CN217808031U

CN217808031U - Two-way tight slip ring that expands

Info

Publication number: CN217808031U
Application number: CN202221965772.5U
Authority: CN
Inventors: 李席
Original assignee: Zhejiang China Rubber Technology Co ltd
Current assignee: Zhejiang China Rubber Technology Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-15
Anticipated expiration: 2032-07-26

Abstract

The utility model relates to a slip ring technical field, in particular to two-way tight slip ring that expands, including the outer loop, with outer loop normal running fit's inner ring and be used for fastening the fastener of sleeve class work piece on the outer loop, the fastener is including bloated tight key and elasticity pretension piece, be equipped with a plurality of ring seat with same interval distribution on the outer peripheral face of inner ring, evenly distributed has a plurality of spouts on the ring seat, the spout includes straight section, is located the lifting section of straight section both sides, straight section is tangent with the inner ring, contained angle between lifting section and the straight section is the obtuse angle, bloated tight key is violently located in two spouts that set up side by side, elasticity pretension piece sets up the interval at two ring seats, the beneficial effects of the utility model are that: the two-way expansion function of the expansion key is realized, the stroke of the expansion key is reduced, and the working efficiency is improved.

Description

Two-way tight slip ring that expands

Technical Field

The utility model relates to a slip ring technical field, concretely relates to tight slip ring of two-way inflation.

Background

In a splitting machine and a winding machine in the industries of printing, papermaking and the like, a slip shaft is adopted to wind paper or other strip-shaped products, and a plurality of slip rings are sleeved on the slip shaft. Key formula slip ring on the market at present is including the outer loop, the inner ring, the tight key that expands, is equipped with the spout that supplies the tight key installation that expands on the inner ring, along with the tight key lifting that expands of inner ring rotation realizes the tight function that expands of slip ring, however because the restriction of spout structure, the slip ring can only rotate towards a direction and expand tightly, when motor corotation promptly, the tight key that expands in the slip ring can the lifting thereupon, when the motor reversal, the tight key whereabouts that expands, only can realize the lifting or the whereabouts of the tight key that expands in specific motor rotation direction, the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that lie in to above-mentioned prior art not enough, provide a two-way tight slip ring that expands, realize the two-way tight function that expands of tight key, reduce the tight key stroke that expands, promote work efficiency.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a slip ring of two-way bloated tight, includes the outer loop, with outer loop normal running fit's inner ring and be used for fastening the fastener of sleeve class work piece on the outer loop, its characterized in that: the fastener is including bloated tight key and elasticity pretension piece, be equipped with a plurality of ring seat with same interval distribution on the outer peripheral face of inner ring, evenly distributed has a plurality of spouts on the ring seat, the spout includes straight section, is located the lifting section of straight section both sides, straight section is tangent with the inner ring, contained angle between lifting section and the straight section is the obtuse angle, bloated tight key is violently located two spouts that set up side by side, elasticity pretension piece sets up the interval department at two ring seats.

The utility model has the characteristics as above: the sleeve type workpiece is sleeved on the slip ring, the slip ring is controlled to rotate along with the slip shaft, the expansion key performs ascending and descending actions along with different rotating directions of the inner ring so as to change the outer diameter of the slip ring, the expansion key is positioned on the straight section in an initial state, two lifting sections are symmetrically arranged in the sliding chute, the expansion key can ascend no matter the slip shaft starts to rotate anticlockwise or clockwise, the expansion key can descend after reversing, the installation direction of the slip ring does not need to be changed, ascending of the expansion key in two rotating directions can be realized, the forward rotation or the reverse rotation of the motor can be better adapted, the practicability of the slip ring is improved, meanwhile, the stroke of the expansion key is reduced, the inner ring rotates by a small angle, the expansion key can ascend, the working load of the motor is reduced, and the effects of environmental protection and energy saving are achieved.

The utility model discloses further setting is: the expansion key comprises a key body, a friction layer is arranged on the upper end face of the key body, a sliding block is arranged on the lower end face of the key body, the friction layer comprises a plurality of conical protrusions, the conical protrusions are made of rubber, the surface, matched with the sliding groove, of the sliding block is an arc-shaped surface, a key groove matched with the expansion key is formed in the outer ring, two lightening holes are formed in the expansion key, and the lightening holes are located in the sliding groove.

The utility model has the characteristics of the utility model discloses: the expansion key extends out of the key groove of the outer ring to abut against the sleeve type workpiece, and the friction force between the expansion key and the sleeve type workpiece is improved by arranging the friction layer on the upper end face of the key body, so that enough torque between the expansion key and the sleeve type workpiece is ensured; the conical bulges of the friction layer are made of rubber, so that the friction layer has the advantages of wear resistance and high friction coefficient; the surface of the sliding block matched with the sliding groove is arranged to be an arc surface, so that the friction force when the sliding block slides relative to the sliding groove is reduced, and the smooth operation of the slip ring is ensured; and lightening holes are arranged in the expansion key, so that the dead weight of the expansion key is reduced, and the smoothness of ascending and descending is further ensured.

The utility model discloses further setting is: the elastic pretensioning piece comprises a sleeve, a steel ball arranged in the sleeve in a sliding mode and a spring arranged in the sleeve and used for providing pretightening force for the steel ball, an anti-drop ring for clamping the steel ball to prevent the steel ball from dropping is arranged in the sleeve, a sleeve groove for embedding the sleeve is formed in the outer ring, the sleeve comprises a limiting section and a free section, the limiting section is located in the sleeve groove, the free section is located at the interval of the ring seats, the diameter of the limiting section is larger than that of the free section, and the diameter of the free section is smaller than that of the interval between the two ring seats.

The utility model has the characteristics as above: the spring is arranged in the sleeve and is prevented from being separated from the sleeve by the anti-separation ring; the spring provides pretightening force for the steel ball and facilitates the steel ball to retract into the sleeve; the sleeve barrel is divided into a limiting section and a free section, the limiting section enables the limiting section to be embedded on the outer ring, and the free section enables the free section not to interfere rotation of the inner ring.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an exploded view of the embodiment of the present invention.

Fig. 3 is a cross-sectional view of an elastic preload member in accordance with an embodiment of the present invention.

Fig. 4 is a schematic structural view of the expansion key according to the embodiment of the present invention.

Detailed Description

The specific embodiments are only for explaining the present invention, and it is not a limitation to the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present invention.

The two-way expanding slip ring as shown in fig. 1-4 comprises an outer ring 1, an inner ring 2 which is in running fit with the outer ring 1, and a fastening piece for fastening a sleeve workpiece on the outer ring 1, wherein the fastening piece comprises an expanding key 3 and an elastic preload piece 4, a plurality of ring seats 21 which are distributed at the same interval are arranged on the outer peripheral surface of the inner ring 2, four ring seats 21 are arranged in the embodiment, a plurality of sliding grooves 22 are uniformly distributed on the

ring seats

21, 4 sliding grooves 22 are arranged in the embodiment, each sliding groove 22 comprises a straight section 221 and lifting sections 222 which are positioned at two sides of the straight section 221, the straight section 221 is tangent to the inner ring 2, an included angle between each lifting section 222 and the straight section 221 is an obtuse angle, the expanding key 3 is transversely arranged in the two sliding grooves 22 which are arranged side by side, namely the sliding grooves arranged on the two ring seats, and the elastic preload piece 4 is arranged at the interval between the two ring seats 21.

The expansion key 3 comprises a key body 31, a friction layer 32 is arranged on the upper end face of the key body 31, a sliding block 33 is arranged on the lower end face of the key body 31, the friction layer 32 comprises a plurality of conical protrusions 321, the conical protrusions 321 are made of rubber, the surface, matched with the sliding groove 22, of the sliding block 33 is an arc-shaped surface, a key groove 11 matched with the expansion key 3 is formed in the outer ring 1, two lightening holes 34 are formed in the expansion key 3, and the lightening holes 34 are located in the sliding groove 22.

Elasticity pretension piece 4 includes sleeve 41, slides and sets up steel ball 42 in sleeve 41 and sets up the spring 43 that provides the pretightning force for steel ball 42 in sleeve 41, be equipped with joint steel ball 42 in the sleeve 41 and prevent its anticreep ring 44 that drops, be equipped with the sleeve groove 12 that supplies sleeve 41 to set in the outer loop 1, sleeve 41 is including the spacing section 411 that is located sleeve groove 12, the free section 412 that is located ring seat 21 interval department, spacing section 411 diameter is greater than free section 412 diameter, free section 412 diameter is less than the interval between two ring seats 21, and keyway 11 sets up and is circular array evenly distributed along outer loop circumference with sleeve groove 12 is alternate.

The working principle is as follows: the slip rings are sleeved on the slip shaft, the motor drives the slip shaft to rotate, the slip rings are controlled to rotate along with the slip shaft, sleeve type workpieces are sleeved on the outer ring, the expansion key is embedded in the key groove of the outer ring, in an initial state, the sliding block of the expansion key is located in the straight section of the sliding groove, the sleeve type workpieces can be conveniently sleeved on the slip rings, the expansion key can lift up to push the sleeve type workpieces when the inner ring rotates anticlockwise or clockwise first, after lifting, if the rotation direction of the inner ring is changed, the expansion key descends into the straight section and then enters the lifting section of the other end, the expansion key can still ascend to push the sleeve type workpieces, and by arranging the sliding groove structure, the lifting and descending of the expansion key can be realized no matter whether the motor rotates forwards or reversely, and the installation direction of the slip ring does not need to be changed, the stroke of the expansion key is reduced, and the expansion efficiency is improved.

Claims

1. The utility model provides a two-way tight slip ring that expands, includes the outer loop, with outer loop normal running fit's inner ring and be used for fastening the fastener of sleeve class work piece on the outer loop, its characterized in that: the fastener is including bloated tight key and elasticity pretension piece, be equipped with a plurality of ring seat with same interval distribution on the outer peripheral face of inner ring, evenly distributed has a plurality of spouts on the ring seat, the spout includes straight section, is located the lifting section of straight section both sides, straight section is tangent with the inner ring, contained angle between lifting section and the straight section is the obtuse angle, bloated tight key is violently located two spouts that set up side by side, elasticity pretension piece sets up the interval department at two ring seats.

2. A bi-directionally expanding slip ring as claimed in claim 1, wherein: the expansion key comprises a key body, a friction layer is arranged on the upper end face of the key body, a sliding block is arranged on the lower end face of the key body, the friction layer comprises a plurality of conical protrusions, the conical protrusions are made of rubber, the surface, matched with the sliding groove, of the sliding block is an arc-shaped surface, a key groove matched with the expansion key is formed in the outer ring, two lightening holes are formed in the expansion key, and the lightening holes are located in the sliding groove.

3. A bi-directionally expanding slip ring as claimed in claim 1, wherein: elasticity pretension piece includes sleeve, the steel ball that slides the setting in the sleeve and sets up the spring that provides the pretightning force for the steel ball in the sleeve, be equipped with the anticreep ring that the joint steel ball prevented it from droing in the sleeve, be equipped with the sleeve groove that supplies the sleeve to set in the outer loop, the sleeve is including being located the spacing section of sleeve inslot, being located the free section of ring seat interval department, spacing section diameter is greater than the free section diameter, the free section diameter is less than the interval between two ring seats.