Broken yarn detection device based on piezoelectric ceramics
By using piezoelectric ceramic sheets and wire-through ceramic eye structures in the yarn break detection device, the problem of infrared sensors being blocked by dust and wax powder is solved, and more accurate yarn disconnection detection is achieved, improving the accuracy of alarms.
Patent Information
- Application Number
- CN202420604653.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-27
AI Technical Summary
During the weaving process of existing yarn break detection devices, due to dust and wax powder adhering to the infrared sensor, the accuracy of yarn judgment is affected, resulting in inaccurate alarms.
Using a yarn break detection device based on piezoelectric ceramics, through the annular hollow piezoelectric ceramic sheet and the through-line ceramic eye structure, the vibration output voltage is generated when the yarn passes through. When the yarn is disconnected, the vibration stops and the control board cannot detect the voltage. Alarms are issued only after changes to avoid false alarms.
Improve the alarm accuracy of yarn break detection, reduce false alarms, and enhance the detection accuracy of yarn disconnection.
Smart Images
Figure CN222182692U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of yarn break detection devices, and more specifically, to a yarn break detection device based on piezoelectric ceramics. Background Art
[0002] The yarn break detection device is used in the knitting process of the sock machine and can sound an alarm when the yarn is broken.
[0003] The existing yarn break detection device often includes an infrared sensor, which uses an infrared transmitting tube and an infrared receiving tube to judge the movement of the yarn, and transmits the status of whether the yarn is moving to the host through a communication line. The host will alarm after judging. However, there will be dust and lint on the yarn itself. In order to weave more high-end and comfortable socks and prevent yarn breakage, the yarn is often waxed during weaving. Dust, lint and wax powder will stick to the infrared sensor, blocking the light, affecting the sensor's judgment of the yarn, thereby affecting the accuracy of the alarm.
[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a yarn break detection device based on piezoelectric ceramics, which has higher alarm accuracy.
[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a yarn break detection device based on piezoelectric ceramics includes a main body, a mounting hole is opened on the main body, a piezoelectric sensor is arranged in the mounting hole, a connecting piece is arranged at one end of the main body, a bracket is arranged on the top surface of the connecting piece, the bracket includes a vertical wing and a horizontal wing, the vertical wing is connected to the connecting piece, the horizontal wing is connected to the top of the vertical wing, the piezoelectric sensor includes a hollow annular piezoelectric ceramic sheet, the annular hollow of the piezoelectric ceramic sheet is formed with a ceramic eye for passing a wire, a threading hole is opened on the horizontal wing, and an elastic component for increasing the yarn tension is arranged on the vertical wing.
[0007] The utility model is further configured as follows: the elastic component includes a connecting shaft, a fixed cylinder is arranged on the connecting shaft, a sliding cylinder is slidably connected outside the fixed cylinder, and a spring is arranged between the fixed cylinder and the sliding cylinder for keeping the sliding cylinder located on the line connecting the wire ceramic eye and the threading hole.
[0008] The utility model is further configured as follows: a fixing buckle is provided on the side of the connecting piece away from the main body, the fixing buckle includes an upper buckle and a lower buckle, the upper buckle is made of elastic material, and the upper buckle gradually bends downward from the direction close to the connecting piece to the direction away from the connecting piece.
[0009] The utility model is further configured as follows: the thickness of the upper buckle is greater than the thickness of the lower buckle.
[0010] In summary, the utility model has the following beneficial effects:
[0011] The utility model is provided with a piezoelectric sensor, which includes a hollow annular piezoelectric ceramic sheet. The hollow annular piezoelectric ceramic sheet forms a wire-passing ceramic eye. When in use, the yarn passes through the threading hole and the wire-passing ceramic eye. In the process of the yarn passing through, it rubs against the eye wall of the wire-passing ceramic eye, which causes the piezoelectric ceramic sheet to vibrate. The piezoelectric sensor can output a jumping voltage. When the yarn is disconnected, the yarn at the rear end stops moving, so the yarn is stationary relative to the wire-passing ceramic eye, the vibration of the piezoelectric ceramic sheet disappears, and the jumping voltage cannot be output. The output end of the piezoelectric ceramic sheet is electrically connected to the control board. The control board will only issue an alarm when it cannot detect the jumping voltage, reminding that the yarn is disconnected, avoiding false alarms, and increasing the accuracy of the alarm. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] In the figure: 1. Main body; 2. Connector; 3. Vertical wing; 4. Horizontal wing; 5. Piezoelectric ceramic sheet; 6. Wire-passing ceramic eye; 7. Threading hole; 8. Connecting shaft; 9. Fixed cylinder; 10. Sliding cylinder; 11. Upper buckle; 12. Lower buckle. DETAILED DESCRIPTION
[0014] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.
[0015] Embodiment: A yarn break detection device based on piezoelectric ceramics, such as Figure 1As shown, the main body 1 includes a control board (not shown in the figure), a mounting hole is provided on the main body 1, a piezoelectric sensor is arranged in the mounting hole, the piezoelectric sensor is electrically connected to the control board, a connector 2 is provided at one end of the main body 1, a bracket is provided on the top surface of the connector 2, the bracket includes a vertical wing 3 and a horizontal wing 4, the vertical wing 3 and the horizontal wing 4, the vertical wing 3 is connected to the connector 2, the horizontal wing 4 is connected to the top of the vertical wing 3, the piezoelectric sensor includes a hollow annular piezoelectric ceramic sheet 5, the piezoelectric ceramic sheet 5 is hollow in annular shape and has a wire-passing ceramic eye 6, a threading hole 7 is provided on the horizontal wing 4, and a threading hole 7 for increasing the yarn tension is provided on the vertical wing 3. The elastic component, when in use, the yarn will pass through the threading hole 7 and the thread-passing ceramic eye 6, the elastic component can resist the yarn to increase the tension of the yarn, and the yarn will rub against the eye wall of the thread-passing ceramic eye 6 during the passage, causing the piezoelectric ceramic piece 5 to vibrate, and the piezoelectric sensor can output a jumping voltage. When the yarn is disconnected, the yarn at the rear end stops moving, the yarn is stationary relative to the thread-passing ceramic eye 6, the vibration of the piezoelectric ceramic piece 5 disappears, and the jumping voltage cannot be output. The output end of the piezoelectric ceramic piece 5 is electrically connected to the control board, and the control board will only issue an alarm when it cannot detect the jumping voltage, reminding that the yarn is disconnected, avoiding false alarms, and increasing the accuracy of the alarm.
[0016] The elastic component includes a connecting shaft 8, on which a fixed cylinder 9 is arranged, and a sliding cylinder 10 is slidably connected outside the fixed cylinder 9. A spring is arranged between the fixed cylinder 9 and the sliding cylinder 10 to keep the sliding cylinder 10 on the line connecting the thread-passing ceramic eye 6 and the threading hole 7. The spring has restorative properties and can push the sliding cylinder 10. The sliding cylinder 10 can apply pressure to the yarn, and there is an angle between the direction of the pressure and the direction of yarn travel, thereby increasing the tension of the yarn, making the pressure on the eye wall of the thread-passing ceramic eye 6 greater and the detection more accurate.
[0017] A fixing buckle is provided on the side of the connecting member 2 away from the main body 1, and the fixing buckle includes an upper buckle 11 and a lower buckle 12. The upper buckle 11 is made of elastic material, and the upper buckle 11 gradually bends downward from the direction close to the connecting member 2 to the direction away from the connecting member 2. The upper buckle 11 and the lower buckle 12 can be buckled with the installed part, and the downward bending will produce elastic deformation after buckling with the installed part. The upper buckle 11 can also apply pressure to the installed part, which can make the installation more stable. The thickness of the upper buckle 11 is greater than that of the lower buckle 12, which can make the upper buckle 11 stronger and increase the elastic coefficient of the upper buckle 11, so that the buckling force of the fixing buckle is greater and the installation is more stable.
[0018] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A yarn break detection device based on piezoelectric ceramics, characterized in that: The invention comprises a main body (1), a mounting hole is provided on the main body (1), a piezoelectric sensor is arranged in the mounting hole, a connecting piece (2) is provided at one end of the main body (1), a bracket is provided on the top surface of the connecting piece (2), the bracket comprises a vertical wing (3) and a horizontal wing (4), the vertical wing (3) is connected to the connecting piece (2), the horizontal wing (4) is connected to the top of the vertical wing (3), the piezoelectric sensor comprises a hollow annular piezoelectric ceramic sheet (5), a ceramic eye (6) for passing a wire is formed in the hollow annular shape of the piezoelectric ceramic sheet (5), a threading hole (7) is provided on the horizontal wing (4), and an elastic component for increasing the tension of the yarn is provided on the vertical wing (3).
2. A yarn break detection device based on piezoelectric ceramics according to claim 1, characterized in that: The elastic component comprises a connecting shaft (8), a fixed cylinder (9) is arranged on the connecting shaft (8), a sliding cylinder (10) is slidably connected outside the fixed cylinder (9), and a spring is arranged between the fixed cylinder (9) and the sliding cylinder (10) for keeping the sliding cylinder (10) located on the line connecting the wire ceramic eye (6) and the threading hole (7).
3. The piezoelectric ceramic-based yarn breakage detection device according to claim 1, characterized in that: A fixing buckle is provided on a side of the connecting member (2) away from the main body (1), the fixing buckle comprising an upper buckle (11) and a lower buckle (12), the upper buckle (11) being made of elastic material, and the upper buckle (11) gradually bends downward from a direction close to the connecting member (2) to a direction away from the connecting member (2).
4. The piezoelectric ceramic-based yarn breakage detection device according to claim 3, characterized in that: The thickness of the upper buckle (11) is greater than the thickness of the lower buckle (12).