Double-shaft winding structure of needle selector

Abstract

The utility model discloses a double-shaft winding structure of a needle selector. Relates to the technical field of needle selectors. The winding specifically comprises a first spiral winding and a second spiral winding, the first spiral winding is provided with a first winding shaft, the second spiral winding is provided with a second winding shaft, and at least part of the first winding shaft and at least part of the second winding shaft are arranged in parallel at intervals; the through-flow directions of the first spiral winding and the second spiral winding are opposite, the electrified first spiral winding demagnetizes the first winding shaft, and the electrified second spiral winding demagnetizes the second winding shaft. The top end of the first winding shaft is N pole after being magnetized, the top end of the first winding shaft is S pole after being magnetized, and when the first winding shaft and the second winding shaft attract the spring needle, the spring needle conducts the first winding shaft and the second winding shaft, so that magnetic induction lines outside the first winding shaft and the second winding shaft are spread along the spring needle, and magnetic induction lines outside the first winding shaft and the second winding shaft are transmitted along the spring needle. Therefore, interference with a surrounding magnetic field can be reduced, energy loss of magnetic induction lines can be reduced, needle selection accuracy is guaranteed, and production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to needle selector technical field, especially a kind of double-shaft winding structure of needle selector. BACKGROUND

[0002] People's daily wear sweater is mostly multi-color yarn knitting, in the production process, a color of yarn needs to stop operation when carrying out knitting operation, thus needs to select and stop various color yarns in knitting process. At present, electromagnetic needle selection technology controlled by computer is generally used to control flat knitting machine to select needle, so as to realize the re-arrangement of sweater color, and various color sweaters are formed by the frequent operation of needle selector.

[0003] At present, the needle selector of flat knitting machine mostly adopts electromagnetic needle selector. The electromagnetic needle selector is widely used due to its simple structure and convenient use. The electromagnetic needle selector is usually provided with winding structure corresponding to the number of spring needle of flat knitting machine. By magnetizing or demagnetizing corresponding winding structure, the corresponding spring needle is adsorbed or released, so as to achieve the purpose of needle selection.

[0004] In the prior art, the winding structure of the needle selector for single spring needle is adsorbed or released by single winding. The magnetic induction loop of single winding is scattered, and the magnetic field is greatly interfered. When the winding structure adsorbs or releases the corresponding spring needle, it is easy to generate a large magnetic force on the surrounding winding structure and spring needle, which may cause needle selection error, and further cause knitting error, thereby affecting production efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiency of the prior art, and provides a double-shaft winding structure of needle selector, which can reduce the magnetic interference between winding structures, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0006] The utility model provides a double-shaft winding structure of needle selector, which comprises a first spiral winding and a second spiral winding. The first spiral winding has a first winding shaft, and the second spiral winding has a second winding shaft. At least part of the first winding shaft is arranged in parallel and spaced apart from at least part of the second winding shaft. After the first winding shaft is magnetized, the top end thereof presents N pole. After the second winding shaft is magnetized, the top end thereof presents S pole. The through-flow direction of the first spiral winding and the second spiral winding is opposite. The first spiral winding that is electrified makes the first winding shaft demagnetized, and the second spiral winding that is electrified makes the second winding shaft demagnetized.

[0007] Further, the first spiral winding further has a first winding which is spirally wound on the outer periphery of the first winding shaft, and the second spiral winding further has a second winding which is spirally wound on the outer periphery of the second winding shaft.

[0008] Further, the first winding has a first end connected to a positive pole of a power supply circuit, and the second winding has a second end connected to a negative pole of the power supply circuit, and the double-shaft winding structure further comprises a connecting wire for connecting the first winding and the second winding in series, one end of the connecting wire being connected to the second end of the first winding, and the other end of the connecting wire being connected to the first end of the second winding.

[0009] Further, the first winding, the second winding and the connecting wire are the same enameled wire.

[0010] Further, the first winding is spirally wound on the outer periphery of the first winding shaft from bottom to top, and the second winding is spirally wound on the outer periphery of the first winding shaft from top to bottom.

[0011] Further, the second winding has an end extended to a side where the first winding has an end, so that the end of the second winding and the end of the first winding are routed on the same side.

[0012] Further, the double-shaft winding structure further comprises a permanent magnet arranged between the first spiral winding and the second spiral winding, the bottom end of the first winding shaft is in contact with an N pole of the permanent magnet, and the bottom end of the second winding shaft is in contact with an S pole of the permanent magnet.

[0013] Further, the double-shaft winding structure further comprises an isolation sheet arranged between the first spiral winding and the second spiral winding, and the isolation sheet isolates the first winding shaft and the second winding shaft.

[0014] Further, the top end of the first winding shaft is provided with a first contact surface, the top end of the second winding shaft is provided with a second contact surface, and the first contact surface and the second contact surface are on the same horizontal plane.

[0015] Further, the first winding shaft comprises a main body portion arranged in parallel and spaced apart from the second winding shaft, an inclined portion inclined towards the second winding shaft, and an extension portion arranged in parallel and spaced apart from the second winding shaft, the inclined portion is arranged at the top of the main body portion, the extension portion is arranged at the top of the inclined portion, and the first contact surface is arranged at the top of the extension portion.

[0016] The double-shaft winding structure of the needle selector has the following beneficial effects:

[0017] (1) The double-axis winding structure includes a first spiral winding and a second spiral winding, the first spiral winding has a first winding axis, and the second spiral winding has a second winding axis, the top end of the first winding axis is N-pole after magnetization, and the top end of the first winding axis is S-pole after magnetization, so that when the first winding axis and the second winding axis adsorb the spring needle, the spring needle conducts the first winding axis and the second winding axis, the magnetic induction lines outside the first winding axis and the second winding axis propagate in the spring needle, thereby reducing the magnetic field interference between the surrounding magnetic rods and the energy loss of the magnetic induction lines, and further ensuring the accuracy of needle selection and improving the production efficiency;

[0018] (2) The first spiral winding of the double-axis winding structure also has a first winding line, the first winding line is spirally wound on the outer periphery of the first winding axis, and the second spiral winding also has a second winding line, the second winding line is spirally wound on the outer periphery of the second winding axis, the flow direction of the first winding line and the second winding line is opposite, so that the first winding axis is demagnetized by the first winding line, and the second winding axis is demagnetized by the second winding line, so that the first winding axis and the second winding axis simultaneously release the adsorbed spring needle, and the needle selection of the needle selector is realized;

[0019] (3) The double-axis winding structure also includes a connecting line, one end of the connecting line is connected with the tail end of the first winding line, and the other end of the connecting line is connected with the head end of the second winding line, so that the first winding line and the second winding line are connected in series, and the power supply circuit can simultaneously flow through the first winding line and the second winding line, the structure of the needle selector is more compact, and the production cost is reduced;

[0020] (4) The production of the first winding line and the second winding line of the double-axis winding structure, and the series connection of the first winding line and the second winding line by the connecting line can use the same enameled wire, so that the use of enameled wire is reduced, the production cost is reduced, the series connection of the first winding line and the second winding line is simpler, the implementation of the double-axis winding structure is simpler and more convenient, and the production efficiency is further improved;

[0021] (5) The tail end of the second winding line extends to one side where the head end of the first winding line is located, so that the tail end of the second winding line and the head end of the first winding line are located on the same side, the head end of the first winding line is connected with the positive electrode of the power supply circuit on the same side, and the tail end of the second winding line is connected with the negative electrode of the power supply circuit, so that the connection of the first winding line and the second winding line with the power supply circuit is simpler and more convenient, easy to implement, and the wiring of the power supply circuit is more regular, so that the implementation of the double-axis winding structure is simpler and more convenient, and the production efficiency is further improved;

[0022] (6) the double shaft winding structure further comprises a permanent magnet, the bottom end of the first winding shaft is in contact with the N pole of the permanent magnet, and the bottom end of the second winding shaft is in contact with the S pole of the permanent magnet; the first winding shaft, the permanent magnet and the second winding shaft are regarded as a whole magnet, the first winding shaft is the N pole of the magnet, the second winding shaft is the S pole of the magnet, the N pole and the S pole of the magnet are conducted through the spring needle, the magnetic induction lines outside the magnet are propagated in the spring needle, so that the magnetic field interference between the magnet and the surrounding magnetic rod is reduced, the energy loss of the magnetic induction lines is reduced, the accuracy of needle selection is ensured, and the production efficiency is improved;

[0023] (7) the top end of the first winding shaft of the double shaft winding structure is provided with a first contact surface, the top end of the second winding shaft is provided with a second contact surface, and the first contact surface and the second contact surface are arranged on the same horizontal plane, so that when the first winding shaft and the second winding shaft adsorb the spring needle, the first contact surface and the second contact surface better contact the spring needle, and then the spring needle better conducts the first contact surface and the second contact surface, further reduces the dispersion of the magnetic induction lines, and enhances the adsorption force of the first winding shaft and the second winding shaft on the spring needle;

[0024] (8) the first winding shaft of the double shaft winding structure comprises a main body part, an inclined part and an extension part, the inclined part is inclined towards the direction of the second winding shaft at the top of the main body part, the extension part is arranged at the top of the inclined part, so that the distance between the extension part and the second winding shaft is smaller than the distance between the main body part and the second winding shaft, and the first contact surface is arranged at the top of the extension part, so that the distance between the first contact surface and the second contact surface can be reduced, and it is ensured that the first contact surface and the second contact surface can contact different positions of the spring needle. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In these drawings, like reference numerals are used to represent similar elements.

[0026] Fig. 1 It is a structure schematic view of the double shaft winding structure of the needle selector of the embodiment of the present application;

[0027] Fig. 2 It is a structure schematic view of the first spiral winding of the double shaft winding structure of the needle selector of the embodiment of the present application;

[0028] Fig. 3 It is a structure schematic view of the second spiral winding of the double shaft winding structure of the needle selector of the embodiment of the present application;

[0029] Fig. 4 It is a structure schematic view of the first winding shaft of the double shaft winding structure of the needle selector of the embodiment of the present application.

[0030] In the figure: 1, first spiral winding; 11, first winding axis; 111, main body; 112, inclined part; 113, extension; 1131, first contact surface; 12, first winding wire; 2, second spiral winding; 21, second winding axis; 211, second contact surface; 22, second winding wire; 3, connecting wire; 4, permanent magnet; 5, isolation sheet. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments of the present application belong to the scope of protection of the present application.

[0032] Please refer to Figs. 1-4 The double-axis winding structure of the needle selector includes a first spiral winding 1 and a second spiral winding 2. The first spiral winding 1 has a first winding axis 11, and the second spiral winding 2 has a second winding axis 21. At least part of the first winding axis 11 is arranged in parallel and spaced apart from at least part of the second winding axis 21. After the first winding axis 11 is magnetized, the top end thereof presents an N pole. After the second winding axis 21 is magnetized, the top end thereof presents an S pole. The first winding axis 11 and the second winding axis 21 can be magnetic rods. The current flow directions of the first spiral winding 1 and the second spiral winding 2 are opposite. The first spiral winding 1 being electrified causes the first winding axis 11 to demagnetize, and the second spiral winding 2 being electrified causes the second winding axis 21 to demagnetize.

[0033] In the present application, the double-axis winding structure includes a first spiral winding 1 and a second spiral winding 2. The first spiral winding 1 has a first winding axis 11, and the second spiral winding 2 has a second winding axis 21. At least part of the first winding axis 11 is arranged in parallel and spaced apart from at least part of the second winding axis 21. After the first winding axis 11 is magnetized, the top end thereof presents an N pole. After the second winding axis 21 is magnetized, the top end thereof presents an S pole. Therefore, the first spiral winding 1 and the second spiral winding 2 can simultaneously adsorb the spring needle through the first winding axis 11 and the second winding axis 21, thereby realizing the attraction of the corresponding spring needle.

[0034] Because of the magnetic induction line direction of the magnet, the outside of the magnet is from the N pole to the S pole, and the inside of the magnet is from the S pole to the N pole. In the prior art, the winding structure of the needle selector for a single spring needle is adsorbed or released by the same magnetic pole. However, the magnetic induction line loop of the same magnetic pole is scattered, and the magnetic fields interfere with each other greatly. When the winding structure adsorbs or releases the corresponding spring needle, a great magnetic force is easily generated on the surrounding winding structure and spring needle, thereby possibly leading to the error of the selection of the needle, further causing the error of the knitting, and affecting the production efficiency.

[0035] In the application, the top end of the first winding axis 11 of the first spiral winding 1 is N-pole after magnetization, and the top end of the second winding axis 21 of the second spiral winding 2 is S-pole after magnetization. When the first winding axis 11 and the second winding axis 21 simultaneously adsorb the corresponding spring needle, the spring needle conducts the top end of the first winding axis 11 and the top end of the second winding axis 21.

[0036] In the embodiment, the first winding axis 11, the second winding axis 21 and the spring needle are all made of soft magnetic material. Since air is a non-magnetic medium, its magnetic resistance is much larger than that of soft magnetic material. Similar to electric current, magnetic induction lines always take the path with the smallest magnetic resistance (the largest magnetic permeability). Therefore, outside the first winding axis 11 and the second winding axis 21, most of the magnetic induction lines are propagated from N-pole to S-pole in the spring needle.

[0037] On the one hand, the magnetic induction line loop outside the first winding axis 11 and the second winding axis 21 can be prevented from being scattered, thereby reducing the magnetic field interference with the surrounding winding structure. On the other hand, since the magnetic resistance of the spring needle is much smaller than that of air, the energy loss of the magnetic induction lines in the spring needle is small, thereby enhancing the adsorption force of the first winding axis 11 and the second winding axis 21 on the corresponding spring needle, and further ensuring the accuracy of needle selection and improving the production efficiency.

[0038] As mentioned above, the first winding axis 11 and the second winding axis 21 are made of soft magnetic material. Therefore, after the first winding axis 11 and the second winding axis 21 are magnetized, they can simultaneously generate magnetic attraction force on the corresponding spring needle, so that the spring needle moves and elastically deforms, thereby adsorbing the spring needle on the top end of the first winding axis 11 and the second winding axis 21, and realizing the adsorption of the corresponding spring needle by the needle selector.

[0039] Since the first winding axis 11 and the second winding axis 21 exhibit opposite polarity after magnetization, in the application, the current direction of the first spiral winding 1 is opposite to that of the second spiral winding 2. When the first spiral winding 1 is electrified, the magnetic induction line direction of the magnetic field formed in the first spiral winding 1 is opposite to that of the internal magnetic induction line of the first winding axis 11 after magnetization. Therefore, the magnetic field formed in the first spiral winding 1 and the magnetic field after magnetization of the first winding axis 11 cancel each other out, thereby reducing the magnetic field strength of the first winding axis 11 and realizing the demagnetization of the first winding axis 11.

[0040] When the second spiral winding 2 is electrified, the magnetic induction line direction of the magnetic field formed in the second spiral winding 2 is opposite to that of the internal magnetic induction line of the second winding axis 21 after magnetization. Therefore, the magnetic field formed in the second spiral winding 2 and the magnetic field after magnetization of the second winding axis 21 cancel each other out, thereby reducing the magnetic field strength of the second winding axis 21 and realizing the demagnetization of the second winding axis 21.

[0041] When the magnetic attraction of the first winding shaft 11 and the second winding shaft 21 to the spring needle is less than the elastic force of the spring needle to restore its shape, the first winding shaft 11 and the second winding shaft 21 will release the attracted spring needle, so that the spring needle restores its original shape. Therefore, the first spiral winding 1 and the second spiral winding 2 in the present application can change the position of the corresponding spring needle by attracting or releasing the corresponding spring needle through the first winding shaft 11 and the second winding shaft 21, thereby realizing the selection of the needle selector.

[0042] In one embodiment, initially, the first winding shaft 11 and the second winding shaft 21 do not attract the corresponding spring needle, and at this time the spring needle is in a non-working position; when selecting the needle, the first winding shaft 11 and the second winding shaft 21 attract the corresponding spring needle, so that the spring needle moves from the non-working position to the working position and performs the knitting operation; after the work is completed, the first spiral winding 1 and the second spiral winding 2 are powered on, and the first winding shaft 11 and the second winding shaft 21 release the corresponding spring needle, so that the spring needle returns to the non-working position and waits for the next knitting operation.

[0043] In another embodiment, initially, the first winding shaft 11 and the second winding shaft 21 attract the corresponding spring needle, and at this time the spring needle is in a non-working position; when selecting the needle, the first spiral winding 1 and the second spiral winding 2 are powered on, and the first winding shaft 11 and the second winding shaft 21 release the corresponding spring needle, so that the spring needle moves from the non-working position to the working position and performs the knitting operation; after the work is completed, the first spiral winding 1 and the second spiral winding 2 are powered off, and the first winding shaft 11 and the second winding shaft 21 attract the corresponding spring needle, so that the spring needle returns to the non-working position and waits for the next knitting operation.

[0044] The above two embodiments can be selected according to the actual production needs. The needle selector of the present application is suitable for glove machines, flat knitting machines, collar machines and other flat knitting machines. That is, the first spiral winding 1 and the second spiral winding 2 of the double-shaft winding structure of the present application can simultaneously attract or release the corresponding spring needle of the glove machine, the flat knitting machine, the collar machine and other flat knitting machines through the first winding shaft 11 and the second winding shaft 21, thereby realizing the selection of the needle of the glove machine, the flat knitting machine, the collar machine and other flat knitting machines.

[0045] Specifically, in the present embodiment, the first spiral winding 1 further has a first winding line 12, and the first winding line 12 is spirally wound on the outer periphery of the first winding shaft 11; the second spiral winding 2 further has a second winding line 22, and the second winding line 22 is spirally wound on the outer periphery of the second winding shaft 21. Since the first winding shaft 11 and the second winding shaft 21 exhibit opposite polarities after being magnetized, in the present application, the current flow direction of the first winding line 12 is opposite to that of the second winding line 22.

[0046] When the first winding 12 is energized, the magnetic field formed in the first winding 12 has a magnetic induction line direction opposite to the internal magnetic induction line direction of the first winding shaft 11 after magnetization, so the magnetic field formed in the first winding 12 and the magnetic field of the first winding shaft 11 after magnetization offset each other, thereby reducing the magnetic field strength of the first winding shaft 11 and achieving demagnetization of the first winding shaft 11.

[0047] When the second winding 22 is energized, the magnetic field formed in the second winding 22 has a magnetic induction line direction opposite to the internal magnetic induction line direction of the second winding shaft 21 after magnetization, so the magnetic field formed in the second winding 22 and the magnetic field of the second winding shaft 21 after magnetization offset each other, thereby reducing the magnetic field strength of the second winding shaft 21 and achieving demagnetization of the second winding shaft 21, and further allowing the first winding shaft 11 and the second winding shaft 21 to release the attracted spring needle, thereby achieving needle selection of the needle selector.

[0048] In actual implementation, the first winding 12 and the second winding 22 can be energized by the same power supply device, or can be energized by two power supply devices respectively. In order to make the structure of the needle selector more compact and reduce production cost, in the present application, the first winding 12 and the second winding 22 are preferably energized by the same power supply device.

[0049] In the present embodiment, the double-shaft winding structure further comprises a connecting wire 3, one end of which is connected to the tail end of the first winding 12 and the other end of which is connected to the head end of the second winding 22, so as to connect the first winding 12 and the second winding 22 in series. The head end of the first winding 12 is connected to the positive pole of the power supply circuit, and the tail end of the second winding 22 is connected to the negative pole of the power supply circuit, so as to form a closed loop, allowing the power supply circuit to simultaneously energize the first winding 12 and the second winding 22, thereby making the structure of the needle selector more compact and reducing production cost.

[0050] Further, in the present embodiment, the first winding 12, the connecting wire 3 and the second winding 22 can be made of the same enameled wire, i.e. the enameled wire is first wound spirally around the outer periphery of the first winding shaft 11 to form the first winding 12, then the enameled wire is pulled horizontally to the second winding shaft 21 and wound spirally around the outer periphery of the second winding shaft 21 to form the second winding 22, thereby realizing the series connection of the first winding 12 and the second winding 22, and finally the head end of the enameled wire is connected to the positive pole of the power supply circuit and the tail end of the enameled wire is connected to the negative pole of the power supply circuit, so as to form a closed loop, allowing the power supply circuit to simultaneously energize the first winding 12 and the second winding 22.

[0051] The manufacturing of the first winding 12 and the second winding 22 and the series connection of the first winding 12 and the second winding 22 can reduce the use of the enameled wire, thereby reducing the production cost, and make the series connection of the first winding 12 and the second winding 22 simpler, thereby making the implementation of the double-shaft winding structure simpler and more convenient and further improving the production efficiency.

[0052] Specifically, in the embodiment, the first winding 12 is spirally wound on the outer periphery of the first winding shaft 11 from bottom to top, and the second winding 22 is spirally wound on the outer periphery of the first winding shaft 11 from top to bottom, that is, the leading end of the first winding 12 is located at the bottom of the first winding 12, and the trailing end is located at the top of the first winding 12; the leading end of the second winding 22 is located at the top of the second winding 22, and the trailing end is located at the bottom of the second winding 22.

[0053] Therefore, when manufacturing the first winding 12 and the second winding 22 and series connecting the first winding 12 and the second winding 22, the enameled wire is spirally wound on the outer periphery of the first winding shaft 11 from bottom to top to form the first winding 12; then the enameled wire is transversely pulled to the second winding shaft 21 at the top of the first winding 12, and spirally wound on the outer periphery of the second winding shaft 21 from top to bottom to form the second winding 22, thereby realizing the series connection of the first winding 12 and the second winding 22; finally, the leading end of the enameled wire is connected to the positive electrode of the power supply circuit, and the trailing end is connected to the negative electrode of the power supply circuit, thereby forming a closed loop to enable the power supply circuit to pass current through the first winding 12 and the second winding 22 at the same time.

[0054] Since the leading end of the first winding 12 is located at the bottom of the first winding 12, and the trailing end of the second winding 22 is located at the bottom of the second winding 22, the operation of connecting the leading end of the first winding 12 to the positive electrode of the power supply circuit and connecting the trailing end of the second winding 22 to the negative electrode of the power supply circuit is easier to implement, thereby making the implementation of the double-shaft winding structure simpler and more convenient and further improving the production efficiency.

[0055] In addition, since the trailing end of the first winding 12 is located at the top of the first winding 12, and the leading end of the second winding 22 is located at the top of the second winding 22, the series connection of the first winding 12 and the second winding 22 is performed at the top of the first winding 12 and the top of the second winding 22, which can reduce the use of the enameled wire, thereby reducing the production cost, and make the series connection of the first winding 12 and the second winding 22 simpler, thereby making the implementation of the double-shaft winding structure simpler and more convenient and further improving the production efficiency.

[0056] Further, in the embodiment, the tail end of the second winding 22 extends to the same side as the head end of the first winding 12. Specifically, when the first winding 12, the connecting wire 3 and the second winding 22 are made of the same enameled wire, the enameled wire is first wound on the outer periphery of the first winding shaft 11 from bottom to top in a spiral shape to form the first winding 12; then the enameled wire is pulled horizontally to the second winding shaft 21 at the top of the first winding 12, and is wound on the outer periphery of the second winding shaft 21 from top to bottom in a spiral shape to form the second winding 22, thereby realizing the series connection of the first winding 12 and the second winding 22.

[0057] Finally, the enameled wire is pulled horizontally to the first winding shaft 11 at the bottom of the formed second winding 22, so that the tail end of the enameled wire is located on the same side as the head end, and thus the head end of the enameled wire is connected to the positive pole of the power supply circuit and the tail end is connected to the negative pole of the power supply circuit on the same side, which can make the connection of the enameled wire and the power supply circuit more simple and convenient, easy to implement, and the wiring of the power supply circuit more regular, thereby making the implementation of the double-shaft winding structure more simple and convenient and further improving the production efficiency.

[0058] Since the magnetic field formed in the energized coil has a magnetic induction line direction related to the winding direction of the current in the energized coil, in actual implementation, it is worth noting that when the first winding 12 is wound on the outer periphery of the first winding shaft 11 from bottom to top and the second winding 22 is wound on the outer periphery of the second winding shaft 21 from top to bottom, the current input direction in the first winding 12 and the second winding 22 needs to be designed according to the right-hand screw rule, so that the magnetic field formed in the first winding 12 and the second winding 22 has the above-mentioned direction of the magnetic induction line.

[0059] In the embodiment, the double-shaft winding structure further comprises a permanent magnet 4, which is arranged between the first spiral winding 1 and the second spiral winding 2, wherein the bottom end of the first winding shaft 11 of the first spiral winding 1 is in contact with the N pole of the permanent magnet 4, so that the first winding shaft 11 is magnetized by the permanent magnet 4 to have an N pole at the top end; the bottom end of the second winding shaft 21 of the second spiral winding 2 is in contact with the S pole of the permanent magnet 4, so that the second winding shaft 21 is magnetized by the permanent magnet 4 to have an S pole at the top end.

[0060] Therefore, after the first winding shaft 11 and the second winding shaft 21 are magnetized by the permanent magnet 4, the first winding shaft 11 extends the N pole of the permanent magnet 4 and the second winding shaft 21 extends the S pole of the permanent magnet 4, that is, the first winding shaft 11, the permanent magnet 4 and the second winding shaft 21 are regarded as a whole magnet, the first winding shaft 11 is the N pole of the magnet, and the second winding shaft 21 is the S pole of the magnet.

[0061] The magnetic flux direction of the magnet is from N pole to S pole outside the magnet, that is, outside the magnet, the magnetic flux is propagated from the top end of the first winding shaft 11 to the top end of the second winding shaft 21 in the air. When the first winding shaft 11 and the second winding shaft 21 adsorb the spring needle, the spring needle conducts the top end of the first winding shaft 11 and the top end of the second winding shaft 21, that is, the spring needle conducts the N pole and the S pole of the whole magnet.

[0062] Since the magnetic resistance of the spring needle is much smaller than that of the air, outside the magnet, the magnetic flux preferentially selects the path with the smallest magnetic resistance, so most of the magnetic flux is propagated from the N pole to the S pole in the spring needle, thereby not only preventing the magnetic flux loop outside the magnet from being scattered and reducing the mutual interference with the surrounding magnetic field, but also reducing the energy loss of the magnetic flux and enhancing the adsorption force of the first winding shaft 11 and the second winding shaft 21 on the spring needle, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0063] In the embodiment, the first winding shaft 11 and the second winding shaft 21 both extend in the vertical direction and are arranged at intervals. The N pole of the permanent magnet 4 is vertically extended upward after the first winding shaft 11 is magnetized by the N pole of the permanent magnet 4 by contacting the bottom end of the first winding shaft 11 with the N pole of the permanent magnet 4. The S pole of the permanent magnet 4 is vertically extended upward after the second winding shaft 21 is magnetized by the S pole of the permanent magnet 4 by contacting the bottom end of the second winding shaft 21 with the S pole of the permanent magnet 4.

[0064] The first contact surface 1131 is arranged at the top end of the first winding shaft 11, and the second contact surface 211 is arranged at the top end of the second winding shaft 21. Outside the whole magnet formed by the permanent magnet 4, the first winding shaft 11 and the second winding shaft 21, the magnetic flux is propagated from the first contact surface 1131 to the second contact surface 211 in the air.

[0065] When the first winding shaft 11 and the second winding shaft 21 adsorb the spring needle, the first contact surface 1131 and the second contact surface 211 simultaneously contact the spring needle, so that the first contact surface 1131 and the second contact surface 211 are conducted by the spring needle, and the magnetic flux propagated from the first contact surface 1131 to the second contact surface 211 is propagated in the spring needle, thereby not only reducing the dispersion of the magnetic flux and reducing the mutual interference with the surrounding magnetic field, but also reducing the energy loss of the magnetic flux and enhancing the adsorption force of the first winding shaft 11 and the second winding shaft 21 on the spring needle.

[0066] In the present application, the first contact surface 1131 and the second contact surface 211 are arranged on the same horizontal plane. As mentioned above, when the first winding shaft 11 and the second winding shaft 21 adsorb the spring needle, the first contact surface 1131 and the second contact surface 211 simultaneously contact the spring needle.

[0067] Therefore, in the present application, the first contact surface 1131 and the second contact surface 211 are arranged on the same horizontal plane, so that the first contact surface 1131 and the second contact surface 211 can better contact the spring needle when the first winding shaft 11 and the second winding shaft 21 adsorb the spring needle, so that the spring needle better conducts the first contact surface 1131 and the second contact surface 211, further reduces the dispersion of the magnetic induction lines, enhances the adsorption force of the first winding shaft 11 and the second winding shaft 21 on the spring needle, and further ensures the accuracy of needle selection and improves the production efficiency.

[0068] In the present embodiment, the double-shaft winding structure further comprises an isolation sheet 5 arranged between the first spiral winding 1 and the second spiral winding 2. Specifically, the isolation sheet 5 is arranged at the end of the first winding shaft 11 and the second winding shaft 21 away from the permanent magnet 4, i.e. the isolation sheet 5 is arranged at the position close to the top end of the first winding shaft 11 and the second winding shaft 21, so as to isolate the end of the first winding shaft 11 and the second winding shaft 21 away from the permanent magnet 4. It can be predicted that in actual implementation, the isolation sheet 5 can be made of non-magnetic material, such as copper, aluminum, stainless steel, etc., so that the isolation sheet 5 can isolate the first winding shaft 11 and the second winding shaft 21.

[0069] In the present application, the reason for isolating the end of the first winding shaft 11 and the second winding shaft 21 away from the permanent magnet 4 by the isolation sheet 5 is to prevent the end of the first winding shaft 11 and the second winding shaft 21 from directly contacting the permanent magnet 4, so as to prevent the magnetic induction lines from propagating from the position where the first winding shaft 11 and the second winding shaft 21 directly contact to the second winding shaft 21 outside the overall magnet formed by the permanent magnet 4, the first winding shaft 11 and the second winding shaft 21, thereby reducing the magnetic induction lines propagating from the spring needle, and further enhancing the adsorption force of the first winding shaft 11 and the second winding shaft 21 on the spring needle.

[0070] In the present embodiment, the first winding shaft 11 comprises a main body part 111, an inclined part 112 and an extension part 113, the main body part 111 is arranged in parallel and spaced apart from the second winding shaft 21, the extension part 113 is also arranged in parallel and spaced apart from the second winding shaft 21, the inclined part 112 is arranged at the top of the main body part 111, and the extension part 113 is arranged at the top of the inclined part 112, so as to connect the extension part 113 and the main body part 111 through the inclined part 112.

[0071] In the present application, the main body part 111, the inclined part 112 and the extension part 113 are of an integrated structure, so that after the first winding shaft 11 is magnetized by the permanent magnet 4 through the contact between the bottom end of the main body part 111 and the N pole of the permanent magnet 4, the top end of the extension part 113 is N pole.

[0072] The first contact surface 1131 is arranged at the top of the extension 113, and the first contact surface 1131 is arranged at the same horizontal plane with the second contact surface 211 by extending vertically upward of the top of the inclined portion 112 through the extension 113, so that the first contact surface 1131 and the second contact surface 211 can better contact the pogo pin.

[0073] Since the size of the pogo pin is small, in order to prevent the first contact surface 1131 and the second contact surface 211 from failing to simultaneously contact different positions of the pogo pin, in the present application, the inclined portion 112 is inclined toward the direction of the second winding shaft 21 at the top of the main body portion 111, so that the distance between the extension 113 and the second winding shaft 21 is smaller than the distance between the main body portion 111 and the second winding shaft 21, and thus the distance between the first contact surface 1131 and the second contact surface 211 can be reduced, and it is ensured that the first contact surface 1131 and the second contact surface 211 can contact different positions of the pogo pin.

[0074] In actual implementation, the isolation sheet 5 can be arranged between the extension 113 and the second winding shaft 21, so that the isolation sheet 5 isolates the extension 113 from the second winding shaft 21, thereby isolating the first winding shaft 11 from the second winding shaft 21. Since the distance between the extension 113 and the second winding shaft 21 is smaller than the distance between the main body portion 111 and the second winding shaft 21, compared with arranging the isolation sheet 5 between the main body portion 111 and the second winding shaft 21, arranging the isolation sheet 5 between the extension 113 and the second winding shaft 21 can reduce the thickness of the isolation sheet 5, thereby reducing the production cost.

[0075] The above-described content can be implemented alone or in various combinations, and these variants are within the protection scope of the present application.

[0076] It should be noted that, in the present document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement “including a…” does not exclude the presence of another same element in the process, method, article or equipment including the element.

[0077] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not limit it. Although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A double shaft winding structure of a needle selector, characterized by: The double-shaft winding structure comprises a first spiral winding (1) and a second spiral winding (2), the first spiral winding (1) has a first winding shaft (11), the second spiral winding (2) has a second winding shaft (21), at least part of the first winding shaft (11) is arranged in parallel with at least part of the second winding shaft (21), the top end of the first winding shaft (11) is N-pole after magnetization, the top end of the second winding shaft (21) is S-pole after magnetization, the current direction of the first spiral winding (1) is opposite to that of the second spiral winding (2), the first spiral winding (1) is de-magnetized after being electrified, and the second spiral winding (2) is de-magnetized after being electrified.

2. A dual shaft winding structure for a needle selector as defined in claim 1, characterized in that: The first spiral winding (1) further has a first winding wire (12) which is spirally wound on the outer periphery of the first winding shaft (11), and the second spiral winding (2) further has a second winding wire (22) which is spirally wound on the outer periphery of the second winding shaft (21).

3. A dual shaft winding structure for a needle selector as defined in claim 2, characterized in that: The first winding wire (12) is connected with the positive pole of the power supply circuit, the tail end of the second winding wire (22) is connected with the negative pole of the power supply circuit, and the double-shaft winding structure further comprises a connecting wire (3) for connecting the first winding wire (12) and the second winding wire (22) in series, one end of the connecting wire (3) is connected with the tail end of the first winding wire (12), and the other end is connected with the head end of the second winding wire (22).

4. A dual shaft winding structure for a needle selector as defined in claim 3, characterized in that: The first winding wire (12), the second winding wire (22) and the connecting wire (3) are the same enameled wire.

5. A dual shaft winding structure for a needle selector as defined in claim 2, characterized in that: The first winding wire (12) is spirally wound on the outer periphery of the first winding shaft (11) from bottom to top, and the second winding wire (22) is spirally wound on the outer periphery of the first winding shaft (11) from top to bottom.

6. A dual shaft winding structure for a needle selector as defined in claim 5, characterized in that: The tail end of the second winding wire (22) extends to the side where the head end of the first winding wire (12) is located, so that the tail end of the second winding wire (22) and the head end of the first winding wire (12) are wired on the same side.

7. A dual shaft winding structure for a needle selector as defined in claim 1, characterized in that: The double-shaft winding structure further comprises a permanent magnet (4) arranged between the first spiral winding (1) and the second spiral winding (2), the bottom end of the first winding shaft (11) is in contact with the N-pole of the permanent magnet (4), and the bottom end of the second winding shaft (21) is in contact with the S-pole of the permanent magnet (4).

8. A dual shaft winding structure for a needle selector as defined in claim 1, characterized in that: The double-shaft winding structure further comprises an isolation sheet (5) arranged between the first spiral winding (1) and the second spiral winding (2), and the isolation sheet (5) isolates the first winding shaft (11) from the second winding shaft (21).

9. A dual shaft winding structure for a needle selector as defined in claim 1, characterized in that: The top end of the first winding shaft (11) is provided with a first contact surface (1131), the top end of the second winding shaft (21) is provided with a second contact surface (211), and the first contact surface (1131) and the second contact surface (211) are on the same horizontal plane.

10. A dual shaft winding structure for a needle selector as defined in claim 9, characterized in that: The first rotation shaft (11) comprises a main body part (111) arranged in parallel with the second rotation shaft (21) at intervals, an inclined part (112) inclined to the second rotation shaft (21), and an extension part (113) arranged in parallel with the second rotation shaft (21) at intervals, the inclined part (112) is arranged at the top of the main body part (111), the extension part (113) is arranged at the top of the inclined part (112), and the first contact surface (1131) is arranged at the top of the extension part (113).

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