Needle selector structure

Abstract

The utility model relates to and discloses a needle selector structure. Relates to the technical field of needle selectors. The needle selecting device specifically comprises a needle selecting seat, a plurality of magnetic rod assemblies fixedly installed on the needle selecting seat and a plurality of spring needles arranged above the magnetic rod assemblies, the magnetic rod assemblies are arranged on the needle selecting seat in a staggered mode, and the spring needles correspond to the magnetic rod assemblies one to one; the magnetic bar assembly comprises a first magnetic bar and a second magnetic bar which are arranged at intervals, the top end of the magnetized first magnetic bar is an N pole, and the top end of the magnetized second magnetic bar is an S pole. The top end of the first magnetic bar is N pole after being magnetized, the top end of the second magnetic bar is S pole after being magnetized, and the top end of the first magnetic bar and the top end of the second magnetic bar are conducted through the spring needle, so that magnetic induction lines outside the first magnetic bar and the second magnetic bar are spread in the spring needle, magnetic field interference with surrounding magnetic bar assemblies can be reduced, and the magnetic field interference is reduced. And the energy loss of magnetic induction lines can be reduced, so that the needle selection accuracy is ensured, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to needle selector technical field, in particular to a needle selector structure. BACKGROUND

[0002] People's daily wear sweater most are the wool that has many colors knitting, in the production process, a color wool carries out knitting operation, other color wool needs to stop operation, therefore needs to stop selecting and stopping various color wool in the knitting process, at present, the market generally adopts the electromagnetic needle selector technology controlled by computer to control the flat knitting machine to carry out needle selection, and then realizes the re-arrangement of sweater color, and various color sweaters are formed through the frequent operation of the needle selector.

[0003] At present, the needle selector of the flat knitting machine adopts the electromagnetic needle selector, and the electromagnetic needle selector is more and more widely used due to the advantages of simple structure and convenient use. The electromagnetic needle selector is usually provided with a corresponding number of magnetic rod assemblies corresponding to the spring needles of the flat knitting machine, the corresponding magnetic rod assemblies are magnetized or demagnetized, the corresponding spring needles are adsorbed or released, and the purpose of needle selection is achieved.

[0004] In the prior art, the number of magnetic rods in the magnetic rod assembly of the needle selector for a single spring needle is also single, and the magnetic pole is single, the magnetic induction loop is scattered, the magnetic field interference is large, when the magnetic rod assembly adsorbs or releases the corresponding spring needle, a large magnetic force is easily generated on the surrounding magnetic rod assemblies and spring needles, thereby possibly leading to needle selection error, and further causing knitting error and affecting production efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at the shortage of the prior art, provides a needle selector structure, which can reduce the magnetic force interference between the magnetic rod assemblies, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0006] The utility model provides a needle selector structure, which comprises a needle selector base, a plurality of magnetic rod assemblies fixedly installed on the needle selector base, and a plurality of spring needles arranged above the plurality of magnetic rod assemblies, the plurality of magnetic rod assemblies are arranged in a staggered manner on the needle selector base, and the plurality of spring needles correspond to the plurality of magnetic rod assemblies one by one; the magnetic rod assembly comprises a first magnetic rod and a second magnetic rod arranged at intervals, a first coil arranged on the first magnetic rod, and a second coil arranged on the second magnetic rod, the top end of the first magnetic rod is N-pole after being magnetized, the top end of the second magnetic rod is S-pole after being magnetized, the current directions of the first coil and the second coil are opposite, the first coil is de-magnetized, and the second coil is de-magnetized.

[0007] Further, the needle selector structure further comprises a rotating shaft arranged in parallel with the needle selector base, and a plurality of spring needles are arranged on the rotating shaft and are rotationally connected with the rotating shaft.

[0008] Further, the spring needle comprises a main body portion rotationally connected with the rotating shaft, and a deformation portion arranged at the bottom of the main body portion, and the main body portion is provided with a rotating hole at the end away from the needle selector base, and the rotating shaft penetrates through the rotating holes of the plurality of main body portions so that the plurality of main body portions are rotationally connected with the rotating shaft.

[0009] Further, the plurality of magnetic rod assemblies are arranged in at least two rows on the needle selector base, and the magnetic rod assemblies arranged in adjacent two rows are staggered.

[0010] Further, the needle selector base comprises a first base body and a second base body which are spliced with each other, the first base body is provided with a first half cavity, the second base body is provided with a second half cavity, the plurality of magnetic rod assemblies in the first row are arranged in the first half cavity, the plurality of magnetic rod assemblies in the second row are arranged in the second half cavity, and the plurality of magnetic rod assemblies in the first row and the plurality of magnetic rod assemblies in the second row are arranged in a staggered manner.

[0011] Further, the rotating shaft is arranged at one side of the first base body, the plurality of spring needles comprise a plurality of long needles and a plurality of short needles, the plurality of long needles and the plurality of short needles are arranged in a staggered manner on the rotating shaft, the plurality of magnetic rod assemblies in the first row are used to respectively adsorb or release the plurality of short needles, and the plurality of magnetic rod assemblies in the second row are used to respectively adsorb or release the plurality of long needles.

[0012] Further, the bottom of the first half cavity and the second half cavity is provided with a plurality of magnetic rod limiting grooves, and the top of the first half cavity and the second half cavity is provided with a plurality of magnetic rod extension outlets, the plurality of magnetic rod limiting grooves are used to respectively limit the bottom of the plurality of magnetic rod assemblies, the plurality of magnetic rod extension outlets are used to respectively allow the top of the plurality of magnetic rod assemblies to extend out, and the plurality of magnetic rod limiting grooves are used to respectively limit the bottom of the plurality of magnetic rod assemblies.

[0013] Further, the magnetic rod assembly further comprises a magnetic rod base and a permanent magnet arranged in the magnetic rod base, the first magnetic rod and the second magnetic rod are arranged in a spaced manner on the magnetic rod base, the permanent magnet is located between the first magnetic rod and the second magnetic rod, the bottom end of the first magnetic rod is attached to the N-pole of the permanent magnet, and the bottom end of the second magnetic rod is attached to the S-pole of the permanent magnet.

[0014] Further, one side of the magnetic rod base is provided with a wiring groove, and the end portions of the first coil and the second coil are wired in the wiring groove.

[0015] Furthermore, the needle selection seat also includes a control plate disposed at the bottom of the first seat and the second seat, and a housing for fixing the first seat and the second seat. The first seat and the second seat are fixedly connected to the top of the housing. The control plate is disposed in the housing. The bottom of the magnetic rod limiting groove is provided with a wiring hole. The ends of the first coil and the second coil pass through the wiring hole and are fixed on the control plate.

[0016] The needle selector structure proposed in this utility model has the following beneficial effects:

[0017] (1) After the first magnetic rod of the magnetic rod assembly of this needle selector is magnetized, the top end is N pole and the top end of the second magnetic rod is magnetized. The top end of the first magnetic rod and the top end of the second magnetic rod are connected by a spring needle, so that the magnetic field lines outside the first and second magnetic rods can propagate in the spring needle. This can reduce magnetic field interference with the surrounding magnetic rod assembly and reduce energy loss of magnetic field lines, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0018] (2) The multiple magnetic rod assemblies of this needle selector structure are staggered on the needle selector seat, which can reduce the distance between two adjacent magnetic rod assemblies, so that more magnetic rod assemblies can be arranged on the needle selector seat as much as possible. When the number of spring needles is set according to the number of magnetic rod assemblies, the number of spring needles can be increased, thereby increasing the knitting range of the flat knitting machine and making the flat knitting machine more widely applicable.

[0019] (3) The needle selector structure of this needle selector also includes a rotating shaft, which is parallel and spaced apart from the needle selector seat. Multiple spring needles are arranged side by side on the rotating shaft and are rotatably connected to the rotating shaft. When the magnetic rod assembly attracts the spring needles, the spring needles rotate around the rotating shaft and generate elastic deformation. When the magnetic rod assembly releases the spring needles, the spring needles rotate in the opposite direction around the rotating shaft under the elastic force of restoring their own deformation, so that the spring needles return to their initial position. This allows the spring needles to switch between the working position and the non-working position, thereby realizing the needle selection of the needle selector.

[0020] (4) The spring needle of this needle selector structure includes a main body and a deformation part. When the magnetic rod assembly attracts the spring needle, the main body rotates around the rotation axis, and the deformation part is compressed and deformed. When the magnetic rod assembly releases the spring needle, under the elastic force of the deformation part restoring its own deformation, the main body rotates in the opposite direction around the rotation axis and returns to the initial position, so that the main body of the spring needle switches between the working position and the non-working position, thereby realizing the needle selection of the needle selector.

[0021] (5) The plurality of magnetic rod assemblies of the needle selection device structure are arranged in at least two rows on the needle selection seat, and the plurality of magnetic rod assemblies arranged in adjacent two rows are arranged in turn staggered, so that the plurality of magnetic rod assemblies can adsorb or release the respective corresponding spring needles, and in the process of adsorbing or releasing the respective corresponding spring needles by the plurality of magnetic rod assemblies, the movement trajectories of all the spring needles do not coincide, thereby preventing mutual interference between the spring needles, and further ensuring the accuracy of needle selection and improving production efficiency;

[0022] (6) The needle selection seat of the needle selection device structure is composed of a first seat body and a second seat body, a first half cavity is arranged in the first seat body, a second half cavity is arranged in the second seat body, a plurality of magnetic rod limiting grooves arranged at the bottom of the first half cavity are arranged in a staggered manner with a plurality of magnetic rod limiting grooves arranged at the bottom of the second half cavity; a plurality of magnetic rod exit ports arranged at the top of the first half cavity are arranged in a staggered manner with a plurality of magnetic rod exit ports arranged at the top of the second half cavity, so that the first row of magnetic rod assemblies arranged in the first half cavity are arranged in a staggered manner with the second row of magnetic rod assemblies arranged in the second half cavity;

[0023] (7) The plurality of spring needles of the needle selection device structure include a plurality of short needles and a plurality of long needles, the plurality of short needles and the plurality of long needles are arranged in a staggered manner, so that the plurality of magnetic rod assemblies in the first row can adsorb or release the plurality of short needles, and the plurality of magnetic rod assemblies in the second row can adsorb or release the plurality of long needles, thereby ensuring that the plurality of magnetic rod assemblies arranged on the needle selection seat can adsorb or release the corresponding spring needles, and further realizing the needle selection of the needle selection device;

[0024] (8) The magnetic rod assembly of the needle selection device structure further includes a magnetic rod base and a permanent magnet, the permanent magnet is arranged in the magnetic rod base, the first magnetic rod and the second magnetic rod are arranged in the magnetic rod base in a spaced manner, the permanent magnet is arranged between the first magnetic rod and the second magnetic rod, the first magnetic rod, the permanent magnet and the second magnetic rod form an integral magnet, the first magnetic rod is the N pole of the magnet, and the second magnetic rod 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, 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 production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment 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] Figure 1 It is a structure schematic view of a needle selection device structure of the embodiment of the present application;

[0027] Figure 2For Figure 1 Enlarged schematic view at A in the middle;

[0028] Figure 3 Structure schematic view of the spring needle of the needle selector structure of the embodiment of the utility model;

[0029] Figure 4 Structure schematic view of multiple magnetic rod assemblies of the needle selector structure of the embodiment of the utility model arranged on the needle selector seat;

[0030] Figure 5 Assembly explosion view of multiple magnetic rod assemblies of the needle selector structure of the embodiment of the utility model arranged on the needle selector seat;

[0031] Figure 6 Partial structure schematic view of multiple magnetic rod assemblies of the needle selector structure of the embodiment of the utility model installed on the first seat body or the second seat body;

[0032] Figure 7 Structure schematic view of the magnetic rod assembly of the needle selector structure of the embodiment of the utility model;

[0033] Figure 8 Cross-sectional schematic view of the magnetic rod assembly of the needle selector structure of the embodiment of the utility model;

[0034] Figure 9 Structure schematic view of the magnetic rod base of the needle selector structure of the embodiment of the utility model.

[0035] In the figure: 1, needle selector seat; 11, first seat body; 111, magnetic rod limiting groove; 112, magnetic rod exit; 113, wiring hole; 12, second seat body; 13, control panel; 14, shell; 2, magnetic rod assembly; 21, first magnetic rod; 22, second magnetic rod; 23, first coil; 24, second coil; 25, magnetic rod base; 251, first fixed cavity; 252, second fixed cavity; 253, third fixed cavity; 254, wiring groove; 26, permanent magnet; 3, spring needle; 31, long needle; 311, main body part; 312, deformation part; 313, rotating hole; 32, short needle; 4, rotating shaft. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below by combining the drawings in the embodiment of the utility model, and all other embodiments obtained by the person skilled in the art without making creative labor on the basis of the embodiment of the utility model belong to the protection scope of the utility model.

[0037] Please refer to Figures 1-9The utility model discloses an embodiment of a needle selector structure, including needle selection seat 1, the multiple magnetic bar assembly 2 of fixed mounting on needle selection seat 1 to multiple spring needle 3 of setting in the multiple magnetic bar assembly 2 top, multiple magnetic bar assembly 2 is set in the dislocation of needle selection seat 1, and multiple spring needle 3 with multiple magnetic bar assembly 2 one -to -one corresponds, magnetic bar assembly 2 includes the first magnetic bar 21 and the second magnetic bar 22 of interval setting, the first coil 23 of being located first magnetic bar 21 and the second coil 24 of being located second magnetic bar 22, the top end shows N pole after the magnetization of first magnetic bar 21, and the top end shows S pole after the magnetization of second magnetic bar 22, and the through -flow direction of first coil 23 and second coil 24 is opposite, and the first coil 23 of electrification carries out demagnetization to first magnetic bar 21, and the second coil 24 of electrification carries out demagnetization to second magnetic bar 22.

[0038] In the application, the needle selector structure includes a needle selection seat 1, multiple magnetic bar assemblies 2 and multiple spring needles 3, the multiple magnetic bar assemblies 2 are arranged on the needle selection seat 1, and the multiple spring needles 3 are arranged above the multiple magnetic bar assemblies 2. The number of the spring needles 3 corresponds to the number of the magnetic bar assemblies 2, that is, the multiple spring needles 3 one-to-one correspond to the multiple magnetic bar assemblies 2, the corresponding spring needles 3 are adsorbed or released by the corresponding magnetic bar assemblies 2, so that the needle selection of the needle selector structure is realized.

[0039] In the embodiment, the needle selector structure of the application is suitable for glove machines, flat knitting machines, collar knitting machines and other flat knitting machines, that is, when the needle selector structure is used in the glove machines, flat knitting machines, collar knitting machines and other flat knitting machines, the corresponding spring needles 3 are adsorbed or released by the corresponding magnetic bar assemblies 2, so that the needle selection of the glove machines, flat knitting machines, collar knitting machines and other flat knitting machines can be realized.

[0040] In the application, the multiple magnetic bar assemblies 2 are arranged in dislocation on the needle selection seat 1, so that the spacing between the adjacent two magnetic bar assemblies 2 can be reduced, more magnetic bar assemblies 2 can be arranged on the needle selection seat 1 as far as possible, the number of the spring needles 3 can be increased, the knitting range of the flat knitting machine is increased, and the application range of the flat knitting machine is wider.

[0041] In the application, the magnetic bar assembly 2 includes the first magnetic bar 21 and the second magnetic bar 22, and the first magnetic bar 21 and the second magnetic bar 22 are arranged at intervals, wherein the top end of the first magnetic bar 21 shows N pole after magnetization, and the top end of the second magnetic bar 22 shows S pole after magnetization. For a single spring needle 3, the corresponding spring needle 3 can be adsorbed by the magnetic attraction force generated by the first magnetic bar 21 and the second magnetic bar 22.

[0042] Because of the magnetic field line direction of the magnet, outside the magnet is from N pole to S pole, inside the magnet is from S pole to N pole, and in the prior art, the needle selector magnet rod assembly used for a single spring needle 3 is of the same magnetic pole. Therefore, outside the magnet rod, the magnetic field line is propagated from N pole to S pole in the air, the magnetic field line propagated in the air has a loop dispersion, and energy loss is large, so as to easily cause mutual interference with the magnetic field of the surrounding magnet rod, reduce the adsorption force of the magnet rod on the corresponding spring needle 3, and further possibly cause needle selection error, cause knitting error, and affect production efficiency.

[0043] In the present application, the first magnet rod 21 has a top end of N pole after magnetization, and the second magnet rod 22 has a top end of S pole after magnetization, and when the first magnet rod 21 and the second magnet rod 22 simultaneously adsorb the corresponding spring needle 3, the spring needle 3 connects the top end of the first magnet rod 21 and the top end of the second magnet rod 22.

[0044] In the present embodiment, the first magnet rod 21, the second magnet rod 22 and the spring needle 3 are all made of soft magnetic material. Because the air is a non-magnetic medium, its magnetic resistance is much larger than that of the soft magnetic material, and similar to the electric current, the magnetic field line always takes the path with the minimum magnetic resistance (the maximum magnetic permeability), so most of the magnetic field lines outside the first magnet rod 21 and the second magnet rod 22 are propagated from N pole to S pole in the spring needle 3.

[0045] On the one hand, the loop dispersion of the magnetic field line propagated outside the first magnet rod 21 and the second magnet rod 22 can be prevented, so as to reduce the magnetic field interference between the surrounding magnet rod assemblies 2; on the other hand, because the magnetic resistance of the spring needle 3 is much smaller than that of the air, the energy loss of the magnetic field line propagated in the spring needle 3 is small, so as to enhance the adsorption force of the first magnet rod 21 and the second magnet rod 22 on the corresponding spring needle 3, and further ensure the accuracy of needle selection and improve the production efficiency.

[0046] In the present application, the magnet rod assembly 2 further comprises a first coil 23 and a second coil 24, the first coil 23 is arranged on the first magnet rod 21, and the second coil 24 is arranged on the second magnet rod 22. It is mentioned in the foregoing that the first magnet rod 21 and the second magnet rod 22 are made of soft magnetic material, so after the first magnet rod 21 and the second magnet rod 22 are magnetized, the magnetic attraction force can be simultaneously generated on the corresponding spring needle 3, the spring needle 3 is moved and elastically deformed, and the spring needle 3 is adsorbed on the top end of the first magnet rod 21 and the second magnet rod 22.

[0047] When the first coil 23 is energized, the magnetic field formed in the first coil 23 has a magnetic field line direction opposite to that of the internal magnetic field line of the first magnet rod 21 after magnetization, so the magnetic field formed in the first coil 23 and the magnetic field of the first magnet rod 21 after magnetization offset each other, thereby reducing the magnetic field strength of the first magnet rod 21 and realizing demagnetization of the first magnet rod 21.

[0048] When the second coil 24 is energized, the magnetic field formed in the second coil 24 has a magnetic field line direction opposite to the direction of the internal magnetic field line of the second magnetic rod 22 after it is magnetized. Therefore, the magnetic field formed in the second coil 24 cancels out the magnetic field of the second magnetic rod 22 after it is magnetized, thereby reducing the magnetic field strength of the second magnetic rod 22 and achieving the demagnetization of the second magnetic rod 22.

[0049] When the magnetic attraction force of the first magnetic rod 21 and the second magnetic rod 22 on the spring needle 3 is less than the elastic force required for the spring needle 3 to recover its deformation, the first magnetic rod 21 and the second magnetic rod 22 release the attracted spring needle 3, allowing the spring needle 3 to return to its original shape. Therefore, in this application, by attracting or releasing the corresponding spring needle 3 with the first magnetic rod 21 and the second magnetic rod 22, the position of the corresponding spring needle 3 changes, thereby realizing the needle selection of this needle selector structure.

[0050] In one embodiment, initially, the first magnetic rod 21 and the second magnetic rod 22 do not attract the corresponding spring needle 3, and the spring needle 3 is in a non-working position. When selecting a needle, the first magnetic rod 21 and the second magnetic rod 22 attract the corresponding spring needle 3, causing the spring needle 3 to move from the non-working position to the working position for knitting. After the work is completed, the first coil 23 and the second coil 24 are energized, and the first magnetic rod 21 and the second magnetic rod 22 release the corresponding spring needle 3, causing the spring needle 3 to return to the non-working position and wait for the next knitting operation.

[0051] In another embodiment, initially, the first magnetic rod 21 and the second magnetic rod 22 attract the corresponding spring needle 3, at which time the spring needle 3 is in a non-working position; when selecting a needle, the first coil 23 and the second coil 24 are energized, and the first magnetic rod 21 and the second magnetic rod 22 release the corresponding spring needle 3, causing the spring needle 3 to move from the non-working position to the working position for knitting; after the work is completed, the first coil 23 and the second coil 24 are de-energized, and the first magnetic rod 21 and the second magnetic rod 22 attract the corresponding spring needle 3, causing the spring needle 3 to return to the non-working position, waiting for the next knitting operation.

[0052] In this embodiment, the needle selector structure also includes a rotating shaft 4, which is parallel and spaced apart from the needle selector seat 1. Multiple spring needles 3 are arranged side-by-side on the rotating shaft 4, thereby fixing their positions. As described above, when the magnetic rod assembly 2 attracts or releases the spring needles 3, the spring needles 3 are displaced, thus switching between a working position and a non-working position.

[0053] Therefore, in this application, multiple spring needles 3 are arranged side by side on the rotating shaft 4 and rotatably connected to the rotating shaft 4. When the magnetic rod assembly 2 attracts the spring needles 3, the spring needles 3 rotate around the rotating shaft 4 and generate elastic deformation. When the magnetic rod assembly 2 releases the spring needles 3, the spring needles 3 rotate in the opposite direction around the rotating shaft 4 under the elastic force of restoring their own deformation, so that the spring needles 3 return to their initial position. This allows the spring needles 3 to switch between the working position and the non-working position, thereby realizing the needle selection of this needle selector structure.

[0054] Specifically, in this embodiment, the spring needle 3 includes a main body 311 and a deformation part 312. A rotating hole 313 is provided at the end of the main body 311 away from the needle selection seat 1. The rotating shaft 4 passes through the rotating holes 313 of multiple main bodies 311 at the same time, so that the main bodies 311 of multiple spring needles 3 are simultaneously rotatably connected to the rotating shaft 4.

[0055] The deformation part 312 is located at the bottom of the main body 311. When the magnetic attraction force generated by the magnetic rod assembly 2 attracts the end of the main body 311 near the needle selection seat 1, the main body 311 rotates around the rotation axis 4, and the deformation part 312 is compressed and deformed. When the magnetic attraction force generated by the magnetic rod assembly 2 decreases or disappears, the magnetic rod assembly 2 releases the end of the main body 311 near the needle selection seat 1. Under the elastic force of the deformation part 312 restoring its own deformation, the main body 311 rotates in the opposite direction around the rotation axis 4 and returns to the initial position, thereby switching the main body 311 of the spring needle 3 between the working position and the non-working position, realizing the needle selection of this needle selector structure.

[0056] In this embodiment, multiple magnetic rod assemblies 2 are arranged in at least two rows on the needle selection seat 1, and the multiple magnetic rod assemblies 2 arranged in adjacent rows are staggered in sequence, so that the multiple magnetic rod assemblies 2 can attract or release their respective corresponding spring needles 3. During the process of multiple magnetic rod assemblies 2 attracting or releasing their respective corresponding spring needles 3, the movement trajectories of all spring needles 3 do not overlap, thereby preventing mutual interference between spring needles 3, thus ensuring the accuracy of needle selection and improving production efficiency.

[0057] Furthermore, in this embodiment, the needle selection seat 1 includes a first seat body 11 and a second seat body 12, which are assembled together. A first half-cavity is provided in the first seat body 11, and a second half-cavity is provided in the second seat body 12. A first row of magnetic rod assemblies 2 are disposed in the first half-cavity, and a second row of magnetic rod assemblies 2 are disposed in the second half-cavity.

[0058] Multiple magnetic rod limiting grooves 111 are provided at the bottom of both the first and second half-cavities. When the first row of magnetic rod assemblies 2 is placed in the first half-cavity, the multiple magnetic rod limiting grooves 111 at the bottom of the first half-cavity limit the bottom of the multiple magnetic rod assemblies 2 in the first row respectively. When the second row of magnetic rod assemblies 2 is placed in the second half-cavity, the multiple magnetic rod limiting grooves 111 at the bottom of the second half-cavity limit the bottom of the multiple magnetic rod assemblies 2 in the second row respectively.

[0059] Multiple magnetic rod protrusions 112 are provided at the top of both the first and second half-cavities. When the first row of magnetic rod assemblies 2 is placed in the first half-cavity, the tops of the multiple magnetic rod assemblies 2 in the first row protrude through the multiple magnetic rod protrusions 112 respectively. When the second row of magnetic rod assemblies 2 is placed in the second half-cavity, the tops of the multiple magnetic rod assemblies 2 in the second row protrude through the multiple magnetic rod protrusions 112 respectively. This allows the tops of the first row of magnetic rod assemblies 2 in the first half-cavity and the tops of the second row of magnetic rod assemblies 2 in the second half-cavity to attract or release their respective corresponding spring needles 3, thereby realizing the needle selection of this needle selector structure.

[0060] In this application, a plurality of magnetic rod limiting grooves 111 provided at the bottom of the first half cavity are misaligned with a plurality of magnetic rod limiting grooves 111 provided at the bottom of the second half cavity; a plurality of magnetic rod protrusions 112 provided at the top of the first half cavity are misaligned with a plurality of magnetic rod protrusions 112 provided at the top of the second half cavity, thereby causing the first row of magnetic rod assemblies 2 provided in the first half cavity to be misaligned with the second row of magnetic rod assemblies 2 provided in the second half cavity.

[0061] Furthermore, in this application, one end of the plurality of magnetic rod protrusions 112 provided at the top of the first half cavity and the second half cavity is open, and one end of the plurality of magnetic rod limiting grooves 111 provided at the bottom of the first half cavity and the second half cavity is open.

[0062] When installing the first row of magnetic rod assemblies 2 in the first base 11 and the second row of magnetic rod assemblies 2 in the second base 12, the top of the magnetic rod assembly 2 is slidably inserted into the magnetic rod protrusion 112 through the opening of the magnetic rod protrusion 112, and the bottom of the magnetic rod assembly 2 is slidably inserted into the magnetic rod limiting groove 111 through the opening of the magnetic rod limiting groove 111. This makes the installation of the first row of magnetic rod assemblies 2 in the first base 11 and the second row of magnetic rod assemblies 2 in the second base 12 simpler and more convenient, thereby making the implementation of this needle selector structure simpler and more convenient.

[0063] As mentioned in the previous embodiments, multiple magnetic rod assemblies 2 are arranged in at least two rows on the needle selection seat 1, and the multiple magnetic rod assemblies 2 arranged in adjacent rows are staggered. Therefore, it can be foreseen that in actual implementation, the first half cavity of the first seat 11 and the second half cavity of the second seat 12 are not limited to a single row of magnetic rod assemblies 2, but multiple rows of magnetic rod assemblies 2 can also be arranged.

[0064] Specifically, the bottom of the first half-cavity may be provided with multiple rows of magnetic rod limiting grooves 111 for limiting the bottom of the multiple rows of magnetic rod assembly 2. The top of the first half-cavity may be provided with multiple rows of magnetic rod protrusions 112 for the top of the multiple rows of magnetic rod assembly 2 to protrude. The multiple rows of magnetic rod limiting grooves 111 at the bottom of the first half-cavity are offset, and correspondingly, the multiple rows of magnetic rod protrusions 112 at the top of the first half-cavity are also offset, thus the multiple rows of magnetic rod assembly 2 in the first half-cavity is offset. Similarly, the bottom of the second half-cavity may be provided with multiple rows of magnetic rod limiting grooves 111, and the top may be provided with multiple rows of magnetic rod protrusions 112, with the multiple rows of magnetic rod limiting grooves 111 and the multiple rows of magnetic rod protrusions 112 also offset.

[0065] It is worth noting that the multiple rows of magnetic rod assemblies 2 in the first half cavity are misaligned in the same direction. When the first seat 11 and the second seat 12 are assembled, the two adjacent rows of magnetic rod assemblies 2 at the junction of the first half cavity and the second half cavity are also misaligned, and the direction of misalignment is the same as the direction of misalignment of the multiple rows of magnetic rod assemblies 2 in the first half cavity. The other multiple rows of magnetic rod assemblies 2 in the second half cavity are all misaligned with the direction of misalignment of the row of magnetic rod assemblies 2 at the junction, thereby ensuring that the movement trajectories of all spring needles 3 do not overlap.

[0066] Since the end of the spring needle 3 away from the first seat 11 is sleeved on the rotating shaft 4 through the rotating hole 313, the spring needle 3 is rotatably connected to the rotating shaft 4, and the rotating shaft 4 fixes the position of the end of the spring needle 3 away from the first seat 11.

[0067] In this application, multiple magnetic rod assemblies 2 are arranged in at least two rows on the needle selection seat 1. Therefore, when the rotating shaft 4 is set on one side of the needle selection seat 1, the distance between it and each row of magnetic rod assemblies 2 is different. If all the spring needles 3 are set to the same length, it may be possible that a row of magnetic rod assemblies 2 that is far away from the rotating shaft 4 cannot attract the corresponding spring needle 3.

[0068] Taking a needle selection base 1 with two rows of magnetic rod assemblies 2, wherein the first row of magnetic rod assemblies 2 is located in the first half-cavity of the first base 11 and the second row of magnetic rod assemblies 2 is located in the second half-cavity of the second base 12 as an example. In this embodiment, the rotating shaft 4 is located on one side of the first base 11. It is foreseeable that the distance between the second row of magnetic rod assemblies 2 and the rotating shaft 4 is greater than the distance between the first row of magnetic rod assemblies 2 and the rotating shaft 4.

[0069] Therefore, in this application, the multiple spring needles 3 include multiple short needles 32 and multiple long needles 31. When the rotating shaft 4 fixes the ends of the multiple long needles 31 and multiple short needles 32 away from the first base 11, the multiple short needles 32 extend above the first row of magnetic rod assembly 2, and the multiple long needles 31 extend above the second row of magnetic rod assembly 2.

[0070] Because the first row of magnetic rod assemblies 2 and the second row of magnetic rod assemblies 2 are staggered, multiple short needles 32 and multiple long needles 31 are arranged alternately, so that the multiple magnetic rod assemblies 2 in the first row can attract or release multiple short needles 32 respectively, and the multiple magnetic rod assemblies 2 in the second row can attract or release multiple long needles 31 respectively. This ensures that the multiple magnetic rod assemblies 2 set on the needle selection seat 1 can attract or release the corresponding spring needles 3, thereby realizing the needle selection of this needle selector structure.

[0071] In this embodiment, the magnetic rod assembly 2 further includes a magnetic rod base 25 and a permanent magnet 26. The permanent magnet 26 is disposed in the magnetic rod base 25. The first magnetic rod 21 and the second magnetic rod 22 are spaced apart on the magnetic rod base 25, and the permanent magnet 26 is disposed between the first magnetic rod 21 and the second magnetic rod 22.

[0072] Since the bottom end of the first magnetic rod 21 is in contact with the N pole of the permanent magnet 26, and the bottom end of the second magnetic rod 22 is in contact with the S pole of the permanent magnet 26, the first magnetic rod 21 and the second magnetic rod 22 are magnetized by the permanent magnet 26. The top of the first magnetic rod 21 is the N pole and the top of the second magnetic rod 22 is the S pole. Thus, the corresponding spring needle 3 is attracted by the magnetic attraction force generated by the first magnetic rod 21 and the second magnetic rod 22.

[0073] After the first magnetic rod 21 and the second magnetic rod 22 are magnetized by the permanent magnet 26, it is equivalent to the first magnetic rod 21 extending the N pole of the permanent magnet 26 and the second magnetic rod 22 extending the S pole of the permanent magnet 26. That is, the first magnetic rod 21, the permanent magnet 26 and the second magnetic rod 22 are regarded as a whole magnet, with the first magnetic rod 21 being the N pole of the magnet and the second magnetic rod 22 being the S pole of the magnet.

[0074] The magnetic field lines of this magnet run from the N pole to the S pole outside the magnet. That is, outside the magnet, the magnetic field lines propagate through the air from the tip of the first magnetic rod 21 to the tip of the second magnetic rod 22. When the first magnetic rod 21 and the second magnetic rod 22 are attracted to the spring needle 3, the spring needle 3 connects the tips of the first magnetic rod 21 and the second magnetic rod 22, thus connecting the N pole and the S pole of the entire magnet.

[0075] Since the magnetic reluctance of the spring needle 3 is much smaller than that of air, the magnetic field lines outside the magnet preferentially choose the path with the least magnetic reluctance. Therefore, most of the magnetic field lines propagate from the N pole to the S pole in the spring needle 3. This not only prevents the magnetic field line loops outside the magnet from becoming scattered and reduces mutual interference with the surrounding magnetic field, but also reduces the energy loss of the magnetic field lines, enhances the attraction force of the first magnetic rod 21 and the second magnetic rod 22 on the spring needle 3, thereby ensuring the accuracy of needle selection and improving production efficiency.

[0076] Specifically, in actual implementation, when installing the magnetic rod assembly 2 in the first or second half cavity, each magnetic rod limiting groove 111 limits the magnetic rod base 25 of one magnetic rod assembly 2, and the tops of the first magnetic rod 21 and the second magnetic rod 22 of each magnetic rod assembly 2 extend out of a magnetic rod protrusion 112, so that the tops of the first magnetic rod 21 and the second magnetic rod 22 can simultaneously attract or release the corresponding spring needle 3.

[0077] Furthermore, in this application, the magnetic rod base 25 is provided with a first fixing cavity 251, a second fixing cavity 252 and a third fixing cavity 253, the first fixing cavity 251 and the second fixing cavity 252 are spaced apart, and the third fixing cavity 253 is located between the first fixing cavity 251 and the second fixing cavity 252.

[0078] When assembling the magnetic rod assembly 2, the bottom of the first magnetic rod 21 is inserted into the first fixing cavity 251, the bottom of the second magnetic rod 22 is inserted into the second fixing cavity 252, and the permanent magnet 26 is disposed in the third fixing cavity 253. Thus, the first magnetic rod 21 is fixed by the first fixing cavity 251, the second magnetic rod 22 is fixed by the second fixing cavity 252, and the permanent magnet 26 is fixed by the third fixing cavity 253, so that the first magnetic rod 21 and the second magnetic rod 22 are spaced apart on the magnetic rod base 25, and the permanent magnet 26 is disposed between the first magnetic rod 21 and the second magnetic rod 22.

[0079] The two ends of the third fixed cavity 253 are connected to the first fixed cavity 251 and the second fixed cavity 252 respectively. The N pole and S pole of the permanent magnet 26 are located at the two ends of the permanent magnet 26 respectively. Therefore, the N pole of the permanent magnet 26 is attached to the bottom end of the first magnetic rod 21 at one end of the third fixed cavity 253, and the S pole of the permanent magnet 26 is attached to the bottom end of the second magnetic rod 22 at the other end of the third fixed cavity 253, so that the first magnetic rod 21, the permanent magnet 26 and the second magnetic rod 22 form a U-shaped integral magnet.

[0080] As mentioned in the previous embodiments: outside the integral magnet formed by the permanent magnet 26, the first magnetic rod 21 and the second magnetic rod 22, the magnetic field lines propagate from the top of the first magnetic rod 21 to the top of the second magnetic rod 22; while inside the integral magnet, after passing through the second magnetic rod 22, the permanent magnet 26 and the first magnetic rod 21 in sequence, the magnetic field lines propagate from the top of the second magnetic rod to the top of the first magnetic rod 21, thereby forming a closed loop with the magnetic field lines outside the integral magnet.

[0081] Therefore, in this application, the internal magnetic field lines of the first magnetic rod 21 after being magnetized propagate from the bottom end to the top end of the first magnetic rod 21, and the internal magnetic field lines of the second magnetic rod 22 after being magnetized propagate from the top end to the bottom end of the second magnetic rod 22. That is, the internal magnetic field lines of the first magnetic rod 21 after being magnetized are from bottom to top, and the internal magnetic field lines of the second magnetic rod 22 after being magnetized are from top to bottom.

[0082] Therefore, in this embodiment, the first coil 23 is wound around the outer periphery of the first magnetic rod 21 from bottom to top, so that when the first coil 23 is energized, the magnetic field formed in the first coil 23 has a magnetic field line direction opposite to the direction of the internal magnetic field line of the first magnetic rod 21 after it is magnetized. This makes the magnetic field formed in the first coil 23 cancel each other out with the magnetic field of the first magnetic rod 21 after it is magnetized, reducing the magnetic field strength of the first magnetic rod 21, thereby achieving the demagnetization of the first magnetic rod 21.

[0083] The second coil 24 is wound from top to bottom around the outer circumference of the second magnetic rod 22. When the second coil 24 is energized, the magnetic field line direction of the magnetic field formed by the second coil 24 is opposite to the direction of the magnetic field line inside the second magnetic rod 22 after it is magnetized. This causes the magnetic field formed by the second coil 24 to cancel each other out with the magnetic field of the second magnetic rod 22 after it is magnetized, thereby reducing the magnetic field strength of the second magnetic rod 22 and thus demagnetizing the second magnetic rod 22.

[0084] In actual implementation, the first coil 23 and the second coil 24 can be powered by the same power supply equipment or by two separate power supply equipment. In order to make the needle selector structure more compact and reduce production costs, in this application, it is preferred that the first coil 23 and the second coil 24 be powered by the same power supply equipment.

[0085] Therefore, in this embodiment, the tail end of the first coil 23 is connected to the head end of the second coil 24, thereby connecting the first coil 23 and the second coil 24 in series; the head end of the first coil 23 is connected to the positive terminal of the power supply circuit, and the tail end of the second coil 24 is connected to the negative terminal of the power supply circuit, thereby forming a closed loop, enabling the power supply circuit to simultaneously supply current to the first coil 23 and the second coil 24, thereby making the needle selector structure more compact and reducing production costs.

[0086] Specifically, in actual implementation, the same enameled wire can be used to make the first coil 23 and the second coil 24, as well as to connect the first coil 23 and the second coil 24 in series. First, the enameled wire is spirally wound from bottom to top around the outer circumference of the first magnetic rod 21 to form the first coil 23. Then, at the top of the first coil 23, the enameled wire is pulled horizontally to the second magnetic rod 22 and spirally wound from top to bottom around the outer circumference of the second magnetic rod 22 to form the second coil 24, thus realizing the series connection of the first coil 23 and the second coil 24. Finally, the first end of the enameled wire is connected to the positive terminal of the power supply circuit, and the last end is connected to the negative terminal of the power supply circuit, thus forming a closed loop, so that the power supply circuit can simultaneously supply current to the first coil 23 and the second coil 24.

[0087] Since the first end of the first coil 23 is located at the bottom of the first coil 23 and the tail end of the second coil 24 is located at the bottom of the second coil 24, it is easier to connect the first end of the first coil 23 to the positive terminal of the power supply circuit and the tail end of the second coil 24 to the negative terminal of the power supply circuit. This makes the implementation of the magnetic rod assembly 2 simpler and more convenient, and further improves production efficiency.

[0088] Since the tail end of the first coil 23 is located at the top of the first coil 23, and the head end of the second coil 24 is located at the top of the second coil 24, connecting the first coil 23 and the second coil 24 in series at the top of the first coil 23 and the top of the second coil 24 can reduce the use of enameled wire, thereby reducing production costs, and make the connection of the first coil 23 and the second coil 24 simpler, further making the implementation of this magnetic rod assembly 2 simpler and more convenient, and improving production efficiency.

[0089] Since the direction of the magnetic field lines formed in the energized coil is related to the direction of the current winding in the energized coil, it is worth noting in actual implementation that when the first coil 23 is wound from bottom to top around the outer circumference of the first magnetic rod 21 and the second coil 24 is wound from top to bottom around the outer circumference of the second magnetic rod 22, the direction of the current in the first coil 23 and the second coil 24 should be designed according to the right-hand screw rule so that the direction of the magnetic field lines formed in the first coil 23 and the second coil 24 is as described above.

[0090] In this embodiment, the tail end of the second coil 24 extends to the side where the head end of the first coil 23 is located. Specifically, the first coil 23 is first formed by spirally winding enameled wire from bottom to top around the outer periphery of the first magnetic rod 21; then, at the top of the first coil 23, the enameled wire is pulled horizontally to the second magnetic rod 22 and spirally wound from top to bottom around the outer periphery of the first coil 23 to form the second coil 24, thereby realizing the series connection of the first coil 23 and the second coil 24.

[0091] Finally, at the bottom of the formed second coil 24, the enameled wire is pulled horizontally to the first magnetic rod 21 so that the tail end and the head end of the enameled wire are on the same side. Therefore, connecting the head end of the enameled wire to the positive terminal of the power supply circuit and the tail end to the negative terminal of the power supply circuit on the same side makes the connection between the enameled wire and the power supply circuit simpler and more convenient, easier to implement, and the wiring of the power supply circuit is more regular. This makes the implementation of this needle selector structure simpler and more convenient, and further improves production efficiency.

[0092] Furthermore, in this embodiment, a wiring groove 254 is provided on one side of the magnetic rod base 25. When the tail end of the second coil 24 extends to the side where the head end of the first coil 23 is located, the head end of the first coil 23 and the tail end of the second coil 24 are both routed through the wiring groove 254. The wiring groove 254 limits the head end of the first coil 23 and the tail end of the second coil 24, thereby making the wiring of the first coil 23 and the second coil 24 more regular, further simplifying and facilitating the implementation of this needle selector structure and improving production efficiency.

[0093] In this embodiment, each magnetic rod limiting groove 111 has a wiring hole 113 at its bottom. The needle selection base 1 also includes a control board 13, which is located at the bottom of the first base 11 and the second base 12. When the magnetic rod base 25 of the magnetic rod assembly 2 is inserted into the magnetic rod limiting groove 111, the first end of the first coil 23 and the second end of the second coil 24, which are routed through the wiring groove 254, pass through the wiring hole 113 and are fixedly connected to the control board 13. This integrates the first ends of the first coil 23 and the second ends of the second coil 24 of all magnetic rod assemblies 2 onto the control board 13. Finally, the wires are led out through the control board 13 and connected to the positive and negative terminals of the power supply circuit, thereby simplifying the wiring of the needle selector structure and facilitating its implementation.

[0094] In this application, the needle selector 1 also includes a housing 14, within which a cavity is provided. A first seat 11 and a second seat 12 are disposed on top of the housing 14 and fixedly connected to it, thereby securing the first seat 11 and the second seat 12 to the housing 14. Since the control plate 13 is disposed at the bottom of the first seat 11 and the second seat 12, when the first seat 11 and the second seat 12 are fixedly installed on top of the housing 14, the control plate 13 is located within the cavity of the housing 14, thus protecting the control plate 13 from exposure and enhancing the safety of the needle selector structure.

[0095] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0096] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A needle selector structure, characterized in that: The device includes a needle selector (1), multiple magnetic rod assemblies (2) fixedly mounted on the needle selector (1), and multiple spring needles (3) disposed above the multiple magnetic rod assemblies (2). The multiple magnetic rod assemblies (2) are staggered on the needle selector (1), and the multiple spring needles (3) correspond one-to-one with the multiple magnetic rod assemblies (2). The magnetic rod assembly (2) includes a first magnetic rod (21) and a second magnetic rod (22) spaced apart, a first coil (23) disposed on the first magnetic rod (21), and a second coil (24) disposed on the second magnetic rod (22). After the first magnetic rod (21) is magnetized, its top end is N pole, and after the second magnetic rod (22) is magnetized, its top end is S pole. The current flow directions of the first coil (23) and the second coil (24) are opposite. The energized first coil (23) demagnetizes the first magnetic rod (21), and the energized second coil (24) demagnetizes the second magnetic rod (22).

2. The needle selector structure as described in claim 1, characterized in that: The needle selector structure also includes a rotating shaft (4) that is parallel and spaced apart from the needle selector seat (1), and a plurality of spring needles (3) are disposed on the rotating shaft (4) and rotatably connected to the rotating shaft (4).

3. The needle selector structure as described in claim 2, characterized in that: The spring needle (3) includes a main body (311) rotatably connected to the rotating shaft (4) at one end, and a deformation part (312) provided at the bottom of the main body (311). The main body (311) has a rotating hole (313) at one end away from the needle selector (1). The rotating shaft (4) passes through the rotating holes (313) of multiple main bodies (311) so that multiple main bodies (311) are rotatably connected to the rotating shaft (4).

4. The needle selector structure as described in claim 2, characterized in that: Multiple magnetic rod assemblies (2) are arranged in at least two rows on the needle selection seat (1), and the magnetic rod assemblies (2) arranged in adjacent rows are staggered.

5. The needle selector structure as described in claim 4, characterized in that: The needle selection seat (1) includes a first seat body (11) and a second seat body (12) that are assembled together. The first seat body (11) has a first half cavity, and the second seat body (12) has a second half cavity. A plurality of magnetic rod assemblies (2) in the first row are disposed in the first half cavity, and a plurality of magnetic rod assemblies (2) in the second row are disposed in the second half cavity. The plurality of magnetic rod assemblies (2) in the first row and the plurality of magnetic rod assemblies (2) in the second row are staggered.

6. The needle selector structure as described in claim 5, characterized in that: The rotating shaft (4) is located on one side of the first seat (11). The multiple spring needles (3) include multiple long needles (31) and multiple short needles (32). The multiple long needles (31) and multiple short needles (32) are arranged alternately on the rotating shaft (4). The multiple magnetic rod assemblies (2) in the first row are used to attract or release the multiple short needles (32) respectively. The multiple magnetic rod assemblies (2) in the second row are used to attract or release the multiple long needles (31) respectively.

7. The needle selector structure as described in claim 5, characterized in that: The bottom of the first half cavity and the second half cavity are provided with multiple magnetic rod limiting grooves (111), and the top of each half cavity is provided with multiple magnetic rod protrusions (112). The multiple magnetic rod limiting grooves (111) are used to limit the bottom of the multiple magnetic rod assemblies (2) respectively, and the multiple magnetic rod protrusions (112) are used to allow the top of the multiple magnetic rod assemblies (2) to protrude respectively.

8. The needle selector structure as described in claim 1, characterized in that: The magnetic rod assembly (2) further includes a magnetic rod base (25) and a permanent magnet (26) disposed in the magnetic rod base (25). The first magnetic rod (21) and the second magnetic rod (22) are spaced apart on the magnetic rod base (25). The permanent magnet (26) is located between the first magnetic rod (21) and the second magnetic rod (22). The bottom end of the first magnetic rod (21) is in contact with the N pole of the permanent magnet (26), and the bottom end of the second magnetic rod (22) is in contact with the S pole of the permanent magnet (26).

9. The needle selector structure as described in claim 8, characterized in that: The magnetic rod base (25) has a wiring groove (254) on one side, and the ends of the first coil (23) and the second coil (24) are both wired in the wiring groove (254).

10. The needle selector structure as described in claim 7, characterized in that: The needle selection base (1) also includes a control plate (13) disposed at the bottom of the first base (11) and the second base (12), and a housing (14) for fixing the first base (11) and the second base (12). The first base (11) and the second base (12) are fixedly connected to the top of the housing (14). The control plate (13) is disposed in the housing (14). The bottom of the magnetic rod limiting groove (111) is provided with a wiring hole (113). The ends of the first coil (23) and the second coil (24) pass through the wiring hole (113) and are fixed on the control plate (13).

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