the conveyor line, the distance between the blowing device and the automatic external inspection machine is 1 - 1.5 m.

7. The detecting device for the shedding of the end of a cake of yarn according to claim 3, characterized in that, The detection device for the shedding of the filament end of the bobbin also includes a reflective photoelectric sensor; The reflective photoelectric sensor includes a transmitter and a receiver; The grating transmitter, the transmitter, and the blowing device are fixed on the side fixing plate I of the conveyor line and are located at the position where the bobbin has passed through the automatic external inspection machine but has not reached the automatic film wrapping machine; the transmitter is located between the grating transmitter and the blowing device; the grating receiver and the receiver are fixed on the side fixing plate II of the conveyor line; the connection line between the grating transmitter and the grating receiver is perpendicular to the transportation direction of the conveyor line, and the connection line between the transmitter and the receiver is perpendicular to the transportation direction of the conveyor line; The distance between the grating transmitter and the transmitter is the sum of the radius of the bobbin and the radius of the tray column; The moving direction of the air flow generated by the blowing device forms an angle of 15° - 45° with the side fixing plate I of the conveyor line, and the moving direction of the air flow is towards the grating receiver; The receiver and the blowing device are respectively electrically connected to the PLC controller. The reflective photoelectric sensor is used to detect whether the tray column reaches between the transmitter and the receiver. When the reflective photoelectric sensor detects the tray column, the receiver sends a signal to the PLC controller, and the PLC controller controls the blowing device to generate an air flow to blow towards the bobbin. If the filament end of the bobbin falls off, the filament end is blown towards the space between the grating transmitter and the grating receiver by the air flow.

8. The detecting device for the shedding of the yarn end of a yarn cake according to claim 7, characterized in that, The detection device for the shedding of the filament end of the bobbin also includes a stopper and a release button; The stopper is located between the blowing device and the automatic external inspection machine; The PLC controller is respectively electrically connected to the motor and the stopper; when the PLC controller receives the signal sent by the grating receiver, the PLC controller controls the motor to stop moving and starts the stopper; The release button is electrically connected to the PLC controller. After the release button is pressed, the PLC controller receives the information sent by the release button, closes the stopper, and starts the motor.

9. The detecting device for the shedding of the yarn end of a bobbin according to claim 8, characterized in that, Along the transportation direction of the conveyor line, the distance between the blowing device and the automatic film wrapping machine is 1 - 1.5 meters.

Images