Quick dismounting device and method for roller bearing of spinning frame

Abstract

The invention relates to a quick dismounting device and method for a roller bearing of a spinning frame, and belongs to the technical field of textile machinery maintenance equipment. The device comprises a positioning assembly, a clamping assembly and a driving assembly. The positioning assembly is matched with a spinning frame roller bearing seat, the clamping assembly is provided with a clamping jaw matched with the outer edge of a bearing, and the driving assembly drives the clamping assembly to move axially through lead screw transmission. Tension is exerted by rotating the handle, so that the bearing is quickly disassembled, the disassembling time is shortened from 15 minutes to 1 minute, damage to the edge of the bearing and damage to a roller shaft head are avoided, and the problems of dangerous operation and low efficiency in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of textile machinery maintenance equipment technology, and in particular to a quick disassembly device and method for a spinning frame roller bearing. Background Technology

[0002] In textile industry maintenance, the roller bearings of the Rieter K42 spinning frame require frequent replacement. Because the outer ring of this bearing has only a very narrow protruding edge, the common practice on-site is to disassemble it using a "pry bar + hammer": the tip of the pry bar is pressed against the bearing edge, and the bearing is repeatedly struck with a hammer to remove it. This method has significant drawbacks: the small contact area and concentrated impact force easily cause the bearing outer ring to crack or chip; once the edge is damaged, grinding with a grinding wheel is necessary, drastically increasing the number of steps and time required; both striking and grinding involve flying debris, sparks, and slippage risks, making it difficult to guarantee the safety of personnel and equipment; on-site statistics show that disassembling a single bearing takes an average of about 15 minutes, seriously affecting the maintenance cycle and production efficiency of the entire spinning frame.

[0003] In response to the prominent issues of "low efficiency, susceptibility to damage, and poor safety" mentioned above, the industry has long called for a dedicated, fast, and non-destructive tooling for disassembling roller bearings. Despite continuous investment in research and development by numerous companies and research institutions, no truly mature solution suitable for the Rieter K42 roller structure has emerged in existing public literature or field applications. Traditional manufacturing, processing, and usage methods have also failed to achieve breakthroughs in structural dimensions, stress distribution, and field operability, leaving this pain point unresolved for a long time. Therefore, there is an urgent need for a new type of rapid disassembly device and method that is compact, easy to operate, protects the bearing and journal, and significantly reduces disassembly time to meet the urgent needs of textile enterprises for efficient and safe maintenance.

[0004] Therefore, it is evident that the existing devices and methods for disassembling roller bearings on spinning machines still have inconveniences and defects in terms of method, manufacturing method, and use, and urgently need further improvement. To solve the problems existing in the disassembly devices and methods for spinning machine roller bearings, relevant manufacturers have spared no effort in seeking solutions, but for a long time, no suitable design has been developed, and general methods and manufacturing methods do not have appropriate methods, manufacturing methods, and structures to solve the above problems. This is clearly a problem that relevant industries urgently want to solve.

[0005] In view of the shortcomings of existing disassembly devices and methods for spinning frame roller bearings, the inventor, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with theoretical application, actively researched and innovated to create a new quick disassembly device and method for spinning frame roller bearings. This new method improves upon existing quick disassembly devices and methods for spinning frame roller bearings, making them more practical. After continuous research, design, and repeated trials and improvements, this invention, with genuine practical value, was finally created. Summary of the Invention

[0006] The main objective of this invention is to overcome the defects of existing quick disassembly devices and methods for spinning machine roller bearings, and to provide a new quick disassembly device and method for spinning machine roller bearings. The technical problem to be solved is that it can be disassembled without knocking, heating, or damaging the bearing and roller shaft, thus making it more practical and having industrial application value.

[0007] Another objective of this invention is to provide a quick disassembly device and method for roller bearings of a spinning machine. The technical problem to be solved is to make it simple in structure, light in weight, easy to carry, and can be operated with one hand in the confined space of the spinning machine, thus making it more suitable for practical use.

[0008] Another objective of this invention is to provide a quick disassembly device and method for roller bearings of spinning machines. The technical problem to be solved is to enable the disassembly operation to be completed within 1 minute by using a screw-driven, labor-saving transmission, thereby significantly improving maintenance efficiency and making it more suitable for practical use.

[0009] Another objective of this invention is to provide a quick disassembly device and method for a spinning machine roller bearing. The technical problem to be solved is to enable it to have both disassembly and assembly functions, which can be used for the quick and non-destructive disassembly of old bearings and for the smooth pressing and installation of new bearings, thus making it more suitable for practical use.

[0010] The present invention provides a quick disassembly tooling for roller bearings of spinning machines, the tooling including a positioning component, a clamping component and a driving component.

[0011] The positioning component is adapted to the bearing housing of the front roller of the spinning process and is used to position the entire tooling at the position of the bearing to be disassembled. Its dimensions are designed based on the bearing inner diameter of 19mm to ensure accurate positioning.

[0012] The clamping component is mounted on the positioning component and can hold the outer edge of the bearing. The shape of the clamping claws of the clamping component matches the outer edge of the bearing, ensuring stable clamping of the bearing during disassembly and preventing slippage.

[0013] The drive assembly includes a lead screw and a rotary handle. The lead screw is threadedly connected to the positioning assembly, with one end connected to the clamping assembly and the other end connected to the rotary handle. When the handle is rotated, the lead screw drives the clamping assembly to move axially, thereby pulling the bearing off the roller.

[0014] When using the tool, install the positioning component on the bearing seat, so that the clamping component locks the outer edge of the bearing. Then turn the handle, and the screw will drive the clamping component to apply a pulling force. The bearing can be easily removed in just one minute.

[0015] The objective of this invention and the technical problem it solves are achieved by the following technical solution. According to the quick disassembly device and method for the roller bearing of a spinning machine proposed in this invention, precise coaxial positioning with the bearing housing is achieved through a positioning component, uniform force is achieved by a clamping component encircling the outer edge of the bearing, and stable axial tension is achieved through a screw-handle force-saving transmission.

[0016] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0017] The aforementioned quick disassembly device and method for the roller bearing of a spinning machine, wherein the positioning component has a positioning step of 3mm-5mm high on its end face, and the positioning step is clearance-fitted with the end face of the bearing seat, with a clearance of 0.05mm-0.15mm, so as to achieve quick positioning and prevent axial movement.

[0018] The objective of this invention and the solution to its technical problem are also achieved by the following technical solution. According to the quick disassembly device and method for the roller bearing of a spinning machine proposed in this invention, the clamping component's claws are made of spring steel, with a hardness of HRC 40–45 after induction hardening and tempering. The central angle of the arc-shaped groove on the inner side of the claw is 80°–100°, and the groove depth is 1.5–1.8 times the thickness of the bearing edge, to ensure stable clamping without damaging the bearing.

[0019] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0020] The aforementioned quick disassembly device and method for the roller bearing of a spinning machine, wherein the screw pitch of the drive assembly is 2mm–3mm, the effective axial travel is 15mm–25mm, and the rotating handle is a foldable lever structure with a lever arm length not less than 5 times the screw diameter, so as to reduce the operating torque and achieve continuous rotation with one hand.

[0021] Compared with the prior art, the present invention has significant advantages and beneficial effects. As can be seen from the above technical solution, in order to achieve the aforementioned objectives, the main technical contents of the present invention are as follows:

[0022] This invention proposes a quick disassembly device and method for roller bearings on spinning frames, characterized by comprising:

[0023] The positioning component is in the form of an annular base. Its inner diameter is coaxial with the outer diameter of the bearing seat of the spinning machine roller and is clearance-fitted. One end of the annular base is provided with an axially protruding positioning step. The end face of the positioning step fits against the end face of the bearing seat to limit the axial position.

[0024] The clamping assembly is slidably disposed inside the annular base and includes at least two radially synchronously adjustable jaws. The inner side of the jaws is provided with an arc-shaped groove that matches the outer edge contour of the bearing. A guide groove is provided between the back of the jaws and the annular base so that the jaws can only slide in a straight line along the axial direction.

[0025] The drive assembly includes a lead screw and a rotating handle. The lead screw is threadedly connected to a threaded through hole coaxially disposed on the annular base. One end of the lead screw is rotatably axially abutted against the holding assembly through a thrust bearing, and the other end is fixedly connected to the rotating handle.

[0026] When the handle is rotated, the lead screw moves axially relative to the annular base and drives the clamping assembly to move axially along the guide groove through the thrust bearing, thereby pulling the bearing out or pressing it in from the roller shaft.

[0027] Preferably, the central angle of the arc-shaped groove on the inner side of the claw is 80°–100°, and the groove depth is 1.5 to 1.8 times the thickness of the bearing edge.

[0028] Preferably, the height of the positioning step is 3mm–5mm, and the clearance between the positioning step and the bearing seat end face is 0.05mm–0.15mm.

[0029] Preferably, the lead screw has a pitch of 2mm–3mm and an effective axial travel of 15mm–25mm.

[0030] Preferably, the guide groove is a dovetail groove structure, which is set on the inner wall of the annular base and matches the shape of the slider on the back of the chuck, so as to restrict the chuck to only make axial linear movement.

[0031] Preferably, the rotating handle is a foldable lever structure, and its effective lever arm length is not less than 5 times the diameter of the lead screw.

[0032] Preferably, the inner diameter of the annular base is 19mm ± 0.05mm to form a transition fit with the bearing seat of the Rieter K42 spinning machine.

[0033] Preferably, the claw (3) is made of spring steel and has a surface hardness of HRC40–45 after induction hardening and tempering.

[0034] Preferably, the total weight of the device does not exceed 1.5 kg, and the weight includes the positioning component, the holding component, the driving component, and the rotating handle.

[0035] This invention also provides a method for quick assembly and disassembly of roller bearings on spinning frames, characterized by the following steps:

[0036] a) Coaxially fit the annular base of the positioning component onto the bearing seat of the spinning machine roller, so that the end face of the positioning step fits against the end face of the bearing seat;

[0037] b) Adjust each jaw synchronously to ensure that its arc-shaped grooves evenly clamp the outer edge of the bearing;

[0038] c) Rotate the handle to drive the clamping assembly axially at a constant speed of 5mm / s–10mm / s via the lead screw, pull the bearing out along the roller axis to complete the disassembly, or rotate in the opposite direction to press in the new bearing.

[0039] d) After the operation is completed, rotate the handle in the opposite direction to release the jaws and remove the device.

[0040] As described above, this invention discloses a quick disassembly device and method for a spinning machine roller bearing. The device uses a positioning component that precisely engages with the bearing housing, a holding component that surrounds the outer edge of the bearing, and a drive component that uses a screw-handle transmission method to smoothly pull out or press the bearing in, achieving non-destructive, efficient, and safe disassembly and assembly operations.

[0041] By employing the above technical solution, the quick disassembly device and method for the roller bearing of the spinning frame of the present invention has at least the following advantages:

[0042] Disassembly time has been reduced from an average of 15 minutes to 1 minute, improving maintenance efficiency by more than ten times;

[0043] The arc-shaped grooves of the chuck distribute force evenly, completely avoiding damage to bearings and roller shafts caused by traditional hammering, and significantly protecting the integrity of the equipment.

[0044] Purely mechanical lead screw drive, no need for hammering or grinding, safe and reliable operation, completely eliminating the risk of workplace injuries such as splashing, sparks and slippage;

[0045] With a simple structure, few parts, and an overall weight of ≤1.5kg, it is easy to carry and has low manufacturing costs;

[0046] The same device can perform both disassembly and installation, making it highly versatile and suitable for various spinning machine models such as Rieter K42.

[0047] In summary, the present invention, a unique quick-disassembly device and method for spinning machine roller bearings, aims to solve the problems of low efficiency, easy damage, and poor safety in existing technologies. It possesses numerous advantages and practical value, and is truly innovative as no similar designs have been publicly disclosed or used in similar methods, manufacturing methods, or processing methods. It represents a significant improvement in method, manufacturing method, processing method, and function, demonstrating substantial technological progress and producing user-friendly and practical results. Furthermore, it offers several enhanced functions compared to existing quick-disassembly devices and methods for spinning machine roller bearings, making it more suitable for practical use and possessing broad industrial application value. It is indeed a novel, progressive, and practical new design.

[0048] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific methods, manufacturing methods, processing methods and structures of the present invention are given in detail in the following embodiments and accompanying drawings. Attached Figure Description

[0049] Figure 1 Schematic diagram of the quick-release device for the roller bearing of a spinning frame;

[0050] Figure 2 Flowchart of a quick disassembly method for roller bearings on a spinning machine.

[0051] in:

[0052] 1. Annular base, 2. Positioning step, 3. Claw, 4. Guide groove, 5. Lead screw, 6. Rotating handle. Detailed Implementation

[0053] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation method, manufacturing method, steps, structure, features and effects of the quick disassembly device and method for the roller bearing of a spinning machine according to the present invention.

[0054] Please see Figure 1 As shown, the quick disassembly device and method for the roller bearing of a spinning frame according to a preferred embodiment of the present invention mainly includes the following steps:

[0055] S1 reservation

[0056] The annular base is coaxially fitted onto the outer circle of the bearing housing of the spinning machine roller, so that the end face of the positioning step is in close contact with the end face of the bearing housing, thus completing the axial and radial pre-positioning of the tooling.

[0057] S2 clamping bearing

[0058] Simultaneously rotate the adjusting screws of the two jaws so that the 80°–100° arc-shaped grooves on the inner side of the jaws evenly surround the outer edge of the bearing; continue to tighten until there is no relative rotation between the jaws and the outer ring of the bearing, ensuring a secure hold without damaging the bearing chamfer.

[0059] S3 applies tension

[0060] Rotate the handle clockwise at a constant speed. The lead screw will generate axial displacement in the threaded hole of the annular base. The axial tension will be transmitted to the clamping assembly through the thrust bearing. The pawl will move to the left in a straight line along the guide groove and pull the bearing out of the roller shaft at a speed of 5–10 mm / s. The entire disassembly process is completed in about 1 minute.

[0061] S4 unloading tooling

[0062] Rotate the handle in the opposite direction to release the chuck, remove the quick-release device, and you can proceed with subsequent maintenance or replacement work.

[0063] To install the bearing, simply place the new bearing on the roller shaft end, repeat steps S1 and S2, and then rotate the handle counterclockwise to allow the lead screw to push the pawl (or add a pressure sleeve) to press the new bearing into the bearing housing to the specified position, thus completing the installation.

[0064] Example 1

[0065] Non-destructive quick disassembly and reassembly of the front roller bearing (model 6001-2RS, inner diameter 12mm, outer diameter 28mm, width 8mm) on the Rieter K42 spinning frame:

[0066] I. Tooling Preparation

[0067] The main parameters of each component are as follows: inner diameter of the annular base is 19.00mm ± 0.02mm, positioning step height is 4mm, and clearance with the bearing seat end face is 0.10mm; the claws (two pieces) have an arc-shaped groove with a central angle of 90° and a groove depth of 1.6×8mm=12.8mm, made of 65Mn, HRC42; the lead screw is an M10×2mm fine thread with an effective stroke of 20mm; the rotating handle is a folding lever with a lever arm of 150mm (lead screw diameter 10mm, lever ratio 15:1); the weight of the entire device is 1.3kg.

[0068] II. Disassembly Steps

[0069] S1 reservation

[0070] After stopping the machine, remove the roller end cover to expose the bearing. Gently push the annular base along the outer circumference of the bearing housing until the positioning step fully fits the end face, ensuring that the tooling is coaxial with the roller shaft.

[0071] S2 clamping bearing

[0072] Simultaneously tighten the adjusting nuts of both jaws so that the arc-shaped grooves completely fit the outer ring of the bearing. After feeling no wobble, continue to tighten by 1 / 4 turn (approximately 0.15mm interference) to ensure that there is no relative rotation between the jaws and the bearing.

[0073] S3 applies tension

[0074] Rotate the handle clockwise at a linear speed of approximately 2 r / s. The lead screw advances 2 mm per revolution, and the pawl smoothly pulls the bearing along the guide groove. The peak torque does not exceed 12 N·m. The bearing begins to loosen within 8 seconds and completely disengages from the roller shaft after 20 seconds, with a total time of 45 seconds.

[0075] S4 unloading tooling

[0076] Turn the handle counterclockwise half a turn to release the chuck, remove the device and the old bearing, and check that the journal has no scratches and the bearing outer ring has no indentations.

[0077] III. Reinstallation Steps

[0078] S5 comes pre-installed with new bearings

[0079] Gently slide the new bearing onto the roller shaft end, paying attention to the direction of the seal.

[0080] S6 tooling reset

[0081] Reattach the annular base to the bearing housing, ensuring the positioning step is flush against the end face.

[0082] S7 with added pressure sleeve

[0083] To prevent the chucks from directly contacting the new bearing dust cover, a nylon sleeve with an outer diameter of 28mm, an inner diameter of 20mm, and a thickness of 2mm is placed on the outer ring end face of the bearing.

[0084] S8 press-fit bearing

[0085] Rotate the handle counterclockwise. The lead screw pushes the chuck and the pressure sleeve, pressing the new bearing into the bearing seat at a uniform speed of 5mm / s until it is fully engaged with the shaft shoulder (stroke of about 8mm), which takes 20s.

[0086] S9 unloading tooling

[0087] Loosen the handle clockwise, remove the pressure sleeve and tooling, reinstall the end cover, and complete the entire maintenance operation.

[0088] IV. Effect Verification

[0089] Compared to traditional hammering disassembly: the disassembly time for a single bearing is reduced from 15 minutes to 45 seconds, and the installation time is reduced from 10 minutes to 20 seconds; after 50 consecutive tests, there is no visible damage to the roller journal and the outer ring of the bearing; the operator does not need to use a hammer or grinding wheel, there are no sparks or metal shavings flying throughout the process, and the risk of workplace injury is reduced to zero.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the methods and techniques disclosed above without departing from the scope of the present invention to create equivalent embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A device for disassembling and assembling roller bearings of a spinning frame, characterized in that, include: The positioning component is in the form of an annular base (1), the inner diameter of which is coaxial with the outer diameter of the bearing seat of the spinning machine roller and has clearance fit. One end of the annular base (1) is provided with an axially extending positioning step (2), and the end face of the positioning step (2) fits against the end face of the bearing seat to limit the axial position. The clamping assembly is slidably disposed inside the annular base (1) and includes at least two radially synchronously adjustable jaws (3). The inner side of the jaws (3) is provided with an arc-shaped groove that matches the outer edge contour of the bearing. A guide groove (4) is provided between the back of the jaws (3) and the annular base (1) so that the jaws (3) can only slide in a straight line along the axial direction. The drive assembly includes a lead screw (5) and a rotating handle (6). The lead screw (5) is threadedly connected to a threaded through hole coaxially provided on the annular base (1). One end of the lead screw (5) is rotatably axially abutted against the clamping assembly through a thrust bearing, and the other end is fixedly connected to the rotating handle (6). When the rotating handle (6) is rotated, the lead screw (5) moves axially relative to the annular base (1) and drives the clamping assembly to move axially along the guide groove (4) through the thrust bearing, thereby pulling the bearing out or pressing it into the roller shaft.

2. The apparatus according to claim 1, characterized in that: The central angle of the arc-shaped groove on the inner side of the claw (3) is 80°–100°, and the groove depth is 1.5 to 1.8 times the thickness of the bearing edge.

3. The apparatus according to claim 1, characterized in that: The height of the positioning step (2) is 3mm–5mm, and the clearance between it and the bearing seat end face is 0.05mm–0.15mm.

4. The apparatus according to claim 1, characterized in that: The lead screw (6) has a pitch of 2mm–3mm and an effective axial travel of 15mm–25mm.

5. The apparatus according to claim 1, characterized in that: The guide groove (4) is a dovetail groove structure, which is set on the inner wall of the annular base (1) and matches the shape of the slider on the back of the claw (3) to restrict the claw (3) to only make axial linear movement.

6. The apparatus according to claim 1, characterized in that: The rotating handle (6) is a foldable lever structure, and its effective lever arm length is not less than 5 times the diameter of the lead screw (5).

7. The apparatus according to claim 1, characterized in that: The inner diameter of the annular base (1) is 19mm ± 0.05mm to form a transition fit with the bearing housing.

8. The apparatus according to claim 1, characterized in that: The chuck (3) is made of spring steel and has a surface hardness of HRC40–45 after induction hardening and tempering.

9. The apparatus according to claim 1, characterized in that: The total weight of the device does not exceed 1.5 kg, and the weight includes the positioning component, the clamping component, the driving component, and the rotating handle (6).

10. A method for quick assembly and disassembly of a spinning frame roller bearing using the apparatus according to any one of claims 1–9, characterized in that, Includes the following steps: a) Coaxially fit the annular base (1) of the positioning component to the bearing seat of the spinning machine roller, so that the end face of the positioning step (2) fits against the end face of the bearing seat; b) Synchronously adjust each jaw (3) so that its arc-shaped groove evenly clamps the outer edge of the bearing; c) Rotate the handle (6) to drive the clamping assembly to move axially at a constant speed of 5mm / s–10mm / s through the lead screw (5), pull the bearing out along the roller axis to complete the disassembly, or rotate in the opposite direction to press in the new bearing. d) After the operation is completed, rotate the handle (6) in the opposite direction to release the chuck (3) and remove the device.

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