PCB-based reluctance yarn tensioner

Abstract

The application discloses a PCB-based magnetic resistance type yarn tensioner, which comprises a left shell, a right shell, a left PCB board, a right PCB board, a mandrel, a rotor and a thread holding wheel, the left shell and the right shell are connected in a cover combination mode, the left PCB board and the right PCB board with a spacing are arranged between the left shell and the right shell, the rotor is arranged between the left PCB board and the right PCB board, one end of the mandrel is arranged at the center of the left PCB board and the right PCB board, penetrates through the left shell and the right shell and is rotationally connected, the center of the rotor is fixedly connected with the mandrel, the rotor can rotate around the axis of the mandrel between the left PCB board and the right PCB board, and the other end of the mandrel is connected with the thread holding wheel; the left PCB board and the right PCB board are provided with excitation coils which are annularly arranged around the mandrel, and the directions of the adjacent excitation coils on the left PCB board or the right PCB board are opposite. After the coil is electrified, a constant magnetic field is formed between the left PCB board and the right PCB board, so that the rotor is subjected to a constant magnetic hysteresis torque in the process of rotation, and the torque is transmitted to the thread holding wheel through the mandrel to generate a constant and adjustable tension.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of yarn tensioner, in particular to a magnetic resistance type yarn tensioner based on PCB. BACKGROUND

[0002] In the textile industry, the tension control precision and range of yarn is a key indicator to measure the level of textile industry. Excessive yarn tension will cause yarn breakage or irreversible damage to the yarn. Small yarn tension will cause the textile product to be loose and difficult to shape. Therefore, the design of the tensioner is very important.

[0003] The existing tensioner in China is still mainly friction type tensioner. The tension control mainly relies on the friction force generated when the machine directly contacts the yarn as the tension control. The yarn is damaged, the control precision is low, the control range is discontinuous, the maintenance cost is high, it is difficult to be compatible with automation and computer control. In addition, with the increase of use time, the accumulation of dust will occur, resulting in a significant decrease in tension accuracy.

[0004] Therefore, a magnetic resistance type yarn tensioner based on PCB is needed to solve the problem of low control precision of traditional yarn tensioner. SUMMARY

[0005] The present application provides a magnetic resistance type yarn tensioner based on PCB to solve the problem of low control precision of traditional yarn tensioner.

[0006] To achieve the above purpose, the following technical solutions are adopted:

[0007] A magnetic resistance type yarn tensioner based on PCB, characterized in that: it comprises a left shell, a right shell, a left PCB, a right PCB, a mandrel, a rotor and a line holding wheel, the left shell and the right shell are connected by a cover, and the left PCB and the right PCB with a spacing are installed between them, the rotor is arranged between the left PCB and the right PCB, one end of the mandrel is at the center of the left PCB and the right PCB, penetrates the left shell and the right shell and is rotationally connected, the center of the rotor is fixedly connected with the mandrel, the rotor can rotate around the axis of the mandrel between the left PCB and the right PCB, and the other end of the mandrel is connected with the line holding wheel for winding the yarn; a plurality of excitation coils are symmetrically distributed on the left PCB and the right PCB and are annularly distributed around the mandrel, and the directions of adjacent excitation coils on the left PCB or the right PCB are opposite.

[0008] To optimize the above technical solutions, the following specific measures are taken:

[0009] Further, the opposite faces of the left and right shells are respectively provided with symmetrical annular mounting grooves, the left and right PCB boards are respectively mounted in the two annular mounting grooves, and the end of the mandrel penetrates the left and right shells and is rotatably arranged at the center of the annular mounting groove.

[0010] Further, the end of the mandrel penetrates the left and right shells and is rotatably arranged at the center of the annular mounting groove through a bearing.

[0011] Further, a plurality of mounting holes are provided on the left and right shells and are spaced apart between the outer rings of the annular mounting grooves, the left and right shells are fixed by penetrating the corresponding mounting holes through the shell bolts and cooperating with the shell nuts.

[0012] Further, the left and right PCB boards are rotatably mounted in the corresponding annular mounting grooves around the center of the annular mounting groove, and a plurality of holes are provided on the left and right PCB boards around the center of the annular mounting groove, the left and right shells are provided with limiting holes corresponding to the holes, and the left shell, the left PCB board, the right PCB board and the right shell are sequentially connected through the PCB bolts penetrating the corresponding limiting holes and holes.

[0013] Further, the holes are arc-shaped and are spaced apart in groups around the center of the annular mounting groove, the distance and angle between each group of holes are the same, and the distance from each group of holes to the center of the annular mounting groove is equal, and each group of holes is provided with one limiting hole.

[0014] Further, it further includes a gasket, the center of the gasket is provided with the PCB bolt, the gasket is arranged between the left and right PCB boards, and the gasket is sleeved on the PCB bolt.

[0015] Further, the distance between the gasket and the mandrel is greater than the diameter of the rotor.

[0016] Further, the excitation coil is provided with a plurality of layers.

[0017] Further, the left and right shells are respectively provided with guide holes, and the guide holes can provide current for the excitation coil.

[0018] The beneficial effects of the present application are:

[0019] The application is characterized in that the layout design of the excitation coil on the left PCB plate and the right PCB plate, since the left PCB plate and the right PCB plate are distributed with a plurality of annular excitation coils, after being electrified, annular current will be formed on the coil, under the action of the annular current, the adjacent coils will form magnetic poles with opposite directions, under the action of the magnetic poles, a constant magnetic field will be formed between the left PCB plate and the right PCB plate, so that the yarn winding on the thread holding wheel will be subjected to a constant magnetic hysteresis torque in the process of driving the mandrel and the rotor to rotate, the torque will be transmitted to the thread holding wheel through the mandrel to generate a constant tension, the size of the final tension can be controlled by changing the size of the current, and different ranges of tension control range and precision can be obtained by changing the size of the magnetic bias angle by rotating the angle between the left PCB plate and the right PCB plate.

[0020] The application uses the left PCB plate, the right PCB plate and the excitation coil thereon to replace the stator and the coil in the traditional electromagnetic tensioner, not only greatly reduces the weight and volume of the tensioner, but also improves the utilization rate of the magnetic field generated by the coil, and is more convenient to assemble.

[0021] The application can not only accurately and continuously control the size of the yarn tension, but also can be compatible with automatic control, adapt to different range of tension range requirements, has low maintenance cost, strong anti-interference ability, simple structure and easy to use and promote, and solves the problems of low control precision, large volume, large weight and low automation degree of the traditional yarn tensioner. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a sectional view of the overall structure of a magnetic resistance type yarn tensioner based on a PCB plate according to the application;

[0023] Figure 2 It is an exploded view of the structure of a magnetic resistance type yarn tensioner based on a PCB plate according to the application;

[0024] Figure 3 It is a structural schematic view of the right shell of a magnetic resistance type yarn tensioner based on a PCB plate according to the application;

[0025] Figure 4 It is a structural schematic view of the right PCB plate of a magnetic resistance type yarn tensioner based on a PCB plate according to the application;

[0026] Figure 5 It is a magnetic circuit direction schematic view of a magnetic resistance type yarn tensioner based on a PCB plate according to the application.

[0027] Reference signs: 1. housing nut, 2. PCB nut, 3. left housing, 4. left PCB board, 5. bearing, 6. rotor, 7. right PCB board, 8. thread wheel, 9. mandrel, 10. right housing, 11. PCB bolt, 12. gasket, 13. housing bolt, 14. guide hole. DETAILED DESCRIPTION

[0028] The application will be further described in detail in combination with the drawings.

[0029] As shown in the drawings Figure 1 , the drawings Figure 2 , the drawings Figure 4 and the drawings Figure 5 , a PCB-based reluctance yarn tensioner of the embodiment of the application comprises a left housing 3, a right housing 10, a left PCB board 4, a right PCB board 7, a mandrel 9, a rotor 6 and a thread wheel 8, the left housing 3 and the right housing 10 are connected in a cover combination, and the left PCB board 4 and the right PCB board 7 with a spacing are installed between the left housing 3 and the right housing 10, the rotor 6 is arranged between the left PCB board 4 and the right PCB board 7, one end of the mandrel 9 is at the center of the left PCB board 4 and the right PCB board 7, penetrates the left housing 3 and the right housing 10 and is rotationally connected, the center of the rotor 6 is fixedly connected with the mandrel 9, the rotor 6 can rotate around the axis of the mandrel 9 between the left PCB board 4 and the right PCB board 7, and the other end of the mandrel 9 is connected with the thread wheel 8 for yarn winding; a plurality of annular excitation coils distributed in a ring around the mandrel 9 are symmetrically distributed on the left PCB board 4 and the right PCB board 7, and the directions of the adjacent excitation coils on the left PCB board 4 or the right PCB board 7 are opposite.

[0030] The application is designed by the layout of the excitation coils on the left PCB board 4 and the right PCB board 7, since the left PCB board 4 and the right PCB board 7 are both distributed with a plurality of annular excitation coils, annular current will be formed on the coils after energization, and the adjacent coils will form magnetic poles with opposite directions under the action of the annular current, and a constant magnetic field as shown in the drawings Figure 5 will be formed between the left PCB board 4 and the right PCB board 7 under the action of the magnetic poles, so that the yarn winding on the thread wheel 8 will be subjected to a constant magnetic hysteresis torque during the process of driving the mandrel 9 and the rotor 6 to rotate, the torque will be transmitted to the thread wheel 8 through the mandrel 9 to generate a constant tension, the size of the final tension can be controlled by changing the size of the current, and different ranges of tension control range and precision can be obtained by changing the size of the magnetic bias angle by rotating the angle between the left PCB board 4 and the right PCB board 7.

[0031] The application uses the left PCB board 4, the right PCB board 7 and the excitation coils thereon to replace the stator and the coil in the traditional electromagnetic tensioner, which not only greatly reduces the weight and volume of the tensioner, but also improves the utilization rate of the magnetic field generated by the coil and facilitates assembly.

[0032] The yarn tension controller can precisely and continuously control the yarn tension, is compatible with automatic control, has a low maintenance cost, has a strong anti-interference ability, has a simple structure, is easy to use and popularize, and solves the problems of low control precision, large size, large weight and low automation degree of a traditional yarn tension controller.

[0033] In the scheme, the spindle 9 can be provided with a step for positioning so that the left PCB 4 and the right PCB 7 are at the same distance from the rotor 6, the wire holding wheel 8 and the spindle 9 can be matched by friction, the left housing 3 and the right housing 10 are of the same model, and the left PCB 4 and the right PCB 7 are of the same model.

[0034] As shown in the accompanying drawings, Figure 3 In a further specific embodiment based on the above, the opposite surfaces of the left housing 3 and the right housing 10 are respectively provided with symmetrical annular mounting grooves, the left PCB 4 and the right PCB 7 are respectively mounted in the two annular mounting grooves, the end of the spindle 9 penetrates the left housing 3 and the right housing 10 and is rotatably arranged at the center of the annular mounting groove, and there is a spacing between the left housing 3 and the right housing 10 for connecting the rotor 6 to the spindle 9. In this way, the left PCB 4 and the right PCB 7 are convenient to disassemble and assemble.

[0035] In a further specific embodiment based on the above, the end of the spindle 9 penetrates the left housing 3 and the right housing 10 and is rotatably arranged at the center of the annular mounting groove through the bearing 5.

[0036] In a further specific embodiment based on the above, a plurality of mounting holes are spaced apart on the left housing 3 and the right housing 10 and located outside the annular mounting grooves, the left housing 3 and the right housing 10 are fixed by the housing bolts 13 penetrating the corresponding mounting holes and cooperating with the housing nuts 1. In this way, the left housing 3 and the right housing 10 are convenient to disassemble and assemble. In the embodiment, the left housing 3 and the right housing 10 can also be fixed to other yarn supports by the housing bolts 13 cooperating with the housing nuts 1.

[0037] In the further specific embodiments based on the above, the left PCB plate 4 and the right PCB plate 7 are respectively rotatably installed in the corresponding annular installation slots, and a plurality of holes are respectively formed around the annular installation slot center on the left PCB plate 4 and the right PCB plate 7. A limiting hole is formed on the left shell 3 and the right shell 10 corresponding to the hole, and the left shell 3, the left PCB plate 4, the right PCB plate 7 and the right shell 10 are sequentially connected by the PCB bolt 11 passing through the corresponding limiting hole and the hole. In this way, in use, the angle of the left PCB plate 4 or the right PCB plate 7 can be adjusted by rotating the corresponding left PCB plate 4 or right PCB plate 7, so as to adjust the required tension control range, and the position of the left PCB plate 4 and the right PCB plate 7 is controlled by the PCB bolt 11 and the PCB nut 2. Specifically, in use, the left shell 3 and the right shell 10 can be disassembled first, and then reassembled after adjustment.

[0038] In the further specific embodiments based on the above, the holes are arc-shaped and are spaced apart around the annular installation slot center, the distance and angle between each group of holes are the same, and the distance from each group of holes to the annular installation slot center is equal, and each group of holes is provided with a limiting hole. In use, the hole at the required position is rotated to align with the corresponding limiting hole.

[0039] In the further specific embodiments based on the above, a gasket 12 is further included, the center of the gasket 12 is provided for the PCB bolt 11 to pass through, the gasket 12 is arranged between the left PCB plate 4 and the right PCB plate 7, and the gasket 12 is sleeved on the PCB bolt 11. In this way, the distance between the left PCB plate 4 and the right PCB plate 7 can be ensured by the gasket 12. In use, the distance between the left PCB plate 4 and the right PCB plate 7 and the rotor 6 can be adjusted by changing the thickness of the gasket 12 and matching the depth of the annular installation slot.

[0040] In the further specific embodiments based on the above, the distance between the gasket 12 and the mandrel 9 is greater than the diameter of the rotor 6.

[0041] In the further specific embodiments based on the above, the excitation coil is provided with a plurality of layers as needed.

[0042] In the further specific embodiments based on the above, the left shell 3 and the right shell 10 are respectively provided with a guide hole 14, the guide hole 14 is provided for the excitation coil to provide current through the power supply wire, and the power supply outputs a current of a specific size to the two PCB plates through the wire.

[0043] In the above scheme, the structure of the left shell 3 and the right shell 10 can be symmetrical to each other and have the same thickness, and the structure of the left PCB plate 4 and the right PCB plate 7 can be symmetrical to each other and have the same thickness.

[0044] The method for using the device of the present application is as follows:

[0045] The PCB plate 4 and the right PCB plate 7 are connected with an external power source through wires via the guide hole 14. Under the condition of power-on, the coils on the PCB plate 4 and the right PCB plate 7 will form corresponding magnetic poles, and a constant magnetic field will be formed between the PCB plate 4 and the right PCB plate 7 through the corresponding magnetic pole distribution. The rotor 6 rotates in the magnetic field to form a constant hysteresis torque, which is transmitted to the wire clamping wheel 8 through the mandrel 9 to form a corresponding size of tension. By changing the relative angle of the rotating PCB plate 4 and the right PCB plate 7, the magnetic bias angle between the coils can be changed, different magnetic field distributions and hysteresis torques are generated, and thus different ranges of tension control are obtained.

[0046] The size of the tension can also be controlled by changing the size of the power current. The greater the current, the greater the tension ultimately generated. The size of the tension can also be controlled by adjusting the thickness of the gasket 12, such as the distance between the PCB plate 4 and the right PCB plate 7 and the rotor 6. The closer the distance, the greater the final tension. The size of the tension can also be controlled by changing the thickness of the rotor 6. Within a certain range, the thicker the rotor 6, the greater the tension.

[0047] The relative parameters of the rotor 6, the PCB plate 4 and the right PCB plate 7 can obtain a relatively stable hysteresis torque to provide stable tension for the yarn. Not only does it solve the problem of low tension control precision and discontinuous control range of traditional tensioners, but it also effectively reduces the volume, weight and cost of traditional tensioners. At the same time, it is compatible with automation and computer control, and meets the future requirements of the textile industry for precise control of yarn tension.

[0048] It should be noted that the terms such as "up", "down", "left", "right", "front", "back" and the like cited in the invention are only for the convenience of clear description, and are not intended to limit the scope of the invention. The change or adjustment of the relative relationship is also considered as the scope of the invention without substantial change in technical content.

[0049] The above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the scope of the present application is within the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application are considered as the protection scope of the present application.

Claims

1. A PCB-based magnetoresistive yarn tensioner, characterized in that: The device includes a left outer shell (3), a right outer shell (10), a left PCB board (4), a right PCB board (7), a spindle (9), a rotor (6), and a wire-holding reel (8). The left outer shell (3) and the right outer shell (10) are connected and fitted together, with a gap between the left PCB board (4) and the right PCB board (7). The rotor (6) is positioned between the left PCB board (4) and the right PCB board (7). One end of the spindle (9) is located at the center of the left PCB board (4) and the right PCB board (7), penetrating through the left outer shell (3). 3) The rotor (6) is rotatably connected to the right outer shell (10). The center of the rotor (6) is fixedly connected to the spindle (9). The rotor (6) can rotate around the axis of the spindle (9) between the left PCB board (4) and the right PCB board (7). The other end of the spindle (9) is connected to a yarn-holding wheel (8) for yarn winding. Several excitation coils are symmetrically distributed on the left PCB board (4) and the right PCB board (7) in a ring shape around the spindle (9). The directions of adjacent excitation coils on the left PCB board (4) or the right PCB board (7) are opposite. The left outer shell (3) and the right outer shell (10) are respectively provided with symmetrical annular mounting grooves on their opposite surfaces. The left PCB board (4) and the right PCB board (7) are respectively installed in the two annular mounting grooves. The end of the spindle (9) passes through the left outer shell (3) and the right outer shell (10) and is rotatably set at the center of the annular mounting groove. There is a gap between the left outer shell (3) and the right outer shell (10) for the rotor (6) to connect to the spindle (9). The excitation coil has several layers.

2. The PCB-based magnetoresistive yarn tensioner according to claim 1, characterized in that: The end of the mandrel (9) passes through the left outer shell (3) and the right outer shell (10) and is rotatably positioned at the center of the annular mounting groove via the bearing (5).

3. The PCB-based magnetoresistive yarn tensioner according to claim 1, characterized in that: The left outer shell (3) and the right outer shell (10) are provided with several mounting holes spaced apart on the outer ring of the annular mounting groove. The left outer shell (3) and the right outer shell (10) are fixed by the outer shell bolts (13) passing through the corresponding mounting holes and cooperating with the outer shell nuts (1).

4. A PCB-based magnetoresistive yarn tensioner according to claim 1, characterized in that: The left PCB board (4) and the right PCB board (7) are respectively rotatably mounted in the corresponding annular mounting groove around the center of the annular mounting groove. The left PCB board (4) and the right PCB board (7) are provided with a number of holes around the center of the annular mounting groove. The left outer shell (3) and the right outer shell (10) are provided with limit holes corresponding to the holes. The left outer shell (3), the left PCB board (4), the right PCB board (7) and the right outer shell (10) are connected by PCB bolts (11) passing through the corresponding limit holes and holes in sequence for limit connection.

5. A PCB-based magnetoresistive yarn tensioner according to claim 4, characterized in that: The holes are arranged in an arc shape around the center of the annular mounting groove in multiple groups. The spacing and angle between each group of holes are the same, and the distance from the center of the annular mounting groove is equal. Each group of holes corresponds to a limiting hole.

6. A PCB-based magnetoresistive yarn tensioner according to claim 4, characterized in that: It also includes a gasket (12), the center of which allows the PCB bolt (11) to pass through. The gasket (12) is disposed between the left PCB board (4) and the right PCB board (7), and the gasket (12) is fitted onto the PCB bolt (11).

7. A PCB-based magnetoresistive yarn tensioner according to claim 6, characterized in that: The distance between the gasket (12) and the spindle (9) is greater than the diameter of the rotor (6).

8. A PCB-based magnetoresistive yarn tensioner according to claim 1, characterized in that: Both the left outer shell (3) and the right outer shell (10) have guide holes (14), which can provide current to the external power supply wire of the excitation coil.

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