Flat knitting machine with latch structure

Abstract

This utility model relates to the field of flat knitting machines, specifically to a needle tongue opening structure for a flat knitting machine, including a needle bar, a needle body, and a needle flipping plate. A gap is left between the needle flipping plate and the needle bar and needle body. A limiting part is provided on the needle bar at the position corresponding to the gap. This limiting part can drive the needle tongue of the looping needle to open when the looping needle passes through the gap. By adopting the above solution, it is possible to ensure that the needle tongue is opened during the loop transfer process of the flat knitting machine.

Description

Technical Field

[0001] This utility model relates to the field of flat knitting machines, and specifically refers to a needle opening tongue structure for flat knitting machines. 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 loop-connecting needle 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 needle-opening tongue structure for a flat knitting machine, which led to this invention. Utility Model Content

[0007] The purpose of this invention is to provide a needle tongue opening structure for a flat knitting machine, which ensures that the needle tongue is opened during the knitting machine's rotation process.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] A flat knitting machine needle opening tab structure includes a needle bar, a needle body, and a needle flipping plate.

[0010] There is a gap between the flipping needle plate, the needle bar, and the needle body. A limiting part is provided on the needle bar at the position corresponding to the gap. This limiting part can drive the needle tongue of the looping needle to open when the looping needle enters the gap.

[0011] The flip-up piece 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 by relative width for explanation. When transferring the loop, the hook of the looper needle moves in the gap between the flip-up piece, needle bar, and needle body. The looper needle's tongue needs to be opened first so that the hook of the looper needle can hook the loop and complete the transfer action. Compared to the flexible loop, the rigid limiting part makes it easier for the looper needle's tongue to be opened when moving in the gap, thereby improving the success rate of the transfer.

[0012] Furthermore, the limiting part is a groove, which is an arc-shaped groove or a rectangular groove.

[0013] By using a relatively concave groove on the needle bar as a limiting part, the needle tongue of the looper needle can be opened by the cooperation of the flipping plate and the groove.

[0014] Furthermore, the limiting part is a protrusion, which is located in the gap between the needle flipping piece and the needle bar.

[0015] The function of setting protrusions on the needle bar is essentially the same as the principle of setting grooves. Grooves use the edge of the groove to hold the needle tongue, while protrusions rely on themselves to hold the needle tongue.

[0016] Furthermore, the limiting part is located at the junction of the needle bar and the needle body.

[0017] When the limiting part is close to the junction of the needle bar and the needle body, it can also maintain the gap between the needle flipping plate and the needle bar and needle body.

[0018] Furthermore, the highest point of the limiting part does not contact the turning needle plate when the turning needle plate is not subjected to external force.

[0019] The above structure can better align with the movement trajectory of the needle tongue, making it easier to open the needle tongue. At the same time, it can also ensure that the flipping plate, needle bar, and needle body are not squeezed too tightly, which would prevent the connecting needle from entering.

[0020] Furthermore, the area between the needle flap, needle bar, and needle body is a funnel-shaped opening structure, and the limiting part is located in this opening structure.

[0021] The flared opening structure allows for better acceptance of the inserting coil pin.

[0022] Furthermore, when the limiting part is located at the junction of the needle bar and the needle body, an L-shaped boss is provided on the other side of the limiting part.

[0023] 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 flip-up needle plate.

[0024] 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.

[0025] 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.

[0026] Furthermore, the boss and the limiting part are continuously connected, and their upper surfaces are at the same height.

[0027] By adopting the above solution, this utility model has the following advantages compared with the prior art:

[0028] By setting a limiting part between the needle body and the needle bar, the opening of the looper needle tongue can be better guaranteed. Furthermore, through optimization, sufficient gaps can be maintained between the turn-over plate and the needle bar and needle body to allow the looper needle to enter, thereby improving the knitting quality. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of Example 1;

[0030] Figure 2 yes Figure 1 Remove the diagram showing the flip-up needle piece;

[0031] Figure 3 yes Figure 1 A magnified view of a portion at point A;

[0032] Figure 4 This is a schematic diagram of Example 2;

[0033] Figure 5 This is a partially enlarged view of Example 2;

[0034] Figure 6 This is a partially enlarged view of Example 3;

[0035] Figure 7 This is a partially enlarged view of Example 4;

[0036] Label Explanation

[0037] Needle-turning piece 1, protrusion 11, tip 12 (of the needle-turning piece)

[0038] Needle bar 2, isolation strip 21, rectangular groove 22, arc-shaped groove 23, rivet 24.

[0039] Needle body 3, boss 4, needle tongue 5. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] like Figure 1 As shown, a flat knitting machine needle opening structure includes a needle bar, a needle body 3, 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, and the two are 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 is a relatively concave structure with a protrusion in the middle of the concave structure. Together with the slightly arched needle flipper, it forms an open structure for receiving the loop-connecting needle.

[0043] like Figure 3 As shown, the highest point of protrusion 11 in the figure can be regarded as the vertex, and the two sides of the vertex are smooth sloping edges. That is, protrusion 11 divides the funnel-shaped opening structure between the needle flipper and the needle body and needle bar into two parts, one part is used to receive the entry of the looper needle, and the other part is used to ensure that the looper needle is not squeezed too much when looping. Therefore, preferably, the vertex of protrusion 11 does not contact the needle flipper when the needle flipper 1 is not squeezed by the coil. This can ensure that when the looper needle can slide through the protrusion 11, the needle tongue of the looper needle opens through the protrusion 11, and also ensure that the needle flipper 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 looper needle.

[0044] 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. Together with the arch of the flipping needle plate itself, the other side forms a trumpet-shaped opening structure, which not only makes it easier to move the looping needle, but also better maintains the gap below the flipping needle plate 1.

[0045] 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.

[0046] Example 2

[0047] In this embodiment, the part that interacts with the tab of the connecting pin is a rectangular groove, such as... Figure 4 , 5 As shown, a rectangular groove 22 is provided on the needle bar 2 below the flip-up piece 1 and near the tip 12 of the flip-up piece. When the tongue of the looper needle passes through the gap between the flip-up piece and the needle bar, the rectangular groove 22 will cooperate with the tip of the elastic flip-up piece to open the tongue.

[0048] Example 3

[0049] In this embodiment, the part that acts on the tab of the connecting pin is an arc-shaped groove, such as... Figure 6 As shown, the left end of the arc-shaped groove 23 is higher than the upper surface of the needle body. That is, the side of the arc-shaped groove here is equivalent to the boss 4 and protrusion 11 in embodiment 1, which can also play the role of supporting and opening the needle tongue.

[0050] Example 4

[0051] In this embodiment, a rivet 24 is provided as a protrusion in the gap between the flip-up needle plate and the needle bar. Essentially, it forms a groove-like space on the right side of the rivet 24, which is to open the tongue needle by means of the rivet.

[0052] 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 needle-opening tongue structure for a flat knitting machine, characterized in that: Includes needle bar, needle body, and needle flipper. There is a gap between the flipping needle plate, the needle bar, and the needle body. A limiting part is provided on the needle bar at the position corresponding to the gap. This limiting part can drive the needle tongue of the looping needle to open when the looping needle enters the gap.

2. The opening tongue structure of a flat knitting machine according to claim 1, characterized in that: The limiting part is a groove, which can be an arc-shaped groove or a rectangular groove.

3. The opening tongue structure of a flat knitting machine according to claim 1, characterized in that: The limiting part is a protrusion, which is located in the gap between the needle flipper and the needle bar.

4. A flat knitting machine needle opening tongue structure according to claim 2 or 3, characterized in that: The limiting part is located at the junction of the needle bar and the needle body.

5. A flat knitting machine needle opening tongue structure according to claim 2 or 3, characterized in that: The highest point of the limiting part does not contact the turning needle plate when the turning needle plate is not subjected to external force.

6. A flat knitting machine needle opening tongue structure according to claim 2 or 3, characterized in that: The opening between the needle flap, needle bar, and needle body is a funnel-shaped structure, and the limiting part is located in this opening structure.

7. The opening needle tongue structure of a flat knitting machine according to claim 3, characterized in that: When the limiting part is located at the junction of the needle bar and the needle body, an L-shaped boss is provided on the other side of the limiting part.

8. The opening needle tongue structure of a flat knitting machine according to claim 7, 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.

9. The opening tongue structure of a flat knitting machine according to claim 7, characterized in that: The boss and the limiting part are continuously connected, and their upper surfaces are at the same height.

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