A yarn check structure

Abstract

This utility model relates to the field of textile machinery technology, specifically to a yarn check structure, comprising: a mounting plate and at least one check part disposed at the upper end of the mounting plate. The check part includes: at least one first bracket; a slider slidably connected to the first bracket; a pressure cylinder rotatably connected to the slider; a pressure block fixedly disposed at the end of the slider's sliding path; and an elastic mechanism for generating a driving force on the slider after the yarn breaks. This utility model, by creating air grooves on the surface of the pressure cylinder, can work with a negative pressure component to adsorb the yarn onto the pressure cylinder surface. Once the yarn breaks, the yarn loses its downward pressure on the pressure cylinder and vibrates violently. However, due to the negative pressure, the yarn is adsorbed and cannot detach from the pressure cylinder surface. Under the action of the elastic mechanism, the slider drives the pressure cylinder to move to fit against the pressure block, thereby clamping the yarn and effectively improving the success rate of check.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to a yarn anti-return structure. Background Technology

[0002] In yarn conveying or winding equipment, anti-rebound components must be installed to prevent the yarn from springing back or tangling after it breaks, thus facilitating the rewinding of the yarn and pulling it back onto the conveyor roller or winding roller.

[0003] A search revealed a Chinese utility model patent with authorization announcement number CN218809629U, which discloses a yarn anti-rebound component. According to its description, the yarn passes around the pressure cylinder during the conveying process, and the yarn presses the pressure cylinder downward, causing the slide rod to abut against the bottom surface of the slide hole. When the yarn breaks, under the combined action of the spring and the magnet, the pressure cylinder moves towards the magnet until the pressure cylinder presses the yarn tightly against the pressure block, thereby clamping the yarn and preventing it from rebounding.

[0004] However, the above technical solution has the following drawbacks: at the moment the yarn breaks, the yarn will vibrate violently, which will easily deviate from the outer circumference of the pressure cylinder, causing the subsequent pressure cylinder to be unable to cooperate with the pressure block to clamp the yarn, thus resulting in a high clamping failure rate. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a yarn check structure to solve the technical problem that existing yarn check structures cannot accurately clamp and limit the yarn after it breaks.

[0006] To achieve the above objectives, this utility model provides a yarn check structure, comprising:

[0007] A mounting plate and at least one check valve located at the upper end of the mounting plate, the check valve comprising:

[0008] At least one first stent;

[0009] A slider that is slidably connected to the first bracket;

[0010] The pressure cylinder is rotatably connected to the slider;

[0011] A pressure block fixedly disposed at the end of the sliding path of the slider;

[0012] An elastic mechanism is used to generate a driving force on the slider after the yarn breaks, so that the pressure cylinder moves with the slider to fit against the pressure block, thereby clamping the yarn;

[0013] The check valve also includes:

[0014] The exhaust assembly has an exhaust end that is rotatably connected to a sealed chamber inside the pressure cylinder. Multiple air grooves are provided on the outer circumferential surface of the pressure cylinder that connect to the sealed chamber. During operation, the exhaust assembly extracts air from the sealed chamber to generate a negative pressure at the air grooves that is sufficient to attract the yarn to the outer circumferential surface of the pressure cylinder.

[0015] As a preferred technical solution of this utility model, the surface of the first bracket is provided with a sliding groove adapted to the slider, and at least one end of the pressure cylinder is provided with an end shaft, which is rotatably engaged with the rotating groove opened on the surface of the slider.

[0016] As a preferred embodiment of this utility model, the elastic mechanism includes a spring with one end connected to the bottom end of the slider, and the other end of the spring being fixedly connected to the surface of the groove.

[0017] As a preferred embodiment of this utility model, the check valve further includes guide wire assemblies symmetrically arranged at both ends of the pressure cylinder along the yarn conveying path. The guide wire assemblies are used to guide the yarn to pass around the circumference of the pressure cylinder in a V-shape.

[0018] As a preferred embodiment of this utility model, the conductor assembly includes:

[0019] A second bracket is fixedly mounted on the upper end of the mounting plate;

[0020] The roller is rotatably connected to the second support.

[0021] As a preferred embodiment of this utility model, the pressure cylinder is fixedly provided with a filter plate at its air groove. The inner diameter of the filter hole of the filter plate is smaller than the outer diameter of the yarn, so as to prevent the exhaust assembly from sucking the broken yarn into the sealed chamber.

[0022] As a preferred embodiment of this utility model, one end of the end shaft is rotatably connected to a rotary joint, and the rotary joint is connected to the exhaust end of the exhaust assembly.

[0023] As a preferred embodiment of this utility model, the pressure cylinder is fixedly provided with an air collecting assembly for concentrating air volume in the sealed chamber, the air collecting assembly comprising:

[0024] A main tube fitted into the end shaft, wherein a rotating hole adapted to a rotary joint is provided at one end of the main tube;

[0025] A branch pipe connected at one end to the main pipe, wherein the branch pipes are multiple and arranged in a ring array about the axis of the main pipe;

[0026] A nozzle, one end of which is connected to the other end of the branch pipe, is in contact with the inner side of the air duct.

[0027] The beneficial effects of this utility model are as follows: By opening air grooves on the surface of the pressure cylinder, this utility model can work with the negative pressure component to adsorb the yarn onto the surface of the pressure cylinder. Once the yarn breaks, the yarn loses the downward pressure on the pressure cylinder and shakes violently. However, due to the negative pressure, the yarn is adsorbed and cannot detach from the surface of the pressure cylinder. Under the action of the elastic mechanism, the slider moves the pressure cylinder to fit against the pressure block, thereby clamping the yarn and effectively improving the success rate of anti-return. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0030] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0031] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the pressure cylinder of this utility model;

[0032] Figure 4 This is a partial three-dimensional structural diagram of the main pipe, branch pipe and nozzle of this utility model.

[0033] The following are marked in the diagram: 1. Mounting plate; 2. First bracket; 3. Slide groove; 4. Slider; 5. Rotary groove; 6. Pressure cylinder; 7. End shaft; 8. Spring; 9. Spring fixing component; 10. Second bracket; 11. Roller; 12. Pressure block; 13. Magnet; 14. Air duct; 15. Sealed chamber; 16. Filter plate; 17. Main pipe; 18. Branch pipe; 19. Nozzle; 20. Rotary joint; 21. Top plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, a yarn check structure includes: a mounting plate 1 and at least one check part disposed at the upper end of the mounting plate 1. The check part includes: at least one first bracket 2; a slider 4 slidably connected to the first bracket 2; a pressure cylinder 6 rotatably connected to the slider 4; a pressure block 12 fixedly disposed at the end of the sliding path of the slider 4; an elastic mechanism for generating a driving force on the slider 4 after the yarn breaks, causing the pressure cylinder 6 to move with the slider 4 to fit against the pressure block 12, thereby clamping the yarn; and an exhaust assembly, the exhaust end of which is rotatably connected to a sealed chamber 15 opened inside the pressure cylinder 6. A plurality of air grooves 14 communicating with the sealed chamber 15 are opened on the outer circumferential surface of the pressure cylinder 6. During operation, the air in the sealed chamber 15 is extracted by the exhaust assembly to generate a negative pressure at the air grooves 14 sufficient to adsorb the yarn onto the outer circumferential surface of the pressure cylinder 6.

[0037] The above technical solution can locate broken yarn by combining negative pressure and clamping, improving the success rate of stopping the yarn breakage. In use, the yarn is first wrapped around the upper end of the pressure cylinder 6 to ensure that the yarn can generate downward pressure during the tensioning and conveying process. This forces the pressure cylinder 6 and the slider 4 to overcome the expansion elastic force of the elastic mechanism, thereby moving the pressure cylinder 6 away from the pressure block 12. Then, the exhaust end of the exhaust component is rotatably connected to the pressure cylinder 6. When the exhaust component is working, it will generate negative pressure at the air groove 14. The negative pressure will attract the yarn to the outer circumference of the pressure cylinder 6. Once the yarn breaks, the yarn loses the downward pressure on the pressure cylinder 6 and shakes. However, due to the negative pressure, the yarn is attracted and cannot detach from the surface of the pressure cylinder 6. Under the action of the elastic mechanism, the slider 4 moves the pressure cylinder 6 to fit against the pressure block 12, thereby clamping the yarn and effectively improving the success rate of stopping the breakage.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, the surface of the first bracket 2 is provided with a groove 3 that is adapted to the slider 4, and at least one end of the pressure cylinder 6 is provided with an end shaft 7, which is rotatably engaged with the rotating groove 5 opened on the surface of the slider 4.

[0039] The above technical solution can connect the slider 4 and the first bracket 2 in a sliding manner. In order to facilitate the disassembly of the slider 4, the first bracket 2 can adopt a modular design. A top plate 21 is bolted to the slide groove 3 to prevent the slider 4 from falling out of the slide groove 3. The pressure block 12 can also be bolted to the top plate 21.

[0040] like Figure 1 and Figure 2 As shown, in this embodiment, the elastic mechanism includes a spring 8 with one end connected to the bottom end of the slider 4, and the other end of the spring 8 is fixedly connected to the surface of the slide groove 3; the spring 8 is installed between the slide groove 3 and the slider 4 through a spring fixing member 9. The spring fixing member 9 includes annular members fixedly disposed at both ends of the spring 8, and guide posts disposed on the opposite surfaces of the slide groove 3 and the slider 4, with the annular members sleeved on the guide posts.

[0041] The above technical solution can push the slider 4 upward through the spring 8, and then drive the pressure cylinder 6, which is rotatably connected to it, to move to fit with the pressure block 12, thereby clamping the yarn. In order to further improve the clamping speed, a magnet 13 can also be set at the lower end of the pressure block 12. At the same time, the pressure cylinder 6 is made of a magnetic metal material such as iron. When the yarn breaks, the pressure cylinder 6 can be moved to fit with the pressure block 12 more quickly through magnetism and elasticity. This part is the prior art and will not be described in detail.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the check valve also includes a guide wire assembly symmetrically arranged at both ends of the pressure cylinder 6 along the yarn feeding path. The guide wire assembly is used to guide the yarn to pass around the circumferential surface of the pressure cylinder 6 in a V-shape. Specifically, the guide wire assembly includes: a second bracket 10 fixedly disposed at the upper end of the mounting plate 1; and a roller 11 rotatably connected to the second bracket 10.

[0043] The above technical solution can ensure that the yarn makes full contact with the surface of the pressure cylinder 6 as much as possible, thereby improving the success rate of recovery.

[0044] like Figure 3 As shown, in this embodiment, a filter plate 16 is fixedly installed on the air groove 14 of the pressure cylinder 6, and the inner diameter of the filter hole of the filter plate 16 is smaller than the outer diameter of the yarn.

[0045] The above technical solution can prevent the exhaust assembly from sucking the broken yarn into the sealed chamber 15, thus preventing blockage of the sealed chamber 15 inside the pressure cylinder 6.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, one end of the end shaft 7 is rotatably connected to a rotary joint 20, and the rotary joint 20 is connected to the exhaust end of the exhaust assembly.

[0047] The above technical solution can ensure the dynamic sealing between the pressure cylinder 6 and the exhaust end of the exhaust assembly, and ensure that the pressure cylinder 6 can also seal well with the exhaust end of the exhaust assembly when rotating.

[0048] like Figure 3 and Figure 4 As shown, in this embodiment, the pressure cylinder 6 is fixedly provided with an air collecting assembly for concentrating air volume in the sealed chamber 15. The air collecting assembly includes: a main pipe 17 sleeved in the end shaft 7, with a rotating hole adapted to the rotary joint 20 at one end of the main pipe 17; a branch pipe 18 connected to the main pipe 17 at one end, the branch pipe 18 having multiple branches arranged in a ring array about the axis of the main pipe 17; and a nozzle 19 connected to the other end of the branch pipe 18 at one end, the nozzle 19 being in contact with the inner side of the air duct 14.

[0049] The above technical solution can further increase the negative pressure. By setting an air collection assembly consisting of a main pipe 17, a branch pipe 18 and a nozzle 19 in the pressure cylinder 6, the internal space of the sealed chamber 15 can be reduced in a disguised way, making the air passage narrower. Under the condition that the output power of the exhaust assembly remains unchanged, the wind speed will increase, thereby generating a stronger suction force. The exhaust assembly can be a vacuum pump.

[0050] Working principle: When using, refer to... Figure 2 First, the yarn is passed through the roller 11 and around the upper end of the pressure cylinder 6 in sequence, so that the yarn forms an inverted V-shaped conveying path. This ensures that the yarn can generate downward pressure during the tensioning and conveying process, thereby forcing the pressure cylinder 6 and the slider 4 to overcome the expansion elastic force of the spring 8, and thus driving the pressure cylinder 6 away from the pressure block 12. Then, the exhaust end of the exhaust assembly is rotatably connected to the rotary joint 20 at one end of the pressure cylinder 6. When the exhaust assembly is working, it will generate negative pressure at the air groove 14 through the channel formed by the rotary joint 20, the main pipe 17, the branch pipe 18 and the nozzle 19. The negative pressure will adsorb the yarn on the outer circumference of the pressure cylinder 6.

[0051] Once the yarn breaks, it loses its downward pressure on the pressure cylinder 6 and shakes. However, due to the negative pressure, the yarn is attracted and cannot detach from the surface of the pressure cylinder 6. Under the action of the elastic mechanism, the slider 4 drives the pressure cylinder 6 to fit against the pressure block 12, thereby clamping the yarn and effectively improving the success rate of anti-return.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0053] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A yarn check structure, comprising: The mounting plate (1) and at least one check valve located at the upper end of the mounting plate (1), the check valve comprising: At least one first support (2); The slider (4) is slidably connected to the first bracket (2); Pressure cylinder (6) rotatably connected to the slider (4); A pressure block (12) is fixedly installed at the end of the sliding path of the slider (4); An elastic mechanism is used to generate a driving force on the slider (4) after the yarn breaks, so that the pressure cylinder (6) moves with the slider (4) to fit against the pressure block (12) to clamp the yarn; The feature is that the check valve further includes: The exhaust assembly has its exhaust end connected to a sealed chamber (15) inside the pressure cylinder (6) in a rotatable manner. Multiple air grooves (14) are provided on the outer circumferential surface of the pressure cylinder (6) to connect the sealed chamber (15). During operation, the exhaust assembly extracts the air from the sealed chamber (15) to generate a negative pressure at the air grooves (14) sufficient to attract the yarn to the outer circumferential surface of the pressure cylinder (6).

2. The yarn check structure according to claim 1, characterized in that, The surface of the first bracket (2) is provided with a groove (3) that is compatible with the slider (4), and at least one end of the pressure cylinder (6) is provided with an end shaft (7), which is rotatably engaged with the rotating groove (5) on the surface of the slider (4).

3. The yarn check structure according to claim 2, characterized in that, The elastic mechanism includes a spring (8) with one end connected to the bottom end of the slider (4), and the other end of the spring (8) is fixedly connected to the surface of the groove (3).

4. The yarn check structure according to claim 2, characterized in that, The check valve also includes guide wire assemblies symmetrically arranged at both ends of the pressure cylinder (6) along the yarn conveying path. The guide wire assemblies are used to guide the yarn to pass around the circumference of the pressure cylinder (6) in a V-shape.

5. The yarn check structure according to claim 4, characterized in that, The conductor assembly includes: A second bracket (10) is fixedly installed at the upper end of the mounting plate (1). Roller (11) rotatably connected to the second support (10).

6. The yarn check structure according to claim 2, characterized in that, The pressure cylinder (6) has a filter plate (16) fixedly installed at its air groove (14). The inner diameter of the filter hole of the filter plate (16) is smaller than the outer diameter of the yarn, so as to prevent the exhaust assembly from sucking the broken yarn into the sealed chamber (15).

7. The yarn check structure according to any one of claims 2-6, characterized in that, One end of the end shaft (7) is rotatably connected to a rotary joint (20), which is connected to the exhaust end of the exhaust assembly.

8. The yarn check structure according to claim 7, characterized in that, The pressure cylinder (6) is fixedly equipped with an air collecting assembly for concentrating air volume in the sealed chamber (15), the air collecting assembly comprising: A main tube (17) is fitted into the end shaft (7), and the main tube (17) has a rotating hole at one end that is compatible with the rotary joint (20); A branch pipe (18) connected at one end to the main pipe (17), the branch pipe (18) having multiple branches arranged in a ring array about the axis of the main pipe (17); A nozzle (19) is connected at one end to the other end of the branch pipe (18), and the nozzle (19) is in contact with the inner side of the air duct (14).

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