Control system for jacquard opening movement of weaving machine

Abstract

The utility model provides a control system for jacquard opening movement of a weaving machine, which 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, and the controller is electrically connected with the first driving device and the second driving device respectively; 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 not synchronous is solved.

Description

Technical Field

[0001] The utility model relates to the field of looms, in particular to a control system for jacquard shedding movement of a loom. Background Art

[0002] Currently, there are two approaches to selecting a jacquard opening for a loom: The first involves the loom's main motor directly driving the jacquard through a gearbox. This approach offers the advantage of a mechanical connection between the loom and jacquard, simplifying the control system and eliminating the need for an additional control system. However, the disadvantage is that when the jacquard is overloaded, the loom's main motor must be enlarged, limiting customer product adaptability. The second approach involves separate motors driving the loom and jacquard. This offers the advantage of simple transmission and ease of maintenance. However, the disadvantage is that the jacquard drive motor is generally provided by the jacquard manufacturer. Depending on the loom model, the performance of the two motors may vary, requiring separate control systems, requiring additional hardware and software control systems. Furthermore, the jacquard motor passively follows the loom's movement, inevitably leading to a certain lag or lead. This is particularly important for rapier looms, as even a slight missynchronization between the jacquard and loom can result in the rapier cutting the warp yarn.

[0003] Therefore, it is necessary to provide a new technical solution. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model discloses a control system for the jacquard shedding motion of a loom, and the specific technical solution is as follows:

[0005] The utility model 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 drive device and the second drive 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 loom main shaft position and the jacquard main shaft position. If so, the controller is further configured to adjust the speed of the second motor through the second drive device according to the position difference so that the jacquard main shaft position is consistent with the loom main shaft position.

[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 of the loom and the jacquard machine being started or stopped, 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] The utility model has the following beneficial effects:

[0016] The control system for the jacquard opening movement of a 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 a position sensor, so as to monitor the position difference of the loom and the jacquard machine in real time. The two motors are controlled to move independently by the same set of controllers to achieve the same movement angles of the main shafts of the loom and the jacquard machine, thereby solving the problem of asynchrony between the two control systems in the prior art and simplifying the complexity of the existing different control systems controlling different motors. It is simpler to complete synchronization and speed adjustment, and avoids the mode in which the jacquard machine passively follows the host machine.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0019] Figure 1 This is a block diagram of the control system for the jacquard shedding motion of the loom of this utility model.

[0020] Among them, 1-first motor, 2-second motor, 3-controller, 4-first driving device, 5-second driving device, 6-first sensor, 7-second sensor, 8-jacquard machine, 9-loom, 10-truss, 11-harness. DETAILED DESCRIPTION

[0021] The following describes in detail embodiments of the present invention, 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 explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, the connection may be fixed, detachable, or integrated; it may be mechanical or electrical; it may be directly connected or indirectly connected through an intermediate medium; it may refer to internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Figure 1 This is a block diagram of the control system for the jacquard shedding motion of the loom of this utility model.

[0025] like Figure 1 As shown, the control system for the jacquard shedding motion of a loom of the present invention includes 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, and the jacquard machine 8 is placed on a truss 10, located directly above the loom 9. The jacquard machine 8 completes the shedding motion of the loom through a harness 11.

[0026] The controller 3 is electrically connected to the first driving device 4 and the second driving device 5 respectively.

[0027] The first drive device 4 is connected to the first motor 1, which is connected to the main shaft of the loom 9. The second drive device 5 is connected to the second motor 2, which is connected to the main shaft of the jacquard machine 8. The first motor and the second motor are the same, and the first drive device and the second drive device are the same.

[0028] The first sensor 6 is provided on the loom 9, and the second sensor 7 is provided on the jacquard machine 8. Both the first sensor 6 and the second sensor 7 are position sensors.

[0029] 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 further 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.

[0030] 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 the A1 angle as the current loom flat heddle angle and the B angle as the current jacquard flat heddle angle.

[0031] 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 of the loom and the jacquard machine being started or stopped, 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.

[0032] The utility model also provides a method for controlling the jacquard shedding motion of a loom, which comprises the following steps:

[0033] Determine a preset loom spindle position, and 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.

[0034] The first sensor 6 detects the position of the loom main shaft in real time, while the second sensor 7 detects the position of the jacquard main shaft in real time;

[0035] The controller 3 receives the loom main shaft position information detected in real time by the first sensor 6, and the controller 3 receives the jacquard main shaft position information detected in real time by the second sensor 7;

[0036] The controller 3 determines whether there is a position difference between the loom main shaft position and the jacquard main shaft position. If so, the controller 3 adjusts the speed of the second motor 2 through the second drive device 5 according to the position difference so that the loom main shaft position is the same as the jacquard main shaft position.

[0037] When the controller of the utility model finds that there is a position difference (angle difference) between the loom and the jacquard machine through feedback from the position sensor, it sends commands to the two driving devices in real time to adjust the motor speeds and eliminate the difference.

[0038] The present invention utilizes a first motor 1 to drive a loom 9 and a second motor 2 to drive a jacquard loom 8. A controller 3 controls the motion patterns, starting, stopping, and various other operational requirements of the two motors. The two motors are each driven by two identical drive units that execute control system commands. A first position sensor 6 and a second position sensor 7 provide real-time feedback to the controller board 3 regarding the position (angle) of the loom and jacquard loom, respectively. The controller controls the speeds of the two motors based on the positional differences, ensuring synchronized operation. Furthermore, when initial position adjustments are required for either the loom or jacquard loom, these adjustments can be accomplished by independently moving the two motors.

[0039] In one embodiment, when the heddle angle of a loom or jacquard machine needs to be adjusted, it can be achieved by independently moving two motors. Specifically:

[0040] 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 the cycle of one rotation of the loom main shaft.

[0041] When the first sensor 6 detects that the main shaft of the loom has rotated to 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 has rotated to angle B1, and the controller 3 controls the second motor 2 through the second driving device 5 to drive the main shaft of the jacquard to rotate to angle B.

[0042] Set the A1 angle to the current loom flat heddle angle, and set the B angle to the current jacquard flat heddle angle. After completing the initialization synchronization, the loom flat heddle angle will change from A to A1, corresponding to the B of the jacquard.

[0043] For example: the preset loom heddle angle is 330 degrees, and the corresponding jacquard heddle angle is zero degrees. When the preset loom heddle 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 and synchronization, the loom heddle time is changed from 330 degrees to 320 degrees, and the corresponding jacquard heddle time is zero degrees.

[0044] In one embodiment, when the loom and jacquard machine are started or stopped, the controller controls the first motor and the second motor to operate at a first speed for a certain period of time from the start of the loom and jacquard machine. The first speed is lower than the preset speeds of the first and second motors, 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 jacquard machine, when starting and stopping, the time required for the loom to run from the starting state to the normal operating state or from the normal operating state to the stop state varies with 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 the stop state. The present invention can achieve variable load synchronization by setting different speed control parameters according to the load changes through a unified control system. For example, when the loom and jacquard machine are started, due to the heavy load of the jacquard machine, it cannot quickly reach the set operating speed. The present invention controls the loom and jacquard machine to operate at a speed lower than the set speed for a certain period of time after starting, and then returns to the set speed after the speed stabilizes.

[0045] The control system for the jacquard opening movement of a 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 a position sensor, so as to monitor the position difference of the loom and the jacquard machine in real time. The two motors are controlled to move independently by the same set of controllers to achieve the same movement angles of the main shafts of the loom and the jacquard machine, thereby solving the problem of asynchrony between the two control systems in the prior art and simplifying the complexity of the existing different control systems controlling different motors. It is simpler to complete synchronization and speed adjustment, and avoids the mode in which the jacquard machine passively follows the host machine.

[0046] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify and modify the above embodiments within the scope of the present invention.

Claims

1. A control system for jacquard shedding 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 driving device, a second driving device and a controller. The controller is electrically connected to the first drive device and the second drive 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 loom main shaft position and the jacquard main shaft position. If so, the controller is further configured to adjust the speed of the second motor through the second drive device according to the position difference so that the jacquard main shaft position is consistent with the loom main shaft position.

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

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

5. The control system for jacquard shedding 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 period of time since the loom and the jacquard machine are started or stopped, 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.

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