Knitting machine with quick positioning and needle selecting mechanism

Abstract

The invention belongs to the technical field of knitting machines, and particularly relates to a knitting machine with a quick positioning and needle selecting mechanism, the quick positioning and needle selecting mechanism comprises a mounting bottom shell, an electromagnetic needle selecting unit, a sub-control circuit board, an external circuit interface and a needle selecting tool bit; a plurality of electromagnetic needle selection units are arranged in the mounting bottom shell; the sub-control circuit board is used for controlling the on-off and the current direction of one or more electromagnetic coils of the electromagnetic needle selection unit; the needle selection tool bits correspond to the electromagnetic needle selection units in a one-to-one mode, and the needle selection tool bits are used for needle selection of the knitting machine. The needle selection mechanism in the scheme can be matched with a flat knitting machine of the knitting machine to perform quick needle selection, so that when the needle selection mechanism is applied to a jacquard process, the production efficiency is effectively improved, quick integral forming of jacquard on knitted fabric is facilitated, automatic production is conveniently realized, and the production efficiency is improved by accurately controlling the action of the needle selection mechanism. The stability and precision of the knitting machine during high-speed operation are ensured, the needle selection process is quicker and more accurate, and the knitting efficiency and the knitted fabric quality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of knitting machines, and in particular relates to a knitting machine with a fast positioning needle selection mechanism. Background Art

[0002] A knitting machine is a device that can realize automatic jacquard weaving. Each knitting machine is equipped with a number of knitting needles. During the jacquard weaving process, it is often necessary to select the corresponding knitting needles according to the shape of the jacquard pattern. In the prior art, a needle selection mechanism is often used to select the knitting needles. The needle selection mechanism is generally used in conjunction with a knitting flat machine of a knitting machine to realize fast needle selection. When applied to large jacquard technology, it can effectively improve production efficiency and realize the integrated molding of fabric and jacquard. At the same time, the electromagnetically controlled needle selection mechanism is also conducive to the automated production of knitted fabrics.

[0003] Existing knitting needles often control the magnetic attraction or repulsion of the magnet through the charging and discharging of the electromagnetic coil or the direction of the current to control the swing of the needle selection cutter head. When the internal space of the needle selector is limited and the installation distance between multiple electromagnetic coils and magnets is relatively close, magnetic field interference is likely to occur and affect the control speed of the swing of the needle selection cutter head. In addition, due to the limited internal space of the needle selector, the existing needle selection cutter head is often 2-3 cm away from the swing center, and a larger angle change is required to enable the needle selection cutter head to reach the specified swing position, thereby reducing the frequency of the needle selection action of the needle selection cutter head.

[0004] With the increase in the production speed of knitting machines, higher requirements are placed on how the needle selector controls the rapid swing and positioning of the needle selection cutter head. Therefore, it is necessary to design corresponding needle selection mechanisms and knitting machines. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a knitting machine with a rapid positioning needle selection mechanism.

[0006] The technical solution adopted by the present invention is: A knitting machine with a fast positioning needle selection mechanism, the fast positioning needle selection mechanism comprising a mounting bottom shell, an electromagnetic needle selection unit, a sub-control circuit board, an external circuit interface and a needle selection cutter head; A plurality of electromagnetic needle selection units are arranged in the installation bottom shell, and the plurality of electromagnetic needle selection units are distributed in a rectangular array; the electromagnetic needle selection units include a strip base, a compression spring, a swing arm and a plurality of electromagnetic coils; the strip base is in a long strip shape, the rear end of the swing arm is fixedly connected to the rear end of the strip base, and the front end of the swing arm exceeds the strip base; the plurality of electromagnetic coils are arranged on the strip base along the length direction of the strip base, and are used to correspond to the movable iron block on the magnetically attracted swing arm; one end of the compression spring abuts against the front end of the swing arm, and the other end of the compression spring abuts against the front end of the strip base; The sub-control circuit board is used to control the on / off power and current direction of one or more electromagnetic coils of the electromagnetic needle selection unit; The needle selection cutter head corresponds one to one with the electromagnetic needle selection unit, the rear end of the needle selection cutter head is fixedly connected with the front end of the swing arm, the front end of the needle selection cutter head extends from the front end of the mounting bottom shell and is used for needle selection of the knitting machine.

[0007] As an alternative or supplement to the above scheme: the electromagnetic coil includes a magnetic insulation covering sleeve, a coil body and a fixed magnetic core; the coil body is a flat ring structure formed by winding copper wire; the fixed magnetic core is arranged at the center of the coil body and is located on the side of the coil body away from the swing arm; a magnetic suction groove is arranged on the side of the center of the coil body close to the swing arm, and the movable iron block is arranged in the magnetic suction groove and can move along the center line direction of the coil body; The swing arm and the bar base are both made of non-magnetic conductive materials to reduce magnetic field interference between adjacent electromagnetic coils and between adjacent electromagnetic needle selection units.

[0008] As an alternative or supplement to the above solution: the movable iron block is fixedly connected to the swing arm through a rubber pad, and a gap of 1-3 mm is set between the movable iron block and the groove wall of the magnetic suction groove to provide space for the deflection of the movable iron block relative to the electromagnetic coil.

[0009] As an alternative or supplement to the above scheme: the movable iron block is fixedly connected to the swing arm through a rotating connection assembly, the rotating connection assembly includes a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are rotatably connected to each other, the first connecting seat is fixedly connected to the movable iron block, and the second connecting seat is fixedly connected to the swing arm.

[0010] As an alternative or supplement to the above scheme: a vertical plate portion is provided on the side of the strip base away from the swing arm, and the electromagnetic coil is fixed on the vertical plate portion; the other end of the compression spring is against the vertical plate portion, and a spring positioning pin is provided on the vertical plate portion, and the tip of the spring positioning pin penetrates into the other end of the compression spring.

[0011] As an alternative or supplement to the above scheme: an L-shaped inner stopper and an L-shaped outer stopper are fixed on the strip base on the rear side of the compression spring, and a groove for limiting the front end of the swing arm is formed between the vertical parts of the L-shaped inner stopper and the L-shaped outer stopper.

[0012] As an alternative or supplement to the above scheme: a fixed transverse portion is arranged at the rear end of the swing arm, the fixed transverse portion is perpendicular to the main part of the swing arm, and two waist-shaped holes are arranged on the fixed transverse portion, one in front and one in the back, and the two waist-shaped holes are perpendicular to each other.

[0013] As an alternative or supplement to the above solution: a blade connecting portion is provided at the front end of the swing arm, and the rear side of the blade connecting portion is connected to the main body of the swing arm through a Z-shaped bending portion; The front end edge of the mounting bottom shell is bent to form an inverted L-shaped rail portion, and a rail groove is formed on the inner side of the inverted L-shaped rail portion, and the rail groove is perpendicular to the length direction of the swing arm; a sliding hook portion is provided at the lower side edge of the front end of the swing arm, and the sliding hook portion is hooked into the rail groove to limit the up and down movement of the front end of the swing arm.

[0014] As an alternative or supplement to the above scheme: a front end cover plate is fixed at the notch on the front side of the mounting bottom shell, and a plurality of cutter head mounting windows arranged in a straight line are arranged on the front end cover plate, and all needle selection cutter heads extend out from the cutter head mounting windows one by one and can swing left and right at the cutter head mounting windows.

[0015] As an alternative or supplement to the above scheme: a T-shaped stabilizing seat is arranged on the front side of the mounting bottom shell, a stabilizing seat mounting part is arranged on the front side of the mounting bottom shell, a first mounting hole is arranged on the T-shaped stabilizing seat, and a screw passing through the first mounting hole is fixedly connected to the stabilizing seat mounting part; a plurality of second mounting holes are arranged on the T-shaped stabilizing seat, and fixing holes are arranged at the front and rear ends of the strip base; when the two electromagnetic needle selection units overlap vertically, the lower electromagnetic needle selection unit is fixed to the strip base by the first screw, and the upper electromagnetic needle selection unit is fixed to the first screw by the second screw, and the screw passing through the second mounting hole fixes the T-shaped stabilizing seat to the second screw; the first screw and the second screw are both structures with external threads at the lower end and internal threads at the upper end.

[0016] The beneficial effects of the present invention are: 1. The swing fulcrum of the swing arm in this scheme is located at the rear end of the electromagnetic needle selection unit. The swing arm only needs to swing at a very small angle to move to the required positioning position, and can respond more quickly to the magnetic field changes of the electromagnetic coil, thereby increasing the swing speed of the needle selection cutter head and achieving rapid positioning; it can be suitable for current and future requirements for increasing production speed.

[0017] 2. The electromagnetic needle selection unit in this scheme has multiple electromagnetic coils in parallel. Each electromagnetic coil can be used individually or in combination to control the swing of the swing arm. It not only increases the response speed of the swing arm, but also does not affect the normal use of the electromagnetic needle selection unit when a single electromagnetic coil fails, thereby extending the service life of the rapid positioning needle selection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0019] Figure 1 This is the internal structure diagram of the quick positioning needle selection mechanism in this scheme from the top view; Figure 2 It is a top view of the structure of a single electromagnetic needle selection unit; Figure 3 It is a left-side perspective structural diagram of two overlapping electromagnetic needle selection units; Figure 4 This is a detailed structural diagram of the front end of the electromagnetic needle selection unit; Figure 5 This is a detailed structural diagram of the front end of another electromagnetic needle selection unit; Figure 6 This is a top view of the T-shaped stabilizing seat; Figure 7 yes Figure 3 Enlarged view of part A in the figure.

[0020] In the figure: 1-sub-control circuit board; 2-external circuit interface; 3-mounting bottom shell; 31-stable seat mounting part; 4-needle selection cutter head; 5-front end cover; 6-strip base; 61-vertical plate part; 62-inverted L-shaped rail part; 63-fixing hole; 7-swing arm; 71-fixed horizontal part; 72-sliding hook part; 73-blade connecting part; 8-electromagnetic coil; 81-magnetic isolation covering sleeve; 82-coil body; 83-fixed magnetic core; 84-magnetic suction groove; 9-compression spring; 91-spring positioning pin; 10-movable iron block; 101-first connecting seat; 102-second connecting seat; 11-L-shaped inner stopper; 12-L-shaped outer stopper; 13-T-shaped stable seat; 131-first mounting hole; 132-second mounting hole. DETAILED DESCRIPTION

[0021] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0022] like Figures 1 to 7 As shown, this embodiment designs a knitting machine with a quick positioning needle selection mechanism, which includes a mounting base 3, a front end cover 5, an electromagnetic needle selection unit, a sub-control circuit board 1, an external circuit interface 2 and a needle selection cutter head 4 and other components.

[0023] The installation base shell 3 is a square box structure, and has an installation cavity for components such as the electromagnetic needle selection unit and the sub-control circuit board 1. The top of the installation base shell 3 is open. After the corresponding components are installed in the installation base shell 3, a cover plate (not shown in the figure) can be used to cover the opening on the top of the installation base shell 3, and then screws can be used for installation.

[0024] The external circuit interface 2 is installed on the rear side of the mounting base shell 3, and the external circuit interface 2 is used for external electrical connection, so as to input external control signals into the mounting base shell 3, so as to control each electromagnetic needle selection unit.

[0025] The electromagnetic needle selection unit is installed in the installation bottom shell 3, and multiple electromagnetic needle selection units are distributed in a rectangular array, generally a 2×5 or 2×6 array.

[0026] The electromagnetic needle selection unit includes a strip base 6, a compression spring 9, a swing arm 7, a plurality of electromagnetic coils 8 and other components.

[0027] The strip base 6 is in the shape of a long strip. The rear end of the swing arm 7 is fixedly connected to the rear end of the strip base 6; specifically, the rear end of the swing arm 7 is provided with a fixed transverse portion 71, which is perpendicular to the main part of the swing arm 7. The main part of the swing arm 7 is in the shape of a long strip distributed front and back. The width direction of the swing arm 7 is parallel to the up and down direction of the installation bottom shell 3. Two waist-shaped holes are provided on the fixed transverse portion 71, one in front and one in the back. The two waist-shaped holes are perpendicular to each other, so as to improve the stability of the swing arm 7 after installation and facilitate fine adjustment of the initial position of the swing arm 7 after installation. The main part of the swing arm 7 is located on the left side of the strip base 6 and is arranged along the front and back direction of the strip base 6. The front end of the swing arm 7 is beyond the strip base 6. The front end of the swing arm 7 is provided with a blade connection portion 73, and a mounting hole is provided on the blade connection portion 73 to facilitate the detachable installation of the needle selection cutter head 4. The rear side of the blade connection portion 73 is connected to the main part of the swing arm 7 through a Z-shaped bending portion.

[0028] A plurality of electromagnetic coils 8 are fixed on the strip base 6. The plurality of electromagnetic coils 8 are arranged in a straight line along the length direction (i.e., the front-to-back direction) of the strip base 6. A vertical plate portion 61 is provided on one side of the strip base 6 away from the swing arm 7. Figure 2 The plurality of electromagnetic coils 8 can respectively magnetically attract the movable iron block 10 on the same swing arm 7, thereby controlling the swing of the swing arm 7. Each electromagnetic coil 8 can be used alone or in combination to control the swing of the swing arm 7, which not only increases the response speed of the swing arm 7, but also can extend the service life of the rapid positioning needle selection mechanism without affecting the normal use of the electromagnetic needle selection unit when a single electromagnetic coil 8 fails.

[0029] The compression spring 9 is arranged at the front end of the strip base 6 (i.e. Figure 2), one end of the compression spring 9 abuts against the front end of the swing arm 7; the other end of the compression spring 9 abuts against the front end of the strip base 6, specifically, the other end of the compression spring 9 abuts against the vertical plate portion 61, and the vertical plate portion 61 is provided with a spring positioning pin 91, and the tip of the spring positioning pin 91 penetrates into the other end of the compression spring 9. When the swing arm 7 is magnetically attracted by the electromagnetic coil 8 and moves to the right, the compression spring 9 will be compressed, and when the electromagnetic coil 8 is powered off, the compression spring 9 will release elastic potential energy, causing the swing arm 7 to swing to the left and return to its original position.

[0030] The sub-control circuit board 1 is used to control the on / off power and current direction of one or more electromagnetic coils 8 of the electromagnetic needle selection unit; when the sub-control circuit board 1 controls multiple electromagnetic coils 8 of the electromagnetic needle selection unit, it is often necessary to make the current change speed of the multiple electromagnetic coils 8 consistent.

[0031] The needle selection cutter head 4 corresponds one-to-one to the electromagnetic needle selection unit, and the rear end of the needle selection cutter head 4 is fixedly connected to the front end of the swing arm 7. The front end of the needle selection cutter head 4 extends from the front end of the mounting bottom shell 3 and is used for needle selection of the knitting machine. A front end cover plate 5 is fixed at the notch on the front side of the mounting bottom shell 3. The front end cover plate 5 is provided with a plurality of cutter head installation windows arranged in a straight line. All the needle selection cutter heads 4 extend from the cutter head installation windows one-to-one and can swing left and right at the cutter head installation windows. The front end cover plate 5 can block dust to a certain extent. The shape of the needle selection cutter head 4 can be determined according to the shape and position of the knitting needles on the knitting machine, and is generally in the shape of J, annular, conical, trapezoidal, etc., and no specific restrictions are made here.

[0032] The electromagnetic coil 8 includes a magnetic insulation sheath 81, a coil body 82 and a fixed magnetic core 83; the coil body 82 is a flat ring structure formed by winding copper wire; the fixed magnetic core 83 is arranged at the center of the coil body 82 and is located on the side of the coil body 82 away from the swing arm 7; a magnetic suction groove 84 is arranged on the side of the center of the coil body 82 close to the swing arm 7, and the movable iron block 10 is arranged in the magnetic suction groove 84 and can move along the center line direction of the coil body 82; the swing arm 7 and the bar base 6 are both made of non-magnetic conductive materials to reduce the magnetic field interference between adjacent electromagnetic coils 8 and adjacent electromagnetic needle selection units. The magnetic insulation sheath 81 is coated on the outer periphery of the coil body 82, and an insulating layer is arranged between the two to reduce the probability of circuit breaking.

[0033] The magnetic isolation covering sleeve 81 does not isolate the fixed magnetic core 83 and the area where the magnetic suction groove 84 is located, so that the structure in which the electromagnetic coil 8 cooperates with the movable iron block 10 can concentrate the magnetic field generated by the electromagnetic coil 8 more in the magnetic suction groove 84, thereby reducing the interference of the magnetic field diffusion to other electromagnetic coils 8. At the same time, the above structure does not use permanent magnets, thereby reducing the influence of the magnetic field of the permanent magnet on the current change frequency of the electromagnetic coil 8, increasing the speed of the magnetic field change of the electromagnetic coil 8, and then increasing the ferrying speed of the swing arm 7 to achieve rapid positioning.

[0034] The connection between the movable iron block 10 and the swing arm 7 can be in the following two ways: the first connection way is: the movable iron block 10 is fixedly connected to the swing arm 7 through a rubber pad, and a gap of 1-3mm is set between the movable iron block 10 and the groove wall of the magnetic suction groove 84, so that when the movable iron block 10 moves in an arc of a small distance with the rear end of the swing arm 7 as a fulcrum, the movable iron block 10 can have sufficient deflection space relative to the electromagnetic coil 8. The second connection way is: the movable iron block 10 is fixedly connected to the swing arm 7 through a rotating connection component, and the rotating connection component includes a first connection seat 101 and a second connection seat 102, the first connection seat 101 and the second connection seat 102 are rotatably connected to each other, the first connection seat 101 is fixedly connected to the movable iron block 10, and the second connection seat 102 is fixedly connected to the swing arm 7. In this way, the gap width between the movable iron block 10 and the groove wall of the magnetic suction groove 84 is lower, thereby reducing the leakage magnetic flux between the movable iron block 10 and the electromagnetic coil 8.

[0035] An L-shaped inner stopper 11 and an L-shaped outer stopper are fixed to the strip base 6 on the rear side of the compression spring 9, and a groove for limiting the front end of the swing arm 7 is formed between the vertical parts of the L-shaped inner stopper 11 and the L-shaped outer stopper. The transverse parts of the L-shaped inner stopper 11 and the L-shaped outer stopper are fixed to the strip base 6 by screws passing through the two. The vertical part of the L-shaped inner stopper 11 abuts against the right side wall of the swing arm 7, and the vertical part of the L-shaped outer stopper abuts against the left side wall of the swing arm 7. Each electromagnetic needle selection unit uses an L-shaped inner stopper 11 and an L-shaped outer stopper for independent limiting, so as to avoid collision and transmission of vibration to other electromagnetic needle selection units when the swing arm 7 swings to the extreme position. By replacing different L-shaped inner stoppers 11 and L-shaped outer stoppers, the limit position and limit range of the swing arm 7 can be adjusted.

[0036] The front edge of the mounting bottom shell 3 is bent to form an inverted L-shaped rail portion 62, and a rail groove is formed inside the inverted L-shaped rail portion 62, which is perpendicular to the length direction of the swing arm 7; a sliding hook portion 72 is provided at the lower side edge of the front end of the swing arm 7, and the sliding hook portion 72 is hooked into the rail groove to limit the up and down movement of the front end of the swing arm 7. The inverted L-shaped rail portion 62 can cooperate with the sliding hook portion 72 on the swing arm 7 to limit the swing direction, thereby reducing the vertical swing of the swing arm 7.

[0037] A T-shaped stable seat 13 is arranged on the front side of the installation bottom shell 3, and a stable seat mounting part 31 is arranged on the front side of the installation bottom shell 3. A first mounting hole 131 is arranged on the T-shaped stable seat 13, and a screw passing through the first mounting hole 131 is fixedly connected to the stable seat mounting part 31; a plurality of second mounting holes 132 are arranged on the T-shaped stable seat 13, and fixing holes 63 are arranged at the front and rear ends of the strip base 6; when two electromagnetic needle selection units overlap vertically, the lower electromagnetic needle selection unit is fixed to the strip base 6 by the first screw, and the upper electromagnetic needle selection unit is fixed to the first screw by the second screw, and the screw passing through the second mounting hole 132 fixes the T-shaped stable seat 13 to the second screw; the first screw and the second screw are both structures with external threads at the lower end and internal threads at the upper end. The T-shaped stable seat 13 can improve the stability of the electromagnetic needle selection unit after installation, and can directly transmit the vibration that is difficult to eliminate when the swing arm 7 swings to the installation bottom shell 3, and offset it to a certain extent with the help of the vibration of other electromagnetic needle selection units. Provide conditions for the needle selection mechanism to quickly swing to the required positioning position.

[0038] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A knitting machine with a rapid positioning needle selection mechanism, characterized in that: The rapid positioning needle selection mechanism comprises a mounting base (3), an electromagnetic needle selection unit, a sub-control circuit board (1), an external circuit interface (2) and a needle selection cutter head (4); A plurality of electromagnetic needle selection units are arranged in the installation bottom shell (3), and the plurality of electromagnetic needle selection units are distributed in a rectangular array; the electromagnetic needle selection units include a strip base (6), a compression spring (9), a swing arm (7) and a plurality of electromagnetic coils (8); the strip base (6) is in a long strip shape, the rear end of the swing arm (7) is fixedly connected to the rear end of the strip base (6), and the front end of the swing arm (7) protrudes from the strip base (6); the plurality of electromagnetic coils (8) are arranged on the strip base (6) along the length direction of the strip base (6), and are used to correspond to the movable iron block (10) on the magnetically attracted swing arm (7); one end of the compression spring (9) is against the front end of the swing arm (7), and the other end of the compression spring (9) is against the front end of the strip base (6); The sub-control circuit board (1) is used to control the on / off power supply and current direction of one or more electromagnetic coils (8) of the electromagnetic needle selection unit; The needle selection cutter head (4) corresponds one-to-one to the electromagnetic needle selection unit, the rear end of the needle selection cutter head (4) is fixedly connected to the front end of the swing arm (7), the front end of the needle selection cutter head (4) extends from the front end of the mounting bottom shell (3) and is used for needle selection of the knitting machine.

2. The knitting machine with a rapid positioning needle selection mechanism according to claim 1, characterized in that: The electromagnetic coil (8) comprises a magnetic insulation sheath (81), a coil body (82) and a fixed magnetic core (83); the coil body (82) is a flat ring structure formed by winding copper wire; the fixed magnetic core (83) is arranged at the center of the coil body (82) and is located on a side of the coil body (82) away from the swing arm (7); a magnetic suction groove (84) is arranged on a side of the center of the coil body (82) close to the swing arm (7), and the movable iron block (10) is arranged in the magnetic suction groove (84) and can move along the center line direction of the coil body (82); The swing arm (7) and the strip base (6) are both made of non-magnetic conductive material to reduce magnetic field interference between adjacent electromagnetic coils (8) and between adjacent electromagnetic needle selection units.

3. The knitting machine with a rapid positioning needle selection mechanism according to claim 2, characterized in that: The movable iron block (10) is fixedly connected to the swing arm (7) via a rubber pad, and a gap of 1-3 mm is provided between the movable iron block (10) and the groove wall of the magnetic attraction groove (84) to provide space for the movable iron block (10) to deflect relative to the electromagnetic coil (8).

4. The knitting machine with a rapid positioning needle selection mechanism according to claim 2, characterized in that: The movable iron block (10) is fixedly connected to the swing arm (7) via a rotating connection assembly, wherein the rotating connection assembly comprises a first connection seat (101) and a second connection seat (102), wherein the first connection seat (101) and the second connection seat (102) are rotatably connected to each other, the first connection seat (101) is fixedly connected to the movable iron block (10), and the second connection seat (102) is fixedly connected to the swing arm (7).

5. The knitting machine with a rapid positioning needle selection mechanism according to claim 2, characterized in that: A vertical plate portion (61) is provided on a side of the strip base (6) away from the swing arm (7), and the electromagnetic coil (8) is fixed on the vertical plate portion (61); the other end of the compression spring (9) abuts against the vertical plate portion (61), and a spring positioning pin (91) is provided on the vertical plate portion (61), and the tip of the spring positioning pin (91) penetrates into the other end of the compression spring (9).

6. The knitting machine with a rapid positioning needle selection mechanism according to claim 5, characterized in that: An L-shaped inner stopper (11) and an L-shaped outer stopper are fixed to the strip base (6) at the rear side of the compression spring (9), and a groove for limiting the front end of the swing arm (7) is formed between the vertical parts of the L-shaped inner stopper (11) and the L-shaped outer stopper.

7. The knitting machine with a rapid positioning needle selection mechanism according to any one of claims 1 to 6, characterized in that: The rear end of the swing arm (7) is provided with a fixed transverse portion (71), the fixed transverse portion (71) being perpendicular to the main body of the swing arm (7), and the fixed transverse portion (71) is provided with two waist-shaped holes, one in front and one in the back, the two waist-shaped holes being perpendicular to each other.

8. The knitting machine with a rapid positioning needle selection mechanism according to claim 7, characterized in that: A blade connection portion (73) is provided at the front end of the swing arm (7), and the rear side of the blade connection portion (73) is connected to the main body of the swing arm (7) via a Z-shaped bending portion; The front edge of the mounting bottom shell (3) is bent to form an inverted L-shaped rail portion (62), the inner side of the inverted L-shaped rail portion (62) is formed with a rail groove, and the rail groove is perpendicular to the length direction of the swing arm (7); a sliding hook portion (72) is provided at the lower side edge of the front end of the swing arm (7), and the sliding hook portion (72) is hooked into the rail groove to limit the upward and downward movement of the front end of the swing arm (7).

9. The knitting machine with a rapid positioning needle selection mechanism according to any one of claims 1 to 6, characterized in that: A front end cover plate (5) is fixed to the notch on the front side of the mounting bottom shell (3), and a plurality of cutter head mounting windows arranged in a straight line are provided on the front end cover plate (5). All the needle selection cutter heads (4) extend out from the cutter head mounting windows one by one and can swing left and right at the cutter head mounting windows.

10. The knitting machine with a rapid positioning needle selection mechanism according to claim 9, characterized in that: A T-shaped stabilizing seat (13) is arranged on the front side of the mounting base shell (3), a stabilizing seat mounting portion (31) is arranged on the front side of the mounting base shell (3), a first mounting hole (131) is arranged on the T-shaped stabilizing seat (13), and a screw passing through the first mounting hole (131) is fixedly connected to the stabilizing seat mounting portion (31); a plurality of second mounting holes (132) are arranged on the T-shaped stabilizing seat (13), and fixing holes (63) are arranged at the front and rear ends of the strip base (6); when the two electromagnetic needle selection units are vertically overlapped, the lower electromagnetic needle selection unit is fixed to the strip base (6) by the first screw, and the upper electromagnetic needle selection unit is fixed to the first screw by the second screw, and the screw passing through the second mounting hole (132) fixes the T-shaped stabilizing seat (13) to the second screw; the first screw and the second screw are both structures with external threads at the lower end and internal threads at the upper end.

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