System and method for controlling jacquard opening movement of weaving machine

Abstract

The invention provides a control system and a control method for jacquard shedding motion of a weaving machine, the control system comprises a weaving machine, a jacquard machine, a first motor, a second motor, a first sensor, a second sensor, a first driving device, a second driving device and a controller, the controller is electrically connected with the first driving device and the second driving device; the first driving device is connected with the first motor, the first motor is connected with a main shaft of the weaving machine, the second driving device is connected with the second motor, and the second motor is connected with a main shaft of the jacquard machine; the first sensor is arranged on the weaving machine, and the second sensor is arranged on the jacquard machine; the two motors are adopted to respectively drive the weaving machine and the jacquard machine, but one set of control system is adopted, so that the problem that two sets of control systems are asynchronous is solved.

Description

Technical Field

[0001] The invention relates to the field of looms, and in particular to a control system and a control method for jacquard opening movement of a loom. Background Art

[0002] At present, there are two methods for looms to choose jacquard opening: the first one: the main motor of the loom directly drives the jacquard through the gear box. The advantage of this method is that the loom and the jacquard are mechanically connected synchronously, the control system is simple, and no additional control system is required. The disadvantage is that when the jacquard load is too large, the main motor of the loom needs to be increased, and the customer's variety adaptability is limited. The second group: the loom and the jacquard are driven by motors respectively. The advantage is that the transmission is simple and easy to maintain. The disadvantage is that the jacquard drive motor is generally provided by the jacquard manufacturer. Because the performance of the two motors may be different due to different loom models, they need to be controlled by two systems respectively, and an additional software and hardware control system is required. At the same time, the jacquard motor passively follows the movement of the loom, and there must be a certain lag or advance. This is very important for the rapier loom. The slight asynchronism between the jacquard and the loom will cause the rapier to cut the warp yarn.

[0003] Therefore, it is necessary to provide a new technical solution. Summary of the invention

[0004] In order to solve the technical problems existing in the prior art, the present invention discloses a control system and a control method for the jacquard opening motion of a loom, and the specific technical scheme is as follows:

[0005] On the one hand, the present invention provides a control system for jacquard opening movement of a loom, which includes a loom, a jacquard machine, a first motor, a second motor, a first sensor, a second sensor, a first drive device, a second drive device and a controller.

[0006] The controller is electrically connected to the first driving device and the second driving device respectively;

[0007] The first driving device is connected to the first motor, the first motor is connected to the main shaft of the loom, the second driving device is connected to the second motor, and the second motor is connected to the main shaft of the jacquard machine;

[0008] The first sensor is arranged on the loom, and the second sensor is arranged on the jacquard machine;

[0009] The first sensor is configured to detect the position of the main shaft of the loom, and the second sensor is configured to detect the position of the main shaft of the jacquard machine,

[0010] The controller is configured to determine whether there is a position difference between the main shaft position of the loom and the main shaft position of the jacquard machine. If so, the controller is also configured to adjust the rotation speed of the second motor through the second driving device according to the position difference so that the main shaft position of the jacquard machine is consistent with the main shaft position of the loom.

[0011] Furthermore, the first sensor and the second sensor are both position sensors, the first motor is the same as the second motor, and the first driving device is the same as the second driving device.

[0012] Furthermore, the jacquard machine is located above the loom.

[0013] Furthermore, the controller is also configured with a preset loom flat heddle angle of angle A and a preset jacquard flat heddle angle of angle B. When the preset loom flat heddle angle is adjusted from angle A to angle A1, the first sensor 6 is also configured to detect that the loom main shaft rotates to angle A1, and the controller 3 is configured to control the first motor 1 to stop rotating through the first drive device 4. At this time, the second sensor 7 is configured to detect that the jacquard main shaft rotates to angle B1, and the controller 3 is configured to control the second motor 2 to drive the jacquard main shaft to rotate to angle B through the second drive device 5; the controller 3 is also configured to set angle A1 as the current loom flat heddle angle and angle B as the current jacquard flat heddle angle.

[0014] Furthermore, when the loom and the jacquard machine are started or stopped, the controller is configured to control the first motor and the second motor to operate at a first speed within a certain time from the start or stop of the loom and the jacquard machine, wherein the first speed is lower than the preset speeds of the first motor and the second motor, and the preset speed of the first motor is equal to the preset speed of the second motor.

[0015] On the other hand, the present invention also provides a method for controlling the jacquard opening movement of a loom, which comprises the following steps:

[0016] Determine a preset loom main shaft position, and determine a preset jacquard main shaft position, wherein the preset loom main shaft position is consistent with the preset jacquard main shaft position;

[0017] The first sensor is used to detect the position of the main shaft of the loom in real time, and the second sensor is used to detect the position of the main shaft of the jacquard machine in real time;

[0018] The controller receives the position information of the main shaft of the loom detected in real time by the first sensor, and the controller receives the position information of the main shaft of the jacquard machine detected in real time by the second sensor.

[0019] The controller determines whether there is a position difference between the main shaft position of the loom and the main shaft position of the jacquard machine. If so, the controller adjusts the speed of the second motor through the second drive device according to the position difference so that the main shaft position of the loom is the same as the main shaft position of the jacquard machine.

[0020] Further, the preset loom main shaft position corresponds to the loom main shaft angle value, and the preset jacquard main shaft position corresponds to the jacquard main shaft angle value, wherein the loom main shaft angle value is the same as the jacquard main shaft angle value.

[0021] Furthermore, it also includes: the preset loom flat heddle angle is angle A, and the corresponding jacquard flat heddle angle is angle B. When the preset loom flat heddle angle is adjusted from angle A to angle A1, the first sensor detects the rotation angle of the loom main shaft in real time, and the second sensor detects the rotation angle of the jacquard main shaft in real time;

[0022] When the first sensor detects that the main shaft of the loom rotates to the angle A1, the controller controls the first motor to stop rotating through the first driving device. At this time, the second sensor detects that the main shaft of the jacquard machine rotates to the angle B1, and the controller controls the second motor to drive the main shaft of the jacquard machine to rotate to the angle B through the second driving device;

[0023] Set the A1 angle as the current loom flat heddle angle, and the corresponding jacquard flat heddle angle is angle B.

[0024] Furthermore, it also includes: when the loom and the jacquard machine are started or stopped, within a certain time from the start of the loom and the jacquard machine, the controller controls the first motor and the second motor to operate at a first speed, wherein the first speed is lower than the preset speeds of the first motor and the second motor, and the preset speed of the first motor is equal to the preset speed of the second motor.

[0025] Furthermore, the first sensor and the second sensor are both position sensors, the first motor is the same as the second motor, and the first driving device is the same as the second driving device.

[0026] The present invention has the following beneficial effects:

[0027] The control system of the jacquard opening movement of the loom of the present invention adopts two motors with the same parameters to drive the loom and the jacquard machine respectively, but adopts a set of controllers to feedback the rotation angles of the main shafts of the loom and the jacquard machine through position sensors, so as to monitor the position difference of the loom and the jacquard machine in real time, and control the two motors to move independently through the same set of controllers, so as to achieve the consistency of the movement angles of the main shafts of the loom and the jacquard machine, solve the problem of the asynchronism of the two control systems in the prior art, and also simplify the complexity of the existing different control systems controlling different motors, so that it is simpler to complete synchronization and speed adjustment, and avoid the mode of the jacquard machine passively following the host machine.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a control system block diagram of the jacquard opening motion of the loom of the present invention.

[0031] Among them, 1-the first motor, 2-the second motor, 3-the controller, 4-the first driving device, 5-the second driving device, 6-the first sensor, 7-the second sensor, 8-the jacquard machine, 9-the loom, 10-the frame, and 11-the harness. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, fixed connection, detachable connection, or integrated; mechanical connection, or electrical connection; direct connection, or indirect connection through an intermediate medium, or internal connection between two elements or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Figure 1 It is a control system block diagram of the jacquard opening motion of the loom of the present invention.

[0036] like Figure 1As shown, the control system of the loom jacquard opening movement of the present invention comprises a loom 9, a jacquard machine 8, a first motor 1, a second motor 2, a first sensor 6, a second sensor 7, a first drive device 4, a second drive device 5 and a controller 3. The loom 9 is placed on the ground, the jacquard machine 8 is placed on a building frame 10, which is located directly above the loom 9, and the jacquard machine 8 completes the opening movement of the loom through a harness 11.

[0037] The controller 3 is electrically connected to the first driving device 4 and the second driving device 5 respectively.

[0038] The first drive device 4 is connected to the first motor 1, and the first motor 1 is connected to the main shaft of the loom 9; the second drive device 5 is connected to the second motor 2, and the second motor 2 is connected to the main shaft of the jacquard machine 8. The first motor is the same as the second motor, and the first drive device is the same as the second drive device.

[0039] The first sensor 6 is arranged on the loom 9, and the second sensor 7 is arranged on the jacquard machine 8. The first sensor 6 and the second sensor 7 are both position sensors.

[0040] The first sensor 6 is configured to detect the position of the loom main shaft, the second sensor 7 is configured to detect the position of the jacquard main shaft, and the controller 3 is configured to determine whether there is a position difference between the loom main shaft position and the jacquard main shaft position. If so, the controller 3 is also configured to adjust the speed of the second motor through the second drive device according to the position difference so that the loom main shaft position is consistent with the jacquard main shaft position.

[0041] Furthermore, the controller is also configured with a preset loom flat heddle angle of angle A and a preset jacquard flat heddle angle of angle B. When the preset loom flat heddle angle is adjusted from angle A to angle A1, the first sensor 6 is also configured to detect that the loom main shaft rotates to angle A1, and the controller 3 is configured to control the first motor 1 to stop rotating through the first drive device 4. At this time, the second sensor 7 is configured to detect that the jacquard main shaft rotates to angle B1, and the controller 3 is configured to control the second motor 2 to drive the jacquard main shaft to rotate to angle B through the second drive device 5; the controller 3 is also configured to set angle A1 as the current loom flat heddle angle and angle B as the current jacquard flat heddle angle.

[0042] Further, when the loom and the jacquard machine are started or stopped, the controller is configured to control the first motor and the second motor to operate at a first speed within a certain period of time from the start or stop of the loom and the jacquard machine, wherein the first speed is lower than the preset speeds of the first motor and the second motor, and the preset speed of the first motor is equal to the preset speed of the second motor.

[0043] The present invention also provides a method for controlling the jacquard opening movement of a loom, which comprises the following steps:

[0044] Determine a preset loom spindle position, determine a preset jacquard spindle position, wherein the preset loom spindle position is consistent with the preset jacquard spindle position; wherein the preset loom spindle position corresponds to a loom spindle angle value, and the preset jacquard spindle position corresponds to a jacquard spindle angle value, wherein the loom spindle angle value is the same as the first jacquard spindle angle value.

[0045] The position of the main shaft of the loom is detected in real time by the first sensor 6, and the position of the main shaft of the jacquard machine is detected in real time by the second sensor 7;

[0046] The controller 3 receives the position information of the main shaft of the loom detected in real time by the first sensor 6, and the controller 3 receives the position information of the main shaft of the jacquard machine detected in real time by the second sensor 7;

[0047] The controller 3 determines whether there is a position difference between the main shaft position of the loom and the main shaft position of the jacquard machine. If so, the controller 3 adjusts the rotation speed of the second motor 2 through the second drive device 5 according to the position difference so that the main shaft position of the loom is the same as the main shaft position of the jacquard machine.

[0048] When the controller of the present invention finds through feedback from the position sensor that there is a position difference (angle difference) between the loom and the jacquard machine, it sends commands to the two driving devices in real time to adjust the motor speeds and eliminate the difference.

[0049] The present invention drives the loom 9 by the first motor 1, drives the jacquard 8 by the second motor 2, and the controller 3 controls the movement law, start, stop and various operation requirements of the two motors. The two motors are respectively driven by two identical driving devices to execute the command of the control system. The first position sensor 6 and the second position sensor 7 respectively feed back the position (angle) of the loom and the jacquard to the controller board 3 in real time. The controller controls the speed of the two motors according to the position difference to ensure the synchronous operation of the loom and the jacquard. At the same time, when it is necessary to initialize the position adjustment of the loom or the jacquard, it can be completed by independently moving the two motors.

[0050] In one embodiment, when the heald angle of a loom or jacquard machine needs to be adjusted, it can be achieved by independently moving two motors. Specifically:

[0051] The preset loom flat heddle angle is recorded as angle A, and the preset jacquard flat heddle angle is recorded as angle B. When the preset loom flat heddle angle is adjusted from angle A to angle A1, the first sensor 6 detects the rotation angle of the loom main shaft in real time, and the second sensor 7 detects the rotation angle of the jacquard main shaft in real time; the preset loom flat heddle angle is adjusted from angle A to angle A1 within a period of one rotation of the loom main shaft.

[0052] When the first sensor 6 detects that the main shaft of the loom rotates to the angle A1, the controller 3 controls the first motor 1 to stop rotating through the first driving device 4. At this time, the second sensor 7 detects that the main shaft of the jacquard machine rotates to the angle B1, and the controller 3 controls the second motor 2 to drive the main shaft of the jacquard machine to rotate to the angle B through the second driving device 5;

[0053] Set the A1 angle to the current loom flat heddle angle, and set the B angle to the current jacquard flat heddle angle. After the initialization synchronization is completed, the loom flat heddle angle will be changed from A to A1, corresponding to B of the jacquard.

[0054] For example: the preset loom flat angle is 330 degrees, and the corresponding jacquard flat angle is zero. When the preset loom flat angle needs to be changed to 320 degrees, the controller can control the first motor 1 to stop when the loom main shaft rotates to 320 degrees, and then control the jacquard 2 to rotate forward until the jacquard main shaft is zero degrees. After re-initialization synchronization, the loom flat time is changed from 330 degrees to 320 degrees, and the corresponding jacquard flat time is zero degrees.

[0055] In one embodiment, when the loom and the jacquard machine are started or stopped, within a certain time from the start of the loom and the jacquard machine, the controller controls the first motor and the second motor to run at a first speed, wherein the first speed is lower than the preset speed of the first motor and the second motor, and the preset speed of the first motor is equal to the preset speed of the second motor. In the present invention, due to the different loads of the loom and the jacquard machine, when starting and stopping, according to the different loads, the time required for the loom to run from the starting state to the normal operating state or from the normal operating state to stop rotating is different from the time required for the jacquard machine to run from the starting state to the normal operating state or from the normal operating state to stop rotating. The present invention can set different speed control parameters according to the change of load through a unified control system to complete the synchronization of variable load. For example, when the loom and the jacquard machine are started, due to the large load of the jacquard machine, it cannot quickly reach the set operating speed. The present invention controls the loom and the jacquard machine to run at a speed lower than the set speed within a certain time after starting, and then returns to the set speed after the speed stabilizes.

[0056] The control system of the jacquard opening movement of the loom of the present invention adopts two motors with the same parameters to drive the loom and the jacquard machine respectively, but adopts a set of controllers to feedback the rotation angles of the main shafts of the loom and the jacquard machine through position sensors, so as to monitor the position difference of the loom and the jacquard machine in real time, and control the two motors to move independently through the same set of controllers, so as to achieve the consistency of the movement angles of the main shafts of the loom and the jacquard machine, solve the problem of the asynchronism of the two control systems in the prior art, and also simplify the complexity of the existing different control systems controlling different motors, so that it is simpler to complete synchronization and speed adjustment, and avoid the mode of the jacquard machine passively following the host machine.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A control system for jacquard opening motion of a loom, characterized in that: It includes a loom, a jacquard machine, a first motor, a second motor, a first sensor, a second sensor, a first drive device, a second drive device and a controller. The controller is electrically connected to the first driving device and the second driving device respectively; The first driving device is connected to the first motor, the first motor is connected to the main shaft of the loom, the second driving device is connected to the second motor, and the second motor is connected to the main shaft of the jacquard machine; The first sensor is arranged on the loom, and the second sensor is arranged on the jacquard machine; The first sensor is configured to detect the position of the main shaft of the loom, and the second sensor is configured to detect the position of the main shaft of the jacquard machine, The controller is configured to determine whether there is a position difference between the main shaft position of the loom and the main shaft position of the jacquard machine. If so, the controller is also configured to adjust the rotation speed of the second motor through the second driving device according to the position difference so that the main shaft position of the jacquard machine is consistent with the main shaft position of the loom.

2. The control system for the jacquard opening motion of a loom according to claim 1, characterized in that: The first sensor and the second sensor are both position sensors, the first motor is the same as the second motor, and the first driving device is the same as the second driving device.

3. The control system for the jacquard opening motion of a loom according to claim 1, characterized in that: The jacquard machine is located above the loom.

4. The control system for the jacquard opening motion of a loom according to claim 1, characterized in that: The controller is also configured with a preset loom flat heddle angle of angle A and a preset jacquard flat heddle angle of angle B. When the preset loom flat heddle angle is adjusted from angle A to angle A1, the first sensor 6 is also configured to detect that the loom main shaft rotates to angle A1, and the controller 3 is configured to control the first motor 1 to stop rotating through the first drive device 4. At this time, the second sensor 7 is configured to detect that the jacquard main shaft rotates to angle B1, and the controller 3 is configured to control the second motor 2 to drive the jacquard main shaft to rotate to angle B through the second drive device 5; the controller 3 is also configured to set angle A1 to the current loom flat heddle angle and angle B to the current jacquard flat heddle angle.

5. The control system for the jacquard opening motion of a loom according to claim 1, characterized in that: When the loom and the jacquard machine are started or stopped, the controller is configured to control the first motor and the second motor to operate at a first speed within a certain time from the start or stop of the loom and the jacquard machine, wherein the first speed is lower than the preset speeds of the first motor and the second motor, and the preset speed of the first motor is equal to the preset speed of the second motor.

6. A method for controlling the opening movement of a jacquard loom, characterized in that: It includes the following steps: Determine a preset loom main shaft position, and determine a preset jacquard main shaft position, wherein the preset loom main shaft position is consistent with the preset jacquard main shaft position; The first sensor is used to detect the position of the main shaft of the loom in real time, and the second sensor is used to detect the position of the main shaft of the jacquard machine in real time; The controller receives the position information of the main shaft of the loom detected in real time by the first sensor, and the controller receives the position information of the main shaft of the jacquard machine detected in real time by the second sensor. The controller determines whether there is a position difference between the main shaft position of the loom and the main shaft position of the jacquard machine. If so, the controller adjusts the speed of the second motor through the second drive device according to the position difference so that the main shaft position of the loom is the same as the main shaft position of the jacquard machine.

7. The control method of jacquard opening motion of a loom according to claim 6, characterized in that: The preset loom spindle position corresponds to the loom spindle angle value, and the preset jacquard spindle position corresponds to the jacquard spindle angle value, wherein the loom spindle angle value is the same as the jacquard spindle angle value.

8. The method for controlling the jacquard opening motion of a loom according to claim 6, characterized in that: Also includes: The preset loom flat heddle angle is angle A, and the corresponding jacquard flat heddle angle is angle B. When the preset loom flat heddle angle is adjusted from angle A to angle A1, the first sensor detects the rotation angle of the loom main shaft in real time, and the second sensor detects the rotation angle of the jacquard main shaft in real time; When the first sensor detects that the main shaft of the loom rotates to the angle A1, the controller controls the first motor to stop rotating through the first driving device. At this time, the second sensor detects that the main shaft of the jacquard machine rotates to the angle B1, and the controller controls the second motor to drive the main shaft of the jacquard machine to rotate to the angle B through the second driving device; Set the A1 angle as the current loom flat heddle angle, and the corresponding jacquard flat heddle angle is angle B.

9. The control method of jacquard opening motion of a loom according to claim 6, characterized in that: Also includes: When the loom and the jacquard machine are started or stopped, within a certain period of time since the loom and the jacquard machine are started or stopped, the controller controls the first motor and the second motor to operate at a first speed, wherein the first speed is lower than a preset speed of the first motor and the second motor, and the preset speed of the first motor is equal to the preset speed of the second motor.

10. The control method of jacquard opening motion of a loom according to claim 8, characterized in that: The first sensor and the second sensor are both position sensors, the first motor is the same as the second motor, and the first driving device is the same as the second driving device.

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