CN212424994U - Convex key type slip shaft with good sealing performance - Google Patents

Abstract

The utility model relates to a good protruding key formula slippage axle of leakproofness relates to the interior support field of coiling strip material, including the main shaft with fix a plurality of slippage rings on the main shaft, the slippage ring includes outer loop and inner ring, and one side of outer loop is fixed with the dust retaining ring groove that sets up along outer loop circumference, and one side that the dust retaining ring groove was kept away from to the outer loop is fixed with the dust retaining and inserts the ring, and the external diameter that the ring was inserted to the dust retaining equals the internal diameter that the dust retaining ring was encircled, and the dust retaining ring groove and the dust retaining on two adjacent slippage rings insert the ring plug bush together. To current slip axle easily receive the dust and infect, influence the problem of normal use, the utility model discloses have the effect that the ring plug bush is inserted to the fender dirt annular and keep off the dirt and seal the gap between the adjacent slip ring together, can effectively prevent the dust to get into between the slip ring, increase the relative resistance between the slip ring.

Description

Convex key type slip shaft with good sealing performance

Technical Field

The utility model belongs to the technical field of the interior support of coiling strip and specifically relates to a good protruding key formula slip shaft of leakproofness is related to.

Background

A splitting machine is a mechanical device for splitting wide paper, mica tapes or films into a plurality of narrow materials, and is commonly used for paper making machinery, wire and cable mica tapes and printing and packaging machinery. A splitting machine can use a slip shaft to wind paper or other strip-shaped products, and the slip shaft can slip when the tensile force reaches a certain value, so that the paper and other products are protected.

A conventional slip shaft structure, for example, a central air pressure type narrow-width slip shaft is disclosed in the patent publication No. CN 209957140U. The slip shaft comprises a main shaft, a slip ring inner ring and a slip ring outer ring; the inner ring of the slip ring is sleeved on the main shaft, and the outer ring of the slip ring is sleeved outside the inner ring of the slip ring; an expansion block capable of expanding in a protruding manner is arranged on the outer ring of the slip ring; the outer surface of the inner ring of the slip ring is provided with an inclined surface lug, and when the inner ring of the slip ring rotates relative to the outer ring of the slip ring, the inclined surface lug can drive the expansion block to bulge out; the outer surface of the slip ring outer ring is provided with a roller which can be retracted into the slip ring outer ring; an air bag is arranged between the inner ring of the slip ring and the main shaft, and a friction block is arranged between the air bag and the inner ring of the slip ring.

The above prior art solutions have the following drawbacks: when the slip shaft is used, a plurality of slip rings are generally sleeved on the main shaft, a certain gap exists between each slip ring and the corresponding slip ring, the working environment of the slip shaft is complex, dust is easily accumulated between the slip rings in a dusty environment, the friction resistance between the slip rings and the slip ring support is increased, the slip shaft and the slip shaft are interfered with each other, the uniformity of the slip shaft is reduced, and the slip shaft cannot work normally.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a protruding key formula slip axle that the leakproofness is good, can prevent effectively that debris from entering into the gap between the slip ring, keep the working property of slip axle preferred to prior art exist not enough, the purpose of the utility model is to provide a leakproofness is good.

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

the utility model provides a good protruding key formula slippage axle of leakproofness, includes the main shaft and fixes a plurality of slippage rings on the main shaft, the slippage ring includes outer loop and inner ring, one side of outer loop is fixed with the edge the fender dirt annular that outer loop circumference set up, the outer loop is kept away from one side of fender dirt annular be fixed with keep off the dirt annular and slide to insert the complex fender dirt and insert the ring, adjacent two keep off dirt annular and fender dirt on the slippage ring insert the ring plug bush together.

By adopting the technical scheme, the dust blocking ring grooves and the dust blocking inserting rings on the two adjacent slip rings are mutually inserted and sleeved together, gaps between the slip rings are isolated from the external environment, a reliable dustproof structure is formed, metal dust or other impurities between the adjacent slip rings can be avoided, the uniformity of the slip rings is influenced, the slip rings are more stable in rolling, and the working performance of the slip rings is optimized.

The present invention may be further configured in a preferred embodiment as: and an anti-collision sliding aid piece is arranged between every two adjacent slip rings, and two sides of the anti-collision sliding aid piece are respectively abutted to the slip rings on two sides.

By adopting the technical scheme, the anti-collision sliding-assistant piece is arranged between the two slip rings, so that a dust-blocking ring groove or a dust-blocking insert ring is prevented from being directly abutted against the side wall of the other slip ring, the anti-collision sliding-assistant piece can prevent the end surfaces of the two slip rings from being directly contacted and supporting the two adjacent slip rings, the relative position between the slip rings is stabilized, and the friction interference between the two adjacent slip rings is reduced; when a dustproof structure of the dust blocking ring groove and the dust blocking insert ring is added, the anti-collision sliding-assistant piece is arranged to reduce mutual interference between the slip rings, so that the uniformity of the slip shaft is improved, and the working performance of the slip shaft is more stable and reliable.

The present invention may be further configured in a preferred embodiment as: the anticollision helps the saddle to be end face bearing, end face bearing's the direct butt both sides slip ring's of both sides lateral wall just keep off the dirt annular with keep off the dirt and insert the ring and not contact with adjacent slip ring.

By adopting the technical scheme, the end face bearing can play a role in assisting sliding while supporting the two adjacent slip rings, so that the mutual interference between the two adjacent slip rings is avoided.

The present invention may be further configured in a preferred embodiment as: the slip difference ring comprises an outer ring, an inner ring which is in running fit with the outer ring and a fastener which is used for fastening a sleeve workpiece on the outer ring, the fastener comprises a tensioning piece and an elastic pre-tensioning piece which protrudes out of the peripheral side plane of the outer ring and can be pressed back into the outer ring, a tensioning inclined plane which is matched with the tensioning piece and used for ejecting the tensioning piece when the tensioning piece moves relatively in a certain direction is arranged on the inner ring, tensioning holes and pre-tensioning holes are respectively arranged on the outer ring corresponding to the tensioning piece and the elastic pre-tensioning piece, and the tensioning piece is in sliding fit with the tensioning holes.

By adopting the technical scheme, high-pressure gas is filled into the air bag, so that the friction plate is abutted against the inner wall of the inner ring, and the relative position of the inner ring and the main shaft is fixed; the sleeve parts such as a paper tube or a plastic tube for rolling products are sleeved on the outer ring, the elastic pre-tightening part tightly supports the inner wall of the sleeve part and generates a certain static friction force, due to the compressible property of the elastic pre-tightening part, the elastic pre-tightening part cannot generate large interference on the installation of the sleeve part, the sleeve part is rotated to enable the pre-tightening part to rotate along with the sleeve part (the rotating direction is opposite to the rolling direction of the slip shaft), the pre-tightening part drives the outer ring to rotate relative to the inner ring, the tensioning part rotates relative to the inner ring under the driving of the outer ring and outwards protrudes along the radial direction of the slip ring under the abutting force of the tensioning inclined plane, and the sleeve part is abutted against the inner wall of the sleeve part, so that more stable fixation is realized; in the rotation process of the slip shaft, the tensioning block is matched with the tensioning inclined plane, so that the tensioning block continuously receives outward thrust, sufficient torsion is ensured between the slip ring and the sleeve part, and the slip ring and the sleeve part cannot rotate relatively.

The present invention may be further configured in a preferred embodiment as: the pre-tightening hole is a counter bore, the elastic pre-tightening piece is fixed in the pre-tightening hole through inserting, the pre-tightening sleeve with a T-shaped outline is arranged in the pre-tightening hole, the abutting ball in the pre-tightening sleeve and the pre-tightening spring abutted to the abutting ball are arranged, the pre-tightening sleeve is far away from one end of the pre-tightening spring, a clamping joint is arranged at the first anti-falling ring of the abutting ball, the one end of the abutting ball is arranged at the second anti-falling ring abutted to the end of the pre-tightening spring, the abutting ball protrudes out of the outer ring surface under the action of no external force, a circular ring-shaped avoiding groove matched with the pre-tightening sleeve in a sliding mode is formed in the inner ring, and the avoiding groove is coaxial with the inner ring.

By adopting the technical scheme, two ends of the pre-tightening spring are respectively abutted against the second anti-drop ring and the abutting ball to provide ground relay for the abutting ball, the abutting ball protrudes out of the pre-tightening sleeve and is a spherical abutting head, the first anti-drop ring can prevent the abutting ball from completely separating from the pre-tightening sleeve, the spherical abutting head has smaller resistance to the sleeve piece axially installed, and can automatically retract into the pre-tightening sleeve under the action of axial force, and the abutting ball can facilitate the installation of the sleeve piece; the T-shaped pre-tightening sleeve is abutted against the bottom of the counter bore of the pre-tightening hole, so that the pre-tightening sleeve is prevented from being completely retracted into the outer ring under the action of pressure, and the reliability of the pre-tightening function of the elastic pre-tightening piece is improved; the avoidance groove can provide enough installation space for the elastic preload piece, and the elastic preload piece is prevented from interfering the relative rotation of the inner ring and the outer ring.

The present invention may be further configured in a preferred embodiment as: the supporting section that the inner ring week side was fixed with the outer loop butt, dodge the groove and cut apart the supporting section, dodge the trench and be located the central point of inner ring puts.

By adopting the technical scheme, the avoidance groove is positioned at the central position of the inner ring, so that the two support ends at the same position have the same thickness, and the connection between the outer ring and the inner ring is more stable; the support section enables the inner ring and the outer ring to be coaxial and to rotate relatively, and the reduction of the area of the support section can also reduce the sliding friction force between the inner ring and the outer ring, so that the inner ring and the outer ring can rotate relatively more easily.

The present invention may be further configured in a preferred embodiment as: and the edge positions of the support section and the butt joint end of the outer ring are provided with round guide angles.

Through adopting above-mentioned technical scheme, reduce the butt area between inner ring and the outer loop, reduce frictional resistance, release stress that fillet structure can be better strengthens the structural strength at butt position, better performance supporting role.

The present invention may be further configured in a preferred embodiment as: and an arc-shaped sliding block is fixed on one side of the tensioning piece, which is close to the inner ring.

By adopting the technical scheme, the friction resistance of the tensioning block and the tensioning inclined plane during relative sliding is reduced, so that the slip shaft is easy to operate.

The present invention may be further configured in a preferred embodiment as: the inner ring is a ferromagnetic circular ring, and a magnetic reset piece is fixed on one side of the tensioning piece, which is close to the inner ring.

Through adopting above-mentioned technical scheme, the tight spare that rises is protruding to one side of keeping away from the inner ring under the effect that rises on the inclined plane that rises, and the tight spare that rises probably because and the friction force that rises between the tight hole or be located the below of main shaft after the relative inner ring of outer ring back of rise initial position can't retract, disturbs sleeve part and from the epaxial dismantlement of slip, and magnetism between magnetic reset piece and the inner ring provides the restoring force for the tight spare that rises.

The present invention may be further configured in a preferred embodiment as: and one side of the expansion piece close to the expansion hole is fixedly provided with a butt joint block which is in sliding fit with the expansion hole, and one side of the butt joint block far away from the inner ring is provided with resistance increasing grains.

Through adopting above-mentioned technical scheme, increase the frictional force between tight spare and the cover barrel spare inner wall that rises, guarantee to have enough big moment of torsion between slip ring and the cover barrel spare.

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

1. by arranging the dust blocking inserting rings and the dust blocking ring grooves, the dust blocking ring grooves and the dust blocking inserting rings are inserted together to form a dustproof structure for closing the gaps between the adjacent slip rings, so that external impurities are effectively prevented from entering the adjacent slip rings, the increase of the interaction force between the slip rings is avoided, the integral uniformity of the slip shaft is improved, and the working performance of the slip shaft is optimized;

2. by arranging the anti-collision sliding aid, the interaction force between the adjacent slip rings is effectively reduced, the mutual interference between the slip rings is reduced, the uniformity of the slip shaft is improved, and the work of the slip shaft is more stable;

3. through the fastener combination that sets up elasticity pretension piece and rising piece, make the installation of cover barrel convenient and fast more, provide enough big moment of torsion simultaneously between slip ring and the cover barrel.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic structural diagram of the region A in FIG. 1;

FIG. 3 is a schematic structural diagram of a slip ring and an anti-collision sliding aid in the embodiment;

FIG. 4 is a schematic view of the internal structure of the slip ring of the present embodiment;

FIG. 5 is a schematic structural diagram of a slip ring in the present embodiment;

FIG. 6 is an enlarged schematic view of the area B in FIG. 4;

fig. 7 is a schematic diagram of the exploded structure of fig. 5.

Reference numerals: 1. a main shaft; 2. a slip ring; 21. an outer ring; 211. tensioning holes; 212. pre-tightening the hole; 213. a dust-blocking ring groove; 214. a dust-blocking insert ring; 22. an inner ring; 221. tensioning the inclined plane; 222. an avoidance groove; 223. a support section; 224. a round lead angle; 23. a fastener; 24. a tensioning member; 241. an arc-shaped sliding block; 242. a magnetic reset member; 243. a butting block; 244. increasing resistance lines; 245. limiting the side edges; 25. an elastic preload member; 251. pre-tightening the sleeve; 252. abutting the ball; 253. pre-tightening the spring; 254. a first anti-slip ring; 255. a second anti-slip ring; 3. anti-collision sliding aid.

Detailed Description

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

Referring to fig. 1, the convex key type slip shaft with good sealing performance comprises a main shaft 1 and a plurality of slip rings 2 sleeved on the main shaft 1, wherein the main shaft 1 is an inflatable shaft.

Referring to fig. 2 and 3 again, the slip ring 2 includes an inner ring 22 and an outer ring 21, one side of the outer ring 21 is integrally provided with a circular dust-blocking ring groove 213, the outer diameter of the dust-blocking ring groove 213 is the same as the outer diameter of the outer ring 21, one side of the outer ring 21 away from the dust-blocking ring groove 213 is integrally provided with a dust-blocking insert ring 214, the outer diameter of the dust-blocking insert ring 214 is in clearance fit with the dust-blocking ring groove 213, and the surface is subjected to smoothing treatment, so that the dust-blocking insert ring 214 is in low-resistance insert sleeve fit with the birth ring groove; the main shaft 1 is also sleeved with a circular end face bearing, the end face bearing is inserted into the dust-blocking insert ring 214, two ends of the end face bearing are respectively abutted against the side walls of the adjacent slip rings 2, and meanwhile, the dust-blocking ring groove 213 and the dust-blocking insert ring 214 are not contacted with the side walls of the adjacent slip rings 2.

Referring to fig. 3 and 4, the peripheral side of the outer ring 21 is provided with four tensioning holes 211 and four pre-tightening holes 212, the tensioning holes 211 and the pre-tightening holes 212 are used for installing the fasteners 23, the tensioning holes 211 and the pre-tightening holes 212 are alternately arranged and are uniformly distributed in a circular array along the circumferential direction of the outer ring 21, and the fasteners 23 include tensioning members 24 and elastic pre-tightening members 25 respectively installed in the tensioning holes 211 and the pre-tightening holes 212.

Referring to fig. 5 and 6 again, the pre-tightening member includes a hollow T-shaped cylindrical pre-tightening sleeve 251, an abutting ball 252 slidably disposed in the pre-tightening sleeve 251, and a pre-tightening spring 253 disposed in the pre-tightening sleeve 251 for providing a pre-tightening force to the abutting ball 252, the pre-tightening hole 212 is disposed as a countersunk hole corresponding to the pre-tightening sleeve 251, and a convex edge of an end portion of the T-shaped pre-tightening sleeve 251 abuts against a bottom of the countersunk hole of the pre-tightening hole 212 to limit the position of the pre-tightening sleeve 251; one side of the pre-tightening sleeve 251, which is far away from the outer ring 21, is provided with a second anti-falling ring 255 in an extending ring shape on the inner side of the pre-tightening sleeve 251, the second anti-falling ring 255 is abutted against one end of the pre-tightening spring 253, one end of the pre-tightening sleeve 251, which is far away from the second anti-falling ring 255, is provided with a first anti-falling ring 254, which is clamped with the abutting ball 252, and when the abutting ball 252 is abutted against the first anti-falling ring 254, one side of the abutting ball 252, which is far away from the pre-tightening spring 253, protrudes out of the; an annular avoiding groove 222 coaxial with the inner ring 22 is formed in the central position of the circumferential side of the inner ring 22 to prevent the inner ring 22 and the pre-tightening sleeve 251 from interfering with each other.

The periphery of the inner ring 22 is provided with four tensioning inclined planes 221, the four tensioning inclined planes 221 are uniformly distributed along the circumferential direction of the inner ring 22 in a circular array, a supporting section 223 is arranged on the outer side of the inner ring 22 provided with the tensioning inclined planes 221 and is abutted against the inner circular wall of the outer ring 21 for supporting, and edges on the supporting end are provided with circular guide angles 224; one end of the tensioning member 24 close to the tensioning inclined surface 221 is provided with an arc-shaped slider 241, so that the tensioning member 24 can slide relative to the tensioning inclined surface 221 with low resistance; one end of the tightening member 24, which is far away from the tightening inclined surface 221, is provided with a rectangular abutting block 243 integrally arranged with the arc-shaped slider 241, the abutting block 243 is in sliding fit with the tightening hole 211, and one side of the abutting block 243, which is far away from the arc-shaped slider 241, is provided with a resistance increasing line 244 formed by a plurality of conical protrusions; the limiting side edges 245 at the extending positions of the junction of the abutting block 243 and the arc-shaped sliding block 241 to both sides are abutted with the inner circular wall of the outer ring 21, so that the protruding length of the abutting block 243 is limited, the abutting degree of the abutting block 243 on the sleeve workpiece on the outer ring 21 is further limited, and the effect of limiting the maximum torsion between the slip shaft and the sleeve workpiece is achieved; a rectangular mounting groove is formed in one side of the arc-shaped slider 241 close to the inner ring 22, and a magnetic reset piece 242 is fixedly inserted into the mounting groove, and the inner ring 22 is made of ferromagnetic material.

The implementation principle of the embodiment is as follows: two sides of the outer ring 21 of the slip ring 2 are provided with dust blocking ring grooves 213 and dust blocking inserting rings 214 which are in inserting fit with the dust blocking ring grooves 213, the end parts of the ear dust blocking ring grooves 213 and the dust blocking inserting rings 214 on two adjacent slip rings 2 are inserted together to shield a gap between the slip ring 2 and the slip ring 2, the gap between the slip ring 2 and the slip ring 2 is sealed to effectively isolate external dust, and the increase of interaction force between the slip ring 2 and the slip ring 2, which causes mutual interference between the slip rings 2 and influences the uniformity of the whole slip shaft, is avoided; an end face bearing is arranged between the slip ring 2 and serves as an anti-collision sliding aid 3 to prevent the two slip rings 2 from being mutually abutted to generate friction and mutual interference, the end face bearing can effectively avoid the mutual interference of the adjacent slip rings 2, and the uniformity of the slip shaft is improved.

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 (10)

1. A protruding key formula slip axle that leakproofness is good, includes main shaft (1) and fixes a plurality of slip rings (2) on main shaft (1), slip ring (2) include outer loop (21) and inner ring (22), its characterized in that: one side of outer loop (21) is fixed with the edge keep off dirt annular (213) that outer loop (21) circumference set up, outer loop (21) are kept away from one side of keeping off dirt annular (213) be fixed with keep off dirt annular (213) sliding insertion complex keep off dirt insert ring (214), adjacent two keep off dirt annular (213) and keep off dirt on slip ring (2) insert ring (214) the plug bush together.

2. A well-sealed male-type slip shaft according to claim 1, wherein: an anti-collision sliding aid piece (3) is arranged between every two adjacent slip rings (2), and two sides of the anti-collision sliding aid piece (3) are respectively abutted to the slip rings (2) on the two sides.

3. A well-sealed male-type slip shaft according to claim 2, wherein: anticollision helps slider (3) to be end face bearing, end face bearing's the direct butt of both sides slip ring (2) the lateral wall just keep off dirt annular (213) with keep off dirt insert ring (214) and adjacent slip ring (2) contactless.

4. A well-sealed male-type slip shaft according to claim 1, wherein: the slip difference ring (2) comprises an outer ring (21), an inner ring (22) in running fit with the outer ring (21) and a fastening piece (23) used for fastening a sleeve type workpiece on the outer ring (21), the fastening piece (23) comprises a tensioning piece (24) and an elastic pretensioning piece (25) protruding out of the circumferential side plane of the outer ring (21) and capable of being pressed back into the outer ring (21), the inner ring (22) is provided with a tensioning inclined plane (221) which is matched with the tensioning piece (24) and is used for ejecting the tensioning piece (24) when relative movement in a certain direction occurs, the outer ring (21) is provided with a tensioning hole (211) and a pretensioning hole (212) corresponding to the tensioning piece (24) and the elastic pretensioning piece (25) respectively, and the tensioning piece (24) is in sliding fit with the tensioning hole (211).

5. The positive keytype slip shaft according to claim 4, wherein: the pre-tightening hole (212) is a counter bore, the elastic pre-tightening piece (25) comprises a pre-tightening sleeve (251) which is fixedly inserted into the pre-tightening hole (212) and has a T-shaped profile, an abutting ball (252) arranged in the pre-tightening sleeve (251) and a pre-tightening spring (253) abutted against the abutting ball (252), one end of the pre-tightening sleeve (251) far away from the pre-tightening spring (253) is provided with a first anti-falling ring (254) which is clamped with the abutting ball (252), one end of the pre-tightening sleeve (251) far away from the abutting ball (252) is provided with a second anti-falling ring (255) abutted against the end part of the pre-tightening spring (253), the abutting ball (252) protrudes out of the surface of the outer ring (21) without external force, the inner ring (22) is provided with a circular avoidance groove (222) matched with the pre-tightening sleeve (251) in a sliding mode, and the avoidance groove (222) is coaxial with the inner ring (22).

6. A well-sealed male-type slip shaft according to claim 5, wherein: inner ring (22) week side be fixed with support section (223) of outer ring (21) butt, it cuts apart to dodge groove (222) support section (223), it is located to dodge groove (222) the central point of inner ring (22) puts.

7. The positive keytype slip shaft according to claim 6, wherein: the edge positions of the support section (223) and the abutting end of the outer ring (21) are provided with round lead angles (224).

8. The positive keytype slip shaft according to claim 4, wherein: an arc-shaped sliding block (241) is fixed on one side of the tensioning piece (24) close to the inner ring (22).

9. The positive keytype slip shaft according to claim 4, wherein: the inner ring (22) is a ferromagnetic circular ring, and a magnetic resetting piece (242) is fixed on one side of the tensioning piece (24) close to the inner ring (22).

10. The positive keytype slip shaft according to claim 4, wherein: and a butting block (243) which is in sliding fit with the tensioning hole (211) is fixed on one side, close to the tensioning hole (211), of the tensioning piece (24), and a resistance increasing line (244) is arranged on one side, far away from the inner ring (22), of the butting block (243).

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