Wire guide mechanism and wire guide mechanism control method

Abstract

The application discloses a guide bar mechanism which can be used in a drawing frame and can reduce labor cost and improve working efficiency of the drawing frame. The guide bar mechanism comprises a rack, a guide bar roller arranged on the rack and used for pulling a cotton sliver, a guide bar compression roller assembly arranged on the rack and abutting against a surface of the guide bar roller to stabilize the cotton sliver, and a driving piece used for driving the guide bar compression roller assembly to move away from the surface of the guide bar roller.

Description

Technical Field

[0001] This application relates to the field of cotton spinning machinery technology, and in particular to a guide mechanism and a control method for the guide mechanism. Background Technology

[0002] In cotton textile machinery, such as drawing frames, the sliver guiding mechanism is a crucial component. Especially on advanced drawing frames, pressure rollers are often used to control sliver tension and ensure stable sliver feeding during high-speed production. However, in actual use, due to the thinness of the sliver and the high operating speed of the equipment, sliver breakage is prone to occur. Currently, this relies on manual adjustment of the pressure rollers to reconnect the sliver, thus increasing labor costs and reducing equipment efficiency. Summary of the Invention

[0003] This application provides a guide bar mechanism and a guide bar mechanism control method. The guide bar mechanism can be used in a drawing machine, which can reduce labor costs and improve equipment efficiency.

[0004] A first aspect of this application provides a strip guiding mechanism for a drawing frame, the strip guiding mechanism comprising:

[0005] frame;

[0006] A guide roller, disposed on the frame, is used to pull the sliver;

[0007] A guide roller assembly is disposed on the frame, and the guide roller assembly abuts against the surface of the guide roller to stabilize the sliver;

[0008] A drive element for driving the guide roller assembly away from the surface of the guide roller.

[0009] In some embodiments, the guide roller assembly includes:

[0010] The roller head abuts against the surface of the guide roller;

[0011] Mounting rods are provided on the frame;

[0012] The support arm is rotatably connected at one end to the mounting rod and at the other end to the roller head.

[0013] In some embodiments, the above-mentioned guide roller assembly further includes:

[0014] A pressure roller rotating arm is fixedly connected to the support arm, and the pressure roller rotating arm is used to drive the support arm to lift; and / or,

[0015] A cotton guide ring is disposed on the mounting rod and is used to sleeve the cotton strip.

[0016] In some embodiments, the driving element includes:

[0017] A cylinder, used to push the pressure roller arm when an air source is input, so as to move the roller head away from the surface of the guide roller; or,

[0018] An electric cylinder is used to push the pressure roller arm when powered to move the roller head away from the surface of the guide roller.

[0019] In some embodiments, the driving element further includes:

[0020] A mounting base is fixedly connected to the mounting rod and is used to fix the cylinder or electric cylinder.

[0021] In some embodiments, the mounting rod is a hollow structure, and the mounting rod is used to pass through a power cable conduit, which is used to transmit the input air source to the cylinder or the input power source to the electric cylinder.

[0022] In some embodiments, the guide bar mechanism further includes:

[0023] A drive belt is disposed within the frame, and the drive belt is used to drive the guide roller to rotate.

[0024] In some embodiments, there are multiple guide rollers, which are distributed on both sides of the frame along the traction direction of the sliver;

[0025] Each of the guide rollers corresponds to at least one guide roller assembly.

[0026] In some embodiments, the guide bar mechanism further includes:

[0027] A controller is used to receive an inspection signal and control a power source to provide power to the drive unit so that the drive unit can operate. The inspection signal is related to the shape of the sliver during traction.

[0028] A second aspect of this application provides a method for controlling a guide strip mechanism, wherein the guide strip mechanism is used in a drawing machine, and the control method includes:

[0029] Acquire consecutive multi-frame images of the cotton sliver during traction;

[0030] Based on the continuous multi-frame images, the morphological curve of the tampon in each frame image is plotted;

[0031] Establish a coordinate system for the morphological curve, and calculate the area of ​​the shape enclosed by the morphological curve and the coordinate axes in each frame of the image;

[0032] If the area of ​​the graphic is always less than a preset threshold in a preset number of consecutive frames, the guide roller assembly is controlled to move away from the guide roller.

[0033] In summary, this application provides a sliver guiding mechanism that can be used in a drawing frame, comprising: a frame; a guide roller disposed on the frame for guiding the sliver; a guide pressure roller assembly disposed on the frame, the guide pressure roller assembly abutting against the surface of the guide roller to stabilize the sliver; and a driving member for driving the guide pressure roller assembly away from the surface of the guide roller. By providing a driving member, this application can drive the guide pressure roller assembly away from the surface of the guide roller, thus eliminating the need for manual lifting of the pressure roller assembly when the sliver breaks, thereby saving labor costs and improving equipment efficiency. Attached Figure Description

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0035] Figure 1 A partial schematic structural diagram of a guide bar mechanism provided in an embodiment of this application;

[0036] Figure 2 A schematic block diagram of a guide bar mechanism provided for an embodiment of this application;

[0037] Figure 3 A schematic structural diagram of a guide bar pressure roller assembly provided in an embodiment of this application;

[0038] Figure 4 A schematic structural diagram of a guide roller assembly in a falling state, provided for an embodiment of this application;

[0039] Figure 5 A schematic structural diagram of a guide roller assembly in a raised state, provided in an embodiment of this application;

[0040] Figure 6 A schematic structural diagram of a guide bar mechanism provided for an embodiment of this application;

[0041] Figure 7 A schematic flowchart illustrating a guide bar mechanism control method provided in an embodiment of this application;

[0042] Figure 8 This is a schematic coordinate diagram of a tampon shape curve provided in an embodiment of this application.

[0043] in, Figures 1 to 6 The correspondence between component names and their numbers is as follows:

[0044] 100 frame, 200 guide rollers, 300 guide roller assembly, 400 drive unit, 500' strip canister, 600 column, 700 conveyor belt, 800 controller, 900 power source;

[0045] 310 Roller body, 320 Mounting rod, 330 Support arm, 340 Pressure roller rotating arm, 350 Cotton guide ring, 410 Fixing seat, 420 Power line tube, 510' Cotton sliver. Detailed Implementation

[0046] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0047] Under normal operating conditions, the rollers and pressure rollers of the guide sliver mechanism are in contact, and the sliver is stably controlled between them. However, in actual production, due to excessive traction force of the sliver traction equipment or excessively thin slivers, there is a possibility of sliver breakage. When sliver breakage occurs, the guide sliver mechanism needs to stop operating. Since the force on the sliver is mainly concentrated on the guide roller assembly and the traction equipment, the breakage point often occurs between these two points. Related technologies rely on manual labor to lift the pressure rollers to reconnect the broken sliver, resulting in high labor costs and low equipment efficiency.

[0048] In view of this, embodiments of this application propose a guide bar mechanism to at least solve the above-mentioned technical problems.

[0049] Figure 1 A partial schematic structural diagram of a guide bar mechanism provided in this application embodiment, as shown below. Figure 1 As shown, the above-mentioned guide strip mechanism includes: a frame 100, a guide strip roller 200, a guide strip pressure roller assembly 300, and a drive member 400. The guide strip roller 200 is disposed on the frame 100 and is used to pull the cotton sliver 510'; the guide strip pressure roller assembly 300 is disposed on the frame 100 and abuts against the surface of the guide strip roller 200 to stabilize the cotton sliver 510'; the drive member 400 is used to drive the guide strip pressure roller assembly 300 away from the surface of the guide strip roller 200.

[0050] For example, such as Figure 1As shown, the guide roller 200 and the guide pressure roller assembly 300 are both mounted on the frame 100. The frame 100 can stabilize and support the guide roller 200 and the guide pressure roller assembly 300, thereby reducing the vibration of the traction sliver 510′ when the guide mechanism is working, and improving the quality of the product.

[0051] Under the action of the aforementioned sliver traction device (not shown in the figure), the sliver 510' in the sliver can 500' passes between the guide roller assembly 300 and the guide roller 200. The guide roller 200 controls the tension of the sliver 510' to provide traction. The surfaces of the guide roller assembly 300 and the guide roller 200 abut against each other. That is, when the guide roller assembly 300 and the guide roller 200 come into contact with each other, a certain interaction force is generated. This interaction force can prevent the sliver 510' between the guide roller assembly 300 and the guide roller 200 from slipping off, thereby playing a stabilizing role.

[0052] Based on the aforementioned guide roller 200 and guide pressure roller assembly 300, this embodiment of the application provides a driving component 400, which can drive the guide pressure roller assembly 300 away from the surface of the guide roller 200. When the cotton sliver 510′ breaks, there is no need to manually lift the pressure roller assembly, thereby saving labor costs and improving the working efficiency of the equipment.

[0053] In some examples, Figure 2 A schematic block diagram of a guide bar mechanism provided for embodiments of this application, such as... Figure 2 As shown, the guide strip mechanism further includes a controller 800 for receiving inspection signals and controlling the power source 900 to provide power to the drive member 400 so that the drive member 400 can work. The inspection signals are related to the shape of the cotton strip 510′ in the traction.

[0054] For example, the above-mentioned inspection signal can be issued by the detection equipment (not shown in the figure) in the production plant. The detection equipment can be a photoelectric detection device. When the shape of the cotton strip 510' changes, such as when it breaks, the detection device sends an inspection signal to the controller 800. The controller 800 controls the power source 900 to provide power to the drive unit 400 so that the drive unit 400 can work.

[0055] It should be noted that the controller 800 can be a commonly used processing device in industrial production, such as a microcontroller or a PLC (Programmable Logic Controller). The power source 900 is used to provide power, such as a power supply; its specific type depends on the type of the drive component 400.

[0056] In this embodiment, the controller 800, upon receiving an inspection signal indicating an abnormal shape of the cotton sliver 510′, provides power to the drive component 400 via the power source 900, thereby enabling the drive component 400 to operate and move the guide roller assembly 300 away from the surface of the guide roller 200. This method is more efficient than manually controlling the drive component 400.

[0057] Figure 3 This is a schematic structural diagram of a guide roller assembly provided in an embodiment of this application, combined with... Figure 1 and Figure 3 As shown, in some examples, the guide roller assembly 300 includes a roller head, a mounting rod 320, and a support arm 330. The roller head abuts against the surface of the guide roller 200 to stabilize the sliver 510'; the mounting rod 320 is disposed on the frame 100, and one end of the support arm 330 is rotatably connected to the roller head, and the other end is rotatably connected to the mounting rod 320.

[0058] For example, such as Figure 3 As shown, the aforementioned support arm 330 can rotate in a plane around the mounting rod 320, thereby driving the roller head away from or towards the guide roller 200. This fixes the direction of the force exerted by the roller head on the surface of the guide roller 200. Simultaneously, the support arm 330 and the roller head are rotatably connected, allowing the roller head to rotate naturally under the frictional force of the traction sliver 510', reducing resistance to the sliver 510' and minimizing the possibility of breakage.

[0059] It should be noted that the connection between the support arm 330 and the mounting rod 320 can be set to a small frictional force. That is, after the driving component 400 is removed, the support arm 330 can fall naturally under the action of gravity. In this way, in the event of a breakage of the cotton sliver 510′, the driving component 400 drives the support arm 330 to rise, the operator completes the splicing of the cotton sliver 510′, and the driving force of the driving component 400 is removed. The support arm 330 falls naturally without manual operation, the roller head re-contacts the guide roller 200, and the guide machine continues to work. This can further reduce labor costs and improve the working efficiency of the equipment.

[0060] In some examples, the rotatable connection between the support arm 330 and the mounting rod 320 can be fitted with a snap-fit ​​to prevent the support wall from rotating too much.

[0061] In some examples, such as Figure 3 As shown, the guide bar pressure roller assembly 300 further includes a pressure roller rotating arm 340, which is fixedly connected to the support arm 330 and is used to drive the support arm 330 to lift.

[0062] For example, by means of a fixed connection, that is, the pressure roller arm 340 and the support arm 330 will not have relative displacement, so that the drive member 400 can transmit the driving force to the support arm 330 through the pressure roller arm 340, and the support arm 330 drives the roller head away from the surface of the guide roller 200.

[0063] It should be noted that the above-mentioned fixed connection can be a direct connection or an indirect connection. A direct connection refers to a connection without an intermediate medium between the two, such as welding, which has high strength. An indirect connection refers to a connection with an intermediate medium between the two. For example, an intermediate component can be set to connect the support arm 330 and the pressure roller rotating arm 340. The pressure roller rotating arm 340 and the intermediate component can be in a snap-fit ​​form for easy disassembly and replacement.

[0064] In some examples, such as Figure 1 As shown, the guide roller assembly 300 further includes a cotton guide ring 350, which is disposed on the mounting rod 320 and is used to sleeve the cotton strip 510'.

[0065] For example, the cotton guide ring 350 can cover the cotton strip 510' during traction to prevent the cotton strip 510' from being too long and getting tangled with the protruding point of the device, which could lead to accidental breakage. The shape of the cotton guide ring 350 can be circular, square, or triangular, and this application embodiment does not specifically limit it.

[0066] In some examples, such as Figure 3 As shown, the drive unit 400 includes a cylinder that can push the pressure roller arm 340 when an air source is input, so that the roller head is away from the surface of the guide roller 200.

[0067] In some examples, such as Figure 3 As shown, the drive unit 400 includes an electric cylinder that can push the pressure roller arm 340 when a power source is input, so that the roller head is away from the surface of the guide roller 200.

[0068] For example, the aforementioned drive unit 400 can be a pneumatic cylinder or an electric cylinder. When the pneumatic source or the electric source is used as the power source, it can generate power through the piston. When the pneumatic source or the electric source is removed, the piston can be returned to the initial position by the action of a spring or similar element.

[0069] It should be noted that miniature cylinders or electric cylinders can be used, which are convenient for installation and save equipment space.

[0070] In some examples, such as Figure 3 As shown, the drive unit 400 also includes a fixing seat 410, which is fixedly connected to the mounting rod 320 and is used to fix the cylinder or electric cylinder.

[0071] For example, the cylinder or electric cylinder is fixed by the fixing seat 410, which can not only stabilize the cylinder or electric cylinder, but also facilitate the disassembly of the cylinder or electric cylinder.

[0072] To better understand the guide bar mechanism provided in the embodiments of this application, the embodiments of this application illustrate the structural position changes of the guide bar mechanism under different working conditions. Figure 4 This is a schematic structural diagram of a guide roller assembly in its falling state, provided in an embodiment of this application. Figure 5 This is a schematic structural diagram of a guide roller assembly in a raised state, provided in an embodiment of this application. Figure 4 and Figure 5 The operation of the guide bar mechanism provided in the embodiments of this application is described as follows:

[0073] like Figure 4 As shown, in the normal working chamber, the guide roller assembly 300 and the guide roller 200 abut against each other, and the sliver 510′ is stably transported under the action of the aforementioned sliver traction device (not shown in the figure).

[0074] like Figure 5 As shown, the cotton sliver 510' breaks unexpectedly. After the aforementioned detection equipment (such as photoelectric detection equipment) detects it, it sends the aforementioned inspection signal. The guide sliver mechanism stops working. After receiving the inspection signal, the controller 800 controls the power source 900 to connect the air source to the cylinder. The cylinder pushes the aforementioned pressure roller arm 340, causing the roller body 310 to rise. At this time, the operator can complete the splicing of the cotton sliver 510'.

[0075] After the splicing of tampons 510' is completed, the operator restarts the guide mechanism, the controller 800 disconnects the air supply, the cylinder stops working, and the aforementioned support arm 330, under its own weight, falls to the working position. Figure 3 As shown.

[0076] In some examples, combined Figure 1 and Figure 3 As shown, the mounting rod 320 is a hollow structure. The mounting rod 320 is used to pass through the power cable 420. The power cable 420 is used to transmit the input air source to the cylinder or the input power source to the electric cylinder.

[0077] For example, when the drive component 400 is a pneumatic cylinder or an electric cylinder, a power source 900 is required for both to function properly. Considering that the guide bar mechanism will become entangled with many cotton strips 510' in actual production, the mounting rod 320 can be designed as a hollow structure. This allows the pneumatic or electric cylinder to be provided with the corresponding air or power source. The power line 420 of the power source 900 can pass through the mounting rod 320 and connect to the pneumatic or electric cylinder, reducing entanglement with the cotton strips 510' and improving the reliability of the equipment's normal operation.

[0078] Figure 6 A schematic structural diagram of a guide bar mechanism provided for an embodiment of this application, such as... Figure 6 As shown, in some examples, the guide bar mechanism further includes a conveyor belt 700 disposed within the frame 100, the conveyor belt being used to drive the guide bar roller 200 to rotate.

[0079] For example, such as Figure 6 As shown, a conveyor belt 700 can be installed inside the frame 100. The conveyor belt 700 drives the guide roller 200 to rotate, which can provide better stretching of the traction sliver 510′. Furthermore, by controlling the conveying speed of the conveyor belt 700, the rotation speed of the guide roller 200 can be adjusted, thereby adjusting the traction speed of the sliver 510′.

[0080] According to some embodiments, such as Figure 6 As shown, there are multiple guide rollers 200, which are distributed on both sides of the frame 100 along the traction direction of the sliver 510′; wherein each guide roller 200 corresponds to at least one guide roller assembly 300.

[0081] It should be noted that, in order to improve the working efficiency of the sliver 510′, multiple slivers 510′ are often pulled simultaneously in a drawing frame. Multiple guide rollers 200 can be set up. The multiple guide rollers 200 are distributed on both sides of the frame 100 along the traction direction of the sliver 510′. Each guide roller 200 cooperates with at least one guide roller assembly 300, thereby ensuring that each guide roller 200 and guide roller assembly 300 can pull at least one sliver 510′, which can improve the working efficiency of the guide mechanism.

[0082] In some examples, each guide roller 200 corresponds to two guide roller assemblies 300, with one guide roller assembly located at the end of the guide roller 200 away from the frame 100 and the other located at the end of the guide roller 200 closer to the frame 100.

[0083] For example, such as Figure 6As shown, the frame 100 can be elongated and fixed to the ground by the column 600. Eight guide rollers 200 are evenly distributed on both sides of the frame 100, four on each side. The traction slivers 510′ are arranged on both sides of the frame 100 accordingly. Each guide roller 200 corresponds to two guide roller pressure roller assemblies 300. One guide roller pressure roller assembly 300 is located at the end of the guide roller 200 away from the frame 100, and the other guide roller pressure roller assembly 300 is located at the end of the guide roller 200 close to the frame 100, which reduces the possibility of entanglement of the slivers 510′ on the same guide roller 200.

[0084] This application also provides a method for controlling a guide strip mechanism, which can be used in a drawing machine. Figure 7 A schematic flowchart illustrating a guide bar mechanism control method provided in this application embodiment, as shown below. Figure 7 As shown, the above-mentioned guide bar mechanism control method includes:

[0085] S110, acquire multiple consecutive frames of images of the sliver being pulled.

[0086] For example, since cotton swabs are relatively thin and are greatly affected by the force applied, their shape changes are subtle and frequent during the traction process. Therefore, high-magnification, high-frame-rate industrial-grade camera equipment can be selected to capture continuous multi-frame images of the cotton swab during traction.

[0087] It should be noted that since the guide bar mechanism usually pulls multiple cotton strips at the same time, each cotton strip has a different shape due to slight differences in structure, as well as differences in the magnitude and direction of the force. Therefore, it is possible to obtain multiple consecutive frames of images for each cotton strip.

[0088] In addition, since tampons are basically stressed at both ends, there will be a sag point in the middle, which is the center of gravity of the tampon. The area near this point best reflects the shape changes of the tampon. Therefore, when acquiring the corresponding images, the images should be collected with the sag point as the center to cover as many tampon shapes as possible.

[0089] S120, based on multiple consecutive frames of images, plots the morphological curve of the tampon in each frame.

[0090] For example, the shape curve of the tampon can be obtained from each frame of the image. This can be done by image edge recognition. The edge of the tampon is different in color and shape from other parts of the image, so the shape curve of the tampon can be drawn from the image.

[0091] S130, establish a coordinate system for the morphological curve, and calculate the area of ​​the shape enclosed by the morphological curve and the coordinate axis in each frame of the image.

[0092] For example, a coordinate system is established for the shape curve of the tampon in each frame of the image. For example, Figure 8 A schematic coordinate diagram of a tampon morphology curve provided for an embodiment of this application, such as... Figure 8 As shown:

[0093] Establish x and y coordinate axes. The x-axis can be aligned with the traction direction of the cotton swab, i.e., parallel to the ground. When plotting the x-axis in the image, it intersects the cotton swab shape curve at two points, namely A and B in the figure. Points A and B have a certain span to better reflect the shape of the cotton swab.

[0094] After establishing a coordinate system based on the morphological curves, the area enclosed by the morphological curves and the coordinate axes in each frame of the image is calculated, i.e. Figure 8 The area S of the figure enclosed by points A and B and the cotton strip shape curve can be obtained by taking a definite integral over the section of the cotton strip shape curve between A and B.

[0095] S140, if the area of ​​the graphic is always less than a preset threshold in a preset number of consecutive frames, control the guide roller assembly to move the guide roller assembly away from the guide roller.

[0096] It should be noted that a tampon breaks when the tension it experiences reaches its limit. When the tampon is at its limit, it will be in a "taut" state, and the sag point will rise. Thus, as... Figure 8 The area enclosed by the sliver curve and the x-axis will decrease, and as the tension reaches its limit, the area will continue to decrease until it is almost parallel to the x-axis.

[0097] In the guide strip mechanism proposed in this application embodiment, the shape of the cotton swab continuously fluctuates, and the area of ​​the graphic enclosed by the aforementioned shape curve and the coordinate axis continuously increases or decreases. Therefore, a preset threshold can be designed. Within the normal operating range, the area of ​​the aforementioned graphic will not be less than this threshold, meaning the cotton swab will not be subjected to such great tension that it remains in a relatively "tight" stretched state. However, if the area of ​​the aforementioned graphic is less than the preset threshold for several consecutive frames, it indicates that the tension on the current cotton swab is continuously increasing, posing a risk of breakage. Therefore, the guide strip pressure roller assembly can be controlled to move away from the guide strip roller to reduce the tension on the cotton swab and prevent breakage.

[0098] For example, it can be as described above. Figure 2 , Figure 3In the embodiment shown, when the area of ​​the above-mentioned graphic is less than a preset threshold for several consecutive frames, the controller 800 (e.g., PLC, microcontroller) sends a control command to the power source 900. The drive component 400 (e.g., cylinder) lifts the guide roller assembly 300, thereby moving the roller body 310 away from the surface of the guide roller 200. The operator can adjust the rolling speed of the guide roller 200 or the traction force on the cotton strip 510' to prevent the cotton strip 510' from breaking.

[0099] In summary, this application proposes a guide strip mechanism control method. By acquiring the shape curve of the traction sliver in multiple consecutive frames of images, and establishing a coordinate system based on the shape curve, the method can grasp the change in tension on the sliver from the perspective of the change in the area of ​​the graphic. This method can express the subtle change in tension, a physical quantity that is difficult to measure directly, using the intuitive change in area. This allows for an accurate judgment of the tension on the sliver. When the area change indicates that the tension on the sliver is too high, the guide strip pressure roller assembly is raised to prevent the sliver from breaking.

[0100] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0101] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0102] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A guide strip mechanism for a drawing frame, characterized in that, The guide bar mechanism includes: frame; A guide roller, disposed on the frame, is used to pull the sliver; A guide roller assembly is disposed on the frame, and the guide roller assembly abuts against the surface of the guide roller to stabilize the sliver. The guide roller assembly includes: The roller head abuts against the surface of the guide roller. Mounting rods are installed on the frame. The support arm has one end rotatably connected to the mounting rod and the other end rotatably connected to the roller head. The pressure roller arm is fixedly connected to the support arm, and the pressure roller arm is used to drive the support arm to lift. A drive element for pushing the pressure roller arm to drive the roller head away from the surface of the guide roller; A controller is used to receive an inspection signal and control a power source to provide power to the drive unit so that the drive unit can operate. The inspection signal is related to the shape of the sliver during traction. The method for determining the inspection signal includes: Acquire consecutive multi-frame images of the cotton sliver during traction; Based on the continuous multi-frame images, the morphological curve of the tampon in each frame image is plotted; Establish a coordinate system for the morphological curve, and calculate the area of ​​the shape enclosed by the morphological curve and the coordinate axis in each frame of the image; If the area of ​​the graphic is always less than a preset threshold in a preset number of consecutive frames, the inspection signal is generated so that the controller controls the drive to push the pressure roller arm, thereby moving the roller head away from the surface of the guide roller.

2. The guide bar mechanism according to claim 1, characterized in that, The guide roller assembly also includes: A cotton guide ring is disposed on the mounting rod and is used to sleeve the cotton strip.

3. The guide bar mechanism according to claim 2, characterized in that, The driving component includes: A cylinder, used to push the pressure roller arm when an air source is input, so as to move the roller head away from the surface of the guide roller; or, An electric cylinder is used to push the pressure roller arm when powered to move the roller head away from the surface of the guide roller.

4. The guide bar mechanism according to claim 3, characterized in that, The driving component also includes: A mounting base is fixedly connected to the mounting rod and is used to fix the cylinder or electric cylinder.

5. The guide bar mechanism according to claim 3, characterized in that, The mounting rod is a hollow structure and is used to pass through a power cable conduit. The power cable conduit is used to transmit the input air source to the cylinder or the input power source to the electric cylinder.

6. The guide bar mechanism according to claim 1, characterized in that, Also includes: A drive belt is disposed within the frame, and the drive belt is used to drive the guide roller to rotate.

7. The guide bar mechanism according to any one of claims 1 to 6, characterized in that, There are multiple guide rollers, and the multiple guide rollers are distributed on both sides of the frame along the traction direction of the sliver; Each of the guide rollers corresponds to at least one guide roller assembly.

8. A control method for a guide bar mechanism, characterized in that, The guide mechanism is any one of 1 to 7, used in a drawing frame, and the control method includes: Acquire consecutive multi-frame images of the cotton sliver during traction; Based on the continuous multi-frame images, the morphological curve of the tampon in each frame image is plotted; Establish a coordinate system for the morphological curve, and calculate the area of ​​the shape enclosed by the morphological curve and the coordinate axis in each frame of the image; If the area of ​​the graphic is always less than a preset threshold in a preset number of consecutive frames, the guide roller assembly is controlled to move away from the guide roller.

Images