Up-down loop-shifting thread-adjusting needle latch opening method by changing four paths into five paths

Abstract

The invention relates to the technical field of circular knitting machines, in particular to a four-way-to-five-way loop-up and loop-down adjusting and needle latch opening method, which specifically comprises the following steps: S1, providing a circular knitting machine which comprises a needle cylinder and a needle dial, and S2, changing the needle cylinder into the five-way loop-up and loop-down adjusting and needle latch opening method into the four-way loop-up and loop-down adjusting and needle latch opening method into the five-way loop-up and loop-down adjusting and needle latch opening method, s2, setting an original four-way one-group knitting system; s3, identifying in an original four-path one-group system; s4, changing an original four-path one-group system into a five-path one-group system; s5, a special upper and lower needle latch opening device is arranged at the position of the fifth path; and S6, setting the system with five paths as one group. According to the scheme, an original four-way one-group knitting system is changed into a five-way one-group system, and the fifth way is specially arranged for opening the upper needle latch and the lower needle latch after loop transfer, so that thread adjustment, loop transfer and needle latch opening actions are clearly divided in each way, and the problem that a needle latch opener is difficult to operate due to interference of a thread adjustment function in the original four-way system is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circular knitting machines, in particular to a method for opening the needle tongue through four-to-five up-and-down transfer. BACKGROUND

[0002] In the field of circular knitting machines, up-and-down transfer is a common jacquard knitting technology widely used in the production of high-value-added knitted products. In the prior art, a four-in-one knitting structure is usually used, which includes needle cylinder transfer, needle disc transfer and corresponding needle tongue opening devices.

[0003] In the traditional method, the opening of the needle tongue relies on the installation of mechanical auxiliary devices such as magnetic hooks or steel sheets on the jacquard path to achieve the opening of the needle tongue. However, this method has obvious complexity in operation: after installing the line, the layout of the needle tongue opening device is crowded, the debugging is difficult, and the technical requirements for the machine operator and maintenance personnel are high, which not only affects the production efficiency, but also limits the improvement of the machine running speed. Especially in the production scene of multi-color and high-frequency line, the existing structure is difficult to balance stability and operational convenience. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned shortcomings in the prior art, and to provide a method for opening the needle tongue through four-to-five up-and-down transfer. The method for opening the needle tongue through four-to-five up-and-down transfer is as follows: S1, providing a circular knitting machine, including a needle cylinder and a needle disc, the needle cylinder is provided with needle cylinder needles, the needle disc is provided with needle disc needles, the needle cylinder and the needle disc cooperate to complete rib knitting and transfer action; S2, setting the original four-in-one knitting system, wherein the first path and the second path correspond to the knitting of the first rib and the second rib respectively, the third path is used for the transfer of the needle cylinder to the needle disc, and the fourth path is used for the transfer of the needle disc to the needle cylinder, and the needle tongue opener is arranged at the positions of the first path and the second path; S3, identifying that in the original four-in-one system, due to the addition of the line function, the operation of the needle tongue opener is difficult, which affects the machine running efficiency and operational convenience; S4, changing the original four-in-one system to a five-in-one system, wherein the fifth path is specially used for up-and-down needle tongue opening operation after transfer; S5, setting a special up-and-down needle tongue opening device at the position of the fifth path, the device includes a mechanical structure or an electromagnetic driving component for pushing the needle tongue to open, ensuring that the up-and-down needle tongue can be automatically or semi-automatically opened after the transfer is completed; S6, through the setting of the above-mentioned five-in-one system, the line, transfer and needle tongue opening operations are clearly divided in each path, reducing the operation difficulty, improving the machine running speed and production efficiency, and facilitating the operation and maintenance of the machine operator and maintenance personnel; The first path and the second path are still used for knitting the first and second rib, the third path and the fourth path are respectively used for moving the needle cylinder to the needle disc and moving the needle disc to the needle cylinder, and the fifth path is used for opening the needle tongue. The setting of the needle tongue opening device in the fifth path greatly reduces the difficulty of installation and adjustment of the needle tongue opener in the original four paths, and avoids the problems of needle tongue opening failure or machine jam caused by the interference of the thread adjusting device.

[0005] Preferably, in the five-path group structure, each path is provided with an independent needle selector and a cam control mechanism, and the cam structure of the fifth path is specially designed to drive only the needle tongue opener without participating in the knitting action.

[0006] Preferably, the needle tongue opener includes opening components acting on the needle cylinder needle and the needle disc needle respectively.

[0007] Preferably, the up-and-down needle tongue opening device in the fifth path includes a magnetic component or a mechanical push piece structure.

[0008] Preferably, in the fifth path, the timing of the needle tongue opening is synchronously controlled with the actions of the previous four paths, and the signal coordination and timing management are performed by a unified main control system.

[0009] Preferably, the needle tongue opener configured in the first path and the second path is of a switchable structure.

[0010] Preferably, after the stitch transfer action of the fourth path is completed, a needle tongue state detection sensor is installed before the knitting needle enters the fifth path.

[0011] Preferably, the fifth path needle tongue opening device can adjust the opening force and the action stroke according to the type of the knitting needle and the characteristics of the yarn.

[0012] Preferably, the five-path group structure can be expanded into multiple groups arranged in cycles, each group is independently controlled, and together constitutes a needle tongue control system of a circular knitting machine.

[0013] Preferably, the module further includes a needle tongue state monitoring and feedback module connected with the main control system, which collects the execution data of the fifth path needle tongue opening device and the feedback signal of the needle tongue state sensor in real time, and judges whether the needle tongue opening is successful through an algorithm, if the opening fails or is abnormal, the system automatically alarms and records the fault position, supports remote diagnosis and parameter adjustment.

[0014] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: The design scheme provided by the application has the following beneficial effects in the application process: 1. The original four-way one-group knitting system is changed to a five-way one-group system, and the fifth way is specially set for the opening operation of the upper and lower needle tongue after the loop transfer, so that the thread adjusting, loop transfer and needle tongue opening actions are clearly divided in each way. This design avoids the problem of difficult operation of the needle tongue opener caused by the interference of the thread adjusting function in the original four-way system, reduces the machine jamming and opening failure, and makes the machine run more smoothly. The operator can easily perform daily operation and maintenance, and the overall production efficiency is improved; 2. As described in 1, the fifth way uses a specially designed triangular structure that only drives the needle tongue opener and does not participate in the knitting action. Through independent control, it ensures that the tongue opening action does not conflict with the knitting or loop transfer action. At the same time, the needle tongue opening device includes mechanical structures suitable for needle cylinder and needle disc knitting needles, such as inclined surface push piece and elastic top rod, which improves the success rate of needle tongue opening. Unified timing control and sensor detection further ensure that the action is performed at the correct time. Only the knitting needle that needs to be opened enters the fifth way, thereby improving the reliability and response speed of the system; 3. As described in 2, the needle tongue opening device can adjust the opening force and action stroke according to the type of knitting needle and the characteristics of the yarn. Flexible operation is achieved through adjustment of the electromagnet current or mechanical limit, which prevents needle tongue damage or opening failure. The needle tongue openers in the first and second ways are switchable structures that facilitate quick switching between ordinary knitting and thread adjusting and loop transfer modes. In addition, the five-way one-group structure can be expanded to multiple groups in a circular arrangement to achieve high-speed continuous production, adapt to diverse production needs, and ultimately improve overall knitting efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 The original 4-way schematic diagram of the present application; Fig. 2 The improved existing 5-way schematic diagram of the present application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all.

[0017] Embodiment One Referring to Figs. 1-2 A four-way to five-way up and down loop transfer thread adjusting needle tongue opening method, which is as follows: S1, providing a circular knitting machine, including a needle cylinder and a needle disc, the needle cylinder is provided with needle cylinder knitting needles, and the needle disc is provided with needle disc knitting needles, the needle cylinder and the needle disc cooperate to complete rib knitting and loop transfer action; S2, set the original four-way one-group knitting system, wherein the first and second paths correspond to the knitting of the first and second stitches, the third path is used for transferring stitches from the needle cylinder to the needle plate, and the fourth path is used for transferring stitches from the needle plate to the needle cylinder, and a needle latch opener is arranged at the positions of the first and second paths; S3, identify that in the original four-way one-group system, the addition of the thread adjusting function causes the needle latch opener to be difficult to operate, affecting the machine running efficiency and operation convenience; S4, change the original four-way one-group system to a five-way one-group system, wherein the fifth path is specially used for opening the upper and lower needle latches after transferring stitches; S5, a special upper and lower needle latch opening device is arranged at the position of the fifth path, which includes a mechanical structure or an electromagnetic driving assembly for pushing the needle latches to open, ensuring that the upper and lower needle latches can be automatically or semi-automatically opened after transferring stitches; S6, through the above-mentioned five-way one-group system, the thread adjusting, stitch transferring and needle latch opening operations are clearly divided in each path, reducing the operation difficulty, improving the machine running speed and production efficiency, and facilitating the operation and maintenance of the machine operator and maintenance personnel; In the five-way one-group system, the first and second paths are still used for knitting the first and second stitches, the third and fourth paths are respectively used for transferring stitches from the needle cylinder to the needle plate and transferring stitches from the needle plate to the needle cylinder, and the fifth path is specially used for opening the needle latches. The setting of the needle latch opening device in the fifth path greatly reduces the difficulty of installing and adjusting the needle latch opener in the original four-way system, and avoids the failure of opening the needle latches or the machine jamming caused by the interference of the thread adjusting device.

[0018] In the five-way one-group structure, each path is provided with an independent needle selector and a cam control mechanism, and the cam structure of the fifth path is specially designed to only drive the needle latch opener without participating in the knitting action. Through independent cam control, the fifth path can accurately perform the opening action, avoid conflicts with knitting or stitch transferring actions, and improve the system stability and response speed.

[0019] The needle latch opener includes opening assemblies acting on the needle cylinder needles and the needle plate needles respectively. The needle cylinder needle opening assembly adopts a bevel push piece structure, and the needle plate needle opening assembly adopts an elastic jack design, which can adapt to the needle bed motion trajectory and tongue piece state of different needles respectively, and improve the opening success rate.

[0020] The fifth path upper and lower needle latch opening device includes a magnetic assembly or a mechanical push piece structure. The magnetic assembly is driven by an electromagnet, which is fast in response and accurate in control. The mechanical push piece structure is pushed by a cam, which is simple in structure and strong in durability, and can be selected and configured according to actual production needs.

[0021] Among them, in the fifth path, the timing of the latch opening is synchronized with the first four paths, and the signal coordination and timing management are performed by a unified main control system. The main control system receives the encoder signal to ensure that the latch opening action is accurately performed after the transfer is completed and before the next knitting cycle starts, avoiding misoperation.

[0022] Among them, the needle latch opener in the first and second paths is a switchable structure, which realizes the switching in and out of the opener by pneumatic or electric means, facilitating quick switching between ordinary knitting and thread transfer mode, and improving the adaptability of the equipment.

[0023] Among them, after the fourth path transfer action is completed, a needle latch state detection sensor is installed before the needle enters the fifth path. The sensor uses photoelectric or mechanical induction method to detect whether the needle latch is in the closed state, ensuring that only the needle that needs to be opened enters the fifth path, and improving the action reliability.

[0024] Among them, the fifth path needle latch opening device can adjust the opening force and action stroke according to the type of knitting needle and the characteristics of yarn, and realize the adaptability to different knitting needles and yarns by adjusting the electromagnetic current or mechanical limit screw, to prevent damage to the needle latch due to excessive force or failure to open due to insufficient force.

[0025] Among them, the five-path structure can be expanded to multiple groups of circular arrangement, each group is independently controlled, and together constitutes the needle latch control system of the circular knitting machine. The multiple group structure is evenly distributed along the circumference of the needle cylinder, and the fifth path of each group is used for opening the latch to realize high-speed continuous production and improve the overall knitting efficiency and quality.

[0026] Among them, it also includes a needle latch state monitoring and feedback module connected with the main control system. The module collects the execution data of the fifth path needle latch opening device and the feedback signal of the needle latch state sensor in real time, and judges whether the needle latch opening is successful through algorithm. If it detects that the opening fails or is abnormal, the system automatically alarms and records the fault position, supports remote diagnosis and parameter adjustment.

[0027] In specific implementation The first and second paths of the present scheme are responsible for the knitting of the first and second rib respectively, maintaining the stability of the basic knitting function; the third and fourth paths are responsible for the transfer operation, among which the third path handles the transfer of the needle cylinder to the needle disc, and the fourth path handles the transfer of the needle disc to the needle cylinder, ensuring the accuracy of yarn transfer; the newly added fifth path is completely independent of the knitting and transfer action, and is used for opening the upper and lower needle latches. The fifth needle tongue opening device adopts a multi-element driving mechanism and an intelligent control strategy to ensure the reliability and adaptability of the action. The device can be configured with a magnetic component or a mechanical push piece structure. The magnetic scheme uses an electromagnet for driving, which has the characteristics of fast response and precise control. The mechanical scheme emphasizes durability and simplicity by using a cam to push. The timing of the opening action is coordinated by a unified main control system, which receives encoder signals to ensure that the fifth operation is executed after the completion of the transfer and before the start of the next knitting cycle, preventing misoperation.

[0028] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application according to the technical solutions and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A method of changing the needle tongue by four-way to five-way up and down loop transfer, characterized in that: The method for opening the needle tongue through the up-and-down transfer of the four-to-five system is as follows: S1. A circular knitting machine is provided, comprising a needle cylinder and a needle disc, the needle cylinder being provided with needle cylinder needles, and the needle disc being provided with needle disc needles, the needle cylinder and the needle disc cooperating to complete rib knitting and transfer actions; S2. The original four-in-one system is set, wherein the first and second paths correspond to the knitting of the first and second ribs respectively, the third path is used for the transfer of the needle cylinder to the needle disc, and the fourth path is used for the transfer of the needle disc to the needle cylinder, and a needle tongue opener is arranged at the positions of the first and second paths; S3. In the original four-in-one system, the addition of the thread adjusting function causes the needle tongue opener to be difficult to operate; S4. The original four-in-one system is changed to a five-in-one system, wherein the fifth path is specially used for the up-and-down opening of the needle tongue after the transfer; S5. A special up-and-down needle tongue opening device is arranged at the position of the fifth path, the device comprising a mechanical structure or an electromagnetic driving assembly for pushing the needle tongue to open, and the up-and-down needle tongue can be automatically or semi-automatically opened after the transfer is completed; S6. Through the arrangement of the above-mentioned five-in-one system, the thread adjusting, transfer and needle tongue opening operations are clearly divided among the paths. In the five-in-one system, the first and second paths are still used for the knitting of the first and second ribs, the third and fourth paths are used for the transfer of the needle cylinder to the needle disc and the transfer of the needle disc to the needle cylinder respectively, and the fifth path is specially used for opening the needle tongue.

2. A method of changing the direction of the needle movement by changing the direction of the movement of the ring in the four-way to five-way transfer according to claim 1, characterized in that: In the five-in-one structure, each path is provided with an independent needle selector and a cam control mechanism, and the cam structure of the fifth path is specially designed to only drive the needle tongue opener without participating in the knitting action.

3. A method of changing the direction of the needle movement by changing the direction of the movement of the ring in the four-way change five-way cast-on method according to claim 2, characterized in that: The needle tongue opener comprises opening assemblies acting on the needle cylinder needles and the needle disc needles respectively.

4. A method of changing the direction of the needle movement by changing the direction of the movement of the ring in the four-way to five-way transfer according to claim 3, characterized in that: The up-and-down needle tongue opening device of the fifth path comprises a magnetic assembly or a mechanical push piece structure.

5. A method of changing the direction of the needle movement by changing the direction of the cast-on loop according to claim 4, characterized in that: In the fifth path, the timing of the needle tongue opening is synchronously controlled with the actions of the previous four paths, and the unified main control system is used for signal coordination and timing management.

6. A method of changing the direction of the needle movement by changing the direction of the cast-on loop according to claim 5, characterized in that: The needle tongue openers arranged in the first and second paths are switchable structures.

7. A method of changing the direction of the needle movement by changing the direction of the cast-on loop according to claim 6, characterized in that: After the transfer action of the fourth path is completed, a needle tongue state detection sensor is installed before the needles enter the fifth path.

8. A method of changing the direction of the needle movement by changing the direction of the cast-on loop according to claim 7, characterized in that: The needle tongue opening device of the fifth path can adjust the opening force and the action stroke according to the type of the needles and the characteristics of the yarn.

9. A method of changing the direction of the needle movement by changing the direction of the cast-on loop according to claim 8, characterized in that: The five-in-one structure can be expanded into multiple groups of circular arrangements, each group being independently controlled to jointly constitute the needle tongue control system of the circular knitting machine.

10. A method of changing the direction of the needle movement by changing the direction of the loop transfer according to any one of claims 1 to 9, characterized in that: The module further comprises a needle tongue state monitoring and feedback module connected with the main control system, the module real-time collecting the execution data of the fifth path needle tongue opening device and the feedback signals of the needle tongue state sensor, and determining whether the needle tongue opening is successful through an algorithm, if the opening fails or is abnormal, the system automatically alarms and records the fault position, and supports remote diagnosis and parameter adjustment.

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