Circular knitting machine adjusting system and method

Abstract

The invention relates to a circular knitting machine adjusting system and method. The machine adjusting system comprises the circular weft knitting machine and the machine adjusting device, the circular weft knitting machine comprises a servo motor, an external control and a control instruction, the external control is used for controlling the servo motor to start in a stepping mode, and the servo motor rotates by an accurate angle every time machine adjusting personnel triggers the external control. After rough adjustment, for various triangular blocks needing to be finely adjusted, a machine adjusting worker only needs to finely adjust one triangular block of each type of triangular blocks in a visual inspection mode, and for other triangular blocks of the various triangular blocks, the machine adjusting worker can visually determine the positions of the triangular blocks through the machine adjusting device without consuming too much time and energy to observe the positions of the triangular blocks, and the machine adjusting precision is higher. A machine adjusting worker can freely select whether to adjust the upper triangular block or the lower triangular block firstly, all the lower triangular bases need to be disassembled along with the lower triangular block when the upper triangular block is adjusted, a position is vacated for a machine adjusting device, and similarly, all the upper triangular bases need to be disassembled along with the upper triangular block when the lower triangular block is adjusted.

Description

Technical Field

[0001] This invention relates to the field of knitting, and more particularly to a circular knitting machine adjustment system. This invention also relates to a method for adjusting a circular knitting machine. Background Technology

[0002] The circular knitting machine has a ball bearing tray driven by an electric motor, see [link / reference] Figure 1 The upper needle plate P is located on the upper side of the beaded disc, and the lower needle cylinder Q is located circumferentially. The needles in the upper needle plate P move laterally along the needle groove, and the needles in the lower needle cylinder Q move longitudinally along the needle groove. The circular knitting machine also has triangular blocks (also called corner blocks or rhombus blocks) for moving the needles. The triangular block corresponding to the upper needle plate P is the upper triangular block X1, and the triangular block corresponding to the lower needle cylinder Q is the lower triangular block Y1. The needle has a needle foot S. The triangular blocks are divided into different types according to the shape of the needle rail, such as loop triangular blocks, float triangular blocks, etc., as detailed in patent document CN113123009A. The needle foot S is inserted into the needle rail. After the beaded disc rotates, the needle foot S moves along the needle rail, causing the needle to move in the needle groove.

[0003] The upper triangular block X1 is installed on the upper triangular seat X, and the lower triangular block Y1 is installed on the lower triangular seat Y. By turning the adjusting head X2, the position of the upper triangular block X1 relative to the upper triangular seat X along the horizontal needle movement direction can be adjusted, and the position of the lower triangular block Y1 relative to the lower triangular seat Y along the vertical needle movement direction can be adjusted. The process of adjusting the position of each triangular block is the machine adjustment process of the circular knitting machine.

[0004] The number of triangular blocks in a complete circle of a circular knitting machine is generally 50 to 108. Different types of triangular blocks are matched according to the requirements of the type of fabric being woven. Triangular blocks of the same needle track type are set at equal angular intervals relative to the rotation direction of the bead plate. The purpose of adjusting the machine is to adjust the triangular blocks of the same needle track type to the same height position to ensure that the fabric texture is consistent after knitting.

[0005] Currently, the adjustment process generally relies on the operator's visual inspection to ensure the precise position of each triangular block. This method is highly dependent on the operator's experience. If the operator's skill level is low, the accuracy of the adjusted triangular blocks may not meet the requirements of some high-grade fabrics. Furthermore, the motors used in conventional circular knitting machines are ordinary motors. Therefore, during the adjustment of the triangular blocks, it is necessary to manually crank the upper needle plate and lower needle cylinder. Since the motor can only rotate in one direction, if the position of the triangular block to be adjusted is missed, it is necessary to rotate it nearly 360 degrees to reach the required angle, which is time-consuming and laborious. Summary of the Invention

[0006] The primary objective of this invention is to improve the existing circular knitting machine adjustment system, thereby reducing the difficulty of adjustment and increasing the efficiency of adjustment.

[0007] The second objective of this invention is to provide a machine adjustment method applicable to a new circular knitting machine adjustment system.

[0008] To achieve the above objectives, the present invention provides a circular knitting machine adjustment system, comprising a circular knitting machine and an adjustment device; the circular knitting machine includes at least a servo motor, an external control for driving the servo motor to perform step-type start, and a controller for driving the servo motor to perform adjustment operations; the servo motor serves as a power source for driving the upper needle plate and the lower needle cylinder to rotate synchronously; the controller is used to execute preset control commands, so that when the servo motor is in the adjustment operation, it drives the upper needle plate and the lower needle cylinder to deflect at a preset angle; the adjustment device includes a base and a measuring instrument, the measuring instrument being fixed on the base, the measuring instrument including an indicator and a floating rod, the indicator being used to indicate the position of the floating rod to the adjustment personnel; when adjusting the position of the upper triangular block, the base and the lower needle cylinder are detachably fixedly connected, and the floating rod directly or indirectly abuts against the needles in the needle groove of the upper needle plate; when adjusting the position of the lower triangular block, the base and the upper needle plate are detachably fixedly connected, and the floating rod directly or indirectly abuts against the needles in the needle groove of the lower needle cylinder.

[0009] The present invention also provides a method for adjusting a circular knitting machine, the method comprising: Upper triangular block adjustment steps: S11: The lower delta seats are not installed on the saddle. The upper delta seats, along with the upper delta blocks, are installed on the center. The machine tuner then makes a preliminary adjustment to the relative positions between the upper delta blocks and the upper delta seats. S12: The machine technician selects the type of upper triangular block to be precisely adjusted, selects one of each type of upper triangular block as a sample upper triangular block, and precisely adjusts the relative position between each sample upper triangular block and the corresponding upper triangular seat. S13: Insert a knitting needle into the upper needle plate and position its needle foot at a predetermined position on the needle rail of one of the aforementioned sample upper triangular blocks. Fix the base of an adjustment device to the outer wall of the lower needle cylinder, so that the floating top rod of the measuring instrument directly or indirectly abuts against the top of the knitting needle, and mark the position indicated by the indicator on the measuring instrument as the reference position of the upper triangular block of the sample. S14: Press the external control to drive the servo motor to rotate the knitting needle along its rotation direction to the predetermined position of the upper triangular block needle rail of the same type in the next path. The predetermined position of the upper triangular block needle rail is the same as the predetermined position of the upper triangular block needle rail in the sample. Adjust the relative position between the upper triangular block and the upper triangular seat in this path so that the indicator of the measuring instrument stops at the reference position, and complete the precise adjustment of the position of the upper triangular block in this path. Repeat this process until the precise adjustment of the position of all upper triangular blocks of this type is completed. S15: Then move the needle to the predetermined position of the upper triangle block needle rail of another aforementioned sample, and repeat step S14 until the precise adjustment of the positions of all upper triangle blocks of all specified types is completed; After completing the precise adjustment of all specified type upper triangular blocks, detach each upper triangular block and its corresponding upper triangular support from the center core. Then, install each lower triangular block and its corresponding lower triangular support onto the saddle. Begin the lower triangular block adjustment steps: S21: The machine technician makes a preliminary adjustment to the relative positions of each lower triangular block and each lower triangular seat; S22: The machine technician selects the type of lower triangular block to be precisely adjusted, selects one of each type of lower triangular block as a sample lower triangular block, and precisely adjusts the relative position between each sample lower triangular block and the corresponding lower triangular seat. S23: Insert a knitting needle into the lower needle cylinder and position its needle foot at a predetermined position on the needle rail of one of the aforementioned sample lower triangular blocks. Fix the base of an adjustment device to the top end face of the upper needle plate, so that the floating top rod of the measuring instrument directly or indirectly abuts against the top of the knitting needle, and mark the position indicated by the indicator on the measuring instrument as the reference position of the sample lower triangular block. S24: Press the external control to drive the servo motor to rotate the knitting needle along its rotation direction to the predetermined position of the lower triangular block needle rail of the same type in the next path. The predetermined position of the lower triangular block needle rail is the same as the predetermined position of the sample lower triangular block needle rail. Adjust the relative position between the lower triangular block and the lower triangular seat of this path so that the indicator of the measuring instrument stops at the reference position, and complete the precise adjustment of the position of the lower triangular block of this path. Repeat this process until the precise adjustment of the position of all lower triangular blocks of this type is completed. S25: Then move the needle to the predetermined position of the lower triangle block needle rail of another aforementioned sample, and repeat step S24 until the precise adjustment of the position of all lower triangle blocks of all specified types is completed; Then, detach the machine adjustment device from the upper needle plate and install the upper triangular seats of each upper triangular block, which have been adjusted to their positions, onto the center to complete the machine adjustment operation. It should be noted that the order in which the upper triangular blocks of all channels and the lower triangular blocks of all channels are adjusted can be reversed.

[0010] The machine adjustment system and method provided by this invention, by using a servo motor to replace the original manual crank, ensures that the upper needle plate and lower needle cylinder can accurately stop at the corresponding triangular block position to be adjusted. Furthermore, it innovatively adopts the method of first determining the sample triangular block and then finely adjusting it by dial gauge, and then using the finely adjusted sample triangular block as the measurement benchmark to adjust subsequent triangular blocks of the same type, which greatly improves the speed and efficiency of machine adjustment. Attached Figure Description

[0011] The specific description given as a non-limiting example better explains what the invention includes and how it can be practiced. Furthermore, this description refers to the accompanying drawings, in which: Figure 1 A three-dimensional view of a circular knitting machine; Figure 2 and 3 This is a cross-sectional view of the circular knitting machine of the present invention; Figure 4 This is a schematic diagram illustrating the adjustment of the upper triangular block position on the circular knitting machine of the present invention; Figure 5 This is a schematic diagram illustrating the adjustment of the lower triangular block position on the circular knitting machine according to the present invention; Figure 6 This is a top view of the circular knitting machine of the present invention after the upper triangular supports have been removed. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings and a specific embodiment.

[0013] A specific embodiment of the present invention provides a circular knitting machine adjustment system, including a circular knitting machine and an adjustment device; See Figure 2 and 3 The circular knitting machine includes a controller, a bead tray R, an upper needle tray P, a lower needle cylinder Q, a transmission device U, a servo motor T, external controls for triggering the servo motor T to perform step-by-step start, and control commands for controlling the servo motor T to perform machine adjustment operations. The upper needle tray P is located on the upper side of the bead tray, and the lower needle cylinder is located circumferentially on the bead tray Q. The servo motor T drives the upper needle tray P and the lower needle cylinder Q to rotate synchronously through the transmission device U (such as through belt drive or chain drive). The control commands are stored in the controller of the circular knitting machine, which is electrically connected to the servo motor T. When the control command is executed by the controller, the controller transmits an electrical signal to the servo motor T to control the servo motor T to perform machine adjustment operations. That is, whenever the machine adjustment personnel trigger the external controls, the controller controls the servo motor T to drive the upper needle tray P and the lower needle cylinder Q to rotate by a preset angle.

[0014] The external control is a control button set on the control panel of the circular knitting machine. The operator manipulates the control button to send a step-start command to the servo motor T. In other embodiments of the invention, a wireless transmission module can be added to the circular knitting machine. This wireless transmission module communicates with an external terminal, which acts as an external control (e.g., controlled by installing a specific APP or mini-program on a mobile terminal). The operator uses this external terminal to send a step-start command to the servo motor T.

[0015] The difference between this embodiment of the circular knitting machine and existing circular knitting machines lies in replacing the drive motor used to synchronously rotate the upper needle plate and the lower needle cylinder with a servo motor. Additionally, the aforementioned external controls and control commands are added. The servo motor differs from a conventional motor in that, under the control of the controller, it can drive the upper needle plate and the lower needle cylinder to rotate a precise angle each time.

[0016] The machine adjustment device includes a base 1 and a measuring instrument 2, which is fixed to the base 1. The structure and principle of the measuring instrument 2 can be referenced from a dial indicator, which includes an indicating head 21 and a floating rod 22. The indicating head 21 is used to indicate the position of the floating rod 22 to the machine adjustment personnel. The accuracy of the measuring instrument 2 should not be too low; the specific accuracy level of the measuring instrument used can be determined by the technicians based on the actual machine adjustment accuracy requirements. See also... Figure 4 When adjusting the position of the upper triangular block X1, the base 1 is magnetically fixed to the lower needle cylinder Q, and the floating top rod 22 directly abuts against the knitting needle in the needle groove of the upper needle plate P, moving as the knitting needle floats in the needle groove of the upper needle plate P; see also Figure 5 When adjusting the position of the lower triangular block Y1, the base 1 is magnetically fixed to the upper needle plate P, and the floating top rod 22 directly abuts against the knitting needle in the needle groove of the lower needle cylinder Q, moving as the knitting needle floats in the needle groove of the lower needle cylinder Q. A magnet can be provided on the base 1 to allow it to be magnetically connected to the upper needle plate P and the lower needle cylinder Q. The specifications of the magnet need to be selected based on the firmness of the base 1's attachment to the upper needle plate P and the lower needle cylinder Q; the base 1 should not be able to move easily relative to the upper needle plate P or the lower needle cylinder Q. In other embodiments of the invention, the connection between the base and the lower needle cylinder and the upper needle plate can also be other detachable connection methods, such as a screw connection. If the end face area of ​​the floating top rod used to abut against the knitting needle is indeed relatively small and it is difficult to align this end face with the knitting needle, the floating top rod can also indirectly abut against the knitting needle, for example, by fixing a sheet or block for the knitting needle to abut against on the floating top rod.

[0017] The adjustment method applied to the above-mentioned circular knitting machine adjustment system is described below.

[0018] This adjustment method includes upper and lower triangular block adjustment steps. You can adjust each upper triangular block X1 first, or each lower triangular block Y1 first. Adjustment of upper triangular block X1 must be performed after all lower triangular blocks Y1 and the lower triangular block Y1 have been completely removed (see [link]). Figure 4 After adjustment, reinstall the lower triangular block Y1 back into each lower triangular bracket Y; adjustment of the lower triangular block Y1 must be performed after the upper triangular block X1 and the upper triangular bracket X have been completely removed (see...). Figure 5 and 6 After adjustment, reinstall the upper triangular block X1 back into each upper triangular bracket X. See also Figure 6Taking the lower triangular block Y1 as an example, a circular knitting machine has dozens of lower triangular seats Y in one revolution, and each lower triangular seat Y has several lower triangular blocks Y1. When the lower needle cylinder Q rotates once, the needle in a certain needle groove of the lower needle cylinder Q passes through the needle track of dozens of lower triangular blocks Y1 in one revolution. In this process, the needle will pass through different types of lower triangular blocks Y1 in sequence. For example, there are two types of lower triangular blocks Y1: α and β. There are n lower triangular blocks of type α, namely α1, α2, ..., and there are n lower triangular blocks of type β, namely β1, β2, ..., and the needle passes through lower triangular blocks α1, β1, α2, β2, ... in sequence.

[0019] The steps for adjusting the upper triangular block include: At this point, the circular knitting machine is in a state where the lower triangular block Y1 is completely removed along with the lower triangular seat Y, while the upper triangular block X1 is completely installed on the center F along with the upper triangular seat X. What needs to be adjusted is the position of each upper triangular block X1 relative to its respective upper triangular seat X.

[0020] S11: The machine operator makes a preliminary adjustment to the relative position between each upper triangular block X1 and the upper triangular seat X. The precision of the preliminary adjustment is lower than that of the subsequent precise adjustment. However, for one or several types of upper triangular blocks, the precision requirements can be met, and no further precise adjustment is needed. S12: The machine operator selects the type a, b, etc. of the upper triangular block to be precisely adjusted. For each type of upper triangular block that needs to be precisely adjusted, one of the n samples is selected as the sample upper triangular block. The relative position between each sample upper triangular block a1, b1, etc. (corresponding to each type of upper triangular block, serving as the reference for subsequent precise adjustment of that type of upper triangular block) and the corresponding upper triangular seat is precisely adjusted. S13: The machine operator inserts a knitting needle into a needle slot of the upper needle plate P, so that the needle foot of the knitting needle is located at a certain position in the needle rail of a certain sample upper triangular block a1 (for looped triangular blocks, the peak position of the needle rail is usually selected). At this time, the positions of each upper triangular block a2 to an of the same type as the sample upper triangular block a1 need to be precisely adjusted. Fix the base 1 of the machine adjustment device to the outer wall of the lower needle cylinder Q, so that the floating top rod 22 of the measuring instrument 2 directly touches the top of the knitting needle, and mark the position indicated by the indicator head 21 on the measuring instrument 2 as the reference position of the triangular block a1 on the sample; in order to facilitate subsequent observation, after the floating top rod 22 touches the knitting needle, adjust the zero point position of the indicator head 21 so that the reference position of the triangular block a1 on the sample corresponds to the zero point position of the indicator head 21. S14: The operator presses the external control to trigger the servo motor T to rotate by a preset angle (this angle is determined according to the actual arrangement of the upper triangular block X). This causes the knitting needle to rotate with the upper needle plate P to the next upper triangular block a2 of this type. At this time, the position of the knitting needle foot in the needle rail of the upper triangular block a2 is the same as its previous position in the needle rail of the upper triangular block a1 (for example, if the needle foot was previously at 1 / 2 of the needle rail of the upper triangular block a1, it is now at 1 / 2 of the needle rail of the upper triangular block a2). Adjusting the position of the upper triangular block a2 relative to its upper triangular block, the needle foot is limited by the needle rail, causing the knitting needle to move in the needle groove as the upper triangular block a2 moves, eventually causing the indicator of the measuring instrument to indicate the zero point, completing the precise adjustment of the position of the upper triangular block a2. Repeat this process until the precise positions of all other upper triangle blocks of this type are adjusted. S15: Move the knitting needle and adjustment device to the upper triangular block b1 of another sample, adjust the zero point position of the indicator head 21, execute step S14, and complete the precise adjustment of the positions of all other upper triangular blocks b2 to bn of this type. Repeat this process until the precise adjustment of the position of all the upper triangle blocks X1 that require precise adjustment is completed.

[0021] The steps for adjusting the lower triangular block include: At this point, the circular knitting machine is in a state where the upper triangular block X1 is completely removed along with the upper triangular seat X, while the lower triangular block Y1 is completely installed on the saddle G along with the lower triangular seat Y. What needs to be adjusted is the position of each lower triangular block Y1 relative to its respective lower triangular seat Y.

[0022] S21: The machine operator makes a preliminary adjustment to the relative position between each lower triangular block Y1 and each lower triangular seat Y. The precision of the preliminary adjustment is lower than that of the subsequent precise adjustment. However, for one or several types of lower triangular blocks, the precision requirements can be met, and no further precise adjustment is needed. S22: The machine operator selects the type of lower triangular block α, β, etc. that needs to be precisely adjusted. For each type of lower triangular block that needs to be precisely adjusted, one of them is selected as a sample lower triangular block. The relative position between each sample lower triangular block α1, β1, etc. (corresponding to each type of lower triangular block, serving as the benchmark for subsequent precise adjustment of that type of lower triangular block) and the corresponding lower triangular seat is precisely adjusted. S23: The machine operator inserts a knitting needle into a needle slot of the lower needle cylinder Q, so that the needle foot of the knitting needle is located at a certain position in the needle rail of a certain sample lower triangle block α1. At this time, the position of each upper triangle block α2 to αn of the same type as the sample lower triangle block α1 must be precisely adjusted. Fix the base 1 of a machine adjustment device to the top end face of the upper needle plate P, so that the floating top rod 22 of the measuring instrument 2 directly abuts against the top of the knitting needle, and mark the position indicated by the indicator head 21 on the measuring instrument 2 as the reference position of the lower triangular block α1 of the sample; in order to facilitate subsequent observation, after the floating top rod 22 just abuts against the knitting needle, adjust the zero point position of the indicator head 21 so that the reference position of the lower triangular block α1 of the sample corresponds to the zero point position of the indicator head 21. S24: The operator presses the external control to trigger the servo motor T to rotate by a preset angle (this angle is determined according to the actual arrangement of the lower triangular block Y). This causes the knitting needle to rotate with the lower needle cylinder Q to the next lower triangular block α2 of this type. At this time, the position of the knitting needle foot in the needle rail of the lower triangular block α2 is the same as its previous position in the needle rail of the lower triangular block α1 (for example, the needle foot was previously at 1 / 2 of the needle rail of the lower triangular block α1, and now it is at 1 / 2 of the needle rail of the lower triangular block α2). Adjusting the position of the lower triangular block α2 relative to its lower triangular block, the needle foot is limited by the needle rail, causing the knitting needle to move in the needle groove with the movement of the lower triangular block α2, and finally the indicator of the measuring instrument is indicated at the zero point, completing the precise adjustment of the position of the lower triangular block α2 of this type. Repeat this process until the precise positions of all other lower triangular blocks of this type are adjusted. S25: Move the knitting needle and adjustment device to another sample lower triangle block β1, adjust the zero point position of the indicator head 21, execute step S14, and complete the precise adjustment of the positions of all other lower triangle blocks β2 to βn of this type. Repeat this process until the precise adjustment of the Y1 position of all lower triangular blocks that require precise adjustment is completed.

[0023] Preferably, when selecting sample triangles, it is best to select the first-path triangle of this type. The first-path triangle is defined as the triangle adjacent to the needle gate triangle along the rotation direction. There are no other triangles of this type between the first-path triangle and the last-path triangle of this type along the rotation direction. This way, when designing control commands for controlling the servo motor to perform adjustment operations, it is generally not necessary to consider the issue of crossing the needle gate. It can be directly designed so that each press of the external control causes the servo motor to rotate by a fixed angle, because generally, except for the triangle at the needle gate, the width of each triangle (i.e., the dimension along the rotation direction of the upper needle plate / lower needle cylinder) is the same (see...). Figure 6 Except for the lower triangular seat Y at the needle gate, whose angular interval with its adjacent lower triangular seat Y is N / 2, the angular interval between adjacent lower triangular seats Y is M. The needle gate is generally a floating triangular block, which is adjusted together with other triangular blocks of the same type.

[0024] Preferably, in order to improve the efficiency of machine adjustment, multiple machine adjustment devices and multiple knitting needles can be prepared to achieve parallel adjustment of multiple types of triangle blocks. Taking two machine adjustment devices and two knitting needles as an example, when adjusting the upper triangle block, two different types of looping upper triangle blocks can be selected for simultaneous adjustment, or the looping upper triangle block and the emerging upper triangle block can be selected for simultaneous adjustment respectively.

[0025] It should be noted that the "same type of triangle block" mentioned above does not refer to a broad category of triangle blocks, such as loop triangle blocks or floating triangle blocks. Rather, it refers to two triangle blocks that have the same needle rail shape and are defined as being of the same type, such as loop triangle blocks with the same needle rail shape or floating triangle blocks with the same needle rail height. If the needle rail shapes of loop triangle blocks are different, they are defined as being of different types. At the same time, it is necessary to specify which different types of triangle blocks need to be precisely adjusted according to the requirements of the woven fabric. If necessary, all triangle blocks can be precisely adjusted using the aforementioned machine adjustment device and method.

[0026] The above embodiments and illustrations are not intended to limit the product form and style of the present invention. Any appropriate changes and modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A circular knitting machine setting system, characterized by: The circular weft machine and the adjusting device; The circular weft machine comprises at least a servo motor, an external control for driving the servo motor to start step by step, a controller for driving the servo motor to perform the adjusting operation, and a transmission device for connecting with the output shaft of the servo motor; the servo motor serves as the power source of the transmission device, and drives the upper needle disc and the lower needle cylinder to rotate synchronously under control through the transmission device; the controller is used to execute the preset control instruction, so that the servo motor drives the upper needle disc and the lower needle cylinder to deflect by a preset angle when performing the adjusting operation; The adjusting device comprises a seat body and a measuring instrument, the measuring instrument is fixed on the seat body, the measuring instrument comprises an indicating meter head and a floating top rod, the indicating meter head is used to indicate the position of the floating top rod to the adjusting personnel; when adjusting the position of the upper triangular block, the seat body is detachably fixedly connected with the lower needle cylinder, and the floating top rod directly or indirectly abuts against the needle in the needle groove of the upper needle disc; when adjusting the position of the lower triangular block, the seat body is detachably fixedly connected with the upper needle disc, and the floating top rod directly or indirectly abuts against the needle in the needle groove of the lower needle cylinder.

2. The circular weft knitting machine setting system of claim 1, wherein: The measuring instrument is a dial gauge or a micrometer, and the dial gauge and the micrometer are mechanical or digital.

3. The circular knitting machine setting system of claim 1, wherein: A magnet is arranged on the seat body to be fixedly connected with the upper needle disc or the lower needle cylinder by magnetic attraction.

4. The circular knitting machine setting system of claim 1, wherein: The external control is a control button arranged on the control console of the circular weft machine, and the control button is used to issue a step starting instruction to the servo motor; or a wireless transmission module and an external terminal are additionally arranged on the circular weft machine, the wireless transmission module is in data connection with the external terminal, and the external terminal is used to issue a step starting instruction to the servo motor.

5. A method of setting a circular weft knitting machine, characterized in that, The adjusting method is applied to the circular weft machine adjusting system as claimed in any one of claims 1 to 4, and the adjusting method comprises: Upper triangular block adjusting step: S11: each lower triangular seat is not mounted on the saddle, each upper triangular seat with the upper triangular blocks is mounted on the middle needle, and the relative positions between each upper triangular block and each upper triangular seat are preliminarily adjusted by the adjusting master; S12: the adjusting master selects the type of the upper triangular block to be precisely adjusted, selects one of each type of the upper triangular block as a sample upper triangular block, and precisely adjusts the relative positions between each sample upper triangular block and the corresponding upper triangular seat; S13: one needle is inserted into the upper needle disc and the needle stitch is located at the predetermined position of the needle rail of one of the aforementioned sample upper triangular blocks, the seat body of one adjusting device is fixed on the outer wall of the lower needle cylinder, the floating top rod of the measuring instrument directly or indirectly abuts against the top end of the needle, and the position indicated by the indicating meter head of the measuring instrument is marked as the reference position of the sample upper triangular block; S14: the external control is pressed to drive the servo motor to drive the needle to rotate to the predetermined position of the needle rail of the next upper triangular block of the same type in the rotating direction of the needle, the predetermined position of the needle rail of the upper triangular block is the same as the predetermined position of the needle rail of the sample upper triangular block, the relative positions between the upper triangular block and the upper triangular seat are adjusted, the indicating meter head of the measuring instrument stays at the reference position, and the precise adjustment of the position of the upper triangular block is completed; the above steps are repeated until the precise adjustment of the positions of all the upper triangular blocks of the type is completed. S15: Then the needle is moved to another predetermined position of the aforementioned sample upper cam track, and the step S14 is repeated until the precise adjustment of all the upper cam positions of the specified type is completed. After the precise adjustment of all the upper cams is completed, the upper cam seats are detached from the middle shaft, and the lower cam seats are installed on the saddle, and the lower cam adjustment step is started. S21: The relative positions between the lower cams and the lower cam seats are preliminarily adjusted by the mechanic. S22: The mechanic selects the type of the lower cam to be precisely adjusted, and selects one of each type of the lower cam as a sample lower cam, and precisely adjusts the relative positions between the sample lower cams and the corresponding lower cam seats. S23: A needle is inserted into the lower needle cylinder and the needle is located at a predetermined position of one of the aforementioned sample lower cam tracks, a seat body of the adjusting device is fixed on the top end face of the upper needle plate, the floating top rod of the measuring instrument directly or indirectly abuts against the top end of the needle, and the position indicated by the indicator head of the measuring instrument is marked as the reference position of the sample lower cam. S24: The external control is pressed to drive the servo motor to rotate the needle to the next predetermined position of the same type of the lower cam track, the position is the same as the predetermined position of the sample lower cam track, the relative positions between the lower cam and the lower cam seat are adjusted, the indicator head of the measuring instrument is kept at the reference position, and the precise adjustment of the lower cam position is completed; the above steps are repeated until the precise adjustment of all the lower cam positions of the specified type is completed. S25: Then the needle is moved to another predetermined position of the aforementioned sample lower cam track, and the step S24 is repeated until the precise adjustment of all the lower cam positions of the specified type is completed. Then the adjusting device is detached from the upper needle plate, the upper cam seats with the adjusted upper cams are installed on the middle shaft, and the adjusting work is completed. It is to be noted that the sequence of the upper cam and the lower cam position adjustment can be reversed.

6. The circular weft knitting machine setting method according to claim 5, characterized in that, The number of the needles is N, and N is greater than or equal to 2, each needle is respectively relative to the predetermined position of the sample upper cam of different type or the predetermined position of the sample lower cam of different type, and the number of the adjusting device is consistent with the number of the needle.

7. The circular weft knitting machine setting method according to claim 5, characterized in that, When the sample upper cam is a loop sample upper cam, the predetermined position of the sample upper cam is the peak position, and the needle can be extended to the farthest end relative to the upper needle plate; when the sample lower cam is a loop sample lower cam, the predetermined position of the sample lower cam is the peak position, and the needle can be extended to the farthest end relative to the lower needle cylinder.

8. The circular weft knitting machine setting method according to claim 5, characterized in that, When the needle is placed in the predetermined position of the sample upper cam and the sample lower cam, the floating top rod of the measuring instrument directly or indirectly abuts against the top end of the needle, the relative position between the floating top rod of the measuring instrument and the needle is adjusted, and then the position indicated by the indicator head of the measuring instrument is marked as the reference position of the sample upper cam and the sample lower cam.

9. The circular weft knitting machine set-up method of claim 5, wherein, The sample upper triangular blocks are selected from the needle gate position and a first set of upper triangular blocks adjacent to the needle gate position in the direction of rotation. The sample lower triangular blocks are selected from the needle gate position and a first set of lower triangular blocks adjacent to the needle gate position in the direction of rotation.

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