Three-system knitting device of flat knitting machine

Abstract

The utility model relates to the field of flat knitting machines, in particular to a three-system knitting device of a flat knitting machine, which comprises a triangular bottom plate, a left triangular system, a middle triangular system and a right triangular system are arranged on the triangular bottom plate, each triangular system corresponds to two needle selectors, and each of the left triangular system and the right triangular system comprises a loop transfer triangular mechanism and a knitting triangular mechanism. The middle triangular system is not provided with a loop transfer triangular mechanism but only provided with a knitting triangular mechanism; the middle knitting triangle mechanism comprises an upper middle triangle and a lower middle triangle, the two sides of the upper middle triangle are respectively provided with a density triangle, and the two sides of the lower middle triangle are provided with needle raising triangles. By optimizing the structure of the three-system knitting device, the knitting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of flat knitting machines, in particular to a three-system knitting device for a flat knitting machine. Background Art

[0002] A flat knitting machine is a double-needle plate latch needle weft knitting machine. Its cam system is like a set of flat cams. The needle feet can enter the groove of the cam, move the cam system, force the needle to make regular up and down movements in the needle groove, and through the action of the needle hook and the needle tongue, the yarn can be woven into a knitted fabric. During the rise of the needle, the coil gradually withdraws from the needle hook, opens the needle tongue, and withdraws the needle tongue to hang on the needle bar; during the descent of the needle, the needle hook hooks the newly placed yarn and pulls it to bend into a coil, while the original coil is removed from the needle hook, and the new coil passes through the old coil and is connected in series with the old coil. The coil strings formed by numerous knitting are connected to each other to form a knitted fabric.

[0003] The above-mentioned knitting needles generally include a hook needle (also called main needle, knitting needle, without a needle butt) at the top for hooking yarn, a needle lifter (also called long needle, guide needle foot, etc.) located in the second section, a spring needle (also called fork needle, etc.) located in the third section, and a selection needle (also called needle selection piece, etc.) that acts with the needle selector.

[0004] In the existing flat knitting machines, it is more common to adopt a structure of 2, 3, or 4 cam systems. The structures of each cam system are consistent and can be woven simultaneously to improve the weaving efficiency. For example, in the prior patents CN202809165U, CN201354397Y and other patents, 2 cam systems are involved. In the prior patents CN116971083A (comparative document 1), CN201343621Y, and CN202099528U, 3 cam systems are involved. However, no matter how many cam systems there are, the structure of each cam system is consistent.

[0005] In the actual production process, the inventor found that when using three sets of triangle systems for weaving, their structure can be optimized to reduce the burden on the machine head and improve weaving efficiency, which led to the creation of this case. Utility Model Content

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A three-system weaving device for a flat knitting machine, comprising:

[0008] The cam base plate is provided with three cam systems, namely, left, middle and right. Each cam system corresponds to two needle selectors. The left and right cam systems both include a transfer cam mechanism and a knitting cam mechanism. The middle cam system does not have a transfer cam mechanism, but only a knitting cam mechanism.

[0009] The middle knitting triangle mechanism comprises an upper Zhongshan triangle and a lower Zhongshan triangle. A density triangle is arranged on both sides of the upper Zhongshan triangle, and needle raising triangles are arranged on both sides of the lower Zhongshan triangle.

[0010] The left, middle, right, top and bottom involved in the above are divided by placing the triangular base flat, with each triangular face facing the observer;

[0011] A cam system generally includes the upper knitting area (including the transfer cam, the needle receiving cam, the Zhongshan cam, the density cam, the needle raising cam, etc., which act on the needle butt of the needle lifter), the middle functional area (also called the work station area, including the tuck presser, the non-woven presser, etc., which act on the needle butt of the spring needle), and the lower needle selection area (including the needle selector, the middle needle selection cam, and the high needle selection cam, which act on the needle butt of the selected needle);

[0012] Among them, the transfer cam and the receiving cam belong to the circle transfer cam mechanism, which are used for the circle transfer function; the Zhongshan cam, the density cam and the cast-on cam belong to the knitting cam mechanism, which are used for tuck knitting and normal knitting (circle knitting).

[0013] Since the middle needle transfer structure is omitted, the weight of the machine head itself is reduced, thereby reducing production energy consumption and reducing the production cost of the machine head.

[0014] Furthermore, the triangles of the left and right triangle systems are arranged symmetrically.

[0015] Because the machine head moves back and forth, it is structurally symmetrical, while also ensuring the balance of the machine head.

[0016] Furthermore, the lower Zhongshan triangle and the needle-starting triangle are of an integrated structure or a split structure.

[0017] Furthermore, at least one of the two needle raising cams in the middle cam system is a movable needle raising cam, and its movable mode is to extend and retract relative to the cam bottom plate.

[0018] Furthermore, in the middle triangle system, a tuck pressing block is correspondingly arranged below the lower middle triangle, and a tight tuck pressing block is correspondingly arranged below the needle raising triangle.

[0019] According to different tuck (loop) knitting requirements, you can choose to work with tuck pressing blocks or tight tuck pressing blocks.

[0020] After adopting the above scheme, the utility model has the following advantages compared with the prior art:

[0021] The transfer cam and the receiving cam on the middle cam system are omitted, which reduces the weight of the entire system, simplifies the structure, and indirectly improves the knitting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the middle triangle system;

[0024] Description of symbols

[0025] Cam base plate 1, needle selector 2, needle transfer cam (31, 33), needle receiving cam (41, 43),

[0026] Upper Zhongshan Triangle (51, 52, 53), Lower Zhongshan Triangle (61, 62, 63),

[0027] Density triangle 7, needle raising triangle 8,

[0028] Tuck pressing block 91, tight tuck pressing block 92, non-woven pressing block 93. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, a three-system weaving device of a flat knitting machine includes a triangular base plate 1, which is divided into left, middle and right triangular systems from left to right based on the needle selection area below and the area where every two needle selectors 2 are located (refer to the vertical dotted lines in the figure).

[0031] Among them, the top of the left and right cam systems are provided with a transfer cam (31, 33), and the lower part of the transfer cam is an upper Zhongshan cam (51, 53). The upper Zhongshan cam (51, 53) and the lower Zhongshan cam (61, 63) form a weaving channel, and a receiving cam (41, 43) is also provided below the lower Zhongshan cam. The receiving cam (41, 43) is used in conjunction with the transfer cam (31, 33). The two sides of the receiving cam are needle raising cams, and the two sides of the upper Zhongshan cam are density cams. Considering that the cam bottom plate 1 is horizontally moved left and right relative to the needle bed, the cams on the left and right cam systems are arranged to be symmetrical, which can not only ensure the consistency of function when moving back and forth, but also ensure the balance of the machine head.

[0032] like Figure 2As shown, the top of the middle triangle system is not provided with a needle turning triangle and a corresponding mountain protection triangle, and the upper Zhongshan triangle 52 and the lower Zhongshan triangle 62 are provided in the knitting area, and no needle receiving triangle is provided. In this embodiment, the lower Zhongshan triangle 62 and the needle raising triangle 8 are made into an integrated structure, and of course, they can also be made into a split structure. The two sides of the upper Zhongshan triangle are the density triangle 7, and the lower part of the density triangle 7 is the needle clearing triangle, which is used for needle clearing. Below the lower Zhongshan triangle are the tuck block 91 and the tight tuck block 92, and below the tuck block and the tight tuck block is the non-woven block 93, which are both used in conjunction with the tuck knitting; the non-woven block is used to suppress the knitting needles that are not involved in the knitting.

[0033] 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 three-system knitting device for a flat knitting machine, characterized in that: include The cam base plate is provided with three cam systems, namely, left, middle and right. Each cam system corresponds to two needle selectors. The left and right cam systems both include a transfer cam mechanism and a knitting cam mechanism. The middle cam system does not have a transfer cam mechanism, but only a knitting cam mechanism. The middle knitting triangle mechanism comprises an upper Zhongshan triangle and a lower Zhongshan triangle. A density triangle is arranged on both sides of the upper Zhongshan triangle, and needle raising triangles are arranged on both sides of the lower Zhongshan triangle.

2. A three-system knitting device for a flat knitting machine according to claim 1, characterized in that: The triangles of the left and right triangle systems are arranged symmetrically.

3. A three-system knitting device for a flat knitting machine according to claim 1, characterized in that: The lower Zhongshan triangle and the needle-starting triangle are of an integrated structure or a split structure.

4. A three-system knitting device for a flat knitting machine according to claim 1, characterized in that: At least one of the two needle raising cams in the middle cam system is a movable needle raising cam, and its movable mode is to extend and retract relative to the cam bottom plate.

5. A three-system knitting device for a flat knitting machine according to claim 1, characterized in that: In the middle triangle system, a tuck pressure block is provided under the lower middle triangle, and a tight tuck pressure block is provided under the needle raising triangle.

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