Knitting machine needle

Abstract

The utility model discloses a kind of knitting flat knitting machine knitting needles, it is related to computer flat knitting machine technical field.The knitting needle includes needle body and reed, needle body is equipped with recess, reed is installed at recess, its tail part is fixed in the installation slot of needle body, head end extends to the containing platform in needle bar.The support convex part is equipped on reed, support between reed and recess bottom, thereby forming working clearance between the two.In the side close to needle body, reed lower edge is equipped with reed guide surface, corresponding recess lower edge is equipped with needle body guide surface, and the both form an enlarged guide opening at the entrance of working clearance.The support convex part is directly supported on recess bottom by being set, the shape and size of working clearance (guide opening) between reed and needle body can be maintained, to avoid the deformation reduction of working clearance (guide opening) when being pressed;Meanwhile, enlarged guide opening facilitates the smooth penetration of opposite knitting needle needle head.

Description

Technical Field

[0001] This utility model relates to the field of computerized flat knitting machine technology, specifically to a knitting needle for a flat knitting machine. Background Technology

[0002] A flat knitting machine typically consists of two opposing needle beds (a front needle bed and a rear needle bed), each with multiple needles that can reciprocate within the needle slots. Driven by the cam mechanism of the knitting head, the needles perform actions such as looping, gathering, and transferring loops, causing the yarns to interlock to form a fabric.

[0003] Traditional knitting needles generally consist of a needle head, a needle body, and a needle tail. The needle head has a hook for catching yarn and a reversible needle tongue. The needle body usually has an arched spring plate, which forms a needle hole or gap with the needle body and is mainly used to provide elastic support and positioning during actions such as loop transfer. For example, Chinese Patent Publication No. CN202766763U discloses a knitting needle for a flat knitting machine, in which the needle body has an arched spring plate, forming an elongated hole between the spring plate and the needle body.

[0004] As market demand for high-precision, fine-gauge knitted fabrics increases, thinner knitting needles are required. However, when the overall thickness of the knitting needle decreases, the spring sheet on it also becomes thinner. An overly thin and narrow spring sheet is prone to deformation after repeated compression, resulting in a reduction in its arch height. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a novel knitting needle for flat knitting machines. This needle aims to optimize the spring structure, thereby enhancing the rigidity and deformation resistance of the spring structure while meeting functional requirements, and facilitating the smooth insertion of the needle tip of the opposing needle into the working gap between the spring and the needle body.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0007] A knitting needle for a flat knitting machine includes a needle body and a spring. The needle body includes a needle shank and a needle shaft connected in sequence. The width of the needle shank is smaller than the width of the needle shaft, so that the connection between the needle shank and the needle shaft forms a stepped surface. A recess is provided on one wide side of the needle body, and the spring is installed in the recess. The tail of the spring is fixed in the mounting groove of the needle shaft, and the head of the spring extends to the receiving platform of the needle shank. The spring has a supporting protrusion, which is supported between the spring and the bottom of the recess, thereby forming a working gap between the main body of the spring and the needle body.

[0008] Furthermore, on the side near the needle body, the lower edge of the spring (i.e., the edge facing the direction of needle insertion) is provided with a spring guide surface, which is located between the support protrusion and the head end of the spring. Correspondingly, on the side near the spring, the lower edge of the recess is provided with a needle guide surface. The spring guide surface and the needle guide surface work together to form an enlarged guide opening at the entrance of the working gap. This structure facilitates the smooth insertion of the needle tip of the opposing needle into the working gap between the spring and the needle body, thereby facilitating the smooth completion of the loop shifting (needle flipping) action.

[0009] Furthermore, the width of the spring is not less than 80% of the width of the needle bar.

[0010] Furthermore, the distance between the lower edge of the spring and the corresponding lower edge of the needle body is not less than 0.07 mm. This is to prevent the spring from developing defects that could cut the yarn.

[0011] Furthermore, the supporting protrusion is formed by a protrusion created by partial stamping or bending of the spring body.

[0012] Furthermore, the support protrusion is arranged along the width direction of the spring sheet.

[0013] Furthermore, a support platform is provided within the mounting groove, and the tail of the spring is supported on the support platform. The support platform not only helps to form the working gap, but also prevents the spring from deforming towards the needle body, thus ensuring the size of the working gap (preventing the working gap from becoming smaller).

[0014] Furthermore, the head end of the needle bar is provided with a needle hook for hooking yarn and a reversible needle tongue.

[0015] Furthermore, a needle tail is connected to the tail end of the needle body. The thickness of the needle tail is less than the thickness of the needle body, and the connection between the needle tail and the needle body has a transition step surface. This transition step surface is located on one or both sides of the needle body. In actual operation, the needle body is confined within the needle plate component and only performs reciprocating linear motion; the main function of the needle tail is to transmit power. Therefore, without affecting the function of the knitting needle, the thickness of the needle tail can be reduced, thereby forming a transition step surface between the needle tail and the needle body. This not only does not affect the function of the knitting needle but also allows the knitting needle to adapt to finer stitches.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. By setting a support protrusion to directly support the bottom of the concave platform and the pad in the mounting groove, the shape and size of the working gap (guide port) between the spring and the needle body can be maintained, and the deformation of the working gap (guide port) under pressure can be avoided.

[0018] 2. By increasing the width of the spring (the width should not be less than 80% of the needle bar width, or even approximately flush with the edge of the needle body), its bearing area can be increased, effectively dispersing stress, thereby reducing the amount of deformation of the spring under pressure, and maintaining the overall structural rigidity and resistance to bending deformation of the spring under the condition of thinning. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the knitting needle structure.

[0021] Figure 2 This is a schematic diagram of a portion of the needle body (where the spring is installed).

[0022] Figure 3 This is a schematic diagram of the reed structure.

[0023] Figure 4 This is a partial schematic diagram of the lower edge of the knitting needle, showing the assembly relationship between the spring and the concave platform.

[0024] Figure 5 This is a schematic diagram of the needle grooves on the needle plate.

[0025] Explanation of the numbers in the diagram: 11-Needle bar; 111-Needle hook; 112-Needle tongue; 113-Receiving platform; 12-Needle body; 121-Mounting groove; 122-Padded platform; 123-Needle tail; 13-Step surface; 14-Concave platform; 142-Needle body guide surface; 2-Spring; 21-Tail end; 22-Head end; 23-Supporting protrusion; 24-Spring guide surface; 3-Working gap; 31-Long insert; 32-Short insert. Detailed Implementation

[0026] Example 1

[0027] like Figure 1-4 As shown, a knitting needle for a flat knitting machine includes a needle body and a spring 2. The needle body, from front to back (from the knitting end to the drive end), includes a needle shank 11, a needle body 12, and a needle tail 123. The width of the needle shank 11 is designed to be smaller than the width of the needle body 12, and a stepped surface 13 is formed at the connection between the two. The head end of the needle shank 11 is provided with a needle hook 111 for catching yarn and a needle tongue 112 that can rotate around an axis to close the needle hook 111.

[0028] A recessed platform 14 is machined into one wide side of the needle body 1. The spring 2 is a long, thin, strip-shaped metal sheet, which is mounted in the recessed platform 14. Specifically, a mounting groove 121 is provided on the needle body 12, and the tail 21 of the spring 2 is fixed in the mounting groove 121 by welding, riveting, or interference fit. The head 22 of the spring 2 extends forward and is supported on the receiving platform 113 correspondingly provided on the needle bar 11.

[0029] A supporting protrusion 23 protruding towards the needle body 1 is formed on the body of the spring 2 through a stamping process. The supporting protrusion 23 extends along the width direction of the spring 2, and its bottom end abuts against the bottom of the recess 14, thereby supporting the main body of the spring 2 and forming a wedge-shaped or flat working gap 3 extending along the length direction of the knitting needle between it and the bottom of the recess 14. This working gap 3 is mainly used to accommodate the needle tip of the opposing knitting needle to enter during the loop transfer action.

[0030] On the side closest to the needle body, the lower edge of the spring 2 (i.e. Figure 3 The lower edge shown (on the side facing the needle tip) is milled to form a bevel or arc surface, serving as the spring guide surface 24. This spring guide surface 24 is located between the front of the support protrusion 23 (towards the needle bar 11) and the spring tip 22. Correspondingly, on the lower edge of the recess 14, in the area corresponding to the spring guide surface 24, a bevel or arc surface is also milled to form a needle body guide surface 142. The needle body guide surface 142 can extend toward the rear of the support protrusion 23 (away from the needle bar 11) so that it crosses the support protrusion 23.

[0031] The spring guide surface 24 and the needle guide surface 142 spatially cooperate with each other, forming a funnel-shaped or flared guide opening that gradually narrows from the outside to the inside. This guide opening is smoothly connected to the aforementioned working gap 3. When the opposing needle performs a loop shifting action, its needle tip approaches the knitting needle, and the needle tip first contacts this enlarged guide opening. Under the joint guidance of the spring guide surface 24 and the needle guide surface 142, the needle tip can be easily and accurately aligned and slid into the working gap 3.

[0032] In this embodiment, the width of the spring 2 is not less than 80% of the width of the needle bar 11, and the lower edge of the spring 2 is adjacent to the lower edge of the recessed platform 14 region on the needle body. Specifically, the distance between the lower edge of the spring 2 and the lower edge of the recessed platform 14 region on the needle body is more than 0.07 mm. This "wide plate" design significantly increases the lateral dimension of the spring 2 and the contact support area with the needle body, thereby effectively improving the overall rigidity of the spring 2 and significantly reducing its deformation when subjected to pressure perpendicular to the plate surface.

[0033] Example 2

[0034] This embodiment is a further supplementary explanation of the above embodiments.

[0035] like Figure 2 , 4 As shown, one or more slightly raised pads 122 are provided in the mounting groove 121 of the needle body 12. The pads 122 can be integrally formed with the needle body 12. When the tail 21 of the spring 2 is fixed, its lower surface can fit against and support the pad 122. The height of the pad 122 can be designed to match the height of the supporting protrusion 23 to jointly determine the mounting posture of the spring 2 and the size of the working gap 3, so that the spring 2 can maintain the required working gap 3 in the free state, and the installation is more secure, and the working gap can also be prevented from being reduced by pressure.

[0036] Example 3

[0037] This embodiment is a further supplementary explanation of the above embodiments.

[0038] The thickness of the needle tail 123 is less than the thickness of the needle body 13, and a transition step surface 1231 is formed at the connection between the needle tail 123 and the needle body 13. The transition step surface 1231 is provided on one side of the needle body (e.g., Figure 5 As shown), one wide side of the needle tail 123 is flush with the needle body, and the other wide side forms a transition step surface 1231 with the needle body. Of course, the transition step surface 1231 can also be provided on both sides of the needle body (e.g., Figure 1 As shown), the two wide sides of the needle tail 123 and the needle body are formed with transition step surfaces 1231.

[0039] In the existing technology, the minimum thickness of a knitting needle is 0.5mm, and the minimum thickness of the insert 31 on the needle plate is about 0.3mm. Therefore, a knitting needle and an insert 31 require 0.8mm of installation space. For a flat knitting machine with 36 needles per inch, the installation space for a knitting needle and an insert 31 is only 0.7mm. If the traditional installation method is still used, it will be impossible to install them.

[0040] Therefore, a 36-pin-per-inch mounting configuration can be achieved by thinning the needle tip. Specifically, for example... Figure 5 As shown, two long inserts 31 form a double-needle mounting slot. A short insert 32 is placed in the middle of the tail of the double-needle mounting slot. Then, two knitting needles are joined together and installed into the double-needle mounting slot, with the short insert 32 located between the two needle tails 123. In this way, 36 needles per inch can be installed without affecting the function of the knitting needles, so as to accommodate finer stitch pitches.

[0041] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A knitting needle for a flat knitting machine, comprising a needle body and a spring (2), wherein the needle body comprises a needle bar (11) and a needle body (12) connected in sequence, the width of the needle bar (11) being smaller than the width of the needle body (12), such that a stepped surface (13) is formed at the connection between the needle bar (11) and the needle body (12); characterized in that, A recess (14) is provided on one wide side of the needle body, and the spring (2) is installed on the recess (14); the tail (21) of the spring (2) is fixed in the mounting groove (121) of the needle body (12), and the head (22) of the spring (2) extends to the receiving platform (113) of the needle bar (11); the spring (2) has a supporting protrusion (23), which is supported between the spring (2) and the bottom of the recess (14), thereby forming a working gap (3) between the main body of the spring (2) and the needle body. On the side near the needle body, the lower edge of the spring (2) is provided with a spring guide surface (24), which is located between the support protrusion (23) and the head end (22) of the spring (2); on the side near the spring (2), the lower edge of the recess (14) is provided with a needle guide surface (142); the spring guide surface (24) and the needle guide surface (142) work together to form an enlarged guide opening (4) at the entrance of the working gap (3).

2. The knitting needle for a flat knitting machine according to claim 1, characterized in that, The width of the spring (2) is not less than 80% of the width of the needle bar (11).

3. The knitting needle for a flat knitting machine according to claim 1, characterized in that, The distance between the lower edge of the spring and the lower edge of the corresponding position on the needle body is not less than 0.07 mm.

4. The knitting needle for a flat knitting machine according to claim 1, characterized in that, The supporting protrusion (23) is formed by a protrusion formed by partial stamping or bending of the spring sheet (2) body.

5. The knitting needle for a flat knitting machine according to claim 4, characterized in that, The support protrusion (23) is arranged along the width direction of the spring (2).

6. The knitting needle for a flat knitting machine according to claim 1, characterized in that, A platform (122) is provided in the mounting groove (121), and the tail (21) of the spring (2) is supported on the platform (122).

7. The knitting needle for a flat knitting machine according to claim 1, characterized in that, The needle bar (11) is provided with a needle hook (111) for hooking yarn and a reversible needle tongue (112) at the head end.

8. The knitting needle for a flat knitting machine according to claim 1, characterized in that, The needle body (12) is connected to a needle tail (123) at its tail end, and the thickness of the needle tail (123) is less than the thickness of the needle body (12).

9. The knitting needle for a flat knitting machine according to claim 8, characterized in that, The connection between the needle body (12) and the needle tail (123) has a transition step surface (1231), which is provided on one or both sides of the needle body.

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