Main needle structure of compound needle of knitting machine

Abstract

The utility model relates to the field of knitting machines, in particular to a main needle structure of a compound needle of a knitting machine, which comprises a needle hook and a main needle bar, the needle hook is arranged at the end of the main needle bar, the end of the needle hook is a hook tip, a needle groove is arranged on the end face of the main needle bar corresponding to the hook tip, a through avoiding groove is arranged at the bottom of the needle groove, and a guide inclined plane is arranged at one end of the needle groove close to the needle hook. And the inclination direction of the guide inclined surface is from the avoiding groove to the hook tip part. According to the technical scheme, the main needle structure of the compound needle is improved, the machining difficulty is reduced, and the purposes of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the field of knitting machines, in particular to a main needle structure of a compound needle of a knitting machine. 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] Such as TW528822B Figure 5 As shown in the figure, the main needle is provided with a needle groove, a spacer is arranged in the needle groove, and the two needle plates of the latch needle are respectively arranged in the left and right needle grooves of the spacer. However, this structure is extremely difficult to process. The thickness of the entire composite needle is relatively thin, and two uniform needle grooves need to be milled on the metal material of this thickness. If you are not careful, the entire main needle will be scrapped; and when moving, the latch needle is subject to greater resistance, and sufficient power is required to push it, so that the needle heel of the latch needle is subject to a greater burden, causing the latch needle to be easily damaged.

[0006] Therefore, the inventor conducted further research on this issue and developed a main needle structure for a compound needle of a knitting machine, which resulted in the present invention. Utility Model Content

[0007] The utility model aims to provide a main needle structure of a compound needle of a knitting machine, 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] The main needle structure of the compound needle of a knitting machine includes a needle hook and a main needle rod. The needle hook is arranged at the end of the main needle rod. The end of the needle hook is a hook tip. A needle groove is provided on the end face of the main needle rod corresponding to the hook tip. A through avoidance groove is provided at the bottom of the needle groove. A guide slope is provided at one end of the needle groove close to the needle hook. The inclination direction of the guide slope is from the avoidance groove to the hook tip.

[0010] The bottom of the needle groove is opened to form an avoidance groove, which can ensure that the needle groove is easier to mill out during processing, and also allow the latch needle to be nearly flush with the bottom of the needle groove when moving in the needle groove. At this time, the latch needle is subject to less resistance, and compared with the case with a groove bottom, the latch needle can be designed to be wider with the avoidance groove, and its structural strength is higher, and it is less likely to be damaged during operation; the guide bevel makes the cooperation between the latch needle and the needle hook do not require the isolation plate described in the background technology; at the same time, the existence of the guide bevel is utilized to prevent the yarn from being damaged by being clamped between the latch needle and the needle hook.

[0011] Furthermore, a reinforcing member is arranged in the avoidance groove, and the reinforcing member enables the avoidance groove to be arranged at intervals in the length direction of the main needle rod.

[0012] Taking into account the strength of the main needle rod, a reinforcing member may be provided in the avoidance groove so that the avoidance groove is divided into several sections.

[0013] Furthermore, the reinforcement member is an arc-shaped groove bottom, and the arc-shaped groove bottom divides the avoidance groove into two.

[0014] The arc groove bottom needs to cooperate with the latch needle to ensure that there is space for yarn storage between the needle hook and the latch needle.

[0015] Furthermore, the portion of the main needle rod with the needle groove is the needle groove portion, one end of the needle groove portion is the needle hook, and the other end of the needle groove portion is a solid portion, and a limiting rod is arranged at the solid portion; a limiting protrusion is arranged at the end of the limiting rod on the side close to the needle groove portion.

[0016] The limiting rod needs to have a certain length so that it has a certain elasticity so that it can be engaged with the limiting part of the latch needle.

[0017] Furthermore, the avoidance groove can accommodate the latch needle of the compound needle and make the latch needle flush with the bottom of the main needle rod.

[0018] The space vacated by the avoidance groove can reduce the resistance of the latch needle while widening the overall structure of the latch needle, thereby strengthening the structural strength of the latch needle and ensuring that it is less susceptible to damage.

[0019] Furthermore, a convex arc edge is provided on the needle groove wall at one end of the needle groove away from the needle hook.

[0020] The raised arc edge is also used to ensure that there is space for yarn storage between the needle hook and the latch needle.

[0021] Furthermore, the length of the limiting rod is greater than or equal to 5 mm.

[0022] The limiting rod needs to have a certain length so that it has a certain elasticity, so that it can engage with the limiting part of the tongue needle, continuously apply pressure, and allow the tongue needle to be pushed out from the limiting protrusion.

[0023] Furthermore, the inclination angle of the guiding slope relative to the groove bottom is 15-35°.

[0024] If the inclination angle is too flat, the stroke of the latch needle will increase, affecting the knitting efficiency. If the inclination angle is too steep, the sliding load of the latch needle will increase, and the contact part will be easily worn.

[0025] Furthermore, a recessed positioning arc is provided below the limiting protrusion.

[0026] The positioning arc is used to better coordinate the engagement and entry and exit of the latch needle.

[0027] After adopting the above scheme, the utility model has the following advantages compared with the prior art:

[0028] On the premise of satisfying the function of the compound needle itself, the processing is made simpler, and an avoidance groove is used to avoid the latch needle, so that the latch needle can have a stronger structural strength during design, and the latch needle can be guided to the needle hook in combination with the guide bevel; at the same time, an elastic limit rod can be used in combination with the latch needle for cooperation and limitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the embodiment of the utility model cooperating with a latch needle;

[0030] Figure 2 It is a schematic diagram of an embodiment of the utility model;

[0031] Figure 3 It is a cross-sectional view of an embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of the avoidance groove on the main needle bar;

[0033] Figure 5 is a schematic diagram of another embodiment in which a raised arc edge is provided on the needle groove wall;

[0034] Figure 6 It is a schematic diagram of the yarn storage space;

[0035] Figure 7 is a schematic diagram of yet another embodiment;

[0036] Description of symbols

[0037] Main needle 1, needle hook 11, hook tip 111;

[0038] Main needle bar 12, needle groove 121, guide slope 1211, raised arc edge 1212,

[0039] Avoidance groove 122, arc groove bottom 1221, limiting rod 123, limiting protrusion 1231,

[0040] Positioning arc 124;

[0041] Latch needle 2, yarn storage space 3. DETAILED DESCRIPTION

[0042] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] like Figure 1 As shown, this is a schematic diagram of the matching relationship between this embodiment and the latch needle, that is, the matching relationship between the main needle 1 and the latch needle 2.

[0044] The main needle 1 (i.e., the main needle structure of the compound needle of the knitting machine) includes a needle hook 11 and a main needle rod 12. The needle hook 11 is arranged at the end of the main needle rod 12. The needle hook 11 gradually gathers at the hook tip 111 from both sides to ensure that the two needle plates of the latch needle can be separated by the needle hook; a needle groove 121 is provided on the end face of the main needle rod 12 corresponding to the hook tip 111, and an avoidance groove 122 is provided at the bottom of the needle groove 121. In this embodiment, the avoidance groove is a through rectangular hole, and the part where the avoidance groove 122 is located can be regarded as the bottom of the needle groove 121 does not exist; a guide slope 1211 is provided on the side of the needle groove 121 close to the needle hook 11, and the guide slope is used to guide the latch needle to slide toward the needle hook. Figure 3 In the embodiment shown, the guide slope 1211 is inclined upward from left to right from the avoidance groove 122 to the hook tip 111. When the needle tongue of the latch needle 2 slides in the needle groove 121, the needle tongue of the latch needle 2 is guided to move toward the needle hook 11. When the avoidance groove exists, the main needle rod avoids the latch needle, reduces the resistance to the latch needle, and makes the latch needle have a wider structure, making it less likely to be damaged. It can also be guided to the needle hook through the guide slope, so that a yarn storage space 3 is left between the latch needle and the needle hook (reference Figure 6 ).

[0045] In this embodiment, there are two avoidance grooves 122, which are spaced apart at the bottom of the groove in the length direction of the main needle rod 12, and an arc-shaped groove bottom 1221 is arranged between the two avoidance grooves. The existence of the arc-shaped groove bottom 1221 can enhance the strength of the main needle rod itself, and at the same time, it also plays a role in lifting the latch needle, thereby ensuring that there is a yarn storage space 3 between the latch needle and the needle hook.

[0046] For the convenience of distinction, the portion of the main needle bar 12 with the needle groove 121 is called the needle groove portion, one side of the needle groove portion is the needle hook 11, and the other side of the needle groove portion is called the solid portion. Figure 3A longer limiting rod 123 is arranged at the solid part on the left side of the needle groove part. The rod length of the limiting rod generally needs to be greater than or equal to 5 mm. There is a certain distance between the limiting rod 123 and the solid part, so that the limiting rod 123 has a certain elasticity. A limiting protrusion 1231 is arranged at the end of the limiting rod 123 on the side close to the needle groove part, and the limiting protrusion 1231 can be used to engage the tongue needle 2. When not subject to external force, the tongue needle 2 can be engaged in the limiting protrusion, and when subjected to external force, the tongue needle 2 is separated from the limiting protrusion.

[0047] As a preference, Figure 5 As shown, a raised arc edge 1212 is provided on the needle groove wall at one end of the limiting rod 123, and the raised arc edge is also used to assist in lifting the latch needle so that a yarn storage space 3 is left between the latch needle and the needle hook.

[0048] As a preference, Figure 7 As shown, a recessed positioning arc 124 is provided below the limiting protrusion 1231 to better cooperate with the engagement and entry and exit of the tongue needle.

[0049] 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. The main needle structure of the compound needle of the knitting machine is characterized by: It includes a needle hook and a main needle rod. The needle hook is arranged at the end of the main needle rod. The end of the needle hook is a hook tip. A needle groove is provided on the end face of the main needle rod corresponding to the hook tip. A through avoidance groove is provided at the bottom of the needle groove. A guide slope is provided at one end of the needle groove close to the needle hook. The inclination direction of the guide slope is from the avoidance groove to the hook tip.

2. The main needle structure of the compound needle of the knitting machine according to claim 1, characterized in that: A reinforcing piece is arranged in the avoidance groove, and the reinforcing piece enables the avoidance groove to be arranged at intervals in the length direction of the main needle rod.

3. The main needle structure of the compound needle of a knitting machine according to claim 2, characterized in that: The reinforcement member is an arc-shaped groove bottom, which divides the avoidance groove into two parts.

4. The main needle structure of the compound needle of a knitting machine according to claim 1, characterized in that: The part of the main needle rod with the needle groove is the needle groove part, one end of the needle groove part is the needle hook, the other end of the needle groove part is a solid part, and a limiting rod is arranged at the solid part; the limiting rod is provided with a limiting protrusion at the end of the side close to the needle groove part.

5. The main needle structure of the compound needle of a knitting machine according to claim 1, characterized in that: The avoidance groove can accommodate the latch needle of the compound needle and make the latch needle flush with the bottom of the main needle rod.

6. The main needle structure of the compound needle of a knitting machine according to claim 1, characterized in that: A convex arc edge is arranged on a needle groove wall at one end of the needle groove away from the needle hook.

7. The main needle structure of the compound needle of a knitting machine according to claim 4, characterized in that: The length of the limiting rod is greater than or equal to 5 mm.

8. The main needle structure of a compound needle for a knitting machine according to claim 1, characterized in that: The inclination angle of the guide slope relative to the groove bottom is 15-35°.

9. The main needle structure of a compound needle for a knitting machine according to claim 4, characterized in that: A recessed positioning arc is arranged below the limiting protrusion.

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