A method for making and using a bipolar magnetic rod structure

Abstract

The present invention discloses a method for making and using a bipolar magnetic bar structure. It relates to the technical field of needle selectors. The present application specifically includes step S1: fitting the bottom end of the first magnetic bar to the N pole of a permanent magnet, and fitting the bottom end of the second magnetic bar to the S pole of the permanent magnet; step S2: arranging a first coil on the first magnetic bar, and arranging a second coil on the second magnetic bar, so that the flow directions of the first coil and the second coil are opposite. The present invention fits the bottom end of the first magnetic bar to the N pole of the permanent magnet, and the bottom end of the second magnetic bar to the S pole of the permanent magnet, so that the first magnetic bar is an N pole, and the second magnetic bar is an S pole. When the first magnetic bar and the second magnetic bar adsorb a spring needle, the spring needle conducts the top end of the first magnetic bar with the top end of the second magnetic bar, so that the magnetic flux line propagates in the spring needle, thereby reducing the magnetic field interference with the surrounding magnetic bars and reducing the energy loss of the magnetic flux line, thereby ensuring the accuracy of needle selection and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of needle selectors, and in particular to a method for manufacturing a bipolar magnetic rod structure and Directions: Background Art

[0002] Most of the sweaters people wear daily are made of yarns with different colors. During the production process, when one color of yarn is being knitted, the yarns of other colors need to stop knitting. Therefore, the yarns of different colors need to be selected and stopped constantly during the knitting process. At present, the market generally uses computer-controlled electromagnetic needle selection technology to control the knitting machine to select needles, thereby realizing the rearrangement of the sweater colors. Through the frequent operation of the needle selector, sweaters of various colors can be formed.

[0003] At present, the needle selectors of knitting machines mostly adopt electromagnetic needle selectors. Electromagnetic needle selectors are more and more widely used due to their simple structure and convenient use. Electromagnetic needle selectors are usually provided with a number of magnetic bars corresponding to the spring needles of the knitting machine. By magnetizing or demagnetizing the corresponding magnetic bars, the corresponding elastic needles are adsorbed or released, thereby achieving the purpose of needle selection.

[0004] In the prior art, for a single spring needle, the number of needle selector magnetic bars used is also single, and with a single magnetic pole, the magnetic flux loop is stray and the magnetic fields interfere with each other greatly. When the magnetic bar attracts or releases the corresponding spring needle, it is easy to produce a large magnetic force effect on the surrounding magnetic bars and spring needles, which may lead to needle selection errors, and then cause weaving errors, affecting production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a method for manufacturing and using a bipolar magnetic bar structure to address the deficiencies of the above-mentioned prior art, which can reduce the magnetic interference between the magnetic bars, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0006] The present invention proposes a method for manufacturing a bipolar magnetic rod structure, the method comprising the following steps: Step S1: Fit the bottom end of the first magnetic bar to the N pole of the permanent magnet, and fit the bottom end of the second magnetic bar to the S pole of the permanent magnet, so that the top end of the first magnetic bar after being magnetized is the N pole, and the top end of the second magnetic bar after being magnetized is the S pole; Step S2: a first coil is arranged on the first magnetic bar, and a second coil is arranged on the second magnetic bar, so that the current flow directions of the first coil and the second coil are opposite, the first coil being energized demagnetizes the first magnetic bar, and the second coil being energized demagnetizes the second magnetic bar.

[0007] Further, step S1 includes: The first magnetic bar and the second magnetic bar are spaced apart on the magnetic bar base, and the permanent magnet is disposed between the first magnetic bar and the second magnetic bar, so that the bottom end of the first magnetic bar is aligned with the N pole of the permanent magnet, and the bottom end of the second magnetic bar is aligned with the S pole of the permanent magnet.

[0008] Further, step S1 includes: Step S1.1: placing the permanent magnet in the third fixing cavity of the magnetic bar base; Step S1.2: Insert the bottom of the first magnetic bar into the first fixed cavity of the magnetic bar base, insert the bottom of the second magnetic bar into the second fixed cavity of the magnetic bar base, the third fixed cavity is arranged between the first fixed cavity and the second fixed cavity, and one end of the third fixed cavity is provided with a first opening connected to the first fixed cavity, and the other end is provided with a second opening connected to the second fixed cavity, so that the bottom end of the first magnetic bar is in contact with the N pole of the permanent magnet through the first opening, and the bottom end of the second magnetic bar is in contact with the S pole of the permanent magnet through the second opening.

[0009] Furthermore, the bottom of the first magnetic bar is plugged into the first fixed cavity of the magnetic bar base, and the bottom of the second magnetic bar is plugged into the second fixed cavity of the magnetic bar base, comprising: The first contact surface of the first magnetic bar and the second contact surface of the second magnetic bar are located on the same horizontal plane, the first contact surface is arranged on the top of the first magnetic bar, and the second contact surface is arranged on the top of the second magnetic bar.

[0010] Furthermore, the bottom of the first magnetic bar is plugged into the first fixed cavity of the magnetic bar base, and the bottom of the second magnetic bar is plugged into the second fixed cavity of the magnetic bar base, comprising: The first limiting plate of the first magnetic bar is made to abut against the top of the permanent magnet, and the second limiting plate of the second magnetic bar is made to abut against the top of the permanent magnet. The first limiting plate is arranged on the side of the first magnetic bar close to the second magnetic bar, and the second limiting plate is arranged on the side of the second magnetic bar close to the first magnetic bar.

[0011] Furthermore, step S1 further includes: Step S1.3: a spacer is provided between the first magnetic bar and the second magnetic bar, so that the spacer isolates an end of the first magnetic bar away from the permanent magnet from an end of the second magnetic bar away from the permanent magnet.

[0012] Further, step S2 includes: Step S2.1: Winding the enameled wire in a spiral shape from bottom to top around the outer circumference of the first magnetic bar to form the first coil; Step S2.2: pulling the enameled wire horizontally to the second magnetic bar at the top of the formed first coil; Step S2.3: Wrap the enameled wire in a spiral shape from top to bottom around the outer circumference of the second magnetic bar to form the second coil.

[0013] Furthermore, step S2 further includes: Step S2.4: pulling the enameled wire horizontally to the first magnetic bar at the bottom of the formed second coil, so that the tail end of the second coil and the head end of the first coil are routed in the routing groove on one side of the magnetic bar base; Step S2.5: Connect the head end of the first coil to the positive electrode of the power supply circuit, and connect the tail end of the second coil to the negative electrode of the power supply circuit.

[0014] The present invention also proposes a method for using the bipolar magnetic rod structure, the method comprising the following steps: Provided is a bipolar magnetic bar structure, comprising a first magnetic bar and a second magnetic bar arranged at intervals, a permanent magnet arranged between the first magnetic bar and the second magnetic bar, a first coil arranged on the first magnetic bar, and a second coil arranged on the second magnetic bar, wherein the end of the first magnetic bar after being magnetized is an N pole, and the top end of the second magnetic bar after being magnetized is an S pole; The target soft magnet is adsorbed by the first magnetic bar and the second magnetic bar at the same time, and the target soft magnet is adsorbed on the top of the first magnetic bar and the second magnetic bar to form a closed magnetic line of force, so that the target soft magnet stops at the adsorption position; The first magnetic bar is demagnetized by energizing the first coil, and the second magnetic bar is demagnetized by energizing the second coil, so that the first magnetic bar and the second magnetic bar release the adsorbed target soft magnet, and the target magnet returns to the non-adsorbed position under the action of its own elastic force.

[0015] Furthermore, the bipolar magnetic bar structure is provided, comprising the following steps: The first magnetic bar and the second magnetic bar are spaced apart on the magnetic bar base, and the permanent magnet is disposed between the first magnetic bar and the second magnetic bar, so that the bottom end of the first magnetic bar is aligned with the N pole of the permanent magnet, and the bottom end of the second magnetic bar is aligned with the S pole of the permanent magnet.

[0016] The manufacturing method and use method of a bipolar magnetic rod structure proposed by the present invention have the following beneficial effects: (1) In this manufacturing method, the bottom end of the first magnetic bar is fitted with the N pole of the permanent magnet, and the bottom end of the second magnetic bar is fitted with the S pole of the permanent magnet, so that the top end of the first magnetic bar is the N pole after being magnetized, and the top end of the second magnetic bar is the S pole after being magnetized. At the same time, the first magnetic bar and the second magnetic bar are arranged at intervals. When the first magnetic bar and the second magnetic bar adsorb the spring needle, the spring needle connects the top end of the first magnetic bar with the top end of the second magnetic bar, so that the magnetic flux line propagates in the spring needle, thereby reducing the magnetic field interference with the surrounding magnetic bars and reducing the energy loss of the magnetic flux line, thereby ensuring the accuracy of needle selection and improving production efficiency; (2) In this manufacturing method, a first coil is arranged on the first magnetic rod, and a second coil is arranged on the second magnetic rod, and the current flow directions of the first coil and the second coil are opposite. The first magnetic rod is demagnetized by energizing the first coil, and the second magnetic rod is demagnetized by energizing the second coil, so that the first magnetic rod and the second magnetic rod release the adsorbed spring needle at the same time to achieve needle selection; (3) In this manufacturing method, the first magnetic bar and the second magnetic bar are arranged on the magnetic bar base at intervals, and the permanent magnet is arranged between the first magnetic bar and the second magnetic bar, so that the N pole of the permanent magnet fits with the bottom end of the first magnetic bar and the S pole fits with the bottom end of the second magnetic bar, thereby magnetizing through the permanent magnet, so that the first magnetic bar and the second magnetic bar are magnetized, and the top end of the first magnetic bar is the N pole, and the top end of the second magnetic bar is the S pole, so that the magnetic attraction generated by the top end of the first magnetic bar and the top end of the second magnetic bar adsorbs the corresponding spring pin; (4) In this manufacturing method, the permanent magnet is arranged in the third fixed cavity of the magnetic rod base, and the third fixed cavity is located between the first fixed cavity and the second fixed cavity, and one end of the third fixed cavity is provided with a first opening connected to the first fixed cavity, and the other end is provided with a second opening connected to the second fixed cavity, so that the N pole of the permanent magnet is attached to the bottom end of the first magnetic rod through the first opening, and the S pole is attached to the bottom end of the second magnetic rod through the second opening, thereby making the first magnetic rod, the permanent magnet and the second magnetic rod form a U-shaped integral magnet; (5) In the present manufacturing method, a spacer is provided between the first magnetic bar and the second magnetic bar, and the spacer is used to isolate the ends of the first magnetic bar and the second magnetic bar away from the permanent magnet, thereby preventing the ends of the first magnetic bar and the second magnetic bar away from the permanent magnet from directly contacting each other, thereby preventing the magnetic flux lines from propagating from the position where the first magnetic bar and the second magnetic bar are in direct contact with each other outside the integral magnet formed by the permanent magnet, the first magnetic bar and the second magnetic bar to the second magnetic bar, thereby reducing the magnetic flux lines propagating from the spring needle, thereby enhancing the adsorption force of the first magnetic bar and the second magnetic bar on the spring needle; (6) In this manufacturing method, the first limiting plate and the second limiting plate are both in contact with the top of the permanent magnet. On the one hand, the permanent magnet is limited by the first limiting plate and the second limiting plate, and the permanent magnet is fixed in the third fixed cavity; on the other hand, the contact area between the first magnetic bar and the second magnetic bar and the permanent magnet is increased, thereby enhancing the magnetization effect of the first magnetic bar and the second magnetic bar, and further enhancing the adsorption force of the first magnetic bar and the second magnetic bar on the spring needle, thereby ensuring the accuracy of needle selection; (7) This manufacturing method sets the first contact surface at the top of a magnetic rod and the second contact surface at the top of the second magnetic rod on the same horizontal plane, so that the first contact surface and the second contact surface can better contact the spring needle, so that the spring needle can better connect the first contact surface with the second contact surface, further reduce the dispersion of magnetic flux lines, enhance the adsorption force of the first winding shaft and the second winding shaft on the spring needle, thereby ensuring the accuracy of needle selection and improving production efficiency; (8) The manufacturing method uses the same enameled wire to manufacture the first coil and the second coil, and connects the tail end of the first coil and the head end of the second coil in series, so that the power supply circuit can pass current to the first coil and the second coil at the same time, thereby making the implementation of the method simpler and more convenient, and reducing the production cost; (9) In this manufacturing method, the head end of the first coil and the tail end of the second coil are routed through the routing groove, so that the head end of the first coil and the tail end of the second coil are limited by the routing groove, so that the routing of the first coil and the second coil is more regular, further making the implementation of this method simpler and more convenient, and improving production efficiency; (10) The method of use uses a first magnetic rod whose top end is an N pole after being magnetized, and a second magnetic rod whose top end is an S pole after being magnetized, to simultaneously adsorb the target soft magnet, thereby forming closed magnetic flux lines in the permanent magnet, the first magnetic rod, the second magnetic rod, and the target soft magnet. This can reduce the dispersion of the magnetic flux lines and reduce the mutual interference with the surrounding magnetic field, and can also reduce the energy loss of the magnetic flux lines, thereby enhancing the adsorption force of the first magnetic rod and the second magnetic rod on the target soft magnet, making the movement of the target soft magnet between the non-working position and the working position more stable and accurate, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In the accompanying drawings, like reference numerals are used to represent like elements.

[0018] Figure 1 This is a structural schematic diagram of a method for manufacturing a bipolar magnetic bar structure according to an embodiment of the present invention, in which a first magnetic bar and a second magnetic bar are attached to a permanent magnet; Figure 2This is a structural schematic diagram of a method for manufacturing a bipolar magnetic bar structure according to an embodiment of the present invention, in which a first magnetic bar, a second magnetic bar and a permanent magnet are installed on a magnetic bar base; Figure 3 A schematic structural diagram of a first magnetic bar in a method for manufacturing a bipolar magnetic bar structure according to an embodiment of the present invention; Figure 4 A schematic structural diagram of a second magnetic bar in a method for manufacturing a bipolar magnetic bar structure according to an embodiment of the present invention; Figure 5 A schematic structural diagram of a magnetic bar base in a method for manufacturing a bipolar magnetic bar structure according to an embodiment of the present invention; Figure 6 A schematic flow chart of a method for manufacturing a bipolar magnetic rod structure according to an embodiment of the present invention; Figure 7 The figure is a schematic diagram of the principle of a method for using a bipolar magnetic rod structure according to an embodiment of the present invention.

[0019] In the figure: 1. first magnetic rod; 11. first limiting plate; 12. first contact surface; 2. second magnetic rod; 21. second limiting plate; 22. second contact surface; 3. permanent magnet; 4. first coil; 5. second coil; 6. magnetic rod base; 61. first fixed cavity; 62. second fixed cavity; 63. third fixed cavity; 64. wiring groove; 7. isolation plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 to Figure 7 A method for manufacturing a bipolar magnetic bar structure according to an embodiment of the present invention comprises the following steps: Step S1: fit the bottom end of the first magnetic bar 1 to the N pole of the permanent magnet 3, and fit the bottom end of the second magnetic bar 2 to the S pole of the permanent magnet 3, so that the top end of the first magnetic bar 1 after magnetization is the N pole, and the top end of the second magnetic bar 2 after magnetization is the S pole; Step S2: a first coil 4 is arranged on the first magnetic bar 1, and a second coil 5 is arranged on the second magnetic bar 2, so that the current flow directions of the first coil 4 and the second coil 5 are opposite, the energized first coil 4 demagnetizes the first magnetic bar 1, and the energized second coil 5 demagnetizes the second magnetic bar 2.

[0022] In the present manufacturing method, the bottom end of the first magnetic bar 1 is fitted with the N pole of the permanent magnet 3, and the bottom end of the second magnetic bar 2 is fitted with the S pole of the permanent magnet 3, and the first magnetic bar 1 and the second magnetic bar 2 are spaced apart by the spacing of the permanent magnet 3; the permanent magnet 3 is used for magnetization, so that the first magnetic bar 1 and the second magnetic bar 2 are magnetized, and the top end of the first magnetic bar 1 is the N pole, and the top end of the second magnetic bar 2 is the S pole, so that the magnetic attraction generated by the top end of the first magnetic bar 1 and the top end of the second magnetic bar 2 adsorbs the corresponding spring pins.

[0023] After the first magnetic bar 1 and the second magnetic bar 2 are magnetized by the permanent magnet 3, it is equivalent to that the first magnetic bar 1 extends the N pole of the permanent magnet 3, and the second magnetic bar 2 extends the S pole of the permanent magnet 3, that is, the first magnetic bar 1, the permanent magnet 3 and the second magnetic bar 2 form an integral magnet, the first magnetic bar 1 is the N pole of the magnet, and the second magnetic bar 2 is the S pole of the magnet.

[0024] Since the direction of the magnetic flux lines of the magnet is from the N pole to the S pole outside the magnet and from the S pole to the N pole inside the magnet, in the prior art, for a single spring needle, the needle selector magnetic bars used all have the same magnetic pole.

[0025] Therefore, outside the magnetic bar, the magnetic flux lines are propagated from the N pole to the S pole in the air. The magnetic flux lines propagating in the air have stray loops and large energy losses, which can easily interfere with the magnetic fields of the surrounding magnetic bars and reduce the adsorption force of the magnetic bars on the corresponding spring needles, which may lead to needle selection errors, knitting errors, and affect production efficiency.

[0026] In the present application, the first magnetic bar 1, the permanent magnet 3 and the second magnetic bar 2 form an integral magnet, the first magnetic bar 1 is the N pole of the magnet, and the second magnetic bar 2 is the S pole of the magnet. The direction of the magnetic flux lines of the magnet is from the N pole to the S pole outside the magnet, that is, outside the magnet, the magnetic flux lines are propagated from the top of the first magnetic bar 1 to the top of the second magnetic bar 2 in the air. When the first magnetic bar 1 and the second magnetic bar 2 adsorb the corresponding spring pins, the spring pins connect the top of the first magnetic bar 1 with the top of the second magnetic bar 2, that is, the spring pins connect the N pole and the S pole of the integral magnet.

[0027] In this embodiment, the first magnetic bar 1, the second magnetic bar 2 and the spring needle are all made of soft magnetic materials. Since the magnetic resistance of the spring needle is much smaller than that of the air, the magnetic flux lines preferentially select the path with the smallest magnetic resistance outside the magnet, so most of the magnetic flux lines are transmitted from the N pole to the S pole in the spring needle, thereby preventing the magnetic flux lines outside the magnet from being scattered and reducing mutual interference with the surrounding magnetic field, and reducing the energy loss of the magnetic flux lines, enhancing the adsorption force of the first magnetic bar 1 and the second magnetic bar 2 on the spring needle, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0028] In the manufacturing method, a first coil 4 is provided on the first magnetic bar 1, and a second coil 5 is provided on the second magnetic bar 2. Since the first magnetic bar 1 and the second magnetic bar 2 are made of soft magnetic materials, after the first magnetic bar 1 and the second magnetic bar 2 are magnetized, they can simultaneously generate magnetic attraction to the corresponding spring pins, so that the spring pins move and produce elastic deformation, thereby adsorbing the spring pins on the top ends of the first magnetic bar 1 and the second magnetic bar 2, and achieving the attraction of the corresponding spring pins.

[0029] Since the first magnetic bar 1 and the second magnetic bar 2 show opposite polarities after being magnetized, in the present application, the current flow directions of the first coil 4 and the second coil 5 are opposite, so that when the first coil 4 is energized, the magnetic field formed in the first coil 4 has a magnetic flux line direction opposite to the internal magnetic flux line direction of the first magnetic bar 1 after magnetization. Therefore, the magnetic field formed in the first coil 4 and the magnetic field of the first magnetic bar 1 after magnetization cancel each other out, thereby reducing the magnetic field strength of the first magnetic bar 1 and achieving demagnetization of the first magnetic bar 1.

[0030] When the second coil 5 is energized, the magnetic field formed in the second coil 5 has a magnetic flux line direction opposite to the internal magnetic flux line direction of the second magnetic bar 2 after magnetization. Therefore, the magnetic field formed in the second coil 5 and the magnetic field of the second magnetic bar 2 after magnetization cancel each other out, thereby reducing the magnetic field strength of the second magnetic bar 2 and achieving demagnetization of the second magnetic bar 2.

[0031] When the magnetic attraction of the first magnetic bar 1 and the second magnetic bar 2 on the spring pin is less than the elastic force of the spring pin to restore its own deformation, the first magnetic bar 1 and the second magnetic bar 2 release the adsorbed spring pin to restore the spring pin to its original shape. Therefore, the double magnetic bar needle selection method realizes needle selection by adsorbing or releasing the corresponding spring pin by the first magnetic bar 1 and the second magnetic bar 2, so that the position of the corresponding spring pin changes.

[0032] In this embodiment, step S1 includes: The first magnetic bar 1 and the second magnetic bar 2 are spaced apart on the magnetic bar base 6, and the permanent magnet 3 is arranged between the first magnetic bar 1 and the second magnetic bar 2, so that the bottom end of the first magnetic bar 1 is aligned with the N pole of the permanent magnet 3, and the bottom end of the second magnetic bar 2 is aligned with the S pole of the permanent magnet 3.

[0033] In the present manufacturing method, the first magnetic bar 1 and the second magnetic bar 2 are spaced apart on the magnetic bar base 6, and the permanent magnet 3 is arranged between the first magnetic bar 1 and the second magnetic bar 2, so that the N pole of the permanent magnet fits with the bottom end of the first magnetic bar 1, and the S pole fits with the bottom end of the second magnetic bar 2, so that the permanent magnet 3 is used for magnetization, so that the first magnetic bar 1 and the second magnetic bar 2 are magnetized, and the top end of the first magnetic bar 1 is the N pole, and the top end of the second magnetic bar 2 is the S pole, so that the magnetic attraction generated by the top end of the first magnetic bar 1 and the top end of the second magnetic bar 2 adsorbs the corresponding spring pins.

[0034] Specifically, in this embodiment, step S1 includes: Step S1.1: placing the permanent magnet 3 in the third fixing cavity 63 of the magnetic bar base 6; Step S1.2: Insert the bottom of the first magnetic bar 1 into the first fixed cavity 61 of the magnetic bar base 6, insert the bottom of the second magnetic bar 2 into the second fixed cavity 62 of the magnetic bar base 6, and the third fixed cavity 63 is arranged between the first fixed cavity 61 and the second fixed cavity 62, and one end of the third fixed cavity 63 is provided with a first opening connected to the first fixed cavity 61, and the other end is provided with a second opening connected to the second fixed cavity 62, so that the bottom end of the first magnetic bar 1 is in contact with the N pole of the permanent magnet 3 through the first opening, and the bottom end of the second magnetic bar 2 is in contact with the S pole of the permanent magnet 3 through the second opening.

[0035] In the present application, the magnetic bar base 6 is provided with a first fixed cavity 61, a second fixed cavity 62 and a third fixed cavity 63, the first fixed cavity 61 and the second fixed cavity 62 are arranged at intervals, and the third fixed cavity 63 is arranged between the first fixed cavity 61 and the second fixed cavity 62. A first opening is provided at one end of the third fixed cavity 63, and the third fixed cavity 63 is connected with the first fixed cavity 61 through the first opening; a second opening is provided at the other end of the third fixed cavity 63, and the third fixed cavity 63 is connected with the second fixed cavity 62 through the second opening.

[0036] In the present manufacturing method, when installing the first magnetic bar 1, the second magnetic bar 2 and the permanent magnet 3 on the magnetic bar base 6, the permanent magnet 3 is first set in the third fixed cavity 63, and then the bottom of the first magnetic bar 1 is inserted into the first fixed cavity 61, and the bottom of the second magnetic bar 2 is inserted into the second fixed cavity 62, so that the first magnetic bar 1 is fixed by the first fixed cavity 61, the second magnetic bar 2 is fixed by the second fixed cavity 62, and the permanent magnet 3 is fixed by the third fixed cavity 63, so that the first magnetic bar 1 and the second magnetic bar 2 are spaced apart on the magnetic bar base 6, and the permanent magnet 3 is set between the first magnetic bar 1 and the second magnetic bar 2.

[0037] Since the N pole and S pole of the permanent magnet 3 are respectively arranged at the two ends of the permanent magnet 3, the bottom of the first magnetic bar 1 is inserted into the first fixed cavity 61, the bottom of the second magnetic bar 2 is inserted into the second fixed cavity 62, and when the permanent magnet 3 is arranged in the third fixed cavity 63, the N pole of the permanent magnet 3 is at one end of the third fixed cavity 63, and fits with the bottom end of the first magnetic bar 1 through the first opening; the S pole of the permanent magnet 3 is at the other end of the third fixed cavity 63, and fits with the bottom of the second magnetic bar 2 through the second opening, so that the first magnetic bar 1, the permanent magnet 3 and the second magnetic bar 2 form a U-shaped integral magnet.

[0038] Therefore, when the corresponding spring needles are simultaneously adsorbed by the first magnetic bar 1 and the second magnetic bar 2, the spring needles conduct the N pole and the S pole of the U-shaped integral magnet, so that most of the magnetic flux lines are transmitted from the spring needles, which can not only increase the adsorption force on the spring needles, but also reduce the magnetic field interference of multiple magnetic bars, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0039] Specifically, in this embodiment, the bottom of the first magnetic bar 1 is inserted into the first fixed cavity 61 of the magnetic bar base 6, and the bottom of the second magnetic bar 2 is inserted into the second fixed cavity 62 of the magnetic bar base 6, including: The first contact surface 12 of the first magnetic bar 1 and the second contact surface 22 of the second magnetic bar 2 are located on the same horizontal plane. The first contact surface 12 is arranged on the top of the first magnetic bar 1 , and the second contact surface 22 is arranged on the top of the second magnetic bar 2 .

[0040] In the present application, a first contact surface 12 is provided at the top of the first magnetic bar 1, and a second contact surface 22 is provided at the top of the second magnetic bar 2. Outside the integral magnet formed by the permanent magnet 3, the first magnetic bar 1 and the second magnetic bar 2, magnetic flux lines propagate from the first contact surface 12 to the second contact surface 22 in the air.

[0041] When the first magnetic bar 1 and the second magnetic bar 2 adsorb the spring pin, the first contact surface 12 and the second contact surface 22 are in contact with the spring pin at the same time, so that the first contact surface 12 and the second contact surface 22 are connected through the spring pin, so that the magnetic flux lines transmitted from the first contact surface 12 to the second contact surface 22 are transmitted in the spring pin, thereby reducing the dispersion of the magnetic flux lines and the mutual interference with the surrounding magnetic field, and reducing the energy loss of the magnetic flux lines, thereby enhancing the adsorption force of the first magnetic bar 1 and the second magnetic bar 2 on the spring pin.

[0042] In the present manufacturing method, when the bottom of the first magnetic bar 1 is inserted into the first fixed cavity 61 of the magnetic bar base 6 and the bottom of the second magnetic bar 2 is inserted into the second fixed cavity 62 of the magnetic bar base 6, the first contact surface 12 at the top of the first magnetic bar 1 and the second contact surface 22 at the top of the second magnetic bar 2 are located on the same horizontal plane. As mentioned above, when the first magnetic bar 1 and the second magnetic bar 2 adsorb the spring pin, the first contact surface 12 and the second contact surface 22 are in contact with the spring pin at the same time.

[0043] Therefore, in the present application, the first contact surface 12 and the second contact surface 22 are located on the same horizontal plane so that when the first magnetic bar 1 and the second magnetic bar 2 adsorb the spring needle, the first contact surface 12 and the second contact surface 22 can better contact with the spring needle, so that the spring needle can better connect the first contact surface 12 and the second contact surface 22, further reduce the dispersion of the magnetic lines of force, enhance the adsorption force of the first magnetic bar 1 and the second magnetic bar 2 on the spring needle, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0044] Specifically, in this embodiment, the bottom of the first magnetic bar 1 is inserted into the first fixed cavity 61 of the magnetic bar base 6, and the bottom of the second magnetic bar 2 is inserted into the second fixed cavity 62 of the magnetic bar base 6, including: The first limiting plate 11 of the first magnetic bar 1 is abutted against the top of the permanent magnet 3, and the second limiting plate 21 of the second magnetic bar 2 is abutted against the top of the permanent magnet 3. The first limiting plate 11 is arranged on the side of the first magnetic bar 1 close to the second magnetic bar 2, and the second limiting plate 21 is arranged on the side of the second magnetic bar 2 close to the first magnetic bar 1.

[0045] In the present application, a first limiting plate 11 is provided on the first magnetic bar 1, and the first limiting plate 11 is provided at one end of the first magnetic bar 1 close to the second magnetic bar 2; a second limiting plate 21 is provided on the second magnetic bar 2, and the second limiting plate 21 is provided at one end of the second magnetic bar 2 close to the first magnetic bar 1.

[0046] In the present manufacturing method, when the bottom of the first magnetic bar 1 is inserted into the first fixed cavity 61 of the magnetic bar base 6 and the bottom of the second magnetic bar 2 is inserted into the second fixed cavity 62 of the magnetic bar base 6, the first limiting plate 11 and the second limiting plate 21 are both in contact with the top of the permanent magnet 3, thereby limiting the permanent magnet 3 by the first limiting plate 11 and the second limiting plate 21, and fixing the permanent magnet 3 in the third fixed cavity 63.

[0047] In addition, when the first magnetic bar 1, the second magnetic bar 2 and the permanent magnet 3 are installed on the magnetic bar base 6, at the N end of the permanent magnet 3, the first limiting plate 11 abuts against the top of the permanent magnet 3, so that the contact area between the first magnetic bar 1 and the permanent magnet 3 can be increased; at the S end of the permanent magnet 3, the second limiting plate 21 abuts against the top of the permanent magnet 3, so that the contact area between the second magnetic bar 2 and the permanent magnet 3 can be increased, thereby enhancing the magnetization effect of the first magnetic bar 1 and the second magnetic bar 2, and then enhancing the adsorption force of the first magnetic bar 1 and the second magnetic bar 2 on the spring needle, thereby ensuring the accuracy of needle selection.

[0048] Furthermore, in this embodiment, step S1 further includes: Step S1.3: a spacer 7 is arranged between the first magnetic bar 1 and the second magnetic bar 2 , so that the spacer 7 isolates an end of the first magnetic bar 1 away from the permanent magnet 3 from an end of the second magnetic bar 2 away from the permanent magnet 3 .

[0049] In the present manufacturing method, the isolation sheet 7 is disposed between the first magnetic bar 1 and the second magnetic bar 2. Specifically, the isolation sheet 7 is disposed at one end of the first magnetic bar 1 and the second magnetic bar 2 away from the permanent magnet 3, that is, the isolation sheet 7 is disposed at a position close to the top of the first magnetic bar 1 and the second magnetic bar 2, so that the ends of the first magnetic bar 1 and the second magnetic bar 2 away from the permanent magnet 3 are isolated by the isolation sheet 7. It can be foreseen that: in actual implementation, the isolation sheet 7 can be made of non-magnetic materials, such as copper, aluminum, stainless steel, etc., so that the isolation sheet 7 can isolate the first magnetic bar 1 and the second magnetic bar 2.

[0050] In the present application, the reason why the first magnetic bar 1 and the second magnetic bar 2 are isolated at one end away from the permanent magnet 3 by the isolation sheet 7 is to prevent the first magnetic bar 1 and the second magnetic bar 2 from directly contacting each other at one end away from the permanent magnet 3, thereby preventing the magnetic flux lines from propagating from the position where the first magnetic bar 1 and the second magnetic bar 2 are in direct contact outside the overall magnet formed by the permanent magnet 3, the first magnetic bar 1 and the second magnetic bar 2 to the second magnetic bar 2, thereby reducing the magnetic flux lines propagating from the spring needle, thereby enhancing the adsorption force of the first magnetic bar 1 and the second magnetic bar 2 on the spring needle.

[0051] In actual implementation, the first coil 4 and the second coil 5 can use the same set of power supply equipment for current flow, or they can use two sets of power supply equipment for current flow respectively. In order to make the structure of the needle selector more compact and reduce production costs, in this application, it is preferred that the first coil 4 and the second coil 5 use the same set of power supply equipment for current flow.

[0052] Therefore, in this embodiment, step S2 includes: Step S2.1: Wrap the enameled wire in a spiral shape from bottom to top around the outer circumference of the first magnetic bar 1 to form a first coil 4; Step S2.2: pulling the enameled wire horizontally to the second magnetic bar at the top of the formed first coil 4; Step S2.3: Wrap the enameled wire in a spiral shape from top to bottom around the outer circumference of the second magnetic bar 2 to form the second coil 5.

[0053] In this manufacturing method, the first coil 4 and the second coil 5 can be made of the same enameled wire. Specifically, the enameled wire is firstly wound in a spiral shape from bottom to top around the outer periphery of the first magnetic bar 1 to form the first coil 4; then, at the top of the first coil 4, the enameled wire is horizontally pulled to the second magnetic bar 2, and is wound in a spiral shape from top to bottom around the outer periphery of the second magnetic bar 2 to form the second coil 5, thereby realizing the series connection of the first coil 4 and the second coil 5, so that the first coil 4 and the second coil 5 can be passed through the same set of power supply equipment, thereby reducing the production cost.

[0054] In the present manufacturing method, the first coil 4 is manufactured by winding the enameled wire in a spiral shape from bottom to top around the outer periphery of the first magnetic bar 1; the second coil 5 is manufactured by winding the enameled wire in a spiral shape from bottom to top around the outer periphery of the second magnetic bar 2. The first coil 4 and the second coil 5 are connected in series by pulling the enameled wire horizontally from the top of the first coil 4 to the second magnetic bar 2.

[0055] That is, the tail end of the first coil 4 is located at the top of the first coil 4, and the head end of the second coil 5 is located at the top of the second coil 5. Therefore, the enameled wire is at the top of the first coil 4 and the top of the second coil 5, and the first coil 4 and the second coil 5 are connected in series. This can not only reduce the use of enameled wire, thereby reducing production costs, but also make the series connection of the first coil 4 and the second coil 5 simpler, making the implementation of this production method simple and convenient, and further improving production efficiency.

[0056] Furthermore, in this embodiment, step S2 further includes: Step S2.4: Pull the enameled wire horizontally to the first magnetic bar 1 at the bottom of the formed second coil 5, so that the tail end of the second coil 5 and the head end of the first coil 4 are routed in the routing groove 64 on one side of the magnetic bar base 6; Step S2.5: Connect the head end of the first coil 4 to the positive electrode of the power supply circuit, and connect the tail end of the second coil 5 to the negative electrode of the power supply circuit.

[0057] In this manufacturing method, the enameled wire is spirally wound around the outer circumference of the second magnetic bar 2 from top to bottom to form the second coil 5, and then the enameled wire is horizontally pulled to the first magnetic bar 1 at the bottom of the formed second coil 5, so that the tail end of the second coil 5 and the head end of the first coil 4 are located on the same side.

[0058] In the present application, a wiring groove 64 is provided on one side of the magnetic rod base 6, so that the head end of the first coil 4 and the tail end of the second coil 5 are both routed through the wiring groove 64, thereby limiting the head end of the first coil 4 and the tail end of the second coil 5 through the wiring groove 64, so that the routing of the first coil 4 and the second coil 5 is more regular, further making the implementation of the present manufacturing method simpler and more convenient, and improving production efficiency.

[0059] After the head end of the first coil 4 and the tail end of the second coil 5 are routed through the routing groove 64, the head end of the first coil 4 is connected to the positive pole of the power supply circuit, and the tail end of the second coil 5 is connected to the negative pole of the power supply circuit, thereby forming a closed loop, so that the power supply circuit can pass current to the first coil 4 and the second coil 5 at the same time, thereby reducing production costs.

[0060] Since the head end of the first coil 4 and the tail end of the second coil 5 are routed on the same side, the head end of the first coil 4 is connected to the positive pole of the power supply circuit, and the tail end of the second coil 5 is connected to the negative pole of the power supply circuit on the same side. This can make the connection between the first coil 4 and the second coil 5 and the power supply circuit simpler and more convenient, easier to implement, and the routing of the power supply circuit is more regular, thereby making the implementation of the method simple and convenient, and further improving production efficiency.

[0061] Since the direction of the magnetic field lines of flux formed in the energized coil is related to the winding direction of the current in the energized coil, it is worth noting that in actual implementation: when the first coil 4 is wound from bottom to top around the outer periphery of the first magnetic bar 1 and the second coil 5 is wound from top to bottom around the outer periphery of the second magnetic bar 2, it is necessary to design the connection direction of the current in the first coil 4 and the second coil 5 according to the right-hand screw rule, so that the direction of the magnetic field lines of flux formed in the first coil 4 is opposite to the direction of the internal magnetic field lines of flux of the first magnetic bar 1 after magnetization; the direction of the magnetic field lines of flux formed in the second coil 5 is opposite to the direction of the internal magnetic field lines of flux of the second magnetic bar 2 after magnetization.

[0062] In the present application, the bipolar magnetic bar structure manufactured by the above manufacturing method has two usage methods during actual implementation.

[0063] Embodiment 1: A method for using a bipolar magnetic rod structure according to an embodiment of the present invention comprises the following steps: Provided is a bipolar magnetic bar structure, comprising a first magnetic bar 1 and a second magnetic bar 2 arranged at intervals, a permanent magnet 3 arranged between the first magnetic bar 1 and the second magnetic bar 2, a first coil 4 arranged on the first magnetic bar 1, and a second coil 5 arranged on the second magnetic bar 2, wherein the top end of the first magnetic bar 1 is an N pole after being magnetized, and the top end of the second magnetic bar 2 is an S pole after being magnetized; The target soft magnet is adsorbed by the first magnetic rod 1 and the second magnetic rod 2 at the same time, and the target soft magnet is adsorbed on the top of the first magnetic rod 1 and the second magnetic rod 2 to form a closed magnetic line of force, so that the target soft magnet stops at the working position; The first coil 4 is energized to demagnetize the first magnetic bar 1, and the second coil 5 is energized to demagnetize the second magnetic bar 2, so that the first magnetic bar 1 and the second magnetic bar 2 release the adsorbed target soft magnet, and the target magnet returns to the non-working position under the action of its own elastic force.

[0064] In the present method of use, the adsorption position is the working position of the target soft magnet, and the non-adsorption position is the non-working position of the target soft magnet. Initially, the first coil 4 and the second coil 5 are powered on, and the first magnetic rod 1 and the second magnetic rod 2 do not adsorb the target soft magnet, and the target soft magnet is in the non-working position; when the target soft magnet needs to work, the first coil 4 and the second coil 5 are powered off, and the first magnetic rod 1 and the second magnetic rod 2 adsorb the target soft magnet, so that the target soft magnet moves from the non-working position to the working position; after the work is completed, the first coil 4 and the second coil 5 are powered on again, and the first magnetic rod 1 and the second magnetic rod 2 release the corresponding target soft magnet, so that the target soft magnet returns to the non-working position under the action of its own elastic force, waiting for the next operation.

[0065] Embodiment 2: A method for using a bipolar magnetic rod structure according to an embodiment of the present invention comprises the following steps: Provided is a bipolar magnetic bar structure, comprising a first magnetic bar 1 and a second magnetic bar 2 arranged at intervals, a permanent magnet 3 arranged between the first magnetic bar 1 and the second magnetic bar 2, a first coil 4 arranged on the first magnetic bar 1, and a second coil 5 arranged on the second magnetic bar 2, wherein the top end of the first magnetic bar 1 is an N pole after being magnetized, and the top end of the second magnetic bar 2 is an S pole after being magnetized; The target soft magnet is adsorbed by the first magnetic rod 1 and the second magnetic rod 2 at the same time, and the target soft magnet is adsorbed on the top of the first magnetic rod 1 and the second magnetic rod 2 to form a closed magnetic line of force, so that the target soft magnet stops at a non-working position; The first coil 4 is energized to demagnetize the first magnetic bar 1, and the second coil 5 is energized to demagnetize the second magnetic bar 2, so that the first magnetic bar 1 and the second magnetic bar 2 release the adsorbed target soft magnet, and the target magnet returns to the working position under the action of its own elastic force.

[0066] In the present method of use, the adsorption position is the non-working position of the target soft magnet, and the non-adsorption position is the working position of the target soft magnet. Initially, the first coil 4 and the second coil 5 are in a power-off state, and the first magnetic rod 1 and the second magnetic rod 2 adsorb the target soft magnet, and the target soft magnet is in a non-working position at this time; when the target soft magnet needs to work, the first coil 4 and the second coil 5 are powered on, and the first magnetic rod 1 and the second magnetic rod 2 loosen the target soft magnet, so that the target soft magnet moves from the non-working position to the working position under the action of its own elastic force; after the work is completed, the first coil 4 and the second coil 5 are powered off again, and the first magnetic rod 1 and the second magnetic rod 2 adsorb the target soft magnet, so that the target soft magnet returns to the non-working position and waits for the next operation.

[0067] Since the top of the first magnetic bar 1 is an N pole after being magnetized by the permanent magnet 3, and the top of the second magnetic bar 2 is an S pole after being magnetized by the permanent magnet 3, when the target soft magnet is adsorbed on the top of the first magnetic bar 1 and the top of the second magnetic bar 2 through the magnetic attraction force generated by the top of the first magnetic bar 1 and the top of the second magnetic bar 2, the target soft magnet connects the top of the first magnetic bar 1 with the top of the second magnetic bar 2, thereby forming closed magnetic flux lines in the permanent magnet 3, the first magnetic bar 1, the second magnetic bar 2 and the target soft magnet.

[0068] Therefore, it is possible to reduce the dispersion of magnetic flux lines, reduce mutual interference with the surrounding magnetic field, and reduce the energy loss of magnetic flux lines, thereby enhancing the adsorption force of the first magnetic bar 1 and the second magnetic bar 2 on the target soft magnetic body, making the movement of the target soft magnetic body between the non-working position and the working position more stable and accurate, thereby improving production efficiency.

[0069] In the present application, the bipolar magnetic bar structure manufactured by the above-mentioned manufacturing method is suitable for flat knitting machines such as glove machines, flat knitting machines, and collar weaving machines. That is, in the two embodiments of the use method of the above-mentioned bipolar magnetic bar structure, the target soft magnetic body can be the spring needle of the flat knitting machines such as glove machines, flat knitting machines, and collar weaving machines. The spring needles of the flat knitting machines such as glove machines, flat knitting machines, and collar weaving machines are adsorbed or released by the bipolar magnetic bar structure, so that the needle selection of the flat knitting machines such as glove machines, flat knitting machines, and collar weaving machines can be realized.

[0070] Furthermore, in this embodiment, a bipolar magnetic bar structure is provided, comprising the following steps: The first magnetic bar 1 and the second magnetic bar 2 are spaced apart on the magnetic bar base 6, and the permanent magnet 3 is arranged between the first magnetic bar 1 and the second magnetic bar 2, so that the bottom end of the first magnetic bar 1 is aligned with the N pole of the permanent magnet 3, and the bottom end of the second magnetic bar 2 is aligned with the S pole of the permanent magnet 3.

[0071] In the present method of use, the provided bipolar magnetic bar structure also includes a magnetic bar base 6, the first magnetic bar 1 and the second magnetic bar 2 are arranged on the magnetic bar base 6 at intervals, and the permanent magnet 3 is arranged between the first magnetic bar 1 and the second magnetic bar 2, so that the N pole of the permanent magnet fits with the bottom end of the first magnetic bar 1, and the S pole fits with the bottom end of the second magnetic bar 2, so that the permanent magnet 3 is used for magnetization, so that the first magnetic bar 1 and the second magnetic bar 2 are magnetized, and the top end of the first magnetic bar 1 is the N pole, and the top end of the second magnetic bar 2 is the S pole, so that the magnetic attraction generated by the top end of the first magnetic bar 1 and the top end of the second magnetic bar 2 adsorbs the corresponding spring pins.

[0072] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. 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 order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; 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 present invention.

Claims

1. A method for manufacturing a bipolar magnetic bar structure, characterized in that: The following steps are involved: Step S1: the bottom end of the first magnetic bar (1) is fitted with the N pole of the permanent magnet (3), and the bottom end of the second magnetic bar (2) is fitted with the S pole of the permanent magnet (3), so that the top end of the first magnetic bar (1) after being magnetized is the N pole, and the top end of the second magnetic bar (2) after being magnetized is the S pole; Step S2: a first coil (4) is arranged on the first magnetic bar (1), and a second coil (5) is arranged on the second magnetic bar (2), so that the current flow directions of the first coil (4) and the second coil (5) are opposite, and the first coil (4) that is energized demagnetizes the first magnetic bar (1), and the second coil (5) that is energized demagnetizes the second magnetic bar (2).

2. The method for manufacturing a bipolar magnetic rod structure according to claim 1, characterized in that: Step S1 includes: The first magnetic bar (1) and the second magnetic bar (2) are arranged at intervals on a magnetic bar base (6), and the permanent magnet (3) is arranged between the first magnetic bar (1) and the second magnetic bar (2), so that the bottom end of the first magnetic bar (1) is in contact with the N pole of the permanent magnet (3), and the bottom end of the second magnetic bar (2) is in contact with the S pole of the permanent magnet (3).

3. The method for manufacturing a bipolar magnetic rod structure according to claim 2, characterized in that: Step S1 includes: Step S1.1: placing the permanent magnet (3) in the third fixing cavity (63) of the magnetic bar base (6); Step S1.2: inserting the bottom of the first magnetic bar (1) into the first fixed cavity (61) of the magnetic bar base (6), inserting the bottom of the second magnetic bar (2) into the second fixed cavity (62) of the magnetic bar base (6), and providing the third fixed cavity (63) between the first fixed cavity (61) and the second fixed cavity (62), and providing a first opening connected to the first fixed cavity (61) at one end of the third fixed cavity (63), and providing a second opening connected to the second fixed cavity (62) at the other end, so that the bottom end of the first magnetic bar (1) is in contact with the N pole of the permanent magnet (3) through the first opening, and the bottom end of the second magnetic bar (2) is in contact with the S pole of the permanent magnet (3) through the second opening.

4. The method for manufacturing a bipolar magnetic rod structure according to claim 3, characterized in that: The bottom of the first magnetic bar (1) is inserted into the first fixed cavity (61) of the magnetic bar base (6), and the bottom of the second magnetic bar (2) is inserted into the second fixed cavity (62) of the magnetic bar base (6), comprising: The first contact surface (12) of the first magnetic bar (1) and the second contact surface (22) of the second magnetic bar (2) are located on the same horizontal plane, the first contact surface (12) is arranged on the top of the first magnetic bar (1), and the second contact surface (22) is arranged on the top of the second magnetic bar (2).

5. The method for manufacturing a bipolar magnetic bar structure according to claim 3, characterized in that: The bottom of the first magnetic bar (1) is inserted into the first fixed cavity (61) of the magnetic bar base (6), and the bottom of the second magnetic bar (2) is inserted into the second fixed cavity (62) of the magnetic bar base (6), comprising: The first limiting plate (11) of the first magnetic bar (1) is brought into contact with the top of the permanent magnet (3), and the second limiting plate (21) of the second magnetic bar (2) is brought into contact with the top of the permanent magnet (3); the first limiting plate (11) is arranged on a side of the first magnetic bar (1) close to the second magnetic bar (2), and the second limiting plate (21) is arranged on a side of the second magnetic bar (2) close to the first magnetic bar (1).

6. The method for manufacturing a bipolar magnetic bar structure according to claim 3, characterized in that: Step S1 also includes: Step S1.3: a spacer (7) is arranged between the first magnetic bar (1) and the second magnetic bar (2), so that the spacer (7) isolates an end of the first magnetic bar (1) away from the permanent magnet (3) from an end of the second magnetic bar (2) away from the permanent magnet (3).

7. The method for manufacturing a bipolar magnetic rod structure according to claim 2, characterized in that: Step S2 includes: Step S2.1: Winding the enameled wire in a spiral shape from bottom to top around the outer circumference of the first magnetic bar (1) to form the first coil (4); Step S2.2: pulling the enameled wire horizontally to the second magnetic rod (2) at the top of the formed first coil (4); Step S2.3: Wrap the enameled wire in a spiral shape from top to bottom around the outer circumference of the second magnetic bar (2) to form the second coil (5).

8. The method for manufacturing a bipolar magnetic bar structure according to claim 7, characterized in that: Step S2 also includes: Step S2.4: pulling the enameled wire horizontally to the first magnetic bar (1) at the bottom of the formed second coil (5), so that the tail end of the second coil (5) and the head end of the first coil (4) are routed in the routing groove (64) on one side of the magnetic bar base (6); Step S2.5: Connect the head end of the first coil (4) to the positive pole of the power supply circuit, and connect the tail end of the second coil (5) to the negative pole of the power supply circuit.

9. A method for using a bipolar magnetic rod structure, characterized in that: The following steps are involved: Provided is a bipolar magnetic bar structure, comprising a first magnetic bar (1) and a second magnetic bar (2) arranged at an interval, a permanent magnet (3) arranged between the first magnetic bar (1) and the second magnetic bar (2), a first coil (4) arranged on the first magnetic bar (1), and a second coil (5) arranged on the second magnetic bar (2), wherein the top end of the first magnetic bar (1) is an N pole after being magnetized, and the top end of the second magnetic bar (2) is an S pole after being magnetized; The target soft magnet is adsorbed by the first magnetic rod (1) and the second magnetic rod (2) at the same time, and the target soft magnet is adsorbed on the top ends of the first magnetic rod (1) and the second magnetic rod (2), so as to form a closed magnetic line of force, and the target soft magnet is stopped at the adsorption position; The first magnetic bar (1) is demagnetized by energizing the first coil (4), and the second magnetic bar (2) is demagnetized by energizing the second coil (5), so that the first magnetic bar (1) and the second magnetic bar (2) release the adsorbed target soft magnetic object, and the target magnetic object returns to a non-adsorbed position under the action of its own elastic force.

10. The method for using a bipolar magnetic rod structure according to claim 9, characterized in that: The invention provides a bipolar magnetic rod structure, comprising the following steps: The first magnetic bar (1) and the second magnetic bar (2) are arranged at intervals on a magnetic bar base (6), and the permanent magnet (3) is arranged between the first magnetic bar (1) and the second magnetic bar (2), so that the bottom end of the first magnetic bar (1) is in contact with the N pole of the permanent magnet (3), and the bottom end of the second magnetic bar (2) is in contact with the S pole of the permanent magnet (3).

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