Bottom plate and knitting needle assembly for flat knitting machine

Abstract

The utility model relates to the field of flat knitting machines, and discloses a bottom plate and knitting needle assembly for a flat knitting machine, which comprises a bottom plate (1), a knitting area assembly (A), a station needle selection area assembly (B) and a knitting needle assembly (C), and the knitting needle assembly (C) comprises a knitting needle (C1), a long needle (C2) and a station needle selection (C3) which are matched with one another. The long needle (C2) is in contact fit with the knitting area assembly (A) and drives the knitting needle (C1) to move, and the station needle selection (C3) is in contact fit with the station needle selection area assembly (B) and drives the knitting needle (C1) to move. According to the triangular bottom plate of the flat knitting machine, the structural design and the knitting function are optimized, the overall size is reduced, meanwhile, the function integration degree and the operation efficiency of the flat knitting machine are greatly improved, the production level of the flat knitting machine and the quality of knitted products can be effectively improved, and an innovative solution is provided for technical development of the flat knitting machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flat knitting machine, especially relates to a bottom plate and needle assembly for flat knitting machine. BACKGROUND

[0002] In the traditional flat knitting machine, the structure of the cam bottom plate often has some limitations. The longitudinal width and the needle plate width are relatively large, which not only occupies a large space, but also may cause the overall structure of the flat knitting machine to be bloated, which is not conducive to miniaturization and compact design. The commonly used needle plate generally uses spring stitches and needle selection pieces to complete the functions of station switching and needle selection. The cam bottom plate using the above-mentioned mode is not optimized for the realization of multiple functions, and there are certain limitations in the stability and function realization of the needle selection, which limits the diversity of the knitting pattern and the improvement of the production efficiency. SUMMARY

[0003] The utility model provides a bottom plate and needle assembly for flat knitting machine in view of the shortcomings in the prior art.

[0004] In order to solve the above technical problems, the utility model solves the problem through the following technical scheme:

[0005] A bottom plate and needle assembly for flat knitting machine, comprising a bottom plate, the bottom plate is provided with a knitting area assembly and a station needle selection area assembly arranged in sequence from top to bottom, and further comprising a needle assembly, the needle assembly comprises a needle, a long needle and a station needle selection, the long needle is in contact with the knitting area assembly and drives the needle to move, the station needle selection is in contact with the station needle selection area assembly and drives the needle to move, and the above-mentioned cooperation completes the functions of station switching, needle selection and pre-selection, and different knitting methods are realized by the cooperation of the long needle and the needle.

[0006] As a preferred embodiment, the knitting area assembly comprises a chevron cam, a needle path switching cam and a knitting cam arranged in sequence from top to bottom, and further comprises two degree cam located on the left and right sides, the chevron cam, the needle path switching cam, the knitting cam and the degree cam form a knitting unit, two knitting units are installed on the bottom plate, and a middle guard and a middle reserved cam arranged in sequence from top to bottom and fixed on the bottom plate are arranged between the two knitting units, a left side guard and a left reserved cam arranged in sequence from top to bottom and fixed on the bottom plate are arranged on the left side of the left knitting unit, and a right side guard and a right reserved cam arranged in sequence from top to bottom and fixed on the bottom plate are arranged on the right side of the right knitting unit.

[0007] As preferred, a needle selector is installed on the bottom plate, and the needle selector is located on the left and right sides below the knitting unit position selector assembly; a needle selector guard is installed above the needle selector; the position selector is provided with a needle selector heel, and the end surface of the needle selector heel is provided with a hook groove, which is matched with the protrusion on the needle selector guard; when the position selector moves to the needle selector area along the specific cam profile, the needle selector heel is hung on the needle selector guard through the hook groove, so that the position selector that does not need to participate in knitting is limited in the appropriate position.

[0008] As preferred, the needle selector guard is fixed on the left, right and middle reserve cams respectively and is integrally formed with the same.

[0009] As preferred, the tail of the needle is provided with a rotating groove, the head of the long needle is matched with the rotating groove and can rotate up and down with the front end of the rotating groove as the center, the middle part of the long needle is provided with a long needle heel that protrudes upward and is matched with the knitting area assembly, and the tail end of the long needle is in contact with the groove bottom of the frame needle groove; the long needle is a flexible needle; the head of the position selector is arranged on the upper surface of the tail of the long needle, the needle selector heel is located on the head of the position selector and protrudes upward, the position selector is positioned by the limiting wire, so as to prevent it from loosening, and the needle selector heel that is matched with the needle selector is arranged on the middle part of the position selector. When the needle selector heel is pressed down, the long needle is also pressed into the needle groove due to the elastic effect, and the long needle heel cannot be in contact with the knitting area assembly.

[0010] As preferred, the position selector area assembly includes a left needle connecting plate, a sinker connecting plate and a right needle connecting plate that are located in the middle of the bottom plate and below the knitting unit; a non-knitting connecting plate is further installed below the left needle connecting plate, the sinker connecting plate and the right needle connecting plate; the left needle connecting plate, the sinker connecting plate, the right needle connecting plate and the non-knitting connecting plate are all provided with an arc-shaped positioning groove, and the upper end of the needle selector heel is provided with an arc-shaped protrusion that is matched with the arc-shaped positioning groove.

[0011] As preferred, the position selector area assembly further includes a left needle selector cam, a middle needle selector cam and a right needle selector cam that are sequentially fixed on the left and right sides of the lower part of the bottom plate; a lifting cam is installed at the connection of the left needle selector cam, the middle needle selector cam and the right needle selector cam; a left needle pushing cam and a right needle pushing cam are further installed on the left and right sides below each knitting unit; the tail of the position selector is further provided with a rear heel, and the rear heel is in contact with the left needle selector cam, the middle needle selector cam, the right needle selector cam, the left needle pushing cam and the right needle pushing cam.

[0012] This utility model, by adopting the above technical solutions, has significant technical effects: The triangular base plate of the flat knitting machine reduces the longitudinal width, optimizes the triangular position structure, improves needle selection stability, realizes multiple knitting functions, and improves knitting efficiency and quality; the hook groove of the needle selection at the workstation contacts the needle selection guard of the retaining triangle, increasing the stability of needle selection, reducing needle selection errors, and improving knitting quality; positioning grooves are opened on the hanging eyelet pressure plate, left and right needle receiving pressure plate, and non-woven pressure plate, making the workstation switching and needle selection function more accurate and efficient. It can realize non-woven function, hanging eyelet function, knitting function, needle flipping function, left needle receiving function, right needle receiving function, double flipping function, and same row hanging eyelet tape knitting function in the same knitting instruction, enriching the diversity of knitting patterns and improving production efficiency. By optimizing the structural design and knitting functions, while reducing the overall size, the functional integration and operational efficiency of the knitting machine are greatly improved. Its stable needle selection mechanism, precise positioning design, and multi-functional integrated knitting function can effectively improve the production level of flat knitting machines and the quality of knitted products, providing an innovative solution for the technological development of flat knitting machines. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the base plate of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the knitting needle assembly of this utility model.

[0015] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0016] Figure 4 This is a diagram showing the assembly of the knitting needle assembly and the needle selection guard.

[0017] Figure 5 This is a diagram showing the assembly of the knitting needle assembly and the hanging plate.

[0018] Figure 6 This is a schematic diagram of the structure of nonwoven sheet.

[0019] Figure 7 This is a structural diagram of the clamping plate, the left-hand clamping plate, and the right-hand clamping plate.

[0020] Figure 8 This is the state diagram of the flat knitting machine when performing the non-woven function.

[0021] Figure 9 This is a state diagram of the flat knitting machine when performing the lifting function.

[0022] Figure 10 This is a state diagram of the flat knitting machine when performing the knitting function.

[0023] Figure 11is the state diagram of the flat knitting machine when the needle reversing function is performed.

[0024] Figure 12 is the state diagram of the flat knitting machine when the right needle transferring function is performed.

[0025] Figure 13 is the state diagram of the flat knitting machine when the left needle transferring function is performed.

[0026] Figure 14 is the state diagram of the flat knitting machine when the opposite needle transferring function is performed.

[0027] Figure 15 is the state diagram of the flat knitting machine when the tuck stitch knitting function is performed.

[0028] The names of the parts referred to by the respective reference numerals in the drawings are as follows: A - knitting zone assembly, B - position selector zone, C - needle assembly, A1 - cam, A2 - needle path switching cam, A3 - knitting cam, A4 - tuck stitch cam, A5 - middle guard, A6 - left side guard, A7 - right side guard, A8 - left reserve cam, A9 - right reserve cam, A10 - middle reserve cam, B1 - tuck stitch presser, B2 - left needle transferring presser, B3 - right needle transferring presser, B4 - non-knitting presser, B5 - lifting cam, B6 - left position selector cam, B7 - right position selector cam, B8 - middle position selector cam, B9 - left needle selector cam, B10 - right needle selector cam, B11 - selector, B12 - selector guard, C1 - needle, C11 - rotating groove, C2 - long needle, C21 - long needle butt, C3 - position selector, C31 - selector butt, C311 - hook groove, C312 - protrusion, C32 - rear butt. DETAILED DESCRIPTION

[0029] The utility model will be described in further detail below in combination with the drawings and embodiments.

[0030] Embodiment 1

[0031] A bottom plate and needle assembly for flat knitting machine, as shown in the figure, comprising a bottom plate 1, the bottom plate 1 is installed with knitting zone assembly A and position selector zone assembly B distributed in sequence up and down, further comprising needle assembly C, the needle assembly C comprises needle C1, long needle C2 and position selector C3 matched with each other, the long needle C2 is contacted and matched with knitting zone assembly A and drives needle C1 to move, the position selector C3 is contacted and matched with position selector zone assembly B and drives needle C1 to move, through the above cooperation, the position switching and needle selection, pre-selection function are completed and the long needle C2 and needle C1 are matched to complete different knitting methods.

[0032] The knitting zone assembly A comprises the left and right arranged triangular cams A1, needle path switching cams A2 and knitting cams A3, and two gauge cams A4 arranged on the left and right sides. The triangular cam A1, the needle path switching cam A2, the knitting cam A3 and the gauge cam A4 form a knitting unit. Two knitting units are arranged on the base plate 1. The intermediate guard bars A5 and the intermediate retention cams A10 are arranged on the base plate 1 in sequence from top to bottom and are fixed on the base plate 1. The left side of the left knitting unit is provided with the left side guard bars A6 and the left retention cam A8 arranged in sequence from top to bottom and fixed on the base plate 1. The right side of the right knitting unit is provided with the right side guard bars A7 and the right retention cam A9 arranged in sequence from top to bottom and fixed on the base plate 1.

[0033] Embodiment 2

[0034] The embodiment is the same as embodiment 1, except that a needle selector B11 is arranged on the base plate 1. The needle selector B11 is arranged on the left and right sides below the needle selection area assembly of each knitting unit station. The base plate 1 is further provided with a needle selection guard B12 arranged above the needle selector B11. The station needle C3 is provided with a needle selection heel C31. The end surface of the needle selection heel C31 is provided with a hook groove C311. The hook groove C311 is matched with the protrusion on the needle selection guard B12. When the station needle C3 moves to the needle selection area along the specific cam contour, the needle selection heel C31 is hung on the needle selection guard B12 through the hook groove C311, so that the station needle C3 which does not need to participate in knitting is limited in the appropriate position.

[0035] The needle selection guard B12 is fixed on the left retention cam A8, the right retention cam A9 and the intermediate retention cam A10 respectively and is integrally formed with the same.

[0036] Embodiment 3

[0037] The embodiment is the same as embodiment 1, except that the tail of the needle C1 is provided with a rotating groove C11. The head of the long needle C2 is matched with the rotating groove C11 and can rotate up and down with the front end of the rotating groove C11 as the center. The middle part of the long needle C2 is provided with a long needle heel C21 which protrudes upward and is matched with the knitting zone assembly A. The tail end of the long needle C2 is in contact with the groove bottom of the rack needle groove. The long needle C2 is a flexible needle. The head of the station needle C3 is arranged on the upper surface of the tail of the long needle C2. The needle selection heel C31 is located on the head of the station needle C3 and protrudes upward. The station needle C3 is positioned by the limiting steel wire, so as to prevent it from being loosened. The station needle C3 is provided with a needle selection group which is matched with the needle selector B11. When the needle selection heel C31 is pressed down, the long needle C2 is also pressed into the needle groove due to the elastic effect. The long needle heel C21 cannot be in contact with the knitting zone assembly A.

[0038] Embodiment 4

[0039] Similar to Embodiment 1, the difference is that the needle selection area component B includes a left needle receiving plate B2, a hanging eyelet plate B1, and a right needle receiving plate B3 located in the middle of the base plate 1 and below the knitting unit. A non-woven plate B4 is also installed below the left needle receiving plate B2, the hanging eyelet plate B1, and the right needle receiving plate B3. Each of the left needle receiving plate B2, the hanging eyelet plate B1, the right needle receiving plate B3, and the non-woven plate B4 is provided with an arc-shaped positioning groove. The upper end of the needle selection heel C31 is provided with an arc-shaped protrusion C312 that cooperates with the arc-shaped positioning groove.

[0040] The workstation needle selection area component B also includes a left needle selection triangle B6, a middle needle selection triangle B8, and a right needle selection triangle B7, which are fixedly mounted on the lower part of the base plate 1 in sequence from left to right; a needle lifting triangle B5 is installed at the connection of the left needle selection triangle B6, the middle needle selection triangle B8, and the right needle selection triangle B7; it also includes a left push needle triangle B9 and a right push needle triangle B10 located on the left and right sides below each knitting unit; the tail of the workstation needle selection C3 is also provided with a rear needle heel C32, which contacts and engages with the left needle selection triangle B6, the middle needle selection triangle B8, the right needle selection triangle B7, the left push needle triangle B9, and the right push needle triangle B10.

[0041] A weaving method for a horizontal knitting machine:

[0042] 1) Performing the non-woven function: The triangular base plate 1 moves to the left, the lower edge of the needle selector B11 touches the station needle selector C3, the needle selector boss causes the station needle selector C3 to sink into the needle groove, the station needle selector C3 is in an unselected state, the needle selector heel C31 does not contact the triangle of the station needle selector area component B, at this time the needle selector heel C31 is in position B and is pressed into the needle groove by the non-woven pressure plate B4, touching the long needle C2 needle bar so that the long needle heel C21 does not contact the triangle outline of the knitting area component A, the knitting needle C1 is in the initial position and does not enter the knitting needle path, the triangular base plate performs the non-woven function;

[0043] 2) Perform the hanging eye function: The needle path switching triangle A2, the left needle receiving plate B2, the right needle receiving plate B3, the left push needle triangle B9, and the right push needle triangle B10 sink into the base plate 1. The triangle base plate moves to the left, the needle selector B11 cutter head is raised and does not contact the needle selection boss. The selected station needle selector C3 contacts the left retaining triangle A8 and the left needle selection triangle B6 and pushes the station needle selector C3 to move up to position H. The long needle heel C21 moves up along the knitting triangle outline to the hanging eye height. The needle selection needle heel C31 in position H continues to move to the right and is pressed into the needle groove by the hanging eye plate B1. The corresponding long needle heel C21 also sinks into the needle groove. The long needle heel C21 does not contact the triangle outline. The knitting needle C1 stays at the hanging eye height. The triangle base plate performs the hanging eye function.

[0044] 3) Perform the knitting function: The needle switching triangle A2, the left needle pressing plate B2, and the right needle pressing plate B3 sink into the base plate 1. The needle selector B11 blade is raised and does not contact the station needle selector C3. The selected station needle selector C3 contacts the left retaining triangle A8 and the left needle selecting triangle B6 and pushes the station needle selector C3 to move up to position H. After another needle selection, the selected station needle selector C3 moves further up along the outline of the left push needle triangle B9 to position A. The station needle selector C3 continues to move to the right without contacting the left needle pressing plate B2, the hanging eyelet pressing plate B1, the right needle pressing plate B3, and the non-knitting pressing plate B4. The long needle heel C21 always protrudes from the needle groove and moves along the shape of the knitting triangle A3 to push the knitting needle to the knitting height. The triangle base plate performs the knitting function.

[0045] 4) Perform the needle flipping function: The left needle pressing plate B2 and the right needle pressing plate B3 sink into the base plate 1. The needle selector B11 blade is raised and does not contact the needle selection boss. The selected station needle selector C3 contacts the left retaining triangle A8 and the left needle selection triangle B6 and pushes the station needle selector C3 to move up to position H. After another needle selection, the selected station needle selector C3 moves further up along the outline of the left push needle triangle B9 to position A. The station needle selector C3 continues to move to the right without contacting the left needle pressing plate B2, the hanging eyelet pressing plate B1, the right needle pressing plate B3 and the non-woven pressing plate B4. The long needle heel C21 always protrudes from the needle groove and moves along the shape of the knitting triangle A3 through the needle path switching triangle A2 to enter the needle flipping needle path. The long needle C2 pushes the knitting needle C1 to complete the needle flipping function.

[0046] 5) Perform the right needle connection function: The hanging eye pressure plate B1, the right needle connection pressure plate B3, the left push needle triangle B9 and the right push needle triangle B10 sink into the base plate 1. The triangle base plate moves to the left, and the needle selector B11 cutter head is raised and does not contact the needle selection boss. The selected station needle selector C3 contacts the left retaining triangle A8 and the left needle selection triangle B6 and pushes the station needle selector C3 to move up to position H. The station needle selector C3 continues to move to the right. The left needle connection pressure plate B3 presses the needle heel C31 into the needle groove. The station needle selector C3 abuts against the needle bar of the long needle C2 and presses the long needle heel into the needle groove as well. The long needle heel C21 does not contact the outer contour of the knitting triangle A3. The long needle C2 continues to move to the right and reaches the position of the hanging eye pressure plate B1 sinking into the base plate 1. The long needle heel C21 protrudes from the needle groove and contacts the needle connection contour of the knitting triangle A3, pushing the knitting needle C1 into the needle connection needle path, so that the knitting needle C1 completes the right needle connection function.

[0047] 6) Perform the left needle connection function: The hanging eye pressure plate B1, the left needle connection pressure plate B2, the left push needle triangle B9, and the right push needle triangle B10 sink into the base plate 1. The triangle base plate moves to the right, and the needle selector B11 blade tip is raised and does not contact the needle selection boss. The selected station needle selector C3 contacts the right retaining triangle A9 and the right needle selection triangle B3 and pushes the station needle selector C3 to move up to position H. The station needle selector C3 continues to move to the left. The right needle connection pressure plate B2 presses the needle heel C31 into the needle groove. The station needle selector C3 abuts against the long needle C2 needle bar and presses the long needle heel into the needle groove as well. The long needle heel C21 does not contact the outer contour of the knitting triangle A3. The long needle C2 continues to move to the left and reaches the position of the hanging eye pressure plate B1 sinking into the base plate 1. The long needle heel C21 protrudes from the needle groove and contacts the needle connection contour of the knitting triangle A3, pushing the knitting needle C1 into the needle connection needle path, so that the knitting needle C1 completes the left needle connection function.

[0048] 7) Perform the flip function: The hanging eye pressure plate B1 and the right needle receiving pressure plate B3 sink into the base plate 1. The needle selector B11 cutter head is raised and does not contact the needle selection boss. The selected station needle selector C3 contacts the left retaining triangle A8 and the left needle selection triangle B2 and pushes the station needle selector C3 to move up to position H. After another needle selection, the selected station needle selector C3 moves further up along the outline of the left push needle triangle B9 to position A. The long needle C2 pushes the knitting needle C1 into the flip needle path. At this time, the second unselected station needle selector C3 stays at the first upward movement height, that is, at position H. The long needle C2 pushes the corresponding knitting needle C1 into the receiving needle path. The above function is the flip function performed in the same knitting instruction of the same system.

[0049] 8) Performing the same row of hanging needle tape weaving function: Needle path switching triangle A2, left needle pressing plate B2, and right needle pressing plate B3 sink into the base plate 1. The needle selector B11 cutter head is raised and does not contact the station needle selector C3. The selected station needle selector C3 contacts the left retaining triangle A8 and the left needle selection triangle B2 and pushes the station needle selector C3 up to position H. After another needle selection, the selected station needle selector C3 moves further up along the outline of the left push needle triangle B9 to position A. The long needle C2 pushes the knitting needle C1 into the weaving needle path. At this time, the second unselected station needle selector C3 stays at the original height, i.e., position H. The long needle C2 pushes the corresponding knitting needle C1 into the hanging needle path. The above function is the same row of hanging needle tape weaving function performed in the same row of weaving instructions in the same system.

[0050] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A base plate and needle assembly for a flat knitting machine, characterized in that: It includes a base plate (1), on which a knitting area assembly (A) and a station needle selection area assembly (B) are installed, and also includes a knitting needle assembly (C). The knitting needle assembly (C) includes knitting needles (C1), long needles (C2) and station needle selection (C3) that cooperate with each other. The long needles (C2) contact and cooperate with the knitting area assembly (A) and drive the knitting needles (C1) to move. The station needle selection (C3) contacts and cooperates with the station needle selection area assembly (B) and drives the knitting needles (C1) to move.

2. The base plate and needle assembly for a flat knitting machine according to claim 1, characterized in that: The knitting area component (A) includes a herringbone triangle (A1), a needle path switching triangle (A2), and a knitting triangle (A3) arranged vertically, and also includes two gauge triangles (A4) located on the left and right sides. The herringbone triangle (A1), needle path switching triangle (A2), knitting triangle (A3), and gauge triangle (A4) constitute a knitting unit. The base plate (1) has at least one knitting unit. Between the knitting units, there are also vertically arranged middle guard (A5) and middle retention triangle (A10). The left side of the left knitting unit has vertically arranged left guard (A6) and left retention triangle (A8). The right side of the right knitting unit has vertically arranged right guard (A7) and right retention triangle (A9).

3. A base plate and needle assembly for a flat knitting machine according to claim 1 or 2, characterized in that: It also includes a needle selector (B11) installed on the base plate (1), and a needle selection guard (B12) located above the needle selector (B11) is also installed on the base plate (1); the station needle selector (C3) is provided with a needle selection heel (C31), and the end face of the needle selection heel (C31) is provided with a hook groove (C311), which engages with the protrusion on the needle selection guard (B12).

4. The base plate and needle assembly for a flat knitting machine according to claim 3, characterized in that: The needle selection platform (B12) is fixedly mounted on the left retention triangle (A8), right retention triangle (A9) and center retention triangle (A10).

5. A base plate and needle assembly for a flat knitting machine according to claim 3, characterized in that: The tail of the needle (C1) is provided with a rotating groove (C11), the head of the long needle (C2) is engaged with the rotating groove (C11), the middle of the long needle (C2) is provided with a long needle heel (C21) that protrudes upward and engages with the knitting area assembly (A), the tail end of the long needle (C2) is in contact with the bottom of the needle groove of the frame, and the long needle (C2) is an elastic needle; the head of the station needle selector (C3) is mounted on the upper surface of the tail of the long needle (C2), the needle selector heel (C31) is located at the head of the station needle selector (C3) and protrudes upward, and the middle of the station needle selector (C3) is provided with a needle selector group that engages with the needle selector (B11).

6. A base plate and needle assembly for a flat knitting machine according to claim 1, characterized in that: The needle selection area assembly (B) includes a left needle pressing plate (B2), a hanging eyelet pressing plate (B1), and a right needle pressing plate (B3) located in the middle of the base plate (1). A non-woven pressing plate (B4) is also installed below the left needle pressing plate (B2), the hanging eyelet pressing plate (B1), and the right needle pressing plate (B3). The left needle pressing plate (B2), the hanging eyelet pressing plate (B1), the right needle pressing plate (B3), and the non-woven pressing plate (B4) are all provided with positioning grooves. The upper end of the needle selection heel (C31) is provided with a protrusion (C312) that cooperates with the positioning groove.

7. A base plate and needle assembly for a flat knitting machine according to claim 1, characterized in that: The station needle selection area assembly (B) also includes a left needle selection triangle (B6), a middle needle selection triangle (B8), and a right needle selection triangle (B7) located on the lower part of the base plate (1) and fixedly mounted on the left and right sides in sequence; a needle lifting triangle (B5) is installed at the connection of the left needle selection triangle (B6), the middle needle selection triangle (B8), and the right needle selection triangle (B7); it also includes a left push needle triangle (B9) and a right push needle triangle (B10); the tail of the station needle selection (C3) is also provided with a rear needle heel (C32), which contacts and engages with the left needle selection triangle (B6), the middle needle selection triangle (B8), the right needle selection triangle (B7), the left push needle triangle (B9), and the right push needle triangle (B10).

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