Structure of knitting needle loop transfer reed of flat knitting machine
By setting a needle-pulling protrusion at the junction of the needle plate and the needle body, a trumpet-shaped opening structure is formed, which solves the problem of the loop-connecting needles being difficult to open on a high-density knitting bed, and improves the success rate of loop transfer and knitting quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG RUIFENG INTELLIGENT TECH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-12
AI Technical Summary
On a high-density knitting bed, if the gap between the needle flipper and the needle bar is too small, the latch of the looper needle will be difficult to open, resulting in loop transfer failure.
A needle-pulling protrusion is set at the junction of the needle flipping plate and the needle body to form a trumpet-shaped opening structure. The needle-pulling protrusion can open the needle tongue of the looper needle to ensure that the looper needle can smoothly enter and complete the loop transfer action.
It improves the success rate of loop transfer, enhances the knitting quality, and avoids the problem of loop transfer failure caused by too small gaps.
Smart Images
Figure CN224227356U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of computerized flat knitting machines, and specifically refers to the structure of a knitting needle transfer spring for a flat knitting machine. Background Technology
[0002] Computerized flat knitting machine is a double-needle plate weft knitting machine. Through the knitting head and the cam mechanism set on the cam base plate of the knitting head, the cam system drives the knitting needles set in the needle groove of the needle bed (needle plate) to move up and down along the needle groove during the reciprocating motion of the knitting head along the guide rail. With the cooperation of the cam mechanism and the tensioning mechanism, the knitting of the fabric is completed.
[0003] Among them, knitting needles include composite needles with separate hooks and latches, as well as ordinary hook needles with the latch (needle tongue) pivotally connected below the hook. In the latter structure, the loop-shifting plate (loop-shifting plate) for transferring loops is set on the side of the needle body, with its end extending to the needle bar below the hook and forming a certain gap with the needle bar. That is, the loop-shifting plate is used to expand the loop when the loop is transferred between the front and rear needle beds to facilitate the insertion of the loop-connecting needle.
[0004] Referring to the attached diagram of CN215404847U, after the crochet hook on one side of the knitting needle hooks the yarn, the hook of the looper needle on the other side passes through the spacer plate and the needle bar, moves between the spacer plate and the needle body, and continues to extend upward. At this time, due to the presence of the loop, the latch of the looper needle will be opened under the action of the loop.
[0005] However, with the increasing demands on knitting, the needles on the needle bed are becoming more and more densely distributed, and the pressure of the loops on the needle flippers is greater, resulting in a smaller gap between the needle flippers and the needle bar. In addition, the needle plate is generally longer, which can cause slight deformation of the middle part of the needle bed. This may prevent the loop latch of the looper from being opened by the loop hanging at the junction of the needle bar and the needle body, thus causing the loop transfer to fail.
[0006] Therefore, the inventors conducted further research and developed a structure for a knitting needle shift spring on a flat knitting machine, which led to this invention. Utility Model Content
[0007] The purpose of this invention is to provide a structure for a needle shift spring on a flat knitting machine, which can ensure the success rate of opening the needle tongue during the shift process.
[0008] To achieve the above objectives, the technical solution of this utility model is as follows:
[0009] A structure for a needle transfer spring on a flat knitting machine includes a needle bar, a needle body, and a needle flipper.
[0010] The needle flipper has a needle-pulling protrusion at the junction of the needle bar and the needle body, which can open the needle tongue of the moving loop needle.
[0011] The flip-up plate is located on the side of the needle body and needle bar. The needle body and needle bar are essentially a single structure, but their widths are significantly different. A thread-blocking part (usually an L-shaped bend) is formed on one side of the junction. Therefore, they are defined separately based on their relative widths for explanation. When transferring the loop, the hook of the looping needle moves in the gap between the flip-up plate, needle bar, and needle body. The looping needle's latch needs to be opened first so that the hook can hook the loop and complete the transfer. The presence of the needle-pulling protrusion makes it easier to open the looping needle during the transfer, thereby improving the success rate of the transfer.
[0012] Furthermore, the pin protrusion includes a vertex with smooth, sloping edges on both sides.
[0013] The purpose of the protruding pin is to open the tab of the looper pin, not to obstruct the movement of the looper pin.
[0014] Furthermore, the needle-pulling protrusion extends outward from the side of the needle-turning plate and then folds over; the apex of the needle-pulling protrusion does not contact the needle bar or needle body when the needle-turning plate is not under pressure.
[0015] This allows the needle-pulling protrusion to better align with the movement trajectory of the needle tongue, making it easier to open the needle tongue. At the same time, it also ensures that the needle-turning plate, needle bar, and needle body are not squeezed too tightly, which would prevent the loop needle from entering.
[0016] Furthermore, a trumpet-shaped opening structure is provided between the needle flipper, the needle bar, and the needle body, with the needle-pulling protrusion located in the middle of this opening structure.
[0017] The flared opening structure allows for better reception of the coil pin; the "middle" here is a description of a position relative to the two sides.
[0018] Furthermore, an L-shaped protrusion is provided on one side of the junction of the needle bar and the needle body, and a continuous recessed structure is provided on the other side.
[0019] The boss here is relative to the recess on the side of the needle body. In fact, the boss can be flush with the upper surface of the needle body. The boss is used to support one side of the flipping plate. The continuous recessed structure and the other side of the flipping plate form a trumpet-shaped opening structure.
[0020] Furthermore, a receiving groove is provided on the needle bar, which is used to set the tip of the flipping needle piece; an isolation strip is provided at one end of the receiving groove near the junction.
[0021] The isolation strip here separates the continuous recessed structure between the receiving groove and the needle body and needle bar. The isolation strip supports the tip of the flip-up needle plate and is used to maintain the trumpet-shaped opening structure.
[0022] By adopting the above solution, this utility model has the following advantages compared with the prior art:
[0023] By setting a needle-pulling protrusion on the needle-turning plate, the opening of the looper needle tongue can be better guaranteed, and at the same time, sufficient gaps can be maintained between the needle-turning plate and the needle bar and needle body to allow the looper needle to enter, thereby improving the knitting quality. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the present invention;
[0025] Figure 1-1 yes Figure 1 A magnified view of a section at point A in the middle;
[0026] Figure 2 This is a diagram showing the result after removing the flip-up needle plate;
[0027] Figure 3 This is a schematic diagram of the needle-turning plate;
[0028] Label Explanation
[0029] 1. Turning needle plate; 11. Needle-pulling protrusion; 12. Tip of the turning needle plate.
[0030] Needle bar 2, isolation strip 21, needle body 3, boss 4, needle tongue 5. Detailed Implementation
[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0032] like Figure 1 As shown, a structure of a knitting needle transfer spring on a flat knitting machine includes a needle bar 2, a needle body, and a needle flipper 1. The end of the needle bar 2 is provided with a needle hook, and below the needle hook is a needle tongue 5. The needle body 3 and the needle bar 2 are an integral structure, distinguished by their own width. On one side of their junction is an L-shaped structure for hanging the loop, which is also the position where the loop-connecting needle (the loop-connecting needle is just the knitting needle on the other side) extends out of the loop. On the other side, a continuous recessed structure is provided, which, together with the slightly arched needle flipper 1, forms a trumpet-shaped opening structure for receiving the entry of the loop-connecting needle.
[0033] like Figure 1-1As shown in Figure 3, a needle-pulling protrusion 11 is provided on one side of the needle-turning piece 1 at the junction. The needle-pulling protrusion 11 extends outward from one side of the needle-turning piece 1 and then turns downward. The lowest point of the needle-pulling protrusion 11 in the figure can be regarded as the vertex, and the two sides of the vertex are smooth inclined edges. That is, the needle-pulling protrusion 11 bends towards the concave part of the needle bar 2 and the needle body 3. At the same time, the vertex below the needle-pulling protrusion 11 does not contact the needle bar 2 or the needle body 3 when the needle-turning piece 1 is not squeezed by the coil. This ensures that when the looping needle can slide under the needle-pulling protrusion 11, the needle tongue of the looping needle is opened by the needle-pulling protrusion 11. It also ensures that the needle-turning piece 1 is not squeezed by the coil when the coil is hooked at the junction of the needle bar 2 and the needle body 3, thus facilitating the entry of the looping needle.
[0034] like Figure 2 As shown, preferably, a boss 4 is provided at the L-shaped structure at the junction of the needle bar 2 and the needle body 3. The boss 4 is used to support one side of the flipping needle plate 1 and form a trumpet-shaped opening structure with the other side. This makes it easier to receive the looping needle and also better maintains the gap below the flipping needle plate 1.
[0035] The needle bar 2 has a receiving groove for setting the tip 12 of the flip needle piece 1; an isolation strip 21 is provided at one end of the receiving groove near the junction; the isolation strip 21 here can also separate the receiving groove from the continuous recessed structure between the needle body 3 and the needle bar 2, and the isolation strip 21 supports the tip 12 of the flip needle piece 1 to maintain the trumpet-shaped opening structure.
[0036] The above are merely specific embodiments of this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this utility model are for reference only and are not absolute limitations. Any non-substantial modifications made to this utility model shall be considered as infringing upon the protection scope of this utility model.
Claims
1. A structure for a needle shift spring on a flat knitting machine, comprising a needle bar, a needle body, and a needle-turning plate, characterized in that: The needle flipper has a needle-pulling protrusion at the junction of the needle bar and the needle body, which can open the needle tongue of the moving loop needle.
2. The structure of the needle shift spring on a flat knitting machine according to claim 1, characterized in that: The pin protrusion includes a vertex with smooth, sloping edges on both sides.
3. The structure of a flat knitting knitting needle shift spring according to claim 1 or 2, characterized in that: The needle-pulling protrusion extends outward from the side of the needle-turning plate and then folds over; the apex of the needle-pulling protrusion does not contact the needle bar or needle body when the needle-turning plate is not under pressure.
4. The structure of a knitting needle shift spring on a flat knitting machine according to claim 1, characterized in that: A trumpet-shaped opening structure is provided between the needle flipper, needle bar, and needle body, and the needle-pulling protrusion is located in the middle of the opening structure.
5. The structure of a flat knitting knitting needle shift spring according to claim 1 or 4, characterized in that: An L-shaped protrusion is provided on one side of the junction of the needle bar and the needle body, and a continuous recessed structure is provided on the other side.
6. The structure of a flat knitting needle shift spring according to claim 1 or 4, characterized in that: The needle bar has a receiving groove for setting the tip of the flipping needle piece; an isolation strip is provided at one end of the receiving groove near the junction.