Composite needle latch needle structure

Abstract

The utility model relates to the field of compound needles of knitting machines, in particular to a compound needle latch needle structure, which comprises two needle sheets and a needle guide rod, needle latches are arranged at the end parts of the needle sheets, a connecting part is arranged at the end part of the needle guide rod, the two needle sheets are respectively arranged on two sides of the connecting part, and the thickness of the connecting part plus the thickness of the two needle sheets is smaller than or equal to the thickness of the needle guide rod. After the scheme is adopted, the processing difficulty is reduced, and the purposes of reducing cost and improving efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the field of compound needles for knitting machines, in particular to a compound latch needle structure. Background Art

[0002] A knitting machine is a knitting machine that is mainly used for transverse knitting. It weaves yarn into knitted fabric by controlling the lifting and lowering movement of the knitting needles.

[0003] At present, compound needles are increasingly used in knitting machines. The specified actions are completed through the mutual cooperation of various components in the compound needle. The compound needle generally includes a main needle with a needle hook, and a latch needle that cooperates with the main needle and yarn to complete actions such as looping, looping, gathering, and looping.

[0004] Generally, the latch needle can be arranged in the needle groove of the main needle and move relatively thereto, and two needle pieces are arranged at its end. During the movement relative to the main needle, the needle pieces can be separated from the needle hook of the main needle.

[0005] The function and structure of the latch needle determine that it is difficult to be processed in one piece. Therefore, it is generally divided into a needle guide rod that acts on the driving part and a needle tongue that acts on the coil and cooperates with the hook needle (the needle tongue includes the two needle pieces mentioned above), such as the reference document 1-CN208733302U Figure 2 As shown, the needle guide rod (numbered 4 in the attached figure) and the two needle plates (numbered 5 and 6 in the attached figure) are connected by single-side interlocking riveting, which also has high processing requirements.

[0006] Therefore, the inventor conducted further research and developed a composite needle latch needle structure, which resulted in the present invention. Utility Model Content

[0007] The utility model aims to provide a composite needle latch needle structure, which reduces the difficulty of processing and achieves the purpose of reducing costs and increasing efficiency.

[0008] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0009] A composite needle latch needle structure, comprising

[0010] Two needle sheets and a needle guide rod, the ends of the needle sheets are provided with needle tongues, the ends of the needle guide rod are provided with connecting parts, the two needle sheets are respectively arranged on both sides of the connecting part, and the thickness of the connecting part plus the two needle sheets is less than or equal to the thickness of the needle guide rod.

[0011] By dividing the needle sheet into two thin sheets, each of which is connected to the end of the needle guide rod, the processing requirements can be reduced.

[0012] Furthermore, the needle tongue is flared outwardly relative to the connecting portion.

[0013] Furthermore, the connection structure between the needle piece and the connection part is welding or crimping.

[0014] Since the needle pieces are located on both sides of the connection part, even if the same riveting process as that of comparative document 1 is adopted in its processing technology, its processing difficulty is less than that of the other party.

[0015] Furthermore, the connecting portion of the needle guide rod is also provided with a barb portion, and the barb portion and the needle tongue are respectively located at two ends of the needle sheet.

[0016] The barb portion is used for being installed in coordination with the main needle of the compound needle.

[0017] Furthermore, a U-shaped structure is formed between the barb portion and the guide needle rod, and the side where the barb portion is located is an arc-shaped structure with a narrow opening and a wide middle portion.

[0018] This structure can cooperate with the main needle of the compound needle, so that the latch needle can be stably present in the needle groove and will not move due to the vibration of other components during operation.

[0019] After adopting the above scheme, the utility model has the following advantages compared with the prior art:

[0020] The structure of the latch needle is simplified, the processing difficulty of producing the latch needle is reduced, and the yield rate and production efficiency are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of this embodiment;

[0022] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 yes Figure 2 Side view of

[0024] Figure 4 It is a schematic diagram after the needle piece is separated from the connecting part;

[0025] Description of symbols

[0026] Needle piece 1, needle tongue 11, needle guide rod 2, connecting part 21, barb part 22. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] The compound needle generally comprises a main needle and a latch needle, wherein a needle groove is provided on the main needle, the latch needle can move in the needle groove of the main needle, and the two needle plates 1 of the latch needle can be separated by a hook at the end of the main needle.

[0029] In this embodiment, if Figure 1 , 2As shown, the composite needle tongue 11 needle structure of this embodiment includes a needle sheet 1 and a needle guide rod 2. The end of the needle sheet 1 is provided with a needle tongue 11, and the needle tongue 11 can be regarded as an extension of the needle sheet 1. The main connection relationship between the two needle sheets 1 and the needle guide rod 2 is that the two needle sheets 1 are on the outside and the needle guide rod 2 is on the inside. The needle sheet 1 can be connected to the needle guide rod 2 by laser welding; for specific reference Figure 3 , Figure 4 The part where the needle guide rod 2 is connected to the two needle plates 1 can be called a connecting part 21. The connecting part 21 is narrower than other parts of the needle guide rod 2, that is, Figure 3 As shown, the thickness of the two needle sheets 1 plus the connecting portion 21 is still less than the thickness of other parts of the needle guide rod 2.

[0030] The end of the needle piece 1 is a needle tongue 11, and the needle tongues 11 are relatively expanded outwards, and the gap between them is convenient for the needle hook of the main needle to be inserted.

[0031] like Figure 2 As shown, a barb portion 22 is also provided on one side of the connecting portion 21, and a U-shaped structure is formed between the barb portion 22 and the needle guide rod 2, and the side where the barb portion 22 is located is an arc-shaped structure with a narrow opening and a wide middle portion. The barb portion 22 can be engaged with the main needle, and when not subjected to external force, the barb portion 22 can be engaged in the corresponding limit groove of the main needle (this is also the so-called zero position during knitting, and the entire compound needle is not involved in knitting), and when it needs to participate in knitting, the needle butt of the latch needle is pushed, and the barb portion 22 is pushed out from the limit groove of the main needle, so that the needle tongue 11 of the needle sheet 1 and the yarn are activated.

[0032] The above are only specific embodiments of the present utility model. At the same time, all words such as "upper, lower, left, right, middle" involved in the present utility model are for reference only and are not absolutely limiting. Any non-substantial changes made using the present utility model shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A composite needle latch needle structure, characterized in that: include Two needle sheets and a needle guide rod, the ends of the needle sheets are provided with needle tongues, the ends of the needle guide rod are provided with connecting parts, the two needle sheets are respectively arranged on both sides of the connecting part, and the thickness of the connecting part plus the two needle sheets is less than or equal to the thickness of the needle guide rod.

2. A composite latch needle structure according to claim 1, characterized in that: The needle tongue is flared outwardly relative to the connecting part.

3. A composite needle latch needle structure according to claim 1, characterized in that: The connection structure between the needle piece and the connection part is welding or crimping.

4. A composite latch needle structure according to claim 1, characterized in that: The connecting portion of the needle guide rod is also provided with a barb portion, and the barb portion and the needle tongue are respectively located at two ends of the needle sheet.

5. A composite needle latch needle structure according to claim 1, characterized in that: The barb portion and the guide needle rod are in a U-shaped structure, and the side where the barb portion is located is an arc-shaped structure with a narrow opening and a wide middle portion.

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