Double-color single-side jacquard circular weft knitting machine with control unit coils

Abstract

The invention relates to the technical field of textile machinery, in particular to a double-color single-side jacquard circular weft knitting machine with a control unit coil, which comprises a fixed piece, a knitting needle and a sinker, the sinker moves in a direction close to or far away from the fixed piece, the knitting needle comprises a needle rod, a needle hook and a needle latch, the sinker comprises a sinker body and a sinker nose, the sinker nose extends in a direction far away from the sinker body, and the sinker nose extends in a direction far away from the sinker body. The sheet nose and the fixing sheet have a synergistic relationship, and the sheet nose comprises a sheet nose upper surface, a sheet nose lower surface and a sheet nose transition surface; the state of the unit coils can be accurately controlled, the covering performance of the unit coils can be stable and controllable when yarn exchanges and platens, the yarn adaptability is wide, twisted short fiber yarn or continuous filaments with networks can be smoothly knitted, the knitting unit coils of floral patterns at the yarn exchange junction are neat and fine, and the yarn exchange plaiting effect is good. Therefore, the fabric is comparable to digital printed fabrics.

Description

Technical Field

[0001] The invention relates to the technical field of textile machinery, in particular to a two-color single-sided jacquard circular knitting machine with a control unit coil. Background Art

[0002] In the variable-gauge weave, the loop is composed of two yarns. During the weaving process, the two yarns fed are changed in position, so that the face yarn is sometimes above the base yarn and sometimes below the base yarn, thus forming a pattern.

[0003] When a traditional single-sided jacquard circular knitting machine is weaving a two-color pattern, the feeding position of the two yarns is changed by the structure of the yarn feeder itself or the matching structure. However, since there is still a distance between the yarn feeder and the position where the weft knitting machine implements knitting, even if the yarn feeder can immediately change the yarn position, the multiple knitting needles located far away can still grab the yarn in the unflipped position, resulting in the problem of residual image on the fabric, thereby causing product defects and poor sensory perception. The published patent application numbers CN117166124, CN114108168A, and CN112176511A all describe the knitting process of exchanging added yarns, which are the technology of sinker control and knitting needle control of the positive and negative overlap of two-color yarns, respectively. The precise control of the unit coil is not involved, and due to the type and characteristics of the yarn, it is difficult to weave the yarn with twist, resulting in a significant limitation on the quality and diversity of the pattern. Summary of the invention

[0004] The object of the present invention is to provide a two-color single-sided jacquard circular knitting machine with a control unit yarn loop, which solves the problems of poor coverage and poor fabric texture at the turning junction of the exchange yarn pattern by controlling the yarn length of the unit coil and the mutual configuration relationship of the loop yarn position, so as to solve the problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts such technical solution: A two-color single-sided jacquard circular knitting machine with a control unit coil, comprising a fixing plate embedded in a needle cylinder nozzle, a knitting needle moving up and down in a manner orthogonal to the fixing plate, and a sinker moving horizontally forward and backward in a manner orthogonal to the knitting needle, the sinker moving in a direction close to or away from the fixing plate, the knitting needle comprising a needle bar, a needle hook, and a needle tongue capable of opening and closing relative to the needle hook; The sinker plate includes a plate body and a plate nose connected to the plate body, the plate nose extends in a direction away from the plate body and has a cooperative relationship with the fixed plate, and the plate nose includes a plate nose upper surface, a plate nose lower surface and a plate nose transition surface connecting the plate nose upper surface and the plate nose lower surface.

[0006] Furthermore, the nose transition surface includes a first transition surface and a second transition surface connected to each other, the first transition surface is connected to the upper surface of the nose, and the second transition surface is connected to the lower surface of the nose, and the upper surface of the nose and the lower surface of the nose are both inclined surfaces inclined upward from the inside to the outside.

[0007] Furthermore, the first transition surface is in an arc shape, and the second transition surface is an inclined surface that slopes downward from the inside to the outside.

[0008] Furthermore, a step is provided between the sheet nose and the sheet body, and a sheet throat is formed between the lower surface of the sheet nose, the step and the upper surface of the fixing sheet.

[0009] Furthermore, the interval between the throats is greater than the diameter of one yarn and less than the sum of the diameters of two yarns.

[0010] Furthermore, the upper surface of the fixing plate has a limiting inclined surface with an inclination angle opposite to that of the second transition surface.

[0011] Furthermore, a sinker inclined surface and a fixed plate inclined surface are also provided at relative positions between the sinker and the fixed plate, and both the sinker inclined surface and the fixed plate inclined surface are inclined surfaces inclined downward from the inside to the outside, and the sinker inclined surface and the fixed plate inclined surface are arranged parallel to each other; when the sinker does not interact with the fixed plate, the height of the sinker inclined surface is lower than the height of the fixed plate inclined surface.

[0012] In order to achieve the above object, the present invention also adopts such technical solution: A two-color single-sided jacquard circular knitting machine with a control unit yarn loop, including an exchange-insertion mode and a non-exchange-insertion mode. When the sinker is pushed back along the track and interacts with the fixed plate, the exchange-insertion mode is turned on; when the sinker is pushed back along the track and the exchange-insertion mode is turned on; when the sinker is not pushed back along the track and does not interact with the fixed plate, the non-exchange-insertion mode is turned on. When the exchange and adding yarn mode is turned on, after the knitting needle hooks the yarn B, the needle tongue is closed, the yarn B is located above the arc of the nose of the sinker, and the yarn A is below the nose of the sinker. The knitting needle moves downward, and the old coil slides toward the needle head to push the yarn A in the needle hook to the second transition surface below the nose. The inclined surface of the second transition surface has a guiding effect to make the yarn A slide along the inclined edge of the second transition surface to the inside of the needle hook and close to the needle rod. The sinker further retreats and the yarn B slides close to the needle hook. The yarn A squeezes the yarn B to make it close to the outside of the needle hook. The coil and the new coil A yarn and B yarn that are about to be formed are separated on both sides of the needle tongue, in preparation for the new coil A yarn and B yarn to pass through the old coil, the knitting needle descends and the old coil moves along the needle tongue to the top of the needle head, the A yarn and B yarn begin to bend gradually and continue until they are strung into a loop, the extension lines at both ends of the unit coil contact the fixed plate, the shape of the needle hook is consistent with the angle of the limiting inclined surface, the A yarn is on the inside of the needle hook and the B yarn is on the outside of the needle hook, so that the two yarns exchange positions, the A yarn is above the B yarn, and due to the height difference formed by the inclined contact, the yarn length of the A yarn is greater than the length of the B yarn; When the non-exchange adding yarn mode is turned on, yarn A is below the needle hook and above the needle tongue, which is also the position of the fixed plate. Yarn B is hooked by the knitting needle and is close to the needle bar of the knitting needle. Before the loop is removed, since the position of the needle bar close to the needle hook has been occupied by yarn B, yarn A forms a certain horizontal and vertical angle close to the needle tongue when the needle tongue of the knitting needle is closed, and the old coil and the new coil B yarn and yarn A that are about to be formed are separated on both sides of the needle tongue, preparing for the new coil B yarn and yarn A to pass through the old coil. The knitting needle descends and the old coil moves along the needle tongue to the top of the needle head. Yarn B and yarn A begin to bend gradually and continue until they are strung into a loop. Yarn B and yarn A bend together and contact the bottom of the fixed plate. The shape of the needle hook matches the angle of the limiting inclined surface of the fixed plate. Yarn B is above yarn A. Due to the height difference formed by the inclined contact, the yarn is further bent into a loop, so that the yarn length of yarn B is greater than the line length of yarn A.

[0013] By adopting the above-mentioned design scheme, the beneficial effects of the present invention are as follows: the extension line of the previous knitting needle that has already formed a loop and the adjacent linked loop of the next knitting needle that is about to form a loop are crossed, while the extension lines are parallel. The angle between the limiting inclined surface of the front fixed plate and the needle hook shape of the knitting needle when the yarn is bent into a loop is then cut to fix the front and back order of the yarn, and the loop column is then arranged according to the order of the needle loop so that the loop column covers the configuration relationship on the previous loop arc, and the coverage of the unit loop on the front side of the fabric is clearly displayed; the present invention can accurately control the state of the unit loop, and can achieve stable and controllable coverage of the unit loop when the yarn is exchanged and added yarn, and the yarn has a wide adaptability. Short fiber yarn with twist or continuous filament with a network can be smoothly woven, and the pattern is neat and delicate at the junction of the yarn exchange, and the unit loops are covered with each other, which is comparable to digitally printed fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a weft knitting coil; Figure 2 It is a structural schematic diagram of the present invention; Figures 3 to 6 A schematic diagram of the positions of the A yarn and the B yarn in the needle hook when the sinker and the knitting needle are interwoven in the present invention; In the figure: fixed plate 1, limiting inclined surface 11, fixed plate inclined surface 12, knitting needle 2, needle bar 21, needle hook 22, needle tongue 23, sinker 3, sheet body 31, sheet nose 32, sheet nose upper surface 321, sheet nose lower surface 322, first transition surface 323, second transition surface 324, step 325, sheet throat 33, sinker inclined surface 34, jacquard sheet 4, needle cylinder 5. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The terms "first", "second", "third", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0017] Reference Figures 1 to 6 : For the convenience of description, the side close to the center of the needle cylinder 5 is defined as the inner side, and the opposite side is defined as the outer side. In the figure, yarn A is marked A, and yarn B is marked B.

[0018] A two-color single-sided jacquard circular knitting machine with a control unit coil comprises a needle cylinder 5, a fixing plate 1 embedded in the mouth of the needle cylinder 5, a knitting needle 2 connected to the fixing plate 1 in an orthogonal manner, and a sinker 3 connected to the knitting needle 2 in an orthogonal manner, and the sinker 3 is arranged on the outside of the fixing plate 1. Preferably, the knitting needle 2 moves up and down in the needle cylinder 5 along the axial direction of the needle cylinder 5, and the sinker 3 is driven by the jacquard plate 4 and moves in a direction close to or away from the fixing plate 1, and the jacquard plate 4 can perform the activities of pushing and holding the sinker 3 of the program editing needle selector action. It is worth noting that a plurality of fixing plates 1, knitting needles 2 and sinkers 3 are provided in the present application, and the present application only elaborates on this embodiment with one group of fixing plates 1, knitting needles 2 and sinkers 3 that move relative to each other.

[0019] It is worth noting that the weft knitting coil structure in this embodiment is composed of a coil stem (II-H-II) and an extension line (IHI), wherein the straight line segment (II) of the coil stem becomes a coil column, the arc segment (H) becomes a needle knitting arc, and the extension line (IHI) is also called a sinking arc, which connects two adjacent unit coils. Figure 1 The arrows in the figure indicate the curling phenomenon in the 3D coil morphology, such as the upper and lower edges curling toward the front side and the left and right edges curling toward the back side.

[0020] The knitting needle 2 includes a needle bar 21, a needle hook 22, and a needle tongue 23 that can be opened and closed relative to the needle hook 22. The sinker 3 includes a sheet body 31 and a sheet nose 32 connected to the sheet body 31, the sheet nose 32 extends inwardly and has a cooperative relationship with the fixed sheet 1. It is worth noting that the sinker 3 in this embodiment is a one-piece sinker 3, which is integrally formed.

[0021] The nose 32 includes an upper nose surface 321, a lower nose surface 322, and a first transition surface 323 and a second transition surface 324 connecting the upper nose surface 321 and the lower nose surface 322 and connecting with each other. The first transition surface 323 is connected with the upper nose surface 321, and the second transition surface 324 is connected with the lower nose surface 322. The upper nose surface 321 and the lower nose surface 322 are both inclined surfaces inclined upward from the inside to the outside, which is convenient for guiding the A yarn to slide from the nose 32 to the knitting needle 2. Its main function is to assist the subsequent holding of the coil to withdraw the coil; the first transition surface 323 is circular The second transition surface 324 is an inclined surface that is inclined downward from the inside to the outside. The inclined surface of the second transition surface 324 has a guiding function. When knitting, after the knitting needle 2 moves along the triangular track to hook the B yarn, the knitting needle 2 descends and the needle tongue 23 is turned upward by the old coil and is in a semi-closed state, and the B yarn is on the upper surface 321 of the sheet nose; the knitting needle 2 further moves downward and the old coil slides toward the needle hook 22 to push the A yarn in the needle hook 22 to the lower surface 322 of the sheet nose, and through the second transition surface 324, the A yarn slides along the second transition surface 324 to the inner side of the needle hook 22 close to the needle rod 21 (such as Figure 3 At this time, the sinker 3 further retreats and the yarn B will slide near the needle hook 22 due to the horizontal angle of the yarn feeding, and the yarn A will slide to the upper surface 321 of the nose through the first transition surface 323, and the yarn A will occupy the yarn B and make it close to the outer side of the needle hook 22 (such as Figure 4 ).

[0022] Furthermore, a step 325 is provided between the plate nose 32 and the plate body 31. When the sinker 3 retreats to the rearmost position and the plate nose 32 moves inwardly to above the fixed plate 1, a plate throat 33 is formed between the lower surface 322 of the plate nose, the step 325 and the upper surface of the fixed plate 1. The upper surface of the fixed plate 1 has a limiting inclined surface 11 with an inclination angle opposite to that of the second transition surface 324. The limiting inclined surface 11 and the second transition surface 324 can better fix the sequence of yarn A in front and yarn B behind. The second transition surface 324 will not be affected by the shaking generated by the movement of the traditional sinker 3. The limiting inclined surface 11 can more accurately match the angle when the needle hook 22 of the knitting needle 2 bends the yarn into a loop to fix the front and back sequence of yarn A and yarn B. There is no space for the two yarns to slide or roll over each other (such as Figure 5 ).

[0023] Furthermore, in order to avoid fixing the front and rear sequence of yarn A and yarn B at the throat 33, the spacing of the throat 33 is larger than the diameter of yarn A or the diameter of yarn B and smaller than the sum of the diameters of yarn A and yarn B, so as to avoid the yarn in an unflipped position. A sinker inclined surface 34 and a fixed plate inclined surface 12 are also provided at relative positions between the sinker 3 and the fixed plate 1. Both the sinker inclined surface 34 and the fixed plate inclined surface 12 are inclined surfaces that are inclined downward from the inside to the outside, and the sinker inclined surface 34 and the fixed plate inclined surface 12 are provided parallel to each other. When the sinker 3 does not interact with the fixed plate 1, the height of the sinker inclined surface 34 is lower than the height of the fixed plate inclined surface 12. When the sinker 3 moves forward and interacts with the knitting needle 2, the sinker inclined surface 34 will slide up along the guide of the fixed plate inclined surface 12. At this time, the end of the sinker 3 close to the fixed plate 1 is lifted up to a height h (such as Figure 6 ).

[0024] When the knitting needle 2 forms a loop, the position of the limiting inclined surface 11 has a height difference relative to the contact surface of the needle hook 22 of the knitting needle 2 when forming a loop, thereby causing the length of the unit coil to change. The A yarn close to the needle bar 21 of the knitting needle 2 and the B yarn close to the needle hook 22 of the knitting needle 2 form a complete loop knitting system. The action required by the pattern is always the front and back flip knitting of the A yarn and the B yarn. According to the knitting principle of the known inlay yarn process, the coil length of the inlay yarn is greater than the coil length of the bottom yarn, and the horizontal and vertical angles of the inlay yarn can better cover and is not easy to expose the bottom. The above technical route fully meets the basic properties of the inlay yarn knitting process and can better adapt to the knitting of various yarns on the machine.

[0025] In this embodiment, the height difference between the inclined surface 34 of the sinker and the inclined surface 12 of the fixing plate is utilized, and the end of the sinker 3 close to the fixing plate 1 is lifted upward by a height h, so that the position of the lower surface 322 of the plate nose can be lowered to the spacing (i.e., the spacing of the plate throat 33) through which the yarn diameter of the unit coil sinking arc of the limiting inclined surface 11 passes. When the knitting needle 2 forms a loop, the position of the A yarn and the B yarn is blocked by the advancement of the plate nose 32 and when the loop is removed, the yarn under the second transition surface 324 is guided close to the needle bar 21, so that the yarn position state is completely and accurately controlled, and is consistent with the adjacent formed loops. The positions of the knitting needles 2 of the loop are separated by only one fixed plate 1. For example, the extension line of the previous knitting needle 2 that has formed a loop is turned over and the adjacent linking coil of the next knitting needle 2 that is about to form a loop is crossed, otherwise the extension lines are parallel. The angle between the limiting inclined surface 11 of the front fixed plate 1 and the needle hook 22 of the knitting needle 2 when the yarn is bent into a loop is cut to fix the front and rear order of the yarn. The coil column is then arranged according to the order of the needle arc so that the coil column covers the configuration relationship on the previous coil arc, and the coverage of the unit coil on the front side of the fabric is clearly shown. This embodiment conforms to the weaving principle of the known inlay yarn process. The coil length of the inlay yarn is greater than the coil length of the bottom yarn, and the horizontal and vertical angles of the inlay yarn can better cover. The yarn count of the exchange inlay yarn jacquard weaving is mostly the same. This case has been tested for several years. Fabric parameters such as the coordinated requirements of the yarn itself (linear density, stiffness, friction coefficient), coil length and unfilled coefficient, and the corresponding devices have been developed to weave high-quality two-color inlay yarn jacquard fabrics. It is worth mentioning that the woven fabric with a small spacing between the throats 33 has a short extension line, the front side shows the circle column of the face yarn, the back side shows the circle arc of the bottom yarn, the fabric surface has good density, is relatively flat and crisp, and the woven fabric with a large spacing between the throats 33 has a long extension line, the fabric surface is relatively clear and has better elasticity.

[0026] The throat 33 of the coil is held between the sinker 3 and the second inclined surface. When the knitting needle 2 rises, the sinker 3 is pushed toward the center of the needle cylinder 5 and the sinker 3 provided with the second transition surface 324 is pushed here to change the distance between the sinker 3 and the limiting inclined surface 11, which can better hold the coil and will no longer damage or affect the sequence of the yarn feeding process during advancement, thereby meeting the basic requirements of weaving; a further advantage is that since the throat 33 is modular, the distance of the throat 33 can be changed by replacing sinkers 3 or limiting inclined surfaces 11 of different sizes, thereby weaving fabrics of different styles.

[0027] When in use, when the A yarn and the B yarn are fed into the yarn guide and bent into a loop, the sinker 3 can be retracted and maintained according to the weaving process. The jacquard piece 4 controls the sinker 3 through a program to weave a two-color pattern of precise unit coils, and multiple combinations can be made according to the pattern design requirements. In addition, the action of the lower drum jacquard needle selector can be combined with the unit coil knitting needle 2 at the junction of the pattern conversion to cooperate with the change of the needle pressing depth. The dynamic change of the line length of the knitting needle 2 at the junction of the pattern conversion is conducive to the stability of the front-to-back position relationship between the A yarn and the B yarn. The knitting needle 2 corresponding to the exchange position and the controlled unit coil on the left and right of the sinker 3 control the length of the sinker arc intersection to be shorter. The beneficial effect is to play a connecting role for the next looped unit coil, not only fix the front-to-back position of the last unit coil before the previous pattern converter, but also position the unit coil at the first junction, and pave the way for the position relationship between the A yarn and the B yarn to ensure the position of the added yarn is accurate and stable, and prevent the defect of only covering half of the coil or incomplete coverage. Compared with the conventional added yarn coil length, it is preferably slightly shorter and flexibly adjustable, and can adapt to different yarns for subdivision adjustment. Of course, the length of the conventional added yarn coil can also be lengthened, which is opposite to the above, so as to present another cross color uniform mixing and natural transition effect at the border of the pattern conversion.

[0028] Specifically realize the two actions of exchanging yarn: 1. When the sinker 3 is pushed forward after the jacquard piece 4 moves and retreats along the track, the knitting needle 2 hooks the yarn B and the needle tongue 23 is closed. The yarn B is located above the arc of the nose 32 of the sinker 3, and the yarn A is below the nose 32 of the sinker 3. The knitting needle 2 further moves downward and the old coil slides toward the needle head to push the yarn A in the needle hook 22 to the second transition surface 324 below the nose 32. The inclined surface of the second transition surface 324 has a guiding effect to make the yarn A slide along the inclined edge of the second transition surface 324 to the inner side of the needle hook 22 and close to the needle bar 21. At this time, the sinker 3 retreats further and the yarn B slides near the needle hook 22. The yarn A squeezes the yarn B to make it close to the outside of the needle hook 22. The old coil and the new coil A and B yarns to be formed are separated on both sides of the needle tongue 23, preparing for the new coil A and B yarns to pass through the old coil. When the knitting needle 2 descends, the old coil moves outward along the needle tongue 23 to the top of the needle head. The A yarn and the B yarn begin to bend gradually and continue until they are strung into a loop. The extension lines at both ends of the unit coil are in contact with the fixed plate 1. The shape of the needle hook 22 is consistent with the angle of the limiting inclined surface 11 of the fixed plate 1. The A yarn is on the inside of the needle hook 22 and the B yarn is on the outside of the needle hook 22, thereby achieving the effect of exchanging the positions of the two yarns. The A yarn is above the B yarn, and due to the height difference formed by the inclined contact, the yarn is further bent into a loop, so that the yarn length of the A yarn is greater than the length of the B yarn.

[0029] 2. When the jacquard piece 4 is not moving, yarn B is no longer in contact with the sinker 3, and yarn A is under the needle hook 22 and above the needle tongue 23, that is, at the position of the fixed plate. Yarn B is hooked by needle 2 and close to the needle hook 22 and needle bar 21 of needle 2. Before the loop is unhooked, since the position of the needle bar 21 close to the needle hook 22 has been occupied by yarn B, yarn A forms a certain horizontal and vertical angle close to the needle tongue 23 when the needle tongue 23 of needle 2 is closed. The old coil and the new coil B yarn and yarn A to be formed are separated on both sides of the needle tongue 23, preparing for the new coil B yarn and yarn A to pass through the old coil. When the knitting needle 2 descends, the old coil moves outward along the needle tongue 23 to the top of the needle head. The yarn B and the yarn A begin to bend gradually and continue until they are strung into a loop. The yarn B and the yarn A are bent together and contact the bottom of the fixed plate 1. The shape of the needle hook 22 is in line with the angle of the limiting inclined surface 11 of the fixed plate 1. The yarn B is above the yarn A, and due to the height difference formed by the inclined contact, the yarn is further bent into a loop, so that the yarn length of the yarn B is greater than the line length of the yarn A.

[0030] By adopting the above-mentioned design scheme, the beneficial effects of the present invention are as follows: when the weaving process sinker 3 is controlled by the jacquard piece 4 to perform program editing retraction and holding action, the length of the unit coil of the B yarn covering the A yarn is longer than the A yarn when the position B yarn is maintained, and the length of the unit coil of the A yarn covering the B yarn is longer than the B yarn when advancing and retracting to the corresponding position. The loop yarn length of the two methods is consistent, and the added yarn is always longer than the bottom yarn. The fabric has good flatness, and the texture and physical properties of the two-color mutual covering are comparable. Based on the added yarn process organization, the fabric does not have the dotted line problem of the traditional single-sided two-color jacquard, and the wearing performance is significantly improved. By changing the triangle and the arrangement of the knitting needles to further enrich the composite organization and the knitting process, the fabric texture and the pattern can be organically combined.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-color single-sided jacquard circular knitting machine with a control unit coil, characterized in that: It includes a fixing plate embedded in the nozzle of the needle cylinder, a knitting needle that moves up and down in a manner orthogonal to the fixing plate, and a sinker that moves horizontally forward and backward in a manner orthogonal to the knitting needle, the sinker moves in a direction close to or away from the fixing plate, and the knitting needle includes a needle rod, a needle hook, and a needle tongue that can be opened and closed relative to the needle hook; The sinker plate includes a plate body and a plate nose connected to the plate body, the plate nose extends in a direction away from the plate body and has a cooperative relationship with the fixed plate, and the plate nose includes a plate nose upper surface, a plate nose lower surface and a plate nose transition surface connecting the plate nose upper surface and the plate nose lower surface.

2. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 1, characterized in that: The nose transition surface includes a first transition surface and a second transition surface connected to each other, the first transition surface is connected to the upper surface of the nose, and the second transition surface is connected to the lower surface of the nose. Both the upper surface of the nose and the lower surface of the nose are inclined surfaces inclined upward from the inside to the outside.

3. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 2, characterized in that: The first transition surface is in an arc shape, and the second transition surface is an inclined surface that slopes downward from the inside to the outside.

4. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 1, characterized in that: A step is arranged between the sheet nose and the sheet body, and a sheet throat is formed between the lower surface of the sheet nose, the step and the upper surface of the fixing sheet.

5. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 4, characterized in that: The interval between the throats is greater than the diameter of one yarn and less than the sum of the diameters of two yarns.

6. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 2, characterized in that: The upper surface of the fixing plate has a limiting inclined surface with an inclination angle opposite to that of the second transition surface.

7. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 1, characterized in that: A sinker inclined surface and a fixed plate inclined surface are also provided at relative positions between the sinker and the fixed plate, and both the sinker inclined surface and the fixed plate inclined surface are inclined surfaces inclined downward from the inside to the outside, and the sinker inclined surface and the fixed plate inclined surface are arranged parallel to each other; when the sinker does not interact with the fixed plate, the height of the sinker inclined surface is lower than the height of the fixed plate inclined surface.

8. The two-color single-sided jacquard circular knitting machine with a control unit coil according to claim 6, characterized in that: It includes an exchange and add yarn mode and a non-exchange and add yarn mode. When the sinker is pushed back along the track and interacts with the fixed plate, the exchange and add yarn mode is started; when the sinker is pushed back along the track and the exchange and add yarn mode is started; when the sinker is not pushed back along the track and does not interact with the fixed plate, the non-exchange and add yarn mode is started; When the exchange and adding yarn mode is turned on, after the knitting needle hooks the yarn B, the needle tongue is closed, the yarn B is located above the arc of the nose of the sinker, and the yarn A is below the nose of the sinker. The knitting needle moves downward, and the old coil slides toward the needle head to push the yarn A in the needle hook to the second transition surface below the nose. The inclined surface of the second transition surface has a guiding effect to make the yarn A slide along the inclined edge of the second transition surface to the inside of the needle hook and close to the needle rod. The sinker further retreats and the yarn B slides close to the needle hook. The yarn A squeezes the yarn B to make it close to the outside of the needle hook. The coil and the new coil A yarn and B yarn that are about to be formed are separated on both sides of the needle tongue, in preparation for the new coil A yarn and B yarn to pass through the old coil, the knitting needle descends and the old coil moves along the needle tongue to the top of the needle head, the A yarn and B yarn begin to bend gradually and continue until they are strung into a loop, the extension lines at both ends of the unit coil contact the fixed plate, the shape of the needle hook is consistent with the angle of the limiting inclined surface, the A yarn is on the inside of the needle hook and the B yarn is on the outside of the needle hook, so that the two yarns exchange positions, the A yarn is above the B yarn, and due to the height difference formed by the inclined contact, the yarn length of the A yarn is greater than the length of the B yarn; When the non-exchange adding yarn mode is turned on, yarn A is below the needle hook and above the needle tongue, which is also the position of the fixed plate. Yarn B is hooked by the knitting needle and is close to the needle bar of the knitting needle. Before the loop is removed, since the position of the needle bar close to the needle hook has been occupied by yarn B, yarn A forms a certain horizontal and vertical angle close to the needle tongue when the needle tongue of the knitting needle is closed, and the old coil and the new coil B yarn and yarn A that are about to be formed are separated on both sides of the needle tongue, preparing for the new coil B yarn and yarn A to pass through the old coil. The knitting needle descends and the old coil moves along the needle tongue to the top of the needle head. Yarn B and yarn A begin to bend gradually and continue until they are strung into a loop. Yarn B and yarn A bend together and contact the bottom of the fixed plate. The shape of the needle hook matches the angle of the limiting inclined surface of the fixed plate. Yarn B is above yarn A. Due to the height difference formed by the inclined contact, the yarn is further bent into a loop, so that the yarn length of yarn B is greater than the line length of yarn A.

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