Push needle and needle bed of flat knitting machine

Abstract

The push needle of the flat knitting machine comprises a push needle rod, a needle butt is arranged on the upper surface of the push needle rod, a pressing arm is arranged on one side of the needle butt, the needle butt is higher than the pressing arm, a plurality of positioning portions are arranged on the upper surface of the pressing arm, and an avoiding groove is formed between the pressing arm and the push needle rod. The needle bed of the flat knitting machine comprises a needle plate, a plurality of inserting pieces are arranged on the needle plate, the push needles are arranged between every two adjacent inserting pieces, push needle limiting steel wires are arranged between the inserting pieces in a penetrating mode, and the push needle limiting steel wires are located above the pressing arms and force the pressing arms to be bent towards the side of the push needle rod, so that the push needle rod is kept in contact with the needle plate, and the push needles are pushed to the needle plate. And the positioning part is matched with the push needle limiting steel wire to provide a positioning effect for the push needle. The whole structure is compact, the size of the whole machine is small, the push needle can be kept in contact with the needle plate, and the moving stability of the push needle is improved; and the positioning effect of the push pin positioning part can also be improved, the situation of positioning disability is avoided, and the manufacturing cost of equipment can also be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flat knitting machines, and in particular relates to a push needle and a needle bed of a flat knitting machine. Background Art

[0002] A knitting machine generally includes a knitting triangle seat, a needle bed, a transmission system, and a roller winding mechanism, among which the needle bed is the core component of the knitting machine. The entire knitting process is completed by the up and down movement of the knitting needles on the needle bed. The needle bed includes a needle plate, and a panel groove is opened on the plane of the needle plate. The panel is inlaid in the inlay groove on the needle plate. A needle groove is formed between two adjacent panels. The knitting needle, push needle and selection needle are arranged in the needle groove in sequence. The push needle is arranged between the knitting needle and the selection needle, and slides back and forth in the needle groove, and is limited in the needle groove by a steel wire.

[0003] A knitting assembly of a knitting machine disclosed in CN115387012A includes a needle bed, a plurality of inserts on the needle bed, a needle slot formed between adjacent inserts, a knitting needle and a needle selection foot (selection needle) in the needle slot, an auxiliary needle (push needle) between the knitting needle and the needle selection foot, a first needle butt is provided at one end of the auxiliary needle close to the needle selection foot, a push needle rod and a clamping arm are provided on the first needle butt, the clamping arm is an elastic arm, a clamping groove for a first steel wire to pass through is provided between the push needle rod and the clamping arm, the spacing of the clamping grooves is smaller than the diameter of the first steel wire, the first steel wire is pressed against the surface of the push needle rod, so that the push needle rod keeps in contact with the needle bed, thereby preventing the auxiliary needle from detaching from the needle bed during movement and improving the stability of the movement of the auxiliary needle; a first needle butt is provided on the side of the clamping arm facing the push needle rod A limiting notch and a second limiting notch, the first limiting notch and the second limiting notch are used to engage the first steel wire. During the movement of the auxiliary stitch, when the first limiting notch moves to the first steel wire, the first limiting notch engages with the first steel wire under the action of the elasticity of the clamp arm itself. Similarly, when the second limiting notch moves to the first steel wire, the second limiting notch engages with the first steel wire under the action of the elasticity of the clamp arm itself. The first limiting notch and the second limiting notch can play a positioning role by cooperating with the first steel wire, and can ensure the accuracy of the position of the auxiliary stitch during movement. It can be seen from the accompanying drawings that one side of the auxiliary stitch is limited by the first steel wire, and the other side is limited by the selector stitch to prevent the auxiliary stitch from leaving the needle bed during movement.

[0004] The first steel wire reciprocates in the clamping groove between the clamp arm and the needle pusher rod, which can keep the needle pusher rod in contact with the needle bed and improve the stability of the movement of the auxiliary stitches to a certain extent, but the auxiliary stitches will still be unstable. In particular, when the first steel wire and the needle pusher rod are worn, a gap will appear between the needle pusher rod and the needle bed, which will cause the auxiliary stitches to be unstable, affecting the entire knitting process.

[0005] Although the spacing of the clamping grooves is smaller than the diameter of the first steel wire, the elastic clamping arm can be deformed to allow the first steel wire to be clamped into the clamping groove and to make the first steel wire close to the push-needle rod; but the height of the first steel wire is relatively fixed. If the first steel wire is worn and becomes thinner or the push-needle rod is worn and becomes narrower, although the elastic clamping arm can be deformed to continue to make the first steel wire close to the push-needle rod, the push-needle rod will also be lifted upward, and it is impossible to ensure that the push-needle rod maintains contact with the needle bed, which will cause a gap between the push-needle rod and the needle bed, affecting the smooth operation of the auxiliary stitches.

[0006] The clamping arm on the first needle butt is easily deformed upward, which causes the clamping groove spacing to be larger than the diameter of the first steel wire, affecting the positioning function of the first limiting notch and the second limiting notch; in severe cases, the positioning function will be disabled. Utility Model Content

[0007] The purpose of the utility model is to provide a push needle and a needle bed of a knitting machine, which can not only keep the push needle in contact with the needle bed and improve the moving stability of the push needle, but also improve the positioning effect of the push needle limiting notch and avoid the situation where positioning fails.

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

[0009] The push needle of a knitting machine includes a push needle rod, a needle butt is arranged on the upper surface of the push needle rod, a pressure arm is arranged on one side of the needle butt, the pressure arm is an elastic arm, the needle butt is higher than the pressure arm, a plurality of positioning parts are arranged on the upper surface of the pressure arm (the side away from the push needle rod), and an avoidance groove is arranged between the pressure arm and the push needle rod.

[0010] The positioning parts are provided with two, including a first positioning part and a second positioning part.

[0011] The head end of the pressure arm is provided with a bending portion, and the bending portion faces the push needle rod. The bending portion facilitates the steel wire to pass through the head end of the pressure arm.

[0012] A pressure arm reinforcement portion is arranged between the pressure arm and the needle butt, and while increasing the length of the pressure arm, the pressure arm reinforcement portion can increase the strength of the pressure arm and avoid deformation of the pressure arm.

[0013] The needle pushing rod head end is provided with a needle pushing rod reinforcement part, which increases the contact area between the needle pushing rod and the knitting needle, which is conducive to the needle pushing rod to better push the knitting needle.

[0014] The needle bed of a knitting machine includes a needle plate, which is provided with a plurality of inserts. A push needle is arranged between two adjacent inserts. A push needle limiting wire is passed through the inserts. The push needle limiting wire is located above the pressure arm and forces the pressure arm to bend and deform toward the push needle rod side, thereby keeping the push needle rod in contact with the needle plate. The positioning part cooperates with the push needle limiting wire to provide a positioning effect for the push needle.

[0015] The push needle is arranged between the knitting needle and the selection needle, the knitting needle and the selection needle are located between two adjacent inserting plates, and the tail of the push needle is limited by the selection needle.

[0016] The needle selecting head end is provided with a needle pushing portion, which is pressed against the needle pushing rod.

[0017] Above the needle pushing part, a needle selecting and limiting steel wire is passed through between the inserting pieces, and the needle selecting and limiting steel wire is located above the needle pushing part.

[0018] The utility model provides a pressure arm on the push pin, and the push pin limiting wire forces the pressure arm to bend toward the needle selection rod (press down), thereby keeping the push pin in contact with the needle plate, avoiding the appearance of a gap between the push pin rod and the needle plate, which affects the smooth operation of the push pin; multiple positioning parts on the upper surface of the pressure arm provide a positioning effect for the push pin; for example, the first positioning part and the second positioning part are sequentially arranged on the upper surface of the pressure arm, and the first positioning part is located at the head end of the pressure arm, and when the selector needle is in the initial position, the first positioning part engages with the push pin limiting wire, and when the selector needle is in the pre-selector needle position, the second positioning part engages with the push pin limiting wire, thereby providing a positioning effect for the push pin, thereby ensuring the accuracy of the push pin position.

[0019] The utility model has a compact overall structure and a small size. It can not only keep the push needle in contact with the needle plate, improving the stability of the push needle's movement, but also improve the positioning effect of the push needle positioning part, avoiding the situation of positioning failure, and reducing the manufacturing cost of the equipment. In addition, the utility model does not need to set a spring needle, so the running resistance of the knitting needle is small, and the required driving power is also small, which can save energy consumption and achieve the effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 Schematic diagram of push pin structure.

[0022] Figure 2 It is a structural schematic diagram of the push pin in the initial position.

[0023] Figure 3 It is a structural schematic diagram of the push needle being in the preselected needle position. DETAILED DESCRIPTION

[0024] like Figure 1-3 As shown, the needle bed of the knitting machine includes a needle plate 21, and the needle plate 21 includes a plurality of inserts 22. A needle groove is formed between two adjacent inserts 22. A push needle 1 is arranged in the needle groove between two adjacent inserts 22. A knitting needle 2 and a selection needle 3 are also arranged in the needle groove between two adjacent inserts 22, and the push needle 1 is located between the knitting needle 2 and the selection needle 3.

[0025] like Figure 1As shown, the push needle 1 includes a push needle rod 11, and a needle butt 12 is arranged on the upper surface of the push needle rod 11, and the needle butt 12 is located in the middle of the push needle rod 11. A pressure arm 13 is arranged on one side of the needle butt 12, and the pressure arm 13 is lower than the height of the needle butt 12, so as to drive the push needle 1 to slide in the needle groove through the needle butt 12. The pressure arm 13 is an elastic arm, and an avoidance groove is reserved between the pressure arm 13 and the push needle rod 11, and the avoidance groove faces the head end of the push needle 1 (that is, the knitting needle 2 side). A convex portion 14 is provided at the head end of the arm 13, one end of the convex portion 14 is connected to the head end of the pressure arm 13, and the other end is provided with a bending portion 15, the bending portion 15 is bent toward the push needle rod 11, the convex portion 14 is higher than the upper surface of the pressure arm 13, the transition portion between the convex portion 14 and the bending portion 15 constitutes a first positioning portion 16, and the transition portion between the convex portion 14 and the pressure arm 13 constitutes a second positioning portion 17. Both the first positioning portion 16 and the second positioning portion 17 utilize the height of the convex portion 14 to achieve a positioning effect.

[0026] A pressure arm reinforcement portion 18 is provided between the pressure arm 13 and the needle butt 12 , and a needle push rod reinforcement portion 19 is provided at the head end of the needle push rod 11 .

[0027] A push pin limit wire 41 and a needle selection limit wire 42 are passed through the inserts. The push pin limit wire 41 is located above the pressure arm 13 and forces the pressure arm 13 to bend and deform toward the push pin rod 11, thereby keeping the push pin rod 11 in contact with the needle plate 21. The first positioning portion 16 and the second positioning portion 17 cooperate with the push pin limit wire 41 to provide a positioning effect for the push pin. Figure 2 As shown, when the selection needle is in the initial position, the first positioning portion 16 is engaged with the push needle limiting wire 41, as shown in FIG. Figure 3 As shown, when the selection needle is in the pre-selection needle position, the second positioning portion 17 is engaged with the push needle limiting wire 41 to provide a positioning effect for the push needle and ensure the accuracy of the push needle position.

[0028] A needle pusher 31 is provided at the head end of the needle selector 3, and the needle pusher 31 is pressed against the tail of the needle pusher rod 11. The needle selector 3 pushes the pusher 1 to move through the needle pusher 31. The needle selector limit wire 42 is located above the pusher 31 to limit the tail of the pusher 1.

[0029] The knitting needle 2 is located at the head end of the push needle 1, and the push needle rod reinforcement part 19 increases the contact area between the push needle rod and the knitting needle, which is conducive to the push needle rod to better push the knitting needle.

[0030] The above embodiments do not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. The push needle of the knitting machine is characterized by: It comprises a needle push rod, the upper surface of which is provided with a needle butt, a pressure arm is provided on one side of the needle butt, the needle butt is higher than the pressure arm, a plurality of positioning parts are provided on the upper surface of the pressure arm, and an avoidance groove is provided between the pressure arm and the needle push rod.

2. The push needle of the flat knitting machine according to claim 1, characterized in that: There are two positioning parts.

3. The push needle of the flat knitting machine according to claim 1, characterized in that: The head end of the pressure arm is provided with a bending portion, and the bending portion faces the push needle rod.

4. The push needle of the flat knitting machine according to claim 1, characterized in that: A pressure arm reinforcement portion is arranged between the pressure arm and the needle butt.

5. The push needle of the flat knitting machine according to claim 1, characterized in that: The push pin rod head end is provided with a push pin rod reinforcement portion.

6. A needle bed of a flat knitting machine, characterized in that: A push needle for a flat knitting machine comprising any one of claims 1-5.

7. The needle bed of the flat knitting machine according to claim 6, characterized in that: It includes a needle plate, which is provided with a plurality of inserts. A push pin is arranged between two adjacent inserts. A push pin limiting wire is passed through the inserts. The push pin limiting wire is located above the pressure arm and forces the pressure arm to bend toward the push pin rod side so that the push pin rod maintains contact with the needle plate. The positioning part cooperates with the push pin limiting wire to provide a positioning effect for the push pin.

8. The needle bed of the flat knitting machine according to claim 7, characterized in that: The push needle is arranged between the knitting needle and the selection needle, the knitting needle and the selection needle are located between two adjacent inserting plates, and the tail of the push needle is limited by the selection needle.

9. The needle bed of the flat knitting machine according to claim 8, characterized in that: The needle selecting head end is provided with a needle pushing portion, which is pressed against the needle pushing rod.

10. The needle bed of the flat knitting machine according to claim 9, characterized in that: Above the needle pushing part, a needle selecting and limiting steel wire is passed through between the inserting pieces, and the needle selecting and limiting steel wire is located above the needle pushing part.

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