needle selector

Abstract

The utility model belongs to textile machinery technical field discloses a kind of needle selector. The needle selector includes shell, magnetic conductive support sheet and permanent magnet, magnetic conductive support sheet and permanent magnet are fixed in shell, and iron core coil is embedded and fixed on magnetic conductive support sheet, and four groups of permanent magnets are arranged on magnetic conductive support sheet, four groups of permanent magnets are distributed around iron core coil, permanent magnet forms permanent magnet field and acts on the contact surface of magnetic conductive support sheet, to drive knitting needle movement, iron core coil energization can produce the superimposed magnetic field opposite to permanent magnet field, to make knitting needle can reset;Adopt permanent magnet and iron core coil synergistic effect, replace existing mechanical needle selection mode, the element used is less, and the volume occupied is small, realize needle selection action using magnetic field, response speed is far faster than the physical movement process of mechanical needle selector, also can accurately control knitting needle according to current change, to flexibly adapt complex pattern weaving.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to a needle selector. Background Technology

[0002] Knitting is a technique that uses knitting needles to bend yarn into loops and connect them to form fabric. The needle selector is the core device in knitting that controls the movement trajectory of the knitting needles. Its function is to select specific knitting needles to participate in loop forming, loop gathering, or no knitting operations, thereby forming knitted fabrics with different patterns and structures.

[0003] In the existing technology, the needle selector uses mechanical means to control the movement of the knitting needles. It requires the use of related components for material linkage, which has the disadvantages of large volume, slow response speed, and difficulty in flexibly realizing complex knitting.

[0004] Therefore, there is an urgent need to provide a needle selector to solve the problems of existing mechanical needle selectors, such as large size, slow response speed, and difficulty in flexibly implementing complex knitting. Utility Model Content

[0005] The purpose of this invention is to provide a needle selector to solve the problems of existing mechanical needle selectors, such as large size, slow response speed, and difficulty in flexibly implementing complex knitting.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a needle selector, including a housing, a magnetic support plate, and a permanent magnet. The magnetic support plate and the permanent magnet are fixed to the housing. An iron core coil is embedded and fixed on the magnetic support plate. There are four sets of permanent magnets. Two sets of permanent magnets are provided on each side of the magnetic support plate. The iron core coil is located between the two sets of permanent magnets on the same side.

[0008] The magnetically conductive support sheet has a contact surface for contacting the knitting needle. All the permanent magnets are used to form a permanent magnetic field and act on the contact surface to move the knitting needle. The iron core coil is energized to generate a superimposed magnetic field opposite to the permanent magnetic field to reset the knitting needle.

[0009] As an optional technical solution for a needle selector, the housing includes two opposing magnetic cover plates, the magnetic support plate, the iron core coil and the permanent magnet are all sandwiched between the two magnetic cover plates, and the permanent magnet is attracted to the magnetic support plate on one side and the magnetic cover plate on the other side.

[0010] As an alternative technical solution for the needle selector, the housing also includes a base having an inclined mounting surface, wherein one of the magnetic cover plates is detachably connected to the inclined mounting surface.

[0011] As an optional technical solution for the needle selector, it also includes a fastener. The two magnetic cover plates are a first cover plate and a second cover plate, respectively. The first cover plate is located between the second cover plate and the base. One end of the fastener abuts against the second cover plate, and the other end of the fastener passes through the first cover plate and is threadedly connected to the base.

[0012] As an optional technical solution for the needle selector, the permanent magnet is provided with a first fixing hole, and the magnetic support plate is provided with a second fixing hole. The first fixing hole and the second fixing hole are correspondingly arranged for the fastener to pass through.

[0013] As an optional technical solution for the needle selector, it also includes a limiting block. The limiting block is provided on both sides of the magnetic support plate. The limiting block is sandwiched between the magnetic support plate and the corresponding magnetic cover plate. The limiting block is located on the side of the permanent magnet close to the contact surface to stop the permanent magnet.

[0014] As an optional technical solution for a needle selector, the limiting block is provided with a positioning post, the magnetic cover plate is provided with a positioning hole, and the positioning post is inserted into the positioning hole.

[0015] As an optional technical solution for needle selector, the magnetic support sheet is a one-piece molded structure, and the contact surface is provided at one end of the magnetic support sheet extending outside the housing. The contact surface is a continuous and smoothly transitioning arc surface.

[0016] As an optional technical solution for the needle selector, all the permanent magnets have the same magnetic poles on the side closest to the magnetically conductive support sheet; and / or, the permanent magnets are either an integral structure or a split structure.

[0017] As an optional technical solution for the needle selector, the permanent magnets are arranged opposite each other on both sides of the magnetic support plate, and the two sets of permanent magnets on the same side are symmetrically arranged on both sides of the iron core coil.

[0018] Beneficial effects:

[0019] This utility model provides a needle selector, which includes a housing, a magnetic support plate, and permanent magnets. The magnetic support plate and permanent magnets are fixed to the housing. An iron core coil is embedded and fixed on the magnetic support plate. There are four sets of permanent magnets, with two sets of permanent magnets on each side of the magnetic support plate. The iron core coil is located between the two sets of permanent magnets on the same side. The magnetic support plate has a contact surface for contacting the knitting needle. All the permanent magnets are used to form a permanent magnetic field and act on the contact surface to move the knitting needle. The iron core coil is energized to generate a superimposed magnetic field opposite to the permanent magnetic field to reset the knitting needle. By setting a magnetic support plate on the shell, with an iron core coil embedded and fixed in the magnetic support plate, and setting four sets of permanent magnets on the magnetic support plate, the four sets of permanent magnets are distributed around the iron core coil. The permanent magnets form a permanent magnetic field and act on the contact surface of the magnetic support plate, thereby driving the movement of the knitting needle. When the iron core coil is energized, it can generate a superimposed magnetic field opposite to the permanent magnetic field, thereby enabling the knitting needle to return to its original position. The combination of permanent magnets and iron core coils replaces the existing mechanical needle selection method. It uses fewer components and occupies less space. The needle selection action is achieved by using a magnetic field, and the response speed is much faster than the physical movement process of a mechanical needle selector. It can also accurately control the knitting needle according to the change of current, so as to flexibly adapt to complex knitting patterns. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the needle selector provided in Embodiment 1 of this utility model;

[0021] Figure 2 This is a side view of the needle selector provided in Embodiment 1 of this utility model;

[0022] Figure 3 This is an exploded view of the needle selector provided in Embodiment 1 of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the needle selector provided in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of an existing magnetically conductive support sheet;

[0025] Figure 6 This is a schematic diagram of the structure of the magnetically conductive support sheet provided in Embodiment 1 of this utility model;

[0026] Figure 7 This is a partial structural schematic diagram of the needle selector provided in Embodiment 2 of this utility model.

[0027] In the picture:

[0028] 100. Existing magnetically conductive support sheet; 101. Main support sheet; 102. Fixing sheet; 103. Existing contact surface;

[0029] 10. Housing; 11. Base; 111. Inclined mounting surface; 12. Magnetic guide cover plate; 121. First cover plate; 122. Second cover plate; 123. Positioning hole; 21. Magnetic guide support plate; 211. Contact surface; 212. Second fixing hole; 22. Iron core coil; 30. Permanent magnet; 301. First fixing hole; 40. Limiting block; 401. Positioning post. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] Example 1

[0035] like Figures 1 to 4As shown, this embodiment provides a needle selector, which includes a housing 10, a magnetic support plate 21, and permanent magnets 30. The magnetic support plate 21 and permanent magnets 30 are fixed to the housing 10. An iron core coil 22 is embedded and fixed on the magnetic support plate 21. There are four sets of permanent magnets 30, with two sets of permanent magnets 30 on each side of the magnetic support plate 21. The iron core coil 22 is located between the two sets of permanent magnets 30 on the same side. The magnetic support plate 21 has a contact surface 211 for contacting the knitting needle. All the permanent magnets 30 are used to form a permanent magnetic field and act on the contact surface 211 to make the knitting needle move. The iron core coil 22 is energized to generate a superimposed magnetic field opposite to the permanent magnetic field to reset the knitting needle.

[0036] By setting a magnetic support plate 21 on the housing 10, and embedding and fixing an iron core coil 22 on the magnetic support plate 21, and setting four sets of permanent magnets 30 on the magnetic support plate 21, the four sets of permanent magnets 30 are distributed around the iron core coil 22. The permanent magnets 30 form a permanent magnetic field and act on the contact surface 211 of the magnetic support plate 21, thereby driving the knitting needle to move. When the iron core coil 22 is energized, it can generate a superimposed magnetic field opposite to the permanent magnetic field, thereby enabling the knitting needle to reset. The permanent magnets 30 and the iron core coil 22 work together to replace the existing mechanical needle selection method. The number of components used is small and the volume is small. The needle selection action is achieved by using a magnetic field, and the response speed is much faster than the physical movement process of the mechanical needle selector. It can also accurately control the knitting needle according to the change of current to flexibly adapt to complex pattern knitting.

[0037] In this embodiment, the magnetic support plate 21 has a mounting hole in the middle, and the iron core coil 22 is partially embedded and fixed in the mounting hole; four sets of permanent magnets 30 are located on the outer periphery of a single iron core coil 22, and the magnetic field generated by the single iron core coil 22 has high consistency and fast response speed. The permanent magnets 30 are of one-piece structure; the magnetic poles of all permanent magnets 30 are the same on the side closest to the magnetic support plate 21. The permanent magnets 30 with the one-piece structure are simple in structure, wear-resistant, and have strong magnetic field stability.

[0038] By designing all permanent magnets 30 to have the same magnetic pole on one side near the magnetic support plate 21, a closed magnetic circuit will be formed when the magnetic poles of the permanent magnets 30 on the same side face the magnetic support plate 21. The magnetic support plate 21 can effectively guide the magnetic flux, making the magnetic field more concentrated, thereby improving the effective utilization rate of the magnetic field. The arrangement of magnetic poles on the same side will produce a magnetic field superposition effect and form a uniform strong magnetic field region at the magnetic support plate 21, thereby enhancing the attraction force of the magnetic support plate 21 on the knitting needle.

[0039] It is understandable that the specific structure of the iron core coil 22 can be designed with reference to existing technology, and the iron core coil 22 can be snapped and fixed to the magnetic support plate 21.

[0040] Optionally, permanent magnets 30 are arranged opposite each other on both sides of the magnetically conductive support plate 21, and two sets of permanent magnets 30 on the same side are symmetrically arranged on both sides of the iron core coil 22. By arranging permanent magnets 30 opposite each other on both sides of the magnetically conductive support plate 21, and symmetrically arranging two sets of permanent magnets 30 on the same side of the magnetically conductive support plate 21 on both sides of the iron core coil 22, it helps to ensure the balance of the magnetic field and avoid local magnetic saturation or magnetic force deviation caused by uneven distribution of magnetic lines of force.

[0041] See Figure 5 The existing magnetic support plate 100 includes a main support plate 101 and a fixing plate 102. The fixing plate 102 is welded and fixed to the notch of the main support plate 101. The main support plate 101 and the fixing plate 102 are combined to form the existing contact surface 103. However, this design results in an interface at the connection between the main support plate 101 and the fixing plate 102 in the existing contact surface 103, which affects the movement of the knitting needle.

[0042] See Figure 6 In this embodiment, the magnetic support sheet 21 is an integrally formed structure. One end of the magnetic support sheet 21 extending outside the housing 10 has a contact surface 211, which is a continuous and smoothly transitioning arc surface. By extending one end of the magnetic support sheet 21 outside the housing 10 and providing the contact surface 211, the magnetic support sheet 21 can concentrate and conduct magnetic field energy, ensuring that the magnetic field energy acts precisely on the knitting needle. Designing the magnetic support sheet 21 as an integrally formed structure results in a continuous and smoothly transitioning arc surface, preventing the movement of the knitting needle from being affected by discontinuities or unevenness of the contact surface 211.

[0043] The contact surface 211 is designed as a continuous and smoothly transitioning arc surface. The arc surface design helps the magnetic support plate 21 to form a more uniform magnetic field distribution during electromagnetic needle selection, ensuring precise control of the needle movement. The arc surface design can also increase the contact area with the needle, avoiding local stress concentration caused by sharp corners or flat contact, thereby reducing needle wear. The needle has reciprocating motion during the needle selection process, and the continuous and smoothly transitioning arc surface can provide a smoother guide trajectory and reduce motion resistance.

[0044] The housing 10 includes two magnetically conductive cover plates 12 arranged opposite to each other. The magnetically conductive support plate 21, the permanent magnet 30 and at least part of the iron core coil 22 are sandwiched between the two magnetically conductive cover plates 12. The permanent magnet 30 is attracted to the magnetically conductive support plate 21 on one side and to the magnetically conductive cover plate 12 on the other side.

[0045] Two magnetically conductive cover plates 12 are provided, with the permanent magnet 30 adsorbed on both sides by the magnetically conductive support plate 21 and the magnetically conductive cover plate 12, respectively. This helps ensure structural stability and reduces displacement of the permanent magnet 30 due to vibration or other factors. When the magnetically conductive support plate 21, the permanent magnet 30, and at least part of the iron core coil 22 are sandwiched between the two magnetically conductive cover plates 12, and the permanent magnet 30 is adsorbed on one side by the magnetically conductive support plate 21 and on the other side by the magnetically conductive cover plate 12, the magnetic lines of force of the permanent magnet 30 will preferentially pass through the magnetically conductive support plate 21 to form a closed loop, reducing magnetic flux leakage and avoiding energy loss due to magnetic field dispersion. The magnetically conductive support plate 21 and the magnetically conductive cover plate 12 are made of magnetically conductive material, such as iron.

[0046] The housing 10 also includes a base 11 having an inclined mounting surface 111, to which a magnetic cover plate 12 is detachably attached. In this embodiment, the base 11 is made of a non-magnetic material, including but not limited to aluminum and copper; the inclined mounting surface 111 extends downward at an inclination toward the contact surface 211.

[0047] By setting an inclined mounting surface 111 on the base 11, one of the magnetic cover plates 12 can be detachably connected to the inclined mounting surface 111. This makes it easy to adjust the relative position of the permanent magnet 30 and the iron core coil 22 using the inclined mounting surface 111, so that the magnetic field direction meets the actual needle selection needs. The inclined mounting surface 111 can avoid direct collision between the knitting needle and the magnetic support plate 21 during the movement of the knitting needle, reducing the risk of mechanical wear.

[0048] Optionally, the needle selector also includes a fastener, and two magnetic cover plates 12 are a first cover plate 121 and a second cover plate 122, respectively. The first cover plate 121 is located between the second cover plate 122 and the base 11. One end of the fastener abuts against the second cover plate 122, and the other end of the fastener passes through the first cover plate 121 and is threadedly connected to the base 11.

[0049] Fasteners are used to install the first cover plate 121 and the second cover plate 122 on the base 11, which allows for quick assembly and disassembly and ensures the accuracy of the installation position of the first cover plate 121 and the second cover plate 122.

[0050] In this embodiment, the permanent magnet 30 is provided with a first fixing hole 301, and the magnetic support plate 21 is provided with a second fixing hole 212. The first fixing hole 301 and the second fixing hole 212 are correspondingly arranged for fasteners to pass through. By providing corresponding holes on the magnetic support plate 21 and the permanent magnet 30, when the fastener is installed, one end of the fastener abuts against the second cover plate 122, and the other end of the fastener passes through the holes in the magnetic support plate 21 and the permanent magnet 30, then passes through the first cover plate 121 and is fixed to the base 11, further ensuring the stability of the installation position of the magnetic support plate 21 and the permanent magnet 30.

[0051] Specifically, there are two fasteners, which correspond to two sets of permanent magnets 30 located on the same side of the magnetic support plate 21. Each permanent magnet 30 has a first fixing hole 301 at its center. Correspondingly, the magnetic support plate 21 has two second fixing holes 212.

[0052] Optionally, the needle selector also includes a limiting block 40. The magnetic support plate 21 is provided with limiting blocks 40 on both sides. The limiting blocks 40 are sandwiched between the magnetic support plate 21 and the corresponding magnetic cover plate 12. The limiting blocks 40 are located on the side of the permanent magnet 30 near the contact surface 211 to stop the permanent magnet 30.

[0053] A limiting block 40 is set between the magnetic support plate 21 and the magnetic cover plate 12. The limiting block 40 stops the permanent magnet 30, thereby limiting the relative position of the permanent magnet 30 and the contact surface 211. This can optimize the distribution path of magnetic lines of force in the magnetic support plate 21 and prevent the magnetic field from being too concentrated due to the distance between the permanent magnet 30 and the contact surface 211 being too close.

[0054] In this embodiment, one limiting block 40 is located between the magnetically conductive support plate 21 and the first cover plate 121, and another limiting block 40 is located between the magnetically conductive support plate 21 and the second cover plate 122; the limiting blocks 40 are made of plastic material. The limiting blocks 40 made of plastic material will not have a significant impact on the magnetic field. Plastic material can be molded with high precision through injection molding process and is relatively lightweight.

[0055] Optionally, the limiting block 40 has a protruding positioning post 401, and the magnetic cover plate 12 has a positioning hole 123, in which the positioning post 401 is inserted. Positioning is achieved by inserting the positioning post 401 into the positioning hole 123, which can reduce positioning deviations caused by shaking or misalignments caused by uneven force. The structure is simple and easy to install.

[0056] In this embodiment, the limiting block 40 is provided with two positioning posts 401 at intervals on the side facing the first cover plate 121 or the second cover plate 122, and the positioning holes 123 are provided in a one-to-one correspondence with the positioning posts 401.

[0057] Example 2

[0058] The needle selector provided in this embodiment has a basically the same structure as the needle selector provided in Embodiment 1, except that the permanent magnet 30 is different. This embodiment will not describe the same structure as Embodiment 1 again.

[0059] like Figure 7As shown, in this embodiment, the permanent magnet 30 has a split structure, which means that it is composed of multiple independent magnets combined by mechanical fixing and is not a single integral structure. The permanent magnet 30 includes a substrate and multiple magnets embedded in the grooves of the substrate. By setting the permanent magnet 30 as a split type, each independent magnet can be processed and installed separately, which is convenient for maintenance and partial replacement; the synergistic effect of multiple magnets can form a more uniform magnetic field distribution, further improving the needle selection accuracy; the spacing or arrangement of the magnets can be adjusted according to actual needs to optimize the magnetic field, and it can also be applied to confined spaces or complex knitting requirements.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A needle selector, characterized in that, The device includes a housing (10), a magnetic support plate (21), and a permanent magnet (30). The magnetic support plate (21) and the permanent magnet (30) are fixed to the housing (10). An iron core coil (22) is embedded and fixed on the magnetic support plate (21). There are four sets of permanent magnets (30). Two sets of permanent magnets (30) are provided on both sides of the magnetic support plate (21). The iron core coil (22) is located between the two sets of permanent magnets (30) on the same side. The magnetic support sheet (21) has a contact surface (211) for contacting the knitting needle. All the permanent magnets (30) are used to form a permanent magnetic field and act on the contact surface (211) to make the knitting needle move. The iron core coil (22) is energized to generate a superimposed magnetic field opposite to the permanent magnetic field to reset the knitting needle.

2. The needle selector according to claim 1, characterized in that, The housing (10) includes two opposing magnetic cover plates (12), the magnetic support plate (21), the permanent magnet (30) and at least part of the iron core coil (22) are sandwiched between the two magnetic cover plates (12), the permanent magnet (30) is attracted to the magnetic support plate (21) on one side and the magnetic cover plate (12) on the other side.

3. The needle selector according to claim 2, characterized in that, The housing (10) also includes a base (11) having an inclined mounting surface (111), wherein one of the magnetic cover plates (12) is detachably connected to the inclined mounting surface (111).

4. The needle selector according to claim 3, characterized in that, It also includes fasteners. The two magnetic cover plates (12) are a first cover plate (121) and a second cover plate (122), respectively. The first cover plate (121) is located between the second cover plate (122) and the base (11). One end of the fastener abuts against the second cover plate (122), and the other end of the fastener passes through the first cover plate (121) and is threadedly connected to the base (11).

5. The needle selector according to claim 4, characterized in that, The permanent magnet (30) is provided with a first fixing hole (301), and the magnetic support plate (21) is provided with a second fixing hole (212). The first fixing hole (301) and the second fixing hole (212) are provided to allow the fastener to pass through.

6. The needle selector according to claim 2, characterized in that, It also includes a limiting block (40), and the limiting block (40) is provided on both sides of the magnetic support plate (21). The limiting block (40) is sandwiched between the magnetic support plate (21) and the corresponding magnetic cover plate (12). The limiting block (40) is located on the side of the permanent magnet (30) near the contact surface (211) to stop the permanent magnet (30).

7. The needle selector according to claim 6, characterized in that, The limiting block (40) has a protruding positioning post (401), and the magnetic cover plate (12) has a positioning hole (123), and the positioning post (401) is inserted into the positioning hole (123).

8. The needle selector according to any one of claims 1-7, characterized in that, The magnetic support sheet (21) is a one-piece molded structure. The magnetic support sheet (21) extends to one end outside the housing (10) and has a contact surface (211). The contact surface (211) is a continuous and smoothly transitioning arc surface.

9. The needle selector according to any one of claims 1-7, characterized in that, All of the permanent magnets (30) have the same magnetic poles on the side near the magnetically conductive support sheet (21); and / or, the permanent magnets (30) are either an integral structure or a split structure.

10. The needle selector according to any one of claims 1-7, characterized in that, The permanent magnets (30) are arranged opposite each other on both sides of the magnetic support plate (21), and the two sets of permanent magnets (30) on the same side are symmetrically arranged on both sides of the iron core coil (22).

Images