Stepped curve needle selection triangle structure

Abstract

The utility model relates to a stepped curve needle selection triangle structure which comprises a triangle assembly. The triangular assembly is provided with a needle groove matched with a middle needle foot on the middle needle. The needle groove consists of a coincident needle groove and at least two needle running grooves with different depths; and the coincident needle groove is communicated with each needle passing groove. The utility model has the beneficial effects that the curve of the triangular component is made into a step type, which is like a stair; double-layer steps are the lowest choice, and if the space is enough, three-layer steps can also be adopted. Needle selection can only be carried out once through a traditional trigonometric curve, and needle selection can be carried out at least twice through the stepped triangle. The step type triangle breaks through the traditional thought that the triangle on the same path can only be used for manufacturing two wool lengths at most. Due to the design of the stepped curve, at least three threads with different lengths can be knitted in the same path.

Description

Technical Field

[0001] The utility model relates to the technical field of large circular knitting machines, in particular to a stepped curve needle selection triangle structure. Background Art

[0002] At present, plush circular knitting machines on the market are relatively mature products, and the commonly used jacquard triangle curves are all integral curves. Integral jacquard triangle curves: only one needle selection can be performed, that is, the choice of knitting through or not through this curve. Because only one selection can be performed, there is only one choice for knitting different hair lengths.

[0003] The specific instructions are as follows: Figure 1 As shown, a middle needle groove 51 is provided below the jacquard cam 50; the middle needle pin 11 of the middle needle 10 can selectively cooperate with the middle needle groove 51 to achieve a knitting action;

[0004] like Figure 2 As shown, the jacquard piece assembly includes a jacquard piece 40, an intermediate needle 10, and a hook hook 20 arranged from bottom to top; the jacquard piece 40, the intermediate needle 10, and the hook hook 20 are all long pieces; the jacquard piece 40 assembly is arranged in a needle groove 61 of a syringe 60, and a plurality of needle grooves 61 are arranged on the syringe 60; the jacquard piece 40 includes a jacquard piece body, a groove 41 arranged at the head of the jacquard piece body, and a needle selection pin 42 arranged at one side edge of the jacquard piece body and capable of cooperating with a needle selector (not shown in the figure) to drive the jacquard piece 40 to move radially toward the axis; the intermediate needle 10 includes an intermediate needle body and an intermediate needle pin 11 arranged on the side edge of the intermediate needle body on the same side as the needle selection pin 42, and the intermediate needle pin 11 can be engaged with the intermediate needle body The needle groove 51 cooperates to allow the middle needle 10 to push the hook needle 20 to move; the hook needle 20 includes a hook needle body, a hook head 22 provided at the head of the hook needle body, and a hook needle foot 21 provided on the hook needle body on the same side as the needle selection foot 42; the tail of the middle needle 10 is embedded in the groove 41 of the head of the jacquard piece body, and the head of the middle needle 10 is hooked with the tail of the hook needle 20; in some structures, the hook needle 20 is located at the middle part of one side of the hook head 22 and is formed with a knife groove 23 for accommodating a cutting knife 30 along the length direction of the hook needle 20; the cutting knife 30 is provided with a cutting knife foot 31 on the same side as the needle selection foot 42; the jacquard triangle 50 is provided with a cutting knife needle groove 53 and a hook needle groove 52 respectively cooperating with the cutting knife foot 31 and the hook needle foot 21;

[0005] When working, Figure 2As shown, the selected jacquard piece 40 sinks into the needle groove of the needle cylinder 60 (moves to the left in the figure) under the action of the needle selection pin 42 and the needle selector, and at the same time drives the middle needle 10 stuck in the groove 41 of the jacquard piece 40 to sink into the needle groove 61 of the needle cylinder 60 (moves to the left in the figure), so that the middle needle pin 11 arranged on the side of the middle needle 10 is separated from the middle needle groove 51 and only moves in translation with the needle cylinder 60; see Figure 3 , the position A in the figure is the approximate position where the needle selector (not shown in the figure) acts on the jacquard sheet 40, at which time the middle needle pin 11 is separated from the middle needle slot 51, so the middle needle slot 51 cannot limit the middle needle pin 11, and the movement trajectory of the middle needle pin 11 becomes a movement trajectory tending to be horizontal on the left side of the position A; the movement trajectory of the hook needle pin 21 and the cutter pin 31 is also shown in the figure, which is a common movement in the field and is not described in detail here;

[0006] On the contrary, if Figure 4 As shown, the unselected jacquard piece 40 will not drive the middle needle 10 to sink into the needle groove 61 of the needle cylinder 60, and the middle needle pin 11 protrudes from the needle groove 61 and cooperates with the middle needle groove 51, so that the middle needle pin 11 will move along the middle needle groove 51; see Figure 5 In the figure, the lower track B is the movement track of the middle needle pin 11 along the middle needle groove 51. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In order to solve the above problems in the prior art, the utility model provides a stepped curved needle selection cam structure.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0011] The stepped curved needle selection cam structure is characterized by: comprising a cam assembly; the cam assembly is provided with a needle groove that matches the middle needle pin on the middle needle; the needle groove is composed of a coincident needle groove and at least two needle grooves of different depths; the coincident needle groove is connected to each needle groove.

[0012] Furthermore, the needle groove includes a first needle groove and a second needle groove of different depths; the depth of the first needle groove is greater than the depth of the second needle groove; and the first needle curve of the first needle groove is located below the second needle curve of the second needle groove.

[0013] Furthermore, the needle groove includes a first needle groove, a second needle groove, and a third needle groove of three different depths; the depth of the first needle groove is greater than the depth of the second needle groove; the depth of the second needle groove is greater than the depth of the third needle groove; the first needle curve of the first needle groove is located below the second needle curve of the second needle groove; the second needle curve of the second needle groove is located below the third needle curve of the third needle groove.

[0014] Furthermore, the overlapping needle groove is a straight groove arranged obliquely.

[0015] Furthermore, the depth of the overlapping needle groove is the same as the depth of the first needle groove.

[0016] Furthermore, the depth of the overlapping needle groove and the depth of the first needle groove are the deepest depths of the needle groove.

[0017] Furthermore, the distance that the middle needle pin extends out from the edge of the middle needle body is less than or equal to the depth of the overlapping needle groove.

[0018] Furthermore, the upper end surface of the first needle groove is a first abutting surface that cooperates with the pin of the middle needle; the upper end surface of the second needle groove is a second abutting surface that cooperates with the pin of the middle needle.

[0019] Furthermore, the upper end surface of the first needle groove is a first abutment surface that cooperates with the middle needle pin; the upper end surface of the second needle groove is a second abutment surface that cooperates with the middle needle pin; the upper end surface of the third needle groove is a third abutment surface that cooperates with the middle needle pin.

[0020] (III) Beneficial effects

[0021] The beneficial effect of the utility model is that the curve of the triangular component is made into a stepped shape, just like a staircase. A double-layer staircase is the lowest choice, and a three-layer staircase is also possible if there is enough space.

[0022] Needle selection times: The traditional triangle curve can only select the needle once, while the stepped triangle of the utility model can select the needle at least twice.

[0023] Multiple choices of plush knitting lengths in the same route: The utility model of the stepped triangle breaks the traditional idea that the same triangle can only have two lengths of hair. The stepped curve design can achieve at least three different lengths of knitting in the same route. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the jacquard triangle structure of the prior art;

[0026] Figure 2 It is a structural schematic diagram of a jacquard piece being selected by a needle selector in the prior art;

[0027] Figure 3 It is a schematic diagram of the motion trajectory of the jacquard piece after being selected by the needle selector in the prior art;

[0028] Figure 4 It is a structural schematic diagram of the prior art in which the jacquard piece is not selected by the needle selector;

[0029] Figure 5 It is a schematic diagram of the motion trajectory of the jacquard piece in the prior art after it is not selected by the needle selector;

[0030] Figure 6 This is a schematic diagram of the triangular assembly structure of the utility model;

[0031] Figure 7 It is the AA cross-sectional view of the utility model;

[0032] Figure 8 It is a structural schematic diagram of the jacquard piece of the utility model that is not selected by the needle selector;

[0033] Fig. 9 It is a schematic diagram of the motion trajectory of the jacquard piece of the utility model after it is not selected by the needle selector;

[0034] Fig.10 It is a structural schematic diagram of the jacquard piece of the utility model being selected by the needle selector to perform the first displacement;

[0035] Fig.11 It is a schematic diagram of the motion trajectory of the jacquard piece of the utility model after being selected by the needle selector for the first displacement;

[0036] Fig.12 It is a structural schematic diagram of the jacquard piece of the utility model being selected by the needle selector for the second displacement;

[0037] Fig.13 It is a schematic diagram of the motion trajectory of the jacquard piece of the utility model after being selected by the needle selector for the second displacement;

[0038] Fig.14This is a schematic diagram of the triangular assembly structure of another embodiment of the utility model;

[0039] Fig.15 It is the BB cross-sectional view of the utility model;

[0040] Description of reference numerals:

[0041] 10. Middle needle; 11. Middle needle pin; 20. Crochet; 21. Crochet pin; 22. Hook head; 23. Knife groove; 30. Cutting knife; 31. Cutting knife pin; 40. Jacquard piece; 41. Groove; 42. Needle selection pin; 50. Jacquard triangle; 51. Middle needle slot; 52. Crochet slot; 53. Cutting knife slot; 60. Syringe; 61. Syringe slot; 100. Triangle assembly; 101. Overlapping slot; 110. First needle slot; 111. First needle curve; 112. First abutment surface; 120. Second needle slot; 121. Second needle curve; 122. Second abutment surface; 130. Third needle slot; 131. Third needle curve; 132. Third abutment surface. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] like Figure 6-7 As shown, the stepped curved needle selection cam structure includes a cam assembly 100, on which a needle groove is provided to match the middle needle pin 11 on the middle needle 10; the needle groove is composed of a coincident needle groove 101 and at least two needle grooves of different depths; the coincident needle groove 101 is connected to each needle groove;

[0046] In this embodiment, two needle grooves with different depths are provided for illustration, and the needle grooves include a first needle groove 110 and a second needle groove 120; Figure 6 As shown, the overlapping needle groove 101 is an inclined straight groove, the first needle groove 110 is located below the overlapping needle groove 101 and is connected to the overlapping needle groove 101 and forms a first needle curve 111 obliquely to the left. When the middle needle pin 11 works in this needle groove, it will first move along the oblique line at the upper end of the overlapping needle groove 101 and then move along the first needle curve 111; Figure 7 As shown, since the depth D1 of the first needle groove 110 is greater than the depth D2 of the second needle groove 120, the middle needle pin 11 will be abutted by the first abutting surface 112 and cannot enter the second needle groove 120, so it can move along the needle groove formed by the overlapping needle groove 101-the first needle groove 110;

[0047] The second needle groove 120 is connected to the overlapping needle groove 101, and the first needle curve 111 of the first needle groove 110 is located below the second needle curve 121 of the second needle groove 120; the depth of the second needle groove 120 is less than the depth of the first needle groove 110; when the middle needle pin 11 works in this needle groove, it will first move along the upper oblique line of the overlapping needle groove 101 and then move along the second needle curve 121. The reason why the middle needle pin 11 enters the second needle groove to move is that at this time, the extension distance of the middle needle pin 11 is less than or equal to D1. Since the second needle curve 121 is located above the first needle curve 111, the middle needle pin 11 can first slide into the second needle groove 120, thereby moving along the second needle curve 121;

[0048] It should be noted that the overlapped needle slot 101 may be Figure 6The first needle groove 110 is connected to the bottom of the overlapping needle groove 101 and extends to the left side in a curved manner, and the second needle groove 120 is connected to the middle of the overlapping needle groove 101; the overlapping needle groove 101 has a maximum depth D1 and is equal to the depth D1 of the first needle groove 110, so that the middle needle pin 11 can enter the first needle groove 110 more smoothly from the overlapping needle groove 101; in one embodiment, the depth of the overlapping needle groove 101 and the depth D1 of the first needle groove 110 are the deepest depths of the needle grooves; in one embodiment, the maximum extension of the middle needle pin 11 When the distance is less than the smaller value between the depth of the overlapped needle groove 101 and the depth of the first needle groove 110, the depth of the overlapped needle groove 101 may not be equal to the depth of the first needle groove 110, so the outer end of the middle needle pin 11 will not contact the bottom of the overlapped needle groove 101 or the bottom of the first needle groove 110, and will not affect the movement of the middle needle pin 11; the second needle groove 120 has a depth D2 less than D1, so by controlling the extension distance of the middle needle pin 11, the movement of the middle needle pin 11 in the first needle groove 110 or the second needle groove 120 can be controlled;

[0049] The overlapping needle groove 101 may also be composed of a straight line portion from the bottom end of the second needle curve 121 to the top end of the overlapping needle groove 101. In this case, the first needle groove 110 includes a straight line portion connected to the overlapping needle groove 101; in this case, the second needle groove 120 is connected to the bottom of the overlapping needle groove 101.

[0050] like Figure 8 , is a schematic diagram of the structure of the jacquard piece 40 of the utility model that is not selected by the needle selector, which means that the needle selector is not working. At this time, the distance of the middle needle pin 11 extending is L1, which is also the distance of the middle needle pin 11 extending from the edge of the middle needle 10 body; in this embodiment, L1 = 3.5 mm, see Figure 7 In this embodiment, the depth of the first needle groove is D1=4mm, the depth of the overlapping needle groove 101 is also D1=4mm, and the depth of the second needle groove is D2=2mm; therefore, in this embodiment, the movement of the middle needle pin 11 is from the overlapping needle groove 101 to the first needle groove 110, and the middle needle pin 11 is limited by the first abutting surface 112 and cannot enter the second needle groove 120; see Fig. 9 In the figure, path S1 is the movement path of the middle needle pin 11, which is composed of a plurality of rectangular spaces arranged at intervals; Fig. 9The upper part also includes the path of the cutter 30 of the cutter pin 31 and the path of the hook needle 20 of the hook needle pin 21 from top to bottom; it can be understood that in this example, the upper part of the triangle component 100 is also provided with a cutter needle groove 53 cooperating with the cutter pin 31 and a hook needle groove 52 cooperating with the hook needle pin 21; in another embodiment, the cutter pin 31, the hook needle pin 21, and the middle needle pin 11 work with different triangle components 100 respectively, which can be understood as setting three independent triangle components 100 to cooperate with the cutter pin 31, the hook needle pin 21, and the middle needle pin 11 respectively;

[0051] like Fig.10 , is a schematic diagram of the structure of the jacquard piece 40 of the utility model being selected by the needle selector for the first displacement. At this time, it indicates that the needle selector is working, and the needle selector makes the jacquard piece 40 sink into the needle groove of the needle cylinder 60 (moving to the left in the figure), and at the same time drives the middle needle 10 stuck in the groove 41 of the jacquard piece 40 to make the first displacement in the direction of the needle groove 61 of the needle cylinder 60, so that the middle needle pin 11 arranged on the side of the middle needle 10 is partially separated from the overlapping needle groove 101. At this time, the distance of the middle needle pin 11 extending is L2. In this embodiment, L2=1.5mm, see Figure 7 In this embodiment, the depth of the first needle groove is D1=4mm, the depth of the overlapping needle groove 101 is also D1=4mm, and the depth of the second needle groove is D2=2mm; therefore, in this embodiment, the movement of the middle needle pin 11 is from the overlapping needle groove 101 to the second needle groove 120, and the middle needle pin 11 is limited by the second abutment surface 122; see Fig.11 In the figure, path S2 is the movement path of the middle needle pin 11, which is composed of a plurality of rectangular intervals; position A1 in the figure is the approximate position where the needle selector (not shown in the figure) acts on the jacquard piece 40, and the middle needle pin 11 partially leaves the overlapping needle groove 101, thereby entering the second needle groove 120 for movement;

[0052] like Fig.12 , is a schematic diagram of the structure of the jacquard piece 40 of the utility model being selected by the needle selector for the second displacement. At this time, it indicates that the needle selector is further working, and the needle selector makes the jacquard piece 40 sink into the needle groove of the needle cylinder 60 (moving to the left in the figure), and at the same time drives the middle needle 10 stuck in the groove 41 of the jacquard piece 40 to move to the needle groove 61 of the needle cylinder 60 for the second time, so that the middle needle pin 11 arranged on the side of the middle needle 10 is completely separated from the overlapping needle groove 101. At this time, the distance extended by the middle needle pin 11 is 0, and the middle needle pin 11 on the side of the middle needle 10 is separated from the overlapping needle groove 101, and only moves in translation with the needle cylinder 60, see Fig.13, path S3 is the movement path of the middle needle pin 11, which is composed of a plurality of rectangular intervals; the position A2 in the figure is the approximate position where the needle selector (not shown in the figure) acts on the jacquard piece 40, at which time the middle needle pin 11 is completely separated from the overlapping needle groove 101, so the needle groove cannot limit the middle needle pin 11, and the movement trajectory of the middle needle pin 11 becomes a horizontal movement trajectory on the left side of the position A2;

[0053] like Figure 14-15 As shown, it is another embodiment of the utility model, the needle groove includes a first needle groove 110, a second needle groove 120, and a third needle groove 130 of three different depths; the depth of the first needle groove 110 is greater than the depth of the second needle groove 120; the depth of the second needle groove 120 is greater than the depth of the third needle groove 130; the first needle curve 111 of the first needle groove 110 is located below the second needle curve 121 of the second needle groove 120; the second needle curve 121 of the second needle groove 120 is located at the third of the third needle groove 130 Below the needle curve 131; the upper end surface of the first needle groove 110 is the first abutment surface 112 cooperating with the middle needle pin 11; the upper end surface of the second needle groove 120 is the second abutment surface 122 cooperating with the middle needle pin 11; the upper end surface of the third needle groove 130 is the third abutment surface 132 cooperating with the middle needle pin 11; its working principle is basically the same as the above, and the distance of the middle needle pin 11 from the overlapping needle groove 101 is controlled by the needle selector to control which needle groove the middle needle pin 11 enters, thereby realizing weaving of different line lengths.

[0054] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. Step-type curve needle selection cam structure, characterized by: The invention comprises a cam assembly (100); the cam assembly (100) is provided with a needle groove matched with a middle needle pin (11) on a middle needle (10); the needle groove is composed of a coincident needle groove (101) and at least two needle grooves of different depths; the coincident needle groove (101) is connected to each needle groove.

2. The stepped curved needle selection cam structure according to claim 1, characterized in that: The needle groove comprises a first needle groove (110) and a second needle groove (120) of two different depths; the depth of the first needle groove (110) is greater than the depth of the second needle groove (120); and the first needle curve (111) of the first needle groove (110) is located below the second needle curve (121) of the second needle groove (120).

3. The stepped curve needle selection cam structure according to claim 1, characterized in that: The needle moving groove comprises a first needle moving groove (110), a second needle moving groove (120), and a third needle moving groove (130) of three different depths; the depth of the first needle moving groove (110) is greater than the depth of the second needle moving groove (120); the depth of the second needle moving groove (120) is greater than the depth of the third needle moving groove (130); the first needle moving curve (111) of the first needle moving groove (110) is located below the second needle moving curve (121) of the second needle moving groove (120); the second needle moving curve (121) of the second needle moving groove (120) is located below the third needle moving curve (131) of the third needle moving groove (130).

4. The stepped curved needle selection cam structure according to any one of claims 1 to 3, characterized in that: The overlapping needle groove (101) is a straight groove arranged obliquely.

5. The stepped curved needle selection cam structure according to any one of claims 1 to 3, characterized in that: The depth of the overlapping needle groove (101) is the same as the depth of the first needle groove (110).

6. The stepped curved needle selection cam structure according to claim 5, characterized in that: The depth of the overlapping needle groove (101) and the depth of the first needle groove (110) are the deepest depths of the needle groove.

7. The stepped curve needle selection cam structure according to claim 1, characterized in that: The distance that the middle needle pin (11) extends out of the edge of the middle needle (10) body is less than or equal to the depth of the overlapping needle groove (101).

8. The stepped curve needle selection cam structure according to claim 2, characterized in that: The upper end surface of the first needle groove (110) is a first abutting surface (112) that cooperates with the middle needle pin (11); the upper end surface of the second needle groove (120) is a second abutting surface (122) that cooperates with the middle needle pin (11).

9. The stepped curved needle selection cam structure according to claim 3, characterized in that: The upper end surface of the first needle groove (110) is a first abutting surface (112) that cooperates with the middle needle pin (11); the upper end surface of the second needle groove (120) is a second abutting surface (122) that cooperates with the middle needle pin (11); and the upper end surface of the third needle groove (130) is a third abutting surface (132) that cooperates with the middle needle pin (11).

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