Electronic jacquard loom control system and its operation control method

Abstract

The application discloses an electronic jacquard loom control system, which comprises a loom control system, a jacquard independent drive control system, a starting system, a jacquard shedding control system and a jacquard shedding mechanism, wherein the starting system is connected with the jacquard independent drive control system, and the jacquard independent drive control system is connected with the loom control system. The operation starting signal of the control system is connected with the jacquard independent drive control system, and the loom control system starts the loom main shaft motor according to the control signal sent by the jacquard independent drive system. In the application, the advance operation of the jacquard motor provides a longer starting time for the jacquard to reach the synchronous speed of the loom, and when the loom starts, the jacquard motor has reached a certain speed, and from the speed, the motor is accelerated to the synchronous speed, and the output torque required for the motor to reach the synchronous speed from the static state is smaller, so that the configuration power of the motor can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of electronic jacquard loom technology, and relates to a control system for an electronic jacquard loom. Background Technology

[0002] Currently, the control scheme for electronic jacquard machines uses an asynchronous motor frequency conversion system, a servo motor system, and a switched reluctance motor control system to independently drive the jacquard machine spindle, replacing the traditional transmission mode where the jacquard machine spindle is connected to the loom spindle via a commutator and drive shaft. Related technical means can be found in the description of a Chinese invention patent (Publication No.: CN 103306000A).

[0003] like Figure 1 The diagram shown is a system architecture diagram of an existing electronic jacquard loom control system. After the loom starts, the signal is transmitted to the jacquard machine drive control system via the loom drive encoder, and then the jacquard machine drive control system controls the operation of the jacquard machine motor. The control method is as follows:

[0004] The jacquard machine drive control system samples the encoder signal of the loom drive and calculates the speed of the drive motor to achieve synchronous operation between the jacquard machine and the loom.

[0005] Since looms typically start in the heald-flat position, to obtain a larger starting weft insertion force, the loom spindle usually uses a delta connection of an AC asynchronous motor or other motors for rapid start control. This results in a large starting acceleration. At this point, the jacquard loom moves from the heald-flat position to the sheath position, a process of gradually increasing load. Furthermore, because the servo drive or frequency converter drives the motor from standstill to rated speed, the motor requires a large output torque. Under high-speed or heavy-load conditions, the jacquard loom drive motor often cannot accurately and quickly track the loom spindle speed, causing the jacquard loom and the loom spindle to lose synchronization, leading to failed weft insertion at start-up. To avoid this, equipment generally uses increased motor power to improve starting torque. Under heavy load and high speed conditions, the acceleration torque required is several times greater than that needed for normal operation. However, once the system is running normally, the motor output torque decreases significantly, thus increasing equipment costs. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention aims to provide an electronic jacquard loom control system and its operation control method, so that the jacquard loom drive motor can overcome the large starting acceleration torque required during rapid acceleration, start smoothly and synchronize with the speed of the loom spindle, and avoid losing synchronization.

[0007] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, the present invention is implemented through the following technical solution:

[0008] An electronic jacquard loom control system includes a loom control system, a jacquard loom independent drive control system, and a starting system. The loom control system controls the loom spindle drive motor, the jacquard loom independent drive control system controls the jacquard loom drive motor, the starting system controls the jacquard loom independent drive control system, and the jacquard loom independent drive control system controls the loom control system. The starting system sends a system start signal to the jacquard loom independent drive control system, which preprocesses the system start signal before sending it to the loom control system.

[0009] Another objective of this invention is to provide an operation control method for an electronic jacquard loom control system, which includes the following steps:

[0010] 1) After the start control signal button of the start system is pressed, the independent drive control system of the jacquard machine receives the start signal;

[0011] 2) The independent drive control system of the jacquard machine starts the machine motor at a certain speed;

[0012] 3) When the jacquard machine motor reaches the set position or speed, the jacquard machine independent drive control system sends a start signal to the loom control system. After receiving the start signal, the loom control system drives the loom spindle to move.

[0013] 4) After the loom spindle starts running, the jacquard machine independent drive control system collects the speed signal of the loom spindle and then performs synchronous operation control of the jacquard machine and the loom.

[0014] Since the independent drive motor of the jacquard machine has already started at a low speed, rotated through a certain angle, and reached a certain speed, the output acceleration torque during motor startup can be reduced. By collecting the signal from the encoder of the loom spindle, the speed of the independent drive motor of the jacquard machine is calculated, ensuring that the operation of the loom spindle and the shedding of the jacquard machine are synchronized before the weft insertion action of the loom.

[0015] The beneficial effects of this invention are as follows:

[0016] Existing electronic jacquard loom control systems all connect to the loom control system via a start button. After the loom control system starts the loom spindle motor, the jacquard independent drive system passively tracks the rotation of the loom spindle for synchronization. In this invention, the pre-starting of the jacquard loom motor provides a longer start-up time for the jacquard loom to reach the loom's synchronous speed. Furthermore, when the loom starts, the jacquard loom motor has already reached a certain speed. Accelerating from that speed to the synchronous speed requires less output acceleration torque compared to reaching the synchronous speed from a standstill, thus reducing the motor's power requirements.

[0017] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a system architecture diagram of the electronic jacquard loom control system in the existing technology.

[0020] Figure 2 This is a system architecture diagram of the electronic jacquard loom control system of the present invention. Implementation

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the invention's purpose, features, and advantages. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but are merely illustrative of the essential spirit of the invention's technical solution.

[0022] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0023] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0024] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0025] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0026] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0027] See Figure 2 As shown, an electronic jacquard loom control system includes a loom control system 1, a jacquard loom independent drive control system 2, and a starting system 3. The loom control system 1 controls the loom spindle drive motor 101, the jacquard loom independent drive control system 2 controls the jacquard loom drive motor 201, and the starting system 3 controls the jacquard loom independent drive control system 2, which in turn controls the loom control system 1. The starting system 3 sends a system start signal to the jacquard loom independent drive control system 2, which preprocesses the signal before sending it back to the loom control system 1.

[0028] Preferably, the start control signal button of the start system 3 is located on the control panel of the loom control system 1.

[0029] The operation control method of the electronic jacquard loom control system in this embodiment includes the following steps:

[0030] 1) After the start control signal button of the start system 3 is pressed, the jacquard machine independent drive control system 2 receives the start signal;

[0031] 2) Jacquard machine independent drive control system 2 The system starts the jacquard machine motor to start running at a certain speed;

[0032] 3) When the jacquard machine motor reaches the set position or speed, the jacquard machine independent drive control system 2 sends a start signal to the loom control system 1. After receiving the start signal, the loom control system 1 drives the loom main shaft to move.

[0033] 4) After the loom spindle starts running, the jacquard machine independent drive control system 2 collects the speed signal of the loom spindle and then performs synchronous operation control of the jacquard machine and the loom.

[0034] Furthermore, in step 2, the jacquard machine independent drive control system 2 simultaneously sends a pre-start signal to the jacquard machine opening control system 4. After receiving the pre-start signal, when the jacquard machine motor moves, the jacquard machine opening control system 4 maintains the current opening control data, so that the jacquard machine opening mechanism 5 maintains the current opening state.

[0035] Furthermore, in step 3, the jacquard machine independent drive control system 2 simultaneously sends a cancel pre-start signal to the jacquard machine shedding control system 4, and the jacquard machine shedding control system 4 outputs jacquard shedding control data according to the normal timing sequence to ensure that the shedding status is synchronized with the weft insertion of the loom.

[0036] In this embodiment, since the independent drive motor of the jacquard machine has already started rotating at a low speed and reached a certain speed through a certain angle, the output torque at motor startup can be reduced. By collecting the signal from the loom spindle encoder, the speed of the independent drive motor of the jacquard machine is calculated, ensuring that the operation of the loom spindle and the shedding of the jacquard machine are synchronized before the weft insertion action of the loom.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for operating control system of electronic jacquard loom, the control system of electronic jacquard loom comprises loom control system (1), jacquard independent drive control system (2), starting system (3), jacquard shedding control system (4) and jacquard shedding mechanism (5), the loom control system (1) is used for controlling loom spindle drive motor (101), the jacquard independent drive control system (2) is used for controlling jacquard drive motor (201), the jacquard independent drive control system (2) controls the jacquard shedding control system (4), the jacquard shedding control system (4) controls the jacquard shedding mechanism (5), the starting system (3) controls the jacquard independent drive control system (2), and the jacquard independent drive control system (2) controls the loom control system (1);The starting system (3) sends system starting signal to the jacquard independent drive control system (2), the system starting signal is preprocessed by the jacquard independent drive control system (2), and then the system starting signal is sent to the loom control system (1), and the starting control signal button of the starting system (3) is set on the control panel of the loom control system (1), characterized in that, Comprising the following steps: 1) After the start control signal button of the starting system (3) is pressed, the jacquard independent drive control system (2) receives a start signal; 2) The jacquard independent drive control system (2) starts the jacquard motor to run at a certain speed; 3) When the jacquard motor runs to a set position or speed, the jacquard independent drive control system (2) sends a start signal to the loom control system (1), and after the loom control system (1) receives the start signal, it drives the loom main shaft to move; 4) After the loom main shaft runs, the jacquard independent drive control system (2) collects the speed signal of the loom main shaft, and then controls the synchronous operation of the jacquard and the loom.

2. The operating control method of the electronic jacquard machine control system according to claim 1, characterized in that: In step 2, the jacquard independent drive control system (2) sends a pre-start signal to the jacquard shedding control system (4) at the same time, and after the jacquard shedding control system (4) receives the pre-start signal, when the jacquard motor moves, the jacquard shedding control system (4) keeps the current shedding control data, so that the jacquard shedding mechanism (5) keeps the current shedding state.

3. The operating control method of the electronic jacquard machine control system according to claim 1, characterized in that: In step 3, the jacquard independent drive control system (2) sends a pre-start signal to the jacquard shedding control system (4) at the same time, and the jacquard shedding control system (4) outputs the jacquard shedding control data according to the normal time sequence to ensure that the shedding state is synchronized with the loom weft insertion.

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