CN212316319U - Combined structure of aluminum sleeve and elastomer support - Google Patents

Abstract

The utility model discloses a composite structure of aluminium sleeve pipe and elastomer supporter, including aluminium sleeve pipe, elastomer supporter, spinning bobbin, the aluminium sleeve pipe sets up a rectangle recess, and the elastomer supporter setting is just tightly wrapped up on the face of cylinder of rectangle recess in aluminium sheathed tube rectangle recess, and the aluminium sleeve pipe combines with the elastomer supporter to set up in the spinning bobbin, the elastomer supporter is the annular structure of a polyurethane elastomer material, and the elastomer supporter outside is at the annular wing of several circles of axial distribution, and wherein, each circle of wing external diameter is by little big formation and the unanimous tapering of spinning bobbin inner wall. The utility model discloses the key adopts the cyclic annular wing structure of single elastomer in the supporter, guarantees to spin the bobbin and in step on the high-speed rotation of spindle under appropriate frictional force, has simplified process flow in the aspect of manufacturing, improves production efficiency, and helps reducing the oscillating quantity of spindle, improves spindle moving stationarity.

Description

Combined structure of aluminum sleeve and elastomer support

Technical Field

The utility model relates to a ring spinning frame technical field, concretely relates to integrated configuration of aluminium sleeve pipe and elastomer supporter.

Background

The aluminum sleeve spindle is an important spinning special part of a ring spinning frame, the support of the aluminum sleeve spindle is an important part for ensuring synchronous rotation of spinning bobbins, and is the basis of an automatic collective doffing device of the spinning frame, and the structure of the support determines the complexity of production and manufacturing. The ring spinning frame is developed along with the continuous progress of the technology, the integrated doffing device is produced, the control system drives the servo system after receiving a full yarn signal, the doffing operation can be completed fully automatically, all full bobbin yarns are pulled off from the spindle, an empty yarn bobbin is inserted onto the spindle, a new spinning process is started, the doffing operation is completed in a short time, the labor amount is reduced, the labor intensity is reduced, the labor productivity is greatly improved, and the method is the selection and development direction for improving the economic benefit of a cotton spinning enterprise.

As is well known, the rod disc of the spindle has two common structures, namely a polished rod and an aluminum sleeve. However, the tube core of the spinning bobbin and the upper taper of the rod disc of the polished rod spindle form a small taper conical surface fit, the static friction force generated by pressing the conical surface and sealing the conical surface is used for realizing the winding function along with the synchronous high-speed rotation of the spindle, the friction force needs to be overcome when the spinning is finished and the bobbin is pulled out, the lower pressure is insufficient when the spinning bobbin is installed due to the small taper of the joint surface, the phenomenon of tube jumping can be caused by the small friction force, the large friction force of the lower pressure is large, the bobbin pulling force is also large, sometimes the situation of tube pulling failure occurs, and the tube inserting and pulling of the automatic doffing device are very unfavorable. As shown in fig. 1 and 2, on one hand, the diameter of the aluminum sleeve spindle is increased to improve the rigidity, on the other hand, the elasticity of the spring and the supporter and the centrifugal force generated during synchronous rotation thereof jointly support the upper part of the spinning bobbin and drive the bobbin to be wound, the lower part of the spinning bobbin keeps a gap with the outer conical surface of the aluminum sleeve to be suspended or instantaneously contacted, the bottom end surface of the spinning bobbin is contacted with a yarn cutting disc (or a yarn clamping device and the like) to limit the axial position, the resistance of inserting and pulling the bobbin is basically constant, and it is seen that the supporting and inserting problems of the spinning bobbin are solved by the structure of the aluminum sleeve spindle with the spring and the supporter, so that the collective doffing is realized. Therefore, the aluminum sleeve spindle is widely used, and the demand is increasing year by year.

Generally, when a concave stepped hole of a holder is machined in an aluminum sleeve, the structure of the concave stepped hole is slightly different due to different technological modes, as shown in fig. 3, the size D of the stepped hole on the left side of fig. 3 can be round or long round, or the size direction of D is consistent with the direction of the center line of the aluminum sleeve, so that three different machining methods can be adopted, namely, a first machining process, a T-shaped slot milling cutter is inserted into a certain depth, deviates from the center of the holder hole for a certain distance, rotates for a circle, and moves back to the center to withdraw a cutting tool; in the second processing technology, after the cutter is inserted to a depth, the cutter moves back and forth along a horizontal direction vertical to the central axis of the aluminum sleeve, and then the cutting cutter is withdrawn; the third type is similar to the second type and moves back and forth along the central axis direction of the aluminum sleeve; the fourth processing technology is shown on the right side of fig. 4, after the T-shaped slot milling cutter is inserted, the T-shaped slot milling cutter horizontally swings for a certain angle around the center of the aluminum sleeve and then exits from the cutting tool. Compared with the characteristics of the processes, except that the feeding and retracting motions in the depth direction are the same, the first processing process is relatively complicated compared with the other three processes, and not only needs to move, but also needs to rotate, and the other three processes can move linearly or rotate singly. Therefore, the latter three processing techniques are more adopted, and the first processing method is less adopted. The T-shaped slot milling cutter is a special milling cutter, and the structure and the length of a cutting edge on a cylindrical surface are similar to those of a standard T-shaped slot; the top end face of the cutter is provided with a chisel edge which is the same as the keyway milling cutter and can be axially fed, so the number of the cutting edges is small, the cutting efficiency is low, in addition, the tail end face which is parallel to the top end face of the cutter participates in cutting simultaneously, the top end face and the tail end face both have a deflection angle towards the central direction in order to avoid friction with a machined plane, after the cutter is used for a period of time, the length of a cylinder is reduced due to abrasion, and the cutting cutter can be seen to be specially manufactured, and the cost is high.

From the stress angle of the support, a plane bottom structure is processed by the first three processes, the contact condition of the spring and the support at the hole bottom is superior to that of a cylindrical surface bottom structure processed by the fourth process, the support can be stably kept in the direction perpendicular to the flat bottom surface, and the opposite cylindrical surface bottom structure is not beneficial to keeping a stable stress direction. Therefore, the bottom structure of the cylindrical surface is easy to cause more uniform distribution differences, and becomes a factor of large spindle swing.

From the view of the mounting structure of the holder hole, the bottom of a plane or a cylindrical surface has the following common problems, and due to the influence of the manufacturing and adjusting precision of processing equipment, the circumference of the three equal parts is very difficult in practice, errors are inevitable, and the stability of a spindle rotating at high speed is not facilitated; similarly, in the direction of the central line of the aluminum sleeve, the height of the position of the cutter, the diameter of the cutting cutter and the length of the cutting edge all have different levels of difference, so that the center of mass of the aluminum sleeve deviates from the center, and the generated centrifugal force has certain influence on the swinging and the stability of the spindle.

From the perspective of production efficiency, three support holes are uniformly distributed on each aluminum sleeve, namely three times of the number of spindles, the required processing workload is very large, in addition, in the processing process, due to the fact that the cutting size is small, compared with the feeding, discharging and idle cutting strokes, the efficiency advantage is not achieved, and the cutting time loss and the process turnover loss are relatively large. From the installation efficiency of supporter spring and supporter, the quantity is many, a plurality of head is little, need arrange one by one, put, use the clamp to press from both sides tight supporter and produce after warping, aim at indent step hole again and put into, and manual operation volume is also very big, and its combination efficiency is low.

From the viewpoint of quality or weight, the thickness uniformity and stamping size control of the plate used in the manufacturing process of the support are not completely consistent, so that certain difference is caused, the spring of the support also has the difference in the length and winding diameter of the spring wire, in short, the mass center and the mass of the spring and the support have certain deviation, and the difference of centrifugal force is caused during high-speed rotation, so that the spindle swings.

In summary, the mounting structure of the holder has certain disadvantages in function, which is large in production cost, so that it is necessary to consider whether there is a suitable alternative, overcome the disadvantages, improve the reliability of the holder, reduce the production cost, and improve the comprehensive benefits.

Utility model patent CN209941179U has the spindle of rubber ring supporter, and twice rubber ring groove about the periphery of spindle cap is equipped with, glues and is equipped with a support rubber ring at each rubber ring inslot embedding, and its part is in large quantity, and processing and combination work load are big, and because of the problem of interior taper of spindle cap, concentricity, cause crooked, eccentric and produce the skew center of aluminium sleeve pipe barycenter easily.

Utility model patent CN205688073U spindle holder, cylindric supporting sleeve set up in the spindle cap indent journal section, along a plurality of arc shell fragment of axial interval distribution, lean on the elastic force supporting bobbin inner wall of arc shell fragment, and its structure and production technology are complicated, because the deviation of processing, probably produce inhomogeneous centrifugal force and cause the oscillating quantity increase when the spindle is rotatory. The two practical patent technologies are suitable for polished rod spindles, but not for aluminum sleeve spindles.

Disclosure of Invention

The utility model aims at providing a composite construction of aluminium sleeve pipe and elastomer supporter makes the spinning bobbin reliably rotate along with the spindle is high-speed, simplifies aluminium sheathed tube processing technology process, improves the aggregate erection efficiency of supporter. The spinning bobbin is ensured to synchronously rotate at a high speed with the spindle under proper friction force, the process flow is simplified in the aspect of processing and manufacturing, the production efficiency is improved, the swinging quantity of the spindle is reduced, and the running stability of the spindle is improved.

The utility model adopts the technical proposal that: a combined structure of an aluminum sleeve and an elastomer support comprises the aluminum sleeve, the elastomer support and a spinning bobbin, wherein the aluminum sleeve is provided with a rectangular groove, the rectangular groove is turned at the height position of the original support of the aluminum sleeve, the inner ring of the elastomer support is expanded by external force and slides into the rectangular groove of the aluminum sleeve, the elastomer support is of an annular structure made of polyurethane elastomer, the elastomer support is arranged in the rectangular groove of the aluminum sleeve and tightly wraps the cylindrical surface of the rectangular groove, and two end surfaces of the groove are further clamped with the elastomer support to prevent the elastomer support from being separated from the groove so as to prevent the aluminum sleeve from moving back and forth in the axial direction. The aluminum sleeve and the elastomer holder are combined and arranged in the spinning bobbin, a plurality of circles of annular wings are axially distributed on the outer side of the elastomer holder, wherein the outer diameter of each circle of wing is gradually increased to form a taper consistent with the inner wall of the spinning bobbin, and the annular wings are extruded and deformed and bent to generate elasticity in the process of inserting the spinning bobbin into the aluminum sleeve so as to tightly support the spinning bobbin.

Further, the inner diameter of the elastomer holder is smaller than the diameter of the cylindrical surface of the groove of the aluminum sleeve; the elastomer holder has a length greater than the groove width of the aluminum sleeve.

Furthermore, the outer diameter of each wing of the elastomer holder is gradually increased to form a taper consistent with the inner wall of the spinning bobbin, and the outer diameter of each circle of wing is larger than the diameter of the corresponding spinning bobbin at the section.

Further, the cross-sectional shape of the elastomer support is a structure in which radial fins are uniformly distributed.

Further, the cross-sectional shape of the elastomer support is a structure with axially distributed convex ribs.

Compared with the prior art, the utility model its beneficial effect does: the utility model relates to a composite structure of an aluminum sleeve and an elastomer supporter, which is characterized in that the supporter adopts a single elastomer annular wing structure to ensure that a spinning bobbin rotates synchronously at high speed with a spindle under proper friction force, simplifies the process flow in the aspect of processing and manufacturing, improves the production efficiency, is beneficial to reducing the swinging amount of the spindle and improves the running stability of the spindle; the spinning bobbin can reliably rotate at high speed along with the spindle, the processing process of the aluminum sleeve is simplified, and the assembly and installation efficiency of the support is improved.

The utility model discloses at rectangle recess of aluminium sleeve pipe upper portion design, add man-hour with aluminium sleeve pipe excircle together be a process, through increasing a tool changing action and corresponding grooving procedure, can accomplish, the processing load is few, avoids the later stage to carry out the processing of trisection equipartition indent on special plane, and production efficiency promotes obviously, owing to adopted unified location benchmark and the tight mode of clamp, the recess center is unanimous with aluminium sleeve pipe center, and the concentricity is good. The elastomer supporter, adopt the polyurethane material with wear-resisting characteristic, the injection molding or mixing the shaping die is simple, the production efficiency is high, its inner diameter is smaller than the cylindrical surface diameter of the recess of the aluminium sleeve, can bind on the cylinder tightly, and the length of the elastomer supporter is greater than the width of the recess of the aluminium sleeve, is stuck and fastened between both sides of the recess, play the role of axial positioning, several circles of thin winged fin external diameters are turned from small to large, suitable for spinning the inner taper of the bobbin, and the equivalent is greater than the diameter of the corresponding cross-section of the bobbin, the deflection of every winged fin is equal after the bobbin is inserted, therefore can guarantee the bobbin will not deflect, the stress is uniform; certain gaps are reserved among the thin wings, the yielding space condition for containing the elastomer is created for extrusion deformation, the structure of the wing-shaped elastic body is in a symmetrical annular shape, the design of a die parting surface is easy, and the die is simple in structure and easy to realize. In the process of assembling and installing, the inner ring of the elastomer holder is sleeved and gradually expanded from the short cone at the top end of the aluminum sleeve by means of external force and a small amount of technological antifriction powder, and simultaneously pushed to the rectangular groove of the aluminum sleeve, when the elastomer holder reaches the groove, the elastomer holder naturally retracts to tighten the cylindrical surface part of the rectangular groove, and the elastomer is clamped on two side surfaces of the groove. Because the elastic tightening mode is adopted, the concentricity between the two is consistent, and the centrifugal force generated by slight difference is only influenced by material segregation when the spindle rotates at high speed, but the unevenness and unbalance generated by other manufacturing precision are overcome, and the improvement of the rotation stability of the spindle is facilitated. In the spinning process, the elastic body has certain vibration absorption and damping characteristics, so that partial impact energy can be absorbed, and spinning broken ends are prevented. The utility model discloses aluminium sleeve pipe and supporter are suitable for the spinning aluminium sleeve pipe spindle of spinning frame.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a front view of a conventional spring holder;

FIG. 2 is a side view of the structure of FIG. 1;

FIG. 3 is a schematic cross-sectional view of an aluminum sleeve of a conventional spring holder, which is a bottom-type concave hole;

FIG. 4 is a schematic cross-sectional view of an aluminum sleeve of a conventional spring holder being a cylindrical bottom-type concave hole;

fig. 5 is a schematic front view of the present invention;

FIG. 6 is a schematic front view of the elastomer holder of the present invention;

fig. 7 is a schematic perspective view of the elastomer holder according to the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 5 to 7, a combination structure of an aluminum bushing and an elastomer holder includes an aluminum bushing 1, an elastomer holder 2, a spinning bobbin 3, the aluminum sleeve 1 is provided with a rectangular groove, the elastomer support 2 is arranged in the rectangular groove of the aluminum sleeve 1 and tightly wrapped on the cylindrical surface of the rectangular groove, two end surfaces of the groove further clamp the elastomer support 2 to avoid separating from the groove, so as to prevent the elastomer support 2 from moving back and forth axially, the aluminum sleeve 1 and the elastomer support 2 are combined and arranged in the spinning bobbin 3, the elastomer support 2 is an annular structure made of polyurethane elastomer, the elastomer support 2 is restricted by the space size of the spinning bobbin 3 to generate extrusion deformation and bending deformation, and the elastomer support 2 and the spinning bobbin 3 are kept to rotate at high speed synchronously with the spindle by the deformation elasticity, so that the spinning winding function of a spinning frame is realized. And a plurality of circles of annular wings are axially distributed on the outer side of the elastomer support 2, wherein the outer diameter of each circle of wings is gradually increased to form a taper consistent with the inner wall of the spinning bobbin 3.

The inner diameter d of the elastomer holder 2 is smaller than the groove cylindrical surface diameter d0 of the aluminum sleeve 1; the length H of the elastomer holder 2 is greater than the groove width H of the aluminum sleeve 1. The outer diameter of each wing of the elastomer support 2 is gradually increased to form a taper consistent with the inner wall of the spinning bobbin 3, and the outer diameter of each circle of wing is larger than the diameter of the corresponding spinning bobbin 3 at the section.

Wherein, the elastomer supporter 2 can adopt a structure with the cross section shape of a radial wing uniform distribution form; the elastomer holder 2 may have a cross-sectional shape in which axial ribs are uniformly distributed.

The utility model discloses design a rectangle recess on 1 upper portion of aluminium sleeve pipe, the face of cylinder diameter of recess is d0, the groove width is h, add man-hour with 1 excircle of aluminium sleeve pipe (awl) with being a process, through increasing a tool changing action and corresponding grooving procedure, can accomplish cutting work, the cutter is simple, the processing is convenient, be different from the processing that carries out trisection equipartition indent step hole on the special plane, production efficiency promotes obviously, owing to adopted unified location benchmark and the tight mode of clamp, the recess center is unanimous with aluminium sleeve pipe 1's center, the concentricity is good. The elastomer holder 2 is an annular structure made of polyurethane elastomer, the material has excellent mechanical, chemical and wear-resistant properties, the manufacturing process can adopt casting, mixing and injection molding processes, and the batch production can be realized by adopting one of the three processes; the diameter of an inner hole is D, n circles of annular wings are axially distributed on the outer side, the maximum outer diameter is D, the thickness of the root of each wing is t, the wings gradually extend outwards to be thin to be close to 0, the distance between the wings is p, the outer diameter of each wing is gradually increased to form a taper consistent with the inner wall of the spinning bobbin 3, and the outer diameter of each circle of wings is larger than the diameter of the corresponding spinning bobbin 3 at the section. The inner diameter d of the elastomer support 2 is smaller than the diameter d0 of the cylindrical surface of the groove of the aluminum sleeve 1, and the elastomer support can be tightly wrapped on the cylindrical surface of the groove of the aluminum sleeve 1 and is free from slipping within a certain force range; the length H of the elastomer support 2 is larger than the width H of the groove of the aluminum sleeve 1, and the elastomer support 2 is tightly clamped by the groove of the aluminum sleeve 1, so that the elastomer support is prevented from axially moving back and forth to avoid separation, and the elastomer support 2 is ensured to be at the theoretical design height at the axial position.

Because the groove of the aluminum sleeve 1 and the wing of the elastomer support 2 (or the die thereof) are all in a symmetrical round structure, a uniform positioning reference can be realized in the manufacturing process, the occurrence of repeated positioning errors is reduced, the coaxiality is easy to control and improve, the manufacturability is excellent, and the elastomer support 2 with the annular wing structure is superior to other elastomer supports.

In the process of assembling and installing, by means of certain external force and using a small amount of technological talcum powder, the elastic body support 2 is sleeved in the short cone at the top end of the aluminum sleeve 1 and gradually expands the inner hole of the elastic body support 2, meanwhile, the elastic body support 2 is pushed to the rectangular groove of the aluminum sleeve 1, when reaching the groove, the elastic body support 2 naturally retracts and is tightly tied on the cylindrical part of the rectangular groove, and two side faces of the groove are tightly clamped with the elastic body support 2. Therefore, the number of parts is small, the combination process is simple, and the production cost is low.

In the process of inserting the spinning bobbin 3 into the aluminum sleeve 1, the annular wing of the elastomer support 2 is restrained by the space size of the inner wall of the spinning bobbin 3 to gradually generate extrusion deformation and bending deformation, and the generated elastic deformation force tightly supports the spinning bobbin 3. On one hand, the size of the thickness t of the root part of the wing or the section shape is designed and optimized to enable the elastomer support 2 and the spinning bobbin 3 to achieve more reasonable elastic deformation force, on the other hand, the wing is gradually thinned in the outward extension direction of the circumference direction, the wings at the same diameter are consistent in thickness, and the deformation capacity and the elasticity are equal; in the axial direction, the distance p between every two wings is equal and is consistent with the taper gap of the inner wall of the spinning bobbin 3, and the elasticity generated by every ring of wings is basically the same, namely the elasticity in the axial direction is uniformly distributed in the length H range of the elastomer support 2; the radial and axial stress conditions of the elastomer support 2 and the spinning bobbin 3 are obviously superior to the point contact condition of the spring type support. When the spinning bobbin 3 is pulled out, the wing wings can exert good elasticity (flexibility) characteristics, even or reverse bending deformation and extrusion deformation while external force overcomes deformation elasticity during insertion, and the elasticity is gradually reduced until completely relieved along with the increase of the constrained space.

In the spinning process, the high-speed rotating aluminum sleeve spindle, the aluminum sleeve 1 and the elastomer support 2 are slightly different only under the influence of material segregation, additional unevenness and imbalance caused by complex production process can be avoided, the rotating precision and stability of the spindle can be improved, and the centrifugal force influencing the aluminum sleeve 1 and the elastomer support 2 is relatively small even if the spindle speeds are different. In addition, the elastomer support 2 has certain vibration absorption and damping characteristics, so that partial impact energy can be absorbed, the rotation precision of the spindle is improved, and adverse factors caused by spinning broken ends are reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The combined structure of the aluminum sleeve and the elastomer support comprises an aluminum sleeve (1), the elastomer support (2) and a spinning bobbin (3), and is characterized in that the aluminum sleeve (1) is provided with a rectangular groove, the elastomer support (2) is arranged in the rectangular groove of the aluminum sleeve (1) and tightly wrapped on the cylindrical surface of the rectangular groove, the aluminum sleeve (1) and the elastomer support (2) are combined and arranged in the spinning bobbin (3), and a plurality of circles of annular wing wings are axially distributed on the outer side of the elastomer support (2), wherein the outer diameter of each circle of wing forms a taper consistent with the inner wall of the spinning bobbin (3) from small to large.

2. An aluminium sleeve and elastomer holder combination according to claim 1, characterized in that the elastomer holder (2) is an annular structure of polyurethane elastomer material.

3. An aluminium sleeve and elastomer holder combination according to claim 1, characterized in that the inner diameter of the elastomer holder (2) is smaller than the grooved cylindrical surface diameter of the aluminium sleeve (1); the length of the elastomer support (2) is greater than the groove width of the aluminum sleeve (1).

4. A combination of an aluminium sleeve and an elastomer holder according to claim 1, characterized in that the elastomer holder (2) has wings with an outer diameter which tapers from small to large in conformity with the inner wall of the spinning bobbin (3), the outer diameter of each turn of the wings being larger than the diameter of the respective spinning bobbin (3).

5. A combination of an aluminium sleeve and an elastomer holder according to claim 1, characterized in that the elastomer holder (2) has a cross-sectional shape of a radial fin equispaced configuration.

6. An aluminium sleeve and elastomer holder combination according to claim 1, characterized in that the elastomer holder (2) has a cross-sectional shape of a structure with axially equispaced ribs.

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