Novel single-groove double-needle faller device

Abstract

The utility model discloses a novel single-groove double-needle faller device which comprises a faller, a knitting needle assembly, a sinker and a yarn blocking piece, a plurality of inserting pieces are inserted in the faller at intervals in the width direction, a partition piece is inserted between any two adjacent inserting pieces, and therefore a first needle groove and a second needle groove are formed between the partition piece and the inserting pieces. A first needle groove and a second needle groove are formed in the base, the knitting needle assemblies are arranged in the first needle groove and the second needle groove in a sliding mode respectively, the sinkers are inserted into the tops of the needle grooves, the yarn blocking piece is inserted between the sinkers, and connecting stitches are arranged between the knitting needle assemblies in the first needle groove and the second needle groove. According to the utility model, a single-groove double-needle knitting mode is adopted, so that the distance between two needles is greatly reduced, the knitting is tighter, and the knitting efficiency and quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of computer flat knitting machines, in particular to a novel single-groove double-needle needle plate device. Background Art

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

[0003] At present, the needle plates of computer flat knitting machines all adopt the single-slot and single-needle method, that is, a knitting needle group is placed in a needle slot. The knitting needle group usually includes a needle selection plate, a spring needle, a long needle and a latch needle. The front side of the latch needle has a circle expansion plate. Therefore, the opening width of the needle slot should be greater than the maximum thickness of the knitting needle group, and each adjacent knitting needle group is separated by an insert. The design of the insert also has certain size restrictions, which leads to a certain distance between two adjacent knitting needle groups. Therefore, the woven fabric structure cannot be more dense, the fit to the human body is limited, and the woven pattern is not rich enough. Therefore, it is necessary to improve and optimize the existing needle plate of the computer flat knitting machine. Utility Model Content

[0004] The technical problem to be solved by the embodiment of the utility model is to provide a new type of single-groove double-needle needle plate device, which adopts a single-groove double-needle knitting method, which not only greatly reduces the double-needle spacing to make the knitting tighter, but also effectively improves the knitting efficiency and quality.

[0005] To achieve the above-mentioned purpose, the utility model discloses a novel single-groove double-needle needle plate device, comprising a needle plate, a knitting needle assembly, a sinker, and a yarn stopper, wherein the needle plate is provided with a plurality of inserts spaced apart in the width direction, and a spacer is inserted between adjacent inserts, a first needle groove and a second needle groove are formed between the spacer and the inserts, the knitting needle assembly is a pair and is slidably disposed in the first needle groove and the second needle groove respectively, the sinker is inserted on the top of the first needle groove, and the yarn stopper is inserted between the sinkers;

[0006] A connecting pin is arranged between the knitting needle assemblies in the first needle groove and the second needle groove, and the knitting needle assemblies include a knitting needle, a long pin, and a spring pin. The front end of the long pin is embedded in the lower end of the knitting needle, and the connecting pin is embedded in the long pin so that the connecting pin pushes the knitting needle to rise under the drive of the mountain plate. The spring pin is arranged at the lower part of the first needle groove and the second needle groove, and the head end of the spring pin is located above the tail of the long pin. When the spring pin rises, the long pin is pressed into the first needle groove / the second needle groove to make the long pin detach from the connecting pin.

[0007] Furthermore, the connecting stitch includes a base, a first side wall, and a second side wall, the base is arranged between the head ends of the first side wall and the second side wall, the top surface of the base is provided with a connecting rear piece heel that cooperates with the mountain board, the bottom surface of the base is provided with a connecting front piece heel, and the middle part of the long stitch has a recessed position that cooperates with the connecting front piece heel.

[0008] Furthermore, arc-shaped spring pieces are arranged on the first side wall and the second side wall on a side facing the needle plate, and the arc-shaped spring pieces are in abutment with the needle plate.

[0009] Furthermore, the upper parts of the two side walls of the insert are provided with convex edges protruding outwards, so that the connecting pins are placed between the convex edges and the needle plate.

[0010] Furthermore, a first steel bar and a second steel bar are arranged on the upper part of the needle plate, one end of the sinker has a first axial hole, the first steel bar is passed through the first axial hole of the sinker, and the other end of the sinker is provided with a long hole, the second steel bar is passed through the long hole of the sinker, so that the sinker can swing back and forth around the first steel bar.

[0011] Furthermore, the upper end of the yarn blocking piece has a slot matched with the second steel bar, and the end of the yarn blocking piece away from the knitting needle assembly is provided with a slot.

[0012] Furthermore, the yarn blocking piece has a second axial hole, and the first steel bar is inserted into the second axial hole.

[0013] Furthermore, the knitting needle assembly in the first needle groove and the second needle groove also includes a needle selection foot, the upper section of the needle selection foot in the first needle groove is provided with a first needle selection tooth, and the lower section of the needle selection foot in the second needle groove is provided with a second needle selection tooth, the first needle selection tooth and the second needle selection tooth are offset by at least one needle selection position and are arranged in the first needle groove and the second needle groove in an orderly manner.

[0014] Furthermore, a plurality of first slots are arranged at intervals along the width direction on the needle plate, and a second slot is arranged between any adjacent first slots, so that the insert is inserted into the first slot and the spacer is inserted into the second slot.

[0015] Furthermore, both sides of the upper part of the insert have inwardly concave grooves, and the expansion pieces of the knitting needles in the first needle groove and the second needle groove are mirror-imaged so that the expansion pieces of the knitting needles are respectively placed in the grooves of the insert.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The utility model adopts a single-groove double-needle knitting method, and each insert is provided with a recessed position that cooperates with the loop-removing piece of the knitting needle, thereby reducing the space occupied by the knitting needle, and the upper part of the two side walls of each insert is provided with a convex edge protruding outward, so that the connecting pins are limited between the needle plate and the convex edge, which can prevent the connecting pins from shaking, and also greatly reduce the space occupied by the connecting pins, thereby greatly reducing the distance between the double needles, so that the knitting is tighter. (2) In the utility model, a yarn blocking piece is provided between any adjacent sinkers, so that when one of the knitting needles descends to form a loop, the yarn of the loop is blocked by the grooved side wall of the yarn blocking piece and the needle head of the other knitting needle, so as to prevent the yarn from running into the needle hook of the other knitting needle, thereby greatly improving the knitting stability and reducing the defective rate of the knitted fabric. (3) The sinker in the utility model can swing forward and backward, not only can it press the yarn when the knitting needle rises to withdraw the loop, but also when the knitting needle descends to form a loop, the sinker swings forward under the pull of the yarn, so that the yarn is not easily tightened when the knitting needle pulls it, and the length of the yarn being pulled down is increased, which greatly improves the looping speed. (4) The needle selection foot of the first needle groove in the utility model adopts the upper three-stage needle selection tooth design, and the needle selection foot of the second needle groove adopts the lower three-stage needle selection tooth design, thereby greatly reducing the frequency of being selected by the needle selector, thereby reducing the occurrence of needle slipping and skipping of the needle selection foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the needle plate;

[0020] Figure 3 To show Figure 2 Schematic diagram of the structure of part A in FIG.

[0021] Figure 4 It is a schematic diagram of the overall structure of the knitting needle assembly;

[0022] Figure 5 It is a schematic diagram of the overall structure of the insert;

[0023] Figure 6 It is a schematic diagram of the overall structure of the connection pins;

[0024] Figure 7 It is a connection diagram of connecting pins and long pins;

[0025] Figure 8 To show Figure 1 Schematic diagram of the structure of part B in FIG.

[0026] Fig. 9 It is the overall structural schematic diagram of the sinker;

[0027] Fig.10 It is a schematic diagram of the overall structure of the yarn blocking piece. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1-Figure 3 As shown, a novel single-slot double-needle needle plate device includes a needle plate 1, a plurality of knitting needle assemblies 2, a plurality of sinkers 3, and a plurality of yarn blocking pieces 5. The needle plate 1 is provided with a plurality of inserts 11 at intervals along the width direction, and a spacer 12 is provided between adjacent inserts 11. In this embodiment, a plurality of first slots 15 are provided on the needle plate 1 at intervals along the width direction, and a second slot is provided between adjacent first slots 15, wherein the inserts 11 are respectively inserted into the first slots 15, and the spacers 12 are respectively inserted into the second slots, so that a first needle groove 13 and a second needle groove 14 are formed between the spacers 12 and the inserts 11, and the knitting needle assemblies are respectively slidably provided in the first needle groove 13 and the second needle groove 14, and in addition, the sinkers 3 are respectively inserted into the top of the first slots 15 of the needle plate 1, and the yarn blocking pieces 5 are respectively inserted between any adjacent sinkers 3.

[0030] In this embodiment, the needle plate 1 is fixedly arranged on the flat knitting machine equipment, and a mountain plate is slidably arranged on the needle plate 1. The mountain plate is driven to move left and right by the machine head, so that the mountain plate can link the knitting needle assembly 2 in the needle plate 1 to perform weaving work. The connection relationship between the needle plate and the mountain plate and the linkage relationship between the mountain plate and several knitting needle assemblies are all existing technologies and will not be repeated here.

[0031] Combination Figure 3 , Figure 4As shown, further, a connecting pin 4 is provided between the knitting needle assembly 2 in the first needle groove 13 and the second needle groove 14. In this embodiment, the knitting needle assembly 2 includes a knitting needle 21, a long pin 22, a spring pin 23, and a selection pin 24 which are respectively slidably inserted in the first needle groove 13 and the second needle groove 14, wherein the front end of the long pin 22 is embedded in the lower end of the knitting needle 21, the spring pin 23 is arranged at the lower part of the long pin 22, and the head end of the spring pin 23 is arranged front and back relative to the rear side of the long pin 22, the selection pin 24 is arranged opposite to the spring pin 23, and the lower part of the selection pin 24 is provided with a selection pin rear heel below the spring pin 23, and the connecting pin 4 is embedded with the long pin 22.

[0032] The connection relationship and operation principle between the various components in the knitting needle assembly 2 of this embodiment are prior art and will not be repeated here.

[0033] Reference Figure 4 , Figure 6 , Figure 7 As shown, specifically, the connecting pin 4 includes a base 41, a first side wall 42, and a second side wall 43. The base 41 is arranged between the head ends of the first side wall 42 and the second side wall 43. The top surface of the base 41 is provided with a connecting rear heel 411 that cooperates with the mountain board, and the bottom surface of the base 41 is provided with a connecting front heel 412 that cooperates with the long pin 22, that is, the middle part of the long pin 22 has a recessed position 221 that cooperates with the connecting front heel 412, and when the long pin 22 is in an ascending state, it is embedded with the connecting pin 4.

[0034] Reference Figure 5 As shown, further, the upper part of the two side walls of the insert 11 protrudes outward and is provided with a convex edge 111, so that the adjacent inserts 11 are narrow at the top and wide at the bottom to form a sliding space for the knitting needle assembly 2. Therefore, when the connecting pin 4 is placed in the first needle groove 13 / the second needle groove 14, the first side wall 42 and the second side wall 43 of the connecting pin 4 respectively contact with the convex edge 111 of the insert 11, thereby avoiding shaking back and forth, greatly improving the working stability of the connecting pin, and preventing the connecting pin from escaping from the first needle groove 13 / the second needle groove 14, and there are inwardly concave grooves 112 on both sides of the upper part of the insert 11. In this embodiment, the expansion pieces of the knitting needle 21 in the first needle groove 13 and the second needle groove 14 are mirror-set, so that after the knitting needle 21 is respectively inserted into the first needle groove 13 / the second needle groove 14, the expansion pieces of the knitting needle 21 are respectively placed in the grooves 112 of the insert 11, thereby not only greatly reducing the distance between the partition 12 and the insert 11 and reducing the volume of the needle plate, but also reducing the interval between the double knitting needles, thereby reducing the needle pitch and ensuring tighter weaving.

[0035] In addition, an arc-shaped spring piece is provided on the first side wall 42 and the second side wall 43 on the side facing the needle plate 1, and the arc-shaped spring piece cooperates with the needle plate so that the first side wall 42 and the second side wall 43 are pressed against the convex edge 111 of the insert 11 under the elastic action of the arc-shaped spring piece, which greatly improves the stability of the connecting pins.

[0036] In this embodiment, the mountain board includes a first cam system, a second cam system, a left needle selector, and a right needle selector, wherein the first cam system and the second cam system in the mountain board also have three state positions, which are A position, H position, and B position from top to bottom, wherein the A position corresponds to a weaving press sheet, the H position corresponds to a left needle connecting press sheet, a left tuck eye press sheet and a right needle connecting press sheet, and the B state position corresponds to a non-weaving press sheet, and the first cam system, the second cam system, the left needle selector, the right needle selector in the mountain board and the coordination relationship between the three state positions and the knitting needle assembly are prior art and will not be repeated here.

[0037] Reference Figure 1 , Figure 8 As shown, in this embodiment, the upper section of the needle selection foot 24 in the first needle groove 13 is provided with a first needle selection tooth 241, and the lower section of the needle selection foot 24 in the second needle groove 14 is provided with a second needle selection tooth 242, and the height of the needle selection teeth of the needle selection foot 24 in every three groups of the first needle groove 13 and the second needle groove 14 gradually decreases from left to right, so that the first needle selection tooth 241 and the second needle selection tooth 242 are staggered by at least one needle selection position and are arranged in the first needle groove 13 and the second needle groove 14 in an orderly manner, and the needle selector in this embodiment is a six-section needle selector, thereby realizing the upper three sections and lower three sections design of the needle selection feet of the first needle groove and the second needle groove, wherein the upper three needle selection pieces of the needle selector are used to control the needle selection foot 24 in the first needle groove 13, and the lower three needle selection pieces of the needle selector are used to control the needle selection foot 24 in the second needle groove 14, thereby greatly reducing the frequency of the first needle groove 13 and the second needle groove 14 being selected by the needle selector, thereby reducing the occurrence of stitches and skipped stitches of the needle selection feet.

[0038] Reference Figure 1-Figure 7 As shown in the figure, when the machine head drives the mountain board to move to the left, the specific working principle is as follows:

[0039] 1. When the knitting needles of the first needle groove and the second needle groove are not knitting at the same time: the needle selecting feet 24 in the first needle groove 13 and the second needle groove 14 push the spring pin 23 upward to the B position respectively under the push of the left needle selector and the right needle selector of the mountain board, and the spring pin 23 sinks into the first needle groove 13 and the second needle groove 14 under the pressure of the non-knitting pressing plate, so that the concave position 221 of the long pin 22 of the first needle groove 13 and the second needle groove 14 is separated from the connecting front heel 412 of the connecting pin 4, so that the long pin 22 does not rise with the connecting pin 4, so that the double needles do not participate in knitting at the same time.

[0040] 2. When the knitting needles of the first needle groove and the second needle groove are tucked at the same time: the needle selecting feet 24 in the first needle groove 13 and the second needle groove 14 push the spring pin 23 upward to the H position respectively under the push of the left needle selector and the right needle selector of the mountain board, and at the same time, the connecting pin 4 pushes the long pins 22 of the first needle groove 13 and the second needle groove 14 upward to the second cam system under the action of the first cam system of the mountain board, and the left needle connecting pressure plate at the H position in the mountain board retracts, and the left tuck pressure plate extends, so that the knitting needles of the first needle groove 13 and the second needle groove 14 complete the tuck synchronously.

[0041] 3. When the knitting needles of the first needle groove and the second needle groove are connected at the same time: the needle selection pins 24 in the first needle groove 13 and the second needle groove 14 push the spring pin 23 upward to the H position respectively under the push of the left needle selector and the right needle selector of the mountain board, and at the same time, the connecting pin 4 pushes the long pins 22 of the first needle groove 13 and the second needle groove 14 upward to the second cam system under the action of the first cam system of the mountain board, and the left needle connection pressing plate at the H position in the mountain board extends, and the left tuck pressing plate retracts, so that the knitting needles of the first needle groove 13 and the second needle groove 14 complete the needle connection synchronously.

[0042] 4. When the knitting needles of the first needle groove and the second needle groove are knitting at the same time: the needle selecting feet 24 in the first needle groove 13 and the second needle groove 14 push the spring pin 23 upward to the A position respectively under the push of the left needle selector and the right needle selector of the mountain board, and at the same time, the connecting pin 4 pushes the long pins 22 of the first needle groove 13 and the second needle groove 14 upward to the second cam system under the action of the first cam system of the mountain board, and the left knitting pressing plate at the A position in the mountain board extends, and the left turning needle cam retracts, so that the knitting needles of the first needle groove 13 and the second needle groove 14 complete knitting synchronously.

[0043] 5. When the knitting needles of the first needle groove and the second needle groove are turned over at the same time: the needle selecting feet 24 in the first needle groove 13 and the second needle groove 14 push the spring pin 23 upward to the A position respectively under the push of the left needle selector and the right needle selector of the mountain board, and at the same time, the connecting pin 4 pushes the long pins 22 of the first needle groove 13 and the second needle groove 14 upward to the second cam system under the action of the first cam system of the mountain board, and the left knitting pressure plate at the A position in the mountain board retracts, and the left turning cam extends out, so that the knitting needles 21 of the first needle groove 13 and the second needle groove 14 complete the turning over synchronously.

[0044] 6. When the knitting needles of the first needle groove participate in knitting and the knitting needles of the second needle groove do not knit: the needle selecting pin 24 in the second needle groove 14 pushes the spring pin 23 upward to position B under the push of the right needle selecting device of the mountain board, so that the spring pin 23 presses the long pin 22 under the action of the non-knitting pressing plate, so that the concave position of the long pin 22 is separated from the connecting front heel of the connecting pin 4, and the needle selecting pin 24 in the first needle groove 13 pushes the spring pin 23 upward to position A under the push of the left needle selecting device of the mountain board, so that the connecting pin 4 pushes the long pin 22 in the first needle groove 13 upward to the second cam system under the action of the first cam system of the mountain board, and the long pin 22 of the second needle groove 14 does not rise with the connecting pin 4, so that the knitting needle 21 of the first needle groove 13 completes knitting, and the knitting needle 21 of the second needle groove 14 does not knit.

[0045] Specifically, when the knitting needles 21 in the first needle groove 13 participate in the work of turning stitches, connecting stitches, and tuck stitches, and the knitting needles 21 in the second needle groove 14 do not participate in knitting, the principle can refer to the above-mentioned working principles. In addition, when the knitting needles of the second needle groove 14 participate in knitting and the first needle groove 13 does not participate in knitting, the principle is the same as the above principle, so this embodiment will not be repeated here.

[0046] Reference Figure 1 , Fig. 9 As shown, the upper part of the needle plate 1 is provided with a first steel bar and a second steel bar, the rear end of the sinker 3 has a first axial hole 31, the first steel bar is passed through the first axial hole 31 of the sinker 3, the front end of the sinker 3 is provided with a long hole 32, and the second steel bar is passed through the long hole 32 of the sinker 3, so that the sinker 3 can swing back and forth around the first steel bar 18 under the action of the long hole 32.

[0047] Furthermore, a groove 33 is provided at the front end of the sinker 3, and the front end of the sinker 3 has a yarn blocking portion 35 in front of the groove 23, and the front end of the sinker 3 has a yarn pushing portion 36 below the hook groove 33, and a sinker heel 34 is also provided on the sinker 3. In this embodiment, the sinker heel 34 of the sinker 3 cooperates with the sinker component of the mountain board. The sinker component is an existing technology and will not be repeated here.

[0048] Specifically, when the knitting needle 21 rises and retracts the loop, the sinker is driven to swing forward by the sinker device, so that the hook groove 33 of the sinker presses the old thread loop on the knitting needle, helping the knitting needle to smoothly complete the retraction of the loop. After that, the sinker component of the mountain plate is linked to the sinker 3 to reset so as not to hinder the knitting needle from forming a loop, thereby preventing the old thread loop from rising with the knitting needle. In the process of the knitting needle descending and bending the yarn to form a loop, the yarn of the old loop rests on the yarn pushing part 36 of the sinker 3, and while the knitting needle pulls down the loop, the sinker component is linked to the sinker to drive the sinker to swing forward, and the old loop is pushed by the yarn pushing part of the sinker 3, thereby assisting the knitting needle to enlarge the loop, so that the knitting needle can successfully complete the weaving of the loop, thereby speeding up the looping speed of the loop and preventing the loop from being too tight when the knitting needle is forming a loop.

[0049] Reference Figure 1 , Fig.10 As shown, further, the yarn blocking piece 5 has a second axial hole 51, and the first steel bar is inserted into the second axial hole 51 to prevent the yarn blocking piece 5 from shifting, and the upper end of the yarn blocking piece 5 has a slot 52 that cooperates with the second steel bar to prevent the yarn blocking piece 5 from swinging, thereby greatly improving the stability of the yarn blocking piece 5.

[0050] Specifically, a slot 53 is provided at one end of the yarn blocking piece 5 away from the knitting needle assembly 2. When the knitting needle 21 in the first needle groove 13 hooks the coil and descends, if the knitting needle 21 in the second needle groove 14 does not participate in knitting, the slotted inner wall of the yarn blocking piece 5 cooperates with the knitting needle 21 in the second needle groove 14 to block the yarn of the coil, preventing the yarn of the coil from running into the needle hook of another knitting needle 21 under the pull of the knitting needle 21, thereby ensuring the stability of knitting and reducing the defective rate of the woven fabric.

[0051] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical scheme of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of single-groove double-needle needle plate device, characterized in that: The needle plate (1) comprises a needle plate (1), a knitting needle assembly (2), a sinker (3), and a yarn blocking piece (5); the needle plate (1) is provided with a plurality of inserting pieces (11) inserted at intervals along the width direction, and a spacer (12) is inserted between adjacent inserting pieces (11); a first needle groove (13) and a second needle groove (14) are formed between the spacer (12) and the inserting piece (11); the knitting needle assembly (2) is a pair and is slidably arranged in the first needle groove (13) and the second needle groove (14) respectively; the sinker (3) is inserted on the top of the first needle groove (13), and the yarn blocking piece (5) is inserted between the sinkers (3); A connecting pin (4) is provided between the knitting needle assembly (2) in the first needle groove (13) and the second needle groove (14). The knitting needle assembly (2) comprises a knitting needle (21), a long pin (22), and a spring pin (23). The front end of the long pin (22) is embedded in the lower end of the knitting needle (21). The connecting pin (4) is embedded in the long pin (22) so that the connecting pin (4) pushes the knitting needle (21) upward under the drive of the mountain plate. The spring pin (23) is provided at the lower part of the first needle groove (13) and the second needle groove (14), and the head end of the spring pin is located above the tail end of the long pin (22). When the spring pin (23) rises, it presses the long pin (22) into the first needle groove (13) / the second needle groove (14), so that the long pin (22) is separated from the connecting pin (4).

2. A novel single-groove double-needle needle plate device according to claim 1, characterized in that: The connecting pin (4) comprises a base (41), a first side wall (42), and a second side wall (43); the base (41) is arranged between the first end of the first side wall (42) and the head end of the second side wall (43); the top surface of the base (41) is provided with a connecting rear heel (411) that matches the mountain board; the bottom surface of the base (41) is provided with a connecting front heel (412); and the middle part of the long pin (22) has a concave position that matches the connecting front heel (412).

3. A novel single-groove double-needle needle plate device according to claim 2, characterized in that: A curved spring piece is provided on the first side wall (42) and the second side wall (43) on one side facing the needle plate (1), and the curved spring piece is in abutment with the needle plate.

4. A novel single-groove double-needle needle plate device according to claim 1, characterized in that: The upper part of the two side walls of the insert (11) is provided with convex edges (111) protruding outwards, so that the connecting pin (4) is placed between the convex edges (111) and the needle plate (1).

5. A novel single-groove double-needle needle plate device according to claim 1, characterized in that: A first steel bar and a second steel bar are arranged on the upper and lower parts of the needle plate (1); one end of the sinker (3) has a first axial hole (31); the first steel bar is passed through the first axial hole (31) of the sinker (3); the other end of the sinker (3) is provided with a long hole (32); the second steel bar is passed through the long hole (32) of the sinker (3), so that the sinker (3) can swing back and forth around the first steel bar.

6. A novel single-groove double-needle needle plate device according to claim 5, characterized in that: The upper end of the yarn blocking piece (5) has a slot (52) that matches the second steel bar, and the end of the yarn blocking piece (5) away from the knitting needle assembly (2) is provided with a slot (53).

7. A novel single-groove double-needle needle plate device according to claim 5, characterized in that: The yarn blocking piece (5) has a second axial hole (51), and the first steel bar is inserted into the second axial hole (51).

8. A novel single-groove double-needle needle plate device according to claim 1, characterized in that: The knitting needle assembly (2) in the first needle slot (13) and the second needle slot (14) further comprises a needle selection foot (24); the upper section of the needle selection foot (24) in the first needle slot (13) is provided with a first needle selection tooth (241); the lower section of the needle selection foot (24) in the second needle slot (14) is provided with a second needle selection tooth (242); the first needle selection tooth (241) and the second needle selection tooth (242) are at least offset by a needle selection position and are arranged in the first needle slot (13) and the second needle slot (14) in an orderly manner.

9. A novel single-groove double-needle needle plate device according to claim 1, characterized in that: A plurality of first slots (15) are arranged at intervals along the width direction on the needle plate (1), and a second slot is arranged between any adjacent first slots (15), so that the insert (11) is inserted into the first slot (15) and the spacer (12) is inserted into the second slot.

10. A novel single-groove double-needle needle plate device according to claim 1, characterized in that: Both sides of the upper part of the insert (11) are respectively provided with inwardly recessed grooves (112); the loop expansion pieces of the knitting needle (21) in the first needle groove (13) and the second needle groove (14) are arranged in a mirror image, so that the loop expansion pieces of the knitting needle (21) are respectively placed in the grooves (112) of the insert (11).

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