CN212424997U

CN212424997U - Single-air-path slip shaft

Info

Publication number: CN212424997U
Application number: CN202020571098.7U
Authority: CN
Inventors: 杨代华; 郑尧舜
Original assignee: Shanghai Chengbing Machinery Co ltd
Current assignee: Shanghai Chengbing Machinery Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-01-29
Anticipated expiration: 2030-04-16

Abstract

The utility model relates to a single gas circuit slippage axle, including the retaining ring, sloping block and the cover that expands, the one end of retaining ring is rabbeted with the one end of sloping block, and the inside fixed mounting of retaining ring one end has the bearing, the one end that the retaining ring was kept away from to the sloping block is laminated mutually with the cover that expands, the end face distribution that the cover that expands is adjacent with the sloping block has a plurality of piston bore, the inside slidable mounting of piston bore has the piston piece, air channel and two recesses have been seted up to the inboard of the cover that expands, the air channel is located between two recesses, the inside of recess has inlayed O type circle, the mounting groove has been seted up on the lateral wall of sloping block, install a plurality ofly to the jack catch in the mounting groove, the cover is equipped with elastic ring cover on the lateral wall of jack catch, the bell mouth has been seted up at the. The utility model discloses an extend at the hole bottom in piston hole and set up the bell mouth, when promoting the motion of piston piece, make piston piece terminal surface atress more even, increased the stability of piston piece motion.

Description

Single-air-path slip shaft

Technical Field

The utility model belongs to the technical field of the technique of rolling equipment and specifically relates to a single gas circuit slippage axle is related to.

Background

With the rapid development of social economy, people put higher demands on production and life. The emergence of the slip shaft solves a plurality of problems in life and production, is widely applied to the fields of electronics, packaging and the like, and becomes a vital part in the fields. It can be said that the quality of the slip shaft directly affects the competitiveness of the product in its market.

The original air expansion shaft is widely applied to the splitting machine due to the characteristics of large bearing weight, high economic benefit and the like, but the original air expansion shaft is a single element, the phenomena of coil stripping and the like caused by uneven thickness and tension of coiled materials are easy to occur, and the uniformity of the winding end face and the winding speed cannot meet the higher and higher requirements of people. Therefore, the slip shaft is widely applied to splitting machines for winding paper, films and the like.

The utility model discloses a slip differential axle of single gas circuit structure is disclosed in the chinese utility model patent with application number CN201721824161.8, including the retaining ring, sloping block and the cover that expands, the one end of retaining ring is rabbeted with the one end of sloping block, and the inside fixed mounting of retaining ring one end has the bearing, the cover that expands is installed in the other end cooperation of sloping block, the terminal surface equidistance that the cover that expands is adjacent with the sloping block distributes and has a plurality of piston hole, the internally mounted in piston hole has the piston piece, the piston piece is arranged in the inside air flue of the cover that expands, air channel and two recesses have been seted up to the inboard of the cover that expands, the air channel is located between two recesses, the inside of recess has inlayed O type circle, the outside of sloping block is equipped with a plurality of pairs of jack catchs, and the outside hoop of sloping block has the spring, the.

Above-mentioned utility model single gas circuit structure's slip axle designs for O type circle gas seal's mode in the account cover of every slip ring, has the sealed structure of mechanical nature contact simultaneously, dual sealed effect. However, when the piston block is pushed to move in the piston hole by the air hole, the air in the air hole acts on the side wall of the piston block and a gap between the end part of the piston block and the bottom of the piston hole, and when the radial force borne by the piston block is greater than the axial force, the phenomenon that the piston block is blocked easily occurs in the process of driving the piston block to push out again, so that the problem that the slip shaft cannot normally operate is caused.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims at providing a single gas circuit slippage axle.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a single gas circuit slippage axle, includes retaining ring, sloping block and the cover that expands, the one end of retaining ring is rabbeted with the one end of sloping block, and the inside fixed mounting of retaining ring one end has the bearing, and the other end cooperation of sloping block is installed and is expanded the cover, and the cover that expands has a plurality of piston hole with the terminal surface distribution that the sloping block is adjacent, and the inside slidable mounting in piston hole has the piston piece, and air channel and two recesses have been seted up to the inboard of the cover that expands, and the air channel is located between two recesses, and the inside of recess has inlayed O type circle, the mounting groove has been seted up on the lateral wall of sloping block, install a plurality ofly to the jack catch in the mounting groove, the cover is equipped with elastic ring cover on the lateral wall of jack catch, the bell mouth has been seted up in the extension of the hole bottom of piston hole, and the bottom surface of.

By adopting the technical scheme, the tapered hole is formed in the bottom of the piston hole in an extending mode, the air hole communicated with the tapered hole is formed in the bottom of the ventilation groove, when the slip shaft works, the air source introduces air into the ventilation groove, the air enters the tapered hole from the air hole and acts on the side face of the tapered hole, the tapered hole enables the air acting on the side face of the tapered hole to be gathered at the central position of one end, close to the tapered hole, of the piston block by utilizing the shape characteristic of the tapered hole, when the piston block is pushed to move in the piston hole, the end face of the piston block is stressed more uniformly, and the movement stability of the piston block is improved; because the tapered hole can be communicated with the air hole all the time and is matched with the tapered characteristic of the tapered hole, larger axial force can be provided for the piston block, and the normal motion of the piston block in the piston hole is ensured.

The present invention may be further configured in a preferred embodiment as: the piston is characterized in that a ring groove is formed in the peripheral side wall of the piston block, and a sealing ring which is abutted to the wall of the piston hole is mounted in the ring groove.

By adopting the technical scheme, the annular groove is formed in the peripheral side wall of the piston block, and the sealing ring is arranged in the annular groove, so that the sealing property between the piston block and the wall of the piston hole is improved, and the normal motion of the piston block in the piston hole is ensured.

The present invention may be further configured in a preferred embodiment as: and one end of the piston block, which is close to the tapered hole, is provided with a chamfer which increases the gas action area.

Through adopting above-mentioned technical scheme, set up the chamfer at the piston piece one end that is close to the bell mouth, the chamfer has increased gaseous active area, has further guaranteed the stability of the motion of piston piece.

The present invention may be further configured in a preferred embodiment as: and a spacer bush matched with the bearing is sleeved on the inner side wall of the inclined block.

Through adopting above-mentioned technical scheme, establish the spacer sleeve through the inside wall cover at the sloping block, the spacer sleeve is used for fixed bloated cover, prevents that bloated cover from taking place not hard up in the installation.

The present invention may be further configured in a preferred embodiment as: the inclined block is characterized in that a limiting groove is formed in the peripheral side wall of the inclined block, a matching groove is formed in the outer side wall of the clamping jaw, and the elastic ring sleeve is installed in the limiting groove and the matching groove.

Through adopting above-mentioned technical scheme, set up the spacing groove on the sloping block, set up the cooperation groove on the jack catch to install elasticity ring cover in both, spacing groove and cooperation groove cooperation are used, can not only guarantee the slip of jack catch in the mounting groove, also can play spacing effect to elasticity ring cover simultaneously.

The present invention may be further configured in a preferred embodiment as: and two side walls of the limiting groove and the matching groove, which are close to each other, are provided with guide angles which are convenient for the elastic ring sleeve to bend.

Through adopting above-mentioned technical scheme, when the piston piece promoted the direction removal of sloping block towards the retaining ring, the jack catch slides in the mounting groove, and the elastic ring cover of installing on the jack catch takes place to warp. The two side walls, close to each other, of the limiting groove and the matching groove are provided with the guide angles, the guide angles can play a certain buffering effect on deformation of the elastic ring sleeve, deformation of the elastic ring sleeve is reduced, and the service life of the elastic ring sleeve is prolonged.

The present invention may be further configured in a preferred embodiment as: the one end that the mounting groove tank bottom was kept away from to the jack catch is provided with a plurality of arch.

Through adopting above-mentioned technical scheme, keep away from the one end of mounting groove tank bottom at the jack catch and set up a plurality of arch, the arch has improved jack catch and the sleeve joint ability of cover rather than the outside, makes the sleeve installation more stable.

The present invention may be further configured in a preferred embodiment as: the elastic ring sleeve adopts one of a rubber ring or a spring.

Through adopting above-mentioned technical scheme, elasticity ring cover adopts one in rubber circle or the spring, no matter be rubber circle or spring, when guaranteeing to have certain elasticity, still has stronger fatigue life.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the tapered hole is formed in the bottom of the piston hole in an extending mode, the air hole communicated with the tapered hole is formed in the bottom of the air vent groove, when the slip shaft works, the air source introduces air into the air vent groove, the air enters the tapered hole from the air hole and acts on the side face of the tapered hole, the tapered hole enables the air acting on the side face of the tapered hole to be gathered to the center position of one end, close to the tapered hole, of the piston block through the shape characteristic of the tapered hole, when the piston block is pushed to move in the piston hole, the end face of the piston block is stressed more uniformly, and the movement stability of the piston block is improved; the conical hole can be communicated with the air hole all the time and is matched with the conical characteristic of the conical hole, so that a larger axial force can be provided for the piston block, and the normal movement of the piston block in the piston hole is ensured;

2. the annular groove is formed in the peripheral side wall of the piston block, and the sealing ring is arranged in the annular groove, so that the sealing property between the piston block and the wall of the piston hole is improved, and the normal motion of the piston block in the piston hole is ensured;

3. the chamfer is arranged at one end, close to the conical hole, of the piston block, so that the acting area of gas is increased, and the motion stability of the piston block is further ensured.

Drawings

Fig. 1 is an overall schematic view of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is a schematic structural diagram of the present invention showing the structure of the mounting groove.

Reference numerals: 1. a retainer ring; 2. a sloping block; 3. expanding the sleeve; 4. a bearing; 5. a spacer sleeve; 6. a piston bore; 7. a piston block; 8. a tapered hole; 9. a vent channel; 10. a groove; 11. an O-shaped ring; 12. air holes; 13. mounting grooves; 14. a claw; 15. an elastic ring sleeve; 16. a ring groove; 17. a seal ring; 18. chamfering; 19. a limiting groove; 20. a mating groove; 21. guiding an angle; 22. and (4) protruding.

Detailed Description

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

Referring to fig. 1 and 2, for the utility model discloses a single gas circuit slip shaft, including retaining ring 1, sloping block 2 and the cover 3 that expands, the mutual gomphosis of one end of retaining ring 1 and sloping block 2, the inside fixed mounting that sloping block 2 was kept away from to retaining ring 1 has bearing 4, and the internally mounted of sloping block 2 has spacer 5, and the one end of spacer 5 leaves the clearance with bearing 4. One end of the sloping block 2, which is far away from the retainer ring 1, is attached to the expansion sleeve 3, a plurality of circular piston holes 6 are formed in the end face of the expansion sleeve 3, which is close to the sloping block 2, and a piston block 7 is slidably arranged in each piston hole 6 along the axial direction of the piston hole. The bottom of the hole of piston hole 6 extends and has been seted up bell mouth 8, and the bottom surface of bell mouth 8 sets up towards the direction of piston hole 6, and bell mouth 8 sets up with piston hole 6 is coaxial.

Annular air channel 9 and two recesses 10 are seted up to the inboard of cover 3 that expands, and air channel 9 is located between two recesses 10, and the inside of recess 10 is inlayed and is connect with O type circle 11O. The bottom of the vent groove 9 is provided with a round air hole 12, and the air hole 12 is communicated with the tapered hole 8. The outer side wall of the oblique block 2 is provided with a mounting groove 13 which is integrally rectangular along the axial direction, a clamping jaw 14 with a trapezoidal cross section is slidably mounted in the mounting groove 13, and the outer side wall of the clamping jaw 14 is sleeved with an elastic ring sleeve 15. The elastic ring sleeve 15 adopts one of a rubber ring or a spring.

When the slip shaft works, the air source leads air into the vent groove 9, the air enters the tapered hole 8 through the air hole 12 and acts on the side face of the tapered hole 8, the tapered hole 8 enables the air acting on the side face of the tapered hole to converge to the central position of one end, close to the tapered hole 8, of the piston block 7 by utilizing the shape characteristic of the tapered hole 8, the piston block 7 is pushed to move towards the direction of the inclined block 2 and is abutted against the inclined block 2, the part, embedded with the retainer ring 1, of the inclined block 2 slides into the retainer ring 1, meanwhile, the clamping jaws 14 move synchronously along with the inclined block, and the clamping jaws 14 gradually expand outwards by utilizing the gradient of the trapezoid.

At the moment, the shaft installed in the expansion sleeve 3 drives the expansion sleeve 3 to rotate, the piston block 7 on the expansion sleeve 3 is abutted to the inclined block 2 and drives the inclined block 2 to rotate by means of friction force between the piston block and the inclined block, finally the inclined block 2 drives the clamping jaw 14 to rotate, the clamping jaw 14 is matched with an externally installed sleeve to drive the sleeve to rotate, and winding of the winding drum is achieved. When the piston block 7 is pushed to move in the piston hole 6, the end surface of the piston block 7 is stressed more uniformly, and the movement stability of the piston block 7 is improved; because the tapered hole 8 can be communicated with the air hole 12 all the time and is matched with the tapered characteristic of the tapered hole, larger axial force can be provided for the piston block 7, and the normal movement of the piston block 7 in the piston hole 6 is ensured.

An annular groove 16 is formed in the peripheral side wall of the piston block 7, a sealing ring 17 is installed in the annular groove 16, and preferably, the material of the sealing ring 17 is rubber. The sealing ring 17 improves the sealing performance between the piston block 7 and the wall of the piston hole 6, and ensures the normal movement of the piston block 7 in the piston hole 6. One end of the piston block 7 close to the tapered hole 8 is provided with a chamfer 18, and when the gas pushes the piston block 7 to move, the chamfer 18 increases the acting area of the gas, thereby further ensuring the stability of the movement of the piston block 7.

Referring to fig. 2 and 3, a circular limiting groove 19 is formed in the peripheral side wall of the inclined block 2, a matching groove 20 is formed in the outer side wall of the jaw 14, and the elastic ring sleeve 15 is installed in the limiting groove 19 and the matching groove 20. The two side walls of the limit groove 19 and the matching groove 20 which are close to each other are provided with guide angles 21, when the piston block 7 pushes the inclined block 2 to move towards the direction of the retainer ring 1, the clamping jaws 14 slide in the mounting grooves 13, the elastic ring sleeve 15 mounted on the clamping jaws 14 deforms, and the guide angles 21 can play a certain buffering effect on the deformation of the elastic ring sleeve 15, so that the deformation of the elastic ring sleeve 15 is reduced, and the service life of the elastic ring sleeve 15 is prolonged. A plurality of bulges 22 are integrally formed at one end of the jaw 14, which is far away from the bottom of the mounting groove 13, and the bulges 22 improve the clamping capacity of the jaw 14 and a sleeve sleeved outside the jaw, so that the sleeve is more stably mounted.

The implementation principle of the embodiment is as follows: when the slip shaft works, the air source leads air into the vent groove 9, the air enters the tapered hole 8 through the air hole 12 and acts on the side face of the tapered hole 8, the tapered hole 8 enables the air acting on the side face of the tapered hole to converge to the central position of one end, close to the tapered hole 8, of the piston block 7 by utilizing the shape characteristic of the tapered hole 8, the piston block 7 is pushed to move towards the direction of the inclined block 2 and is abutted against the inclined block 2, the part, embedded with the retainer ring 1, of the inclined block 2 slides into the retainer ring 1, meanwhile, the clamping jaws 14 move synchronously along with the inclined block, and the clamping jaws 14 gradually expand outwards by utilizing the gradient of the trapezoid.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a single gas circuit slippage axle, including retaining ring (1), sloping block (2) and bloated cover (3), the one end of retaining ring (1) is rabbeted with the one end of sloping block (2), and the inside fixed mounting of retaining ring (1) one end has bearing (4), the one end that retaining ring (1) were kept away from in sloping block (2) is laminated with bloated cover (3) mutually, it has a plurality of piston hole (6) to expand cover (3) and the terminal surface distribution that sloping block (2) are adjacent, the inside slidable mounting of piston hole (6) has piston piece (7), air channel (9) and two recess (10) have been seted up to the inboard of bloated cover (3), air channel (9) are located between two recess (10), the inside of recess (10) has inlayed O type circle (11O), its characterized in that: seted up mounting groove (13) on the lateral wall of sloping block (2), install a plurality ofly in mounting groove (13) to jack catch (14), the cover is equipped with elasticity ring cover (15) on the lateral wall of jack catch (14), bell mouth (8) have been seted up in the hole bottom extension of piston hole (6), and the bottom surface of bell mouth (8) sets up towards piston hole (6), bell mouth (8) and piston hole (6) coaxial setting, offer on air channel (9) tank bottom gas pocket (12) that are linked together with bell mouth (8).

2. A single gas path slip shaft as set forth in claim 1, wherein: the piston is characterized in that an annular groove (16) is formed in the peripheral side wall of the piston block (7), and a sealing ring (17) which is abutted to the wall of the piston hole (6) is installed in the annular groove (16).

3. A single gas path slip shaft as set forth in claim 1, wherein: and a chamfer (18) for increasing the gas action area is arranged at one end of the piston block (7) close to the tapered hole (8).

4. A single gas path slip shaft as set forth in claim 1, wherein: and a spacer bush (5) matched with the bearing (4) is sleeved on the inner side wall of the inclined block (2).

5. A single gas path slip shaft as set forth in claim 1, wherein: the inclined block is characterized in that a limiting groove (19) is formed in the peripheral side wall of the inclined block (2), a matching groove (20) is formed in the outer side wall of the clamping jaw (14), and the elastic ring sleeve (15) is installed in the limiting groove (19) and the matching groove (20).

6. A single gas path slip shaft according to claim 5, wherein: two side walls of the limit groove (19) and the matching groove (20) which are close to each other are provided with guide angles (21) which are convenient for the elastic ring sleeve (15) to bend.

7. A single gas path slip shaft as set forth in claim 1, wherein: and a plurality of bulges (22) are arranged at one end of the clamping jaw (14) far away from the bottom of the mounting groove (13).

8. A single gas path slip shaft as set forth in claim 1, wherein: the elastic ring sleeve (15) adopts one of a rubber ring or a spring.