Device for preventing bobbin yarn from unwinding and knocking over and automatic winder
By installing a pipe yarn anti-winding and rewinding device on the pre-clearer of the automatic winder, the pipe yarn anti-winding and rewinding parts made of rectangular sheets capture the yarn removal and yarn disorganization, which solves the problem of yarn removal during high-speed winding, and improves production efficiency and the inherent quality of the barrel.
Patent Information
- Application Number
- CN202422402209.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing automatic winders cannot effectively prevent the yarn from falling off during high-speed winding, resulting in reduced production efficiency and reduced intrinsic mass of the barrel. The existing devices have problems such as high gas consumption, high failure rate or yarn damage.
A pipe yarn anti-winding and rewinding device is designed, including a pre-cleaner and a pipe yarn anti-winding and rewinding components. A dense short comb teeth are provided on the yarn path using the pipe yarn unwinding and rewinding components made of a rectangular piece. It is fixed to the pre-cleaner by screws and bolts. The comb teeth tip of the arc-shaped section points downward to capture the messy yarn when the yarn is decycled.
Effectively prevents various pipe yarns from being out of ring and layering yarn, avoids yarn damage, has a simple structure, low cost, is easy to install, and improves production efficiency and the inner quality of the barrel.
Smart Images
Figure CN223188673U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of textile machinery manufacturing, and relates to the improvement of an automatic winding machine, in particular to a device for preventing bobbin yarn from unwinding and unwinding, and the automatic winding machine. Background Art
[0002] Automatic winders typically achieve high production and efficiency at speeds exceeding 1000 m / min. During high-speed winding, bobbin unwinding can cause yarn unwinding due to issues with the yarn material and the spinning frame's inherent process. Currently, no automatic winder can fully control this phenomenon. For example, Murata's automatic winders, while equipped with an automated bobbin balloon tracker, cannot completely control the unwinding caused by high-speed unwinding. Unwinding increases the number of knotting cycles in the automatic winder, reducing production efficiency and, more seriously, degrading the inherent quality of the bobbins. Large unwinding loops are first wound onto the bobbin being produced, before the electronic yarn clearer begins cutting. The upper suction nozzle often fails to remove the multiple unwinding loops, creating a chaotic yarn pattern. Instead, it simultaneously removes a single yarn, which is then detected by the electronic yarn clearer and effectively knotted, thereby integrating the chaotic unwinding yarn into the bobbin. How to stop the yarn from being unhooked from the bobbin is a question of great concern in this field. Murata Corporation of Japan uses a pointed triangular iron piece to stop the unhooked yarn from hanging on the balloon rupture ring. Although it has a certain effect on larger unhooked yarns, medium and small unhooked yarns will escape from this device. The Italian Savio Bona series winding machine uses a cylinder installed on the electric cleaning panel to drive a rod-shaped unhooked yarn blocking device, which has achieved good results. However, there are problems with gas consumption and high failure rate, and it cannot completely prevent the phenomenon of the bobbin yarn being unhooked onto the bobbin. The applicant has also tried the anti-unhooked triangular iron piece on the VCRO-E automatic winding machine, and it has a certain effect. However, due to the large balloon when the bobbin yarn is unwound, the yarn collides violently with the sharp corners of the anti-unhooked triangular iron piece during unwinding, causing the CV value of the fine yarn to deteriorate, and the short and long details to increase significantly. After the triangular anti-unhooked device is removed, the cutting defect level is normal.
[0003] The pre-yarn clearer in the automatic winding machine is usually a mechanical yarn clearer, which is located below the tension disk. The yarn passes through the gap formed by two thin plates. The gap for the yarn to pass through is much larger than the yarn diameter. Therefore, the pre-yarn clearer does not actually have the task of clearing yarn defects, but it can prevent impurities such as yarn loops falling off the bobbin and flying fibers adhering to the yarn from entering the subsequent yarn path.
[0004] How to design a bobbin unwinding prevention device and an automatic winder, whereby a bobbin unwinding prevention component is installed on the pre-yarn clearer to prevent various bobbin unwinding and disordered yarns without damaging the surface appearance or strength of the original yarn, and the device has a simple structure, is easy to manufacture, and can be easily installed on the existing pre-yarn clearer, is a technical problem that needs to be solved urgently in this field. Utility Model Content
[0005] The utility model aims to solve the problems and shortcomings of the prior art and provides a device for preventing bobbin yarn from unwinding and unwinding and an automatic winding machine, which can prevent various bobbin yarns from unwinding and causing disordered yarns without damaging the surface appearance and strength of the original yarn. The utility model has a simple structure and is easy to manufacture and manufacture, and is convenient for installation on an existing pre-yarn clearer.
[0006] The purpose of this utility model is achieved through the following technical solutions:
[0007] 14. The anti-coil yarn unwinding and unlooping device as claimed in claim 13, wherein the pre-yarn clearing device comprises a left yarn clearing plate and a right yarn clearing plate, wherein the left yarn clearing plate and the right yarn clearing plate form a yarn clearing gap with an adjustable spacing, and at least one screw hole is provided on the left yarn clearing plate for being mounted on the mounting bracket by screws. The pre-yarn clearing device is characterized in that the pre-yarn clearing device is made of a rectangular plate, one end of which is flat and the other end is a bent arc segment. A short comb tooth is provided on the edge of the end of the arc segment, and at least two long mounting holes are provided laterally on the anti-coil yarn unwinding and unlooping device, and bolt holes are correspondingly provided on the left yarn clearing plate, and the anti-coil yarn unwinding and unlooping device is fixed to the bottom surface of the left yarn clearing plate by bolts, so that the raised surface of the arc segment is close to the yarn clearing gap, and the tips of the short comb teeth on the arc segment point to the lower left.
[0008] Improvement on the above technical solution: the arc section of the bobbin unwinding and unwinding preventing component is semicircular, and the raised surface of the arc section is a smooth surface.
[0009] Further improvement to the above technical solution: a scale is correspondingly provided on the front side surface of the left yarn clearing plate, and a scale mark is provided on the anti-tube yarn unwinding and unlooping component for accurately adjusting the distance between the arc-shaped end raised surface of the anti-tube yarn unwinding and unlooping component and the yarn clearing gap.
[0010] Further improvement of the above technical solution: the total length of the anti-unwinding component of the bobbin yarn is 20-25 mm, the width is 15-20 mm, the thickness is 0.7-1 mm, the length of the arc segment is 3-4 mm, the height of the short comb teeth is 0.8-1.2 mm, and the number of teeth of the short comb teeth is 20-30.
[0011] Further improvement to the above technical solution: the bobbin unwinding and unwinding prevention component is an integrated structure punched from a stainless steel plate.
[0012] Further improvement to the above technical solution: the anti-cop unwinding and unwinding component is an integrated structure made of engineering plastic injection molding.
[0013] An automatic winding machine includes a single spindle for the automatic winding machine, and is characterized in that a mounting bracket is provided on the yarn guide path of the single spindle of the automatic winding machine, and the above-mentioned anti-cop yarn unwinding and unlooping device is installed on the mounting bracket.
[0014] Compared with the prior art, the present invention has the following advantages and positive effects:
[0015] 1. The shape and installation position of the anti-cop yarn unwinding and unlooping component in the utility model are reasonably designed. When the cop yarn is wound normally, the yarn does not come into contact with the tips of the short comb teeth of the anti-cop yarn unwinding and unlooping component, so that the yarn strands are not damaged by the device.
[0016] 2. The utility model adopts dense short comb teeth for preventing the unwinding of the bobbin yarn. The tooth tips of the short comb teeth can not only catch the large unwound yarns, but also effectively hook the medium and small unwound yarns, playing a positive blocking role.
[0017] 3. The anti-cop yarn unwinding and unwinding component of the utility model has a simple structure, is easy to manufacture and process, has a low cost, is easy to install and use on the existing pre-yarn clearer, and is conducive to promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a three-dimensional diagram of the utility model of a bobbin unwinding and unwinding prevention device in use;
[0019] Figure 2 This is a three-dimensional diagram of a bobbin unwinding and undoing prevention component in a bobbin unwinding and undoing prevention device of the utility model;
[0020] Figure 3 This is a schematic diagram of a normal yarn guiding device for preventing bobbin unwinding and unwinding according to the present invention;
[0021] Figure 4 The utility model is a schematic diagram of a bobbin yarn unwinding and unravelling prevention device in which a bobbin yarn unwinding and unravelling prevention component hooks the unravelling when the yarn is guided.
[0022] In the figure: 1. Pre-yarn clearer; 2. Component to prevent bobbin yarn from unwinding and undocking; 2.1. Short comb teeth; 2.2. Long mounting hole; 3. Yarn; 3.1. Undocking and disordered yarn. DETAILED DESCRIPTION
[0023] The present invention will be described in further detail below with reference to the accompanying drawings.
[0024] See also Figures 1-4The present invention provides an embodiment of a device for preventing bobbin yarn from unwinding and unlooping, comprising a pre-yarn clearer 1 and a bobbin yarn unwinding and unlooping prevention component 2. The pre-yarn clearer 1 comprises a left yarn clearing plate and a right yarn clearing plate, wherein a yarn clearing gap with an adjustable spacing is formed between the left and right yarn clearing plates. At least one screw hole is provided on the left yarn clearing plate for mounting on a mounting bracket via screws. The bobbin yarn unwinding and unlooping prevention component 2 is made of a rectangular sheet, one end of which is flat and the other end is a bent arc segment. Short comb teeth 2.1 are provided at the edge of the end of the arc segment. At least two long mounting holes 2.2 are provided transversely on the bobbin yarn unwinding and unlooping prevention component 2, and corresponding bolt holes are provided on the left yarn clearing plate. The bobbin yarn unwinding and unlooping prevention component 2 is fixed to the bottom surface of the left yarn clearing plate by bolts, so that the raised surface of the arc segment is close to the yarn clearing gap and the tips of the short comb teeth 2.1 on the arc segment point to the lower left.
[0025] Furthermore, the arc section of the bobbin unwinding prevention component 2 is semicircular, and the raised surface of the arc section is a smooth surface.
[0026] Furthermore, a scale is correspondingly provided on the front side surface of the above-mentioned left yarn clearing plate, and a scale mark is provided on the anti-tube yarn unwinding and unlooping component 2 for accurately adjusting the distance between the arc-shaped end raised surface of the anti-tube yarn unwinding and unlooping component 2 and the yarn clearing gap.
[0027] Preferably, the total length of the anti-spool yarn unwinding component 2 is 20-25 mm, the width is 15-20 mm, the thickness is 0.7-1 mm, the length of the arc segment is 3-4 mm, the height of the short comb teeth 2.1 is 0.8-1.2 mm, and the number of teeth of the short comb teeth 2.1 is 20-30.
[0028] Furthermore, the bobbin unwinding prevention component 2 is an integrated structure formed by stamping and bending a stainless steel plate.
[0029] Furthermore, the bobbin unwinding prevention component 2 is an integral structure formed by injection molding of engineering plastics.
[0030] During actual assembly, the anti-cop yarn unwinding component 2 of the present invention is installed on the originally reserved screw hole of the left yarn clearing plate of the pre-yarn clearer 1 through the long mounting hole 2.2, and is installed with M3 screws. The opening distance can be adjusted arbitrarily. The installation is based on the fact that a single yarn 3 does not collide with the tooth tip of the short comb teeth 2.1 when unwinding.
[0031] An embodiment of an automatic winding machine of the utility model comprises a single spindle of the automatic winding machine, a mounting bracket is provided on a yarn guide path of the single spindle of the automatic winding machine, and the above-mentioned anti-cop yarn unwinding and unlooping device is installed on the mounting bracket.
[0032] In conjunction with the accompanying drawings, the working principle and usage of the utility model are explained as follows: the anti-unwinding and unlooping component 2 of the yarn bobbin is installed on the left yarn clearing plate of the pre-yarn clearer 1, and is located below the pre-yarn clearer 1. The yarn 3 moves at high speed from bottom to top, and the yarn 3 runs along the raised semicircular arc surface. The anti-unwinding and unlooping component 2 of the yarn bobbin can capture the unlooped yarn in advance to prevent the unlooped yarn from being wound into the bobbin yarn. Figure 3 This is the state of a normal single yarn 3 passing through the pre-yarn clearer 1. The yarn 3 will not contact the tips of the short comb teeth 2.1 of the anti-cop yarn unwinding and unlooping component 2. When the cop yarn has large, medium or small unloops, the unlooped yarn 3.1 will be caught by the anti-cop yarn unwinding and unlooping component 2 (such as Figure 4 As shown, the densely packed, short comb teeth 2.1 instantly hook the stray yarn 3.1, causing the winding machine's single spindle to stop winding and the bad yarn to be sucked away and re-knotted. When the electronic yarn clearer detects a yarn shortage, the knotting cycle is triggered. The right clearing plate of the pre-yarn clearer 1 opens, and the lower suction nozzle draws in the stray yarn 3.1 from the bobbin. This prevents the stray yarn from entering the tension disc, tangling with it, and entering the bobbin, effectively ensuring the inherent quality of the bobbin.
[0033] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.
Claims
1. A device for preventing bobbin yarn from unwinding and unhooking, comprising a pre-yarn clearer and a bobbin yarn unwinding and unhooking prevention component, wherein the pre-yarn clearer comprises a left yarn clearing plate and a right yarn clearing plate, wherein a yarn clearing gap with an adjustable spacing is formed between the left yarn clearing plate and the right yarn clearing plate, and wherein at least one screw hole is provided on the left yarn clearing plate for being mounted on a mounting bracket by screws, wherein: The anti-tube yarn unwinding and unhooking component is made of a rectangular sheet, one end of which is a flat plate and the other end is a bent arc segment. Short comb teeth are provided on the edge of the end of the arc segment. At least two long mounting holes are provided laterally on the anti-tube yarn unwinding and unhooking component, and corresponding bolt holes are provided on the left yarn clearing plate. The anti-tube yarn unwinding and unhooking component is fixed to the bottom surface of the left yarn clearing plate with bolts, so that the raised surface of the arc segment is close to the yarn clearing gap, and the tip of the short comb teeth on the arc segment points to the lower left.
2. The device for preventing bobbin unwinding according to claim 1, characterized in that: The arc section of the bobbin unwinding prevention component is semicircular, and the raised surface of the arc section is a smooth surface.
3. The device for preventing bobbin unwinding according to claim 1 or 2, characterized in that: A scale is provided on the front side of the left yarn clearing plate, and a scale mark is correspondingly provided on the anti-tube yarn unwinding and unlooping component for accurately adjusting the distance between the arc-shaped end raised surface of the anti-tube yarn unwinding and unlooping component and the yarn clearing gap.
4. The device for preventing bobbin unwinding according to claim 1 or 2, characterized in that: The total length of the anti-spool yarn unwinding component is 20-25 mm, the width is 15-20 mm, the thickness is 0.7-1 mm, the length of the arc segment is 3-4 mm, the height of the short comb teeth is 0.8-1.2 mm, and the number of teeth of the short comb teeth is 20-30.
5. The device for preventing bobbin unwinding and unwinding according to claim 3, characterized in that: The total length of the anti-spool yarn unwinding component is 20-25 mm, the width is 15-20 mm, the thickness is 0.7-1 mm, the length of the arc segment is 3-4 mm, the height of the short comb teeth is 0.8-1.2 mm, and the number of teeth of the short comb teeth is 20-30.
6. The device for preventing bobbin unwinding according to claim 1 or 2, characterized in that: The bobbin unwinding and knock-off preventing component is an integrated structure formed by stamping and bending a stainless steel plate.
7. The device for preventing bobbin unwinding according to claim 3, characterized in that: The bobbin unwinding and knock-over preventing component is an integrated structure formed by stamping and bending a stainless steel plate.
8. The device for preventing bobbin unwinding according to claim 1 or 2, characterized in that: The bobbin unwinding and knock-off preventing component is an integral structure formed by injection molding of engineering plastics.
9. The device for preventing bobbin unwinding according to claim 5, characterized in that: The bobbin unwinding and knock-off preventing component is an integral structure formed by injection molding of engineering plastics.
10. An automatic winding machine, comprising a single spindle of the automatic winding machine, characterized in that: A mounting bracket is provided on the yarn guide path of the single spindle of the automatic winding machine, and the anti-cop yarn unwinding and unlooping device according to any one of claims 1 to 9 is installed on the mounting bracket.