CN102114999B

CN102114999B - Expansion shaft

Info

Publication number: CN102114999B
Application number: CN 201010000118
Authority: CN
Inventors: 黄俊诚; 黄宏群; 黄金川
Original assignee: Metal Industries Research and Development Centre
Current assignee: Metal Industries Research and Development Centre
Priority date: 2010-01-05
Filing date: 2010-01-05
Publication date: 2013-08-28
Anticipated expiration: 2030-01-05
Also published as: CN102114999A

Abstract

The invention relates to an expansion shaft which is used for supporting and fixing a paper element core, and comprises an outer shaft sleeve, a plurality of cover plates and a telescopic mechanism, wherein the outer shaft sleeve is provided with a shaft sleeve surface and an inner shaft hole, the axial shaft sleeve surface is respectively provided with a first penetrating part and a second penetrating part, and the first penetrating part and the second penetrating part are respectively provided with a plurality of penetrating holes. The cover plates are arranged on the penetrating holes respectively. The telescopic mechanism is arranged in the inner shaft hole between the first penetrating part and the second penetrating part in a floating way so as to realize the fixed arrangement of each cover plate; when the telescopic mechanism stretches, each cover plate is pushed outwards radially from the axle center, so that all the cover plates protrude out of the surface of the shaft sleeve; and when the telescopic mechanism retracts, the cover plates return to the penetrating holes of the first penetrating part and the second penetrating part respectively. The expansion shaft can regulate the expansion capability automatically, so as to enable the expansion strength allocation at two sides to tend to be uniform, the structural design has high rigidity, a hydraulic cylinder is taken as a power source, and the expansion shaft has the characteristics of being capable of providing relatively greater expansion force and bearing high load.

Description

Main axis of dilatation

Technical field

The present invention is relevant for a kind of main axis of dilatation, particularly relevant for a kind of high loading, but and the main axis of dilatation of the swell increment of self-control two side cover plates.

Background technology

Existing main axis of dilatation is mainly used in fixing various refill reels, makes and can directly batch steel band, aluminium strip, Stainless Steel band or the higher raw material of other proportion with this refill reel.At present common main axis of dilatation is based on pneumatic type, announce No. 290521 and U.S. US6 as TaiWan, China, 196,494B1 patent case, it mainly is made up of outer shaft, flexible piece, telescoping mechanism, flexible piece is inserted in the installation slotted eye of outer shaft and can be along outwards projection or toward interior withdrawal, the telescoping mechanism part mainly is the expansion that utilizes air bag, flexible piece projection dead block of slotted eye is installed.The shaft drying power of this type of expansion is pneumatic type, be commonly used in lighter load relatively, the former material weight that can batch is limited, is fit to batch the lighter raw materials of proportion such as plastic cement or stationery, the air cylinder of this driving power is the one-sided fixedly application of force again, and fixing expansion thrust is provided.In addition, also disclose a kind of mechanical main axis of dilatation mechanism in the China bulletin CN2561752Y patent case, its roller rest wheel and circular conical surface are done the expansion of caused by relative motion external diameter, but the area of contact of its running roller and circular conical surface is little, main axis of dilatation can't bear the greater weight load, so also can only be useful in the application of low load.In addition, China discloses and also discloses a kind of mechanical main axis of dilatation mechanism in No. 200810041798.9 patent case, be to reach expansion behavior with screw thread rotation, yet its type of drive can't accurately be controlled expansion strength, and the error as if because of part processing will cause main axis of dilatation both sides swelling force inequality.

Summary of the invention

The main axis of dilatation structure that the purpose of this invention is to provide a kind of high loading, unsteady hydraulic cylinder type.

The main axis of dilatation that the technological means that the present invention addresses the above problem provides comprises: an outer shaft, have an axle sleeve surface and an interior axis hole, this axle sleeve surface is provided with one first and runs through portion and one second and run through portion, this first runs through portion and second portion of running through has several perforation respectively, respectively this perforation all with should in axis hole communicate; Several cover plates are arranged at this first each perforation and this second each that runs through portion that runs through portion respectively and bore a hole; And telescoping mechanism, be arranged at axis hole in this, this telescoping mechanism has one first flexible module, one second flexible module and a dynamical element, this first flexible module and the second flexible module have several slide blocks and a push rod separately, this dynamical element is connected between these two push rods, this dynamical element can order about these two push rods along being somebody's turn to do moving axially of interior axis hole, respectively this slide block is respectively to being positioned at respectively this perforation and being combined with this cover plate respectively, respectively this slide block all has an inclined-plane, these two push rod peripheries have several inclined-planes, and respectively the inclined-plane of this slide block contacts the inclined-plane of these two push rods.

The invention has the beneficial effects as follows that the push rod that is in the telescoping mechanism of the present invention can provide the different swell increment of cover plate on main axis of dilatation both sides, can be according to paper tube material and internal diameter difference, regulate and control swell increment voluntarily, and the configuration of the expansion strength on both sides can be tending towards average, and paper tube is produced preferable relatively support effect.In addition, the load that main axis of dilatation of the present invention bears can be shared out equally by mechanism, and telescoping mechanism is not yielding, has high rigidity, and main axis of dilatation paper tube when high loading is rotated with high speed is difficult for getting loose and slides.

Description of drawings

Fig. 1 illustrates the three-dimensional exploded view of the embodiment of the invention.

Fig. 2 illustrates the three-dimensional combination figure of outer shaft inner member of the present invention.

Fig. 3 illustrates the birds-eye view after the embodiment of the invention combination.

Fig. 4 illustrates the forward sight 4-4 transfer cutaway view of Fig. 3.

Fig. 5 illustrates the side-looking 5-5 transfer cutaway view of Fig. 3.

Fig. 6 illustrates the swelling state generalized section of Fig. 4.

Fig. 7 illustrates the swelling state generalized section of Fig. 5.

The main element nomenclature:

Portion's 1111 perforation are run through on 1 outer shaft, 11 axle sleeves surface 111 first

112 second run through axis hole 2 cover plates in portion's 1121 perforation 12

21 grooves, 3 telescoping mechanisms, 31 first flexible modules

311 first pads, 3111 central shaft holes, 3112 radial grooves, 3113 through holes

312 first slide blocks, 3121 end faces, 3122 shoulders, 3123 compression elastic elements

3124 bottoms, 313 first push rods, 3131 axle portion, 3132 oblique cone portions

3133 portion's 3134 inclined-planes, 314 enclosing covers, 32 second flexible modules

321 second pads, 3211 central shaft holes, 3212 radial grooves, 3213 through holes

322 second slide blocks, 3221 end faces, 3222 shoulders, 3223 compression elastic elements

3224 bottoms, 323 second push rods, 3231 axle portion, 3232 oblique cone portions

3233 portion's 3234 inclined-planes, 324 enclosing covers, 33 dynamical elements

332 expansion link portions of 331 cylinder body portions, 333 hydraulic tubings, 4 bearing pins

The specific embodiment

For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, the preferred embodiment of cited below particularly creation, and conjunction with figs. are described in detail below:

The present invention is used for being fixed on paper tube or other cheaply in the tubing, and can support tube wall, produce enough abilities of batching tabular raw material, at first please refer to the three-dimensional combination figure of the outer shaft inner member of the present invention that three-dimensional exploded view, Fig. 2 of the embodiment of the invention that Fig. 1 illustrates illustrate, the forward sight 4-4 transfer cutaway view about Fig. 3 that birds-eye view, Fig. 4 after the embodiment of the invention combination that Fig. 3 illustrates illustrate, and the side-looking 5-5 transfer cutaway view about Fig. 3 that illustrates of Fig. 5.In the present embodiment, main axis of dilatation comprises: an outer shaft 1, several cover plates 2 and a telescoping mechanism 3.

This outer shaft 1 has axis hole 12 in the axle sleeve surface 11 and, this axle sleeve surface 11 is provided with one first and runs through portion 111 and one second and run through portion 112, this first runs through portion 111 and second runs through portion 112 and have several perforation 1111,1121 respectively with this, this first run through portion 111 respectively bore a hole 1111 and this second run through respectively boring a hole of portion 112 and 1121 be spaced set in this axle sleeve surface 11 along a circumference separately, and respectively this perforation 1111,1121 all with should in axis hole 12 communicate.

These several cover plates 2 be arranged at respectively this first run through portion 111 respectively bore a hole 1111 and this second run through portion 112 respectively bore a hole 1121.Respectively this cover plate 2 all has a surface, this surface is a cambered surface, and crooked radian that should the surface is identical with the crooked radian on this axle sleeve surface 11, respectively the surface of this cover plate 2 all has an anti-skid structure, this anti-skid structure can directly arrange several grooves 21 in this surface, or the application surface treatment technology is directly in this shaping surface great friction coefficient layer, or increases the friction force of this surface and paper tube or other pipe material inner wall faces to paste a great friction coefficient layer.

This telescoping mechanism 3 is arranged in this interior axis hole 12, and it is preferable in that relatively this first runs through portion 111 and this second position of running through between the portion 112, this telescoping mechanism 3 can be fixing for each cover plate 2, and when this telescoping mechanism 3 stretches respectively this cover plate 2 radially outward released by the axle center, make this cover plate 2 respectively protrude from this axle sleeve surface 11 of this outer shaft 1, and when this telescoping mechanism 3 shrank, this that makes that this cover plate 2 respectively is reset to this outer shaft 1 first ran through portion 111 and second runs through in those perforation 1111,1121 of portion 112 with this.

The telescoping mechanism 3 of above-described embodiment comprises: one first flexible module 31, one second flexible module 32 and a dynamical element 33.This first flexible module 31 and the second flexible module 32 all are arranged in this in axis hole 12, and this first flexible module 31 first runs through portion 111 and is radially contraposition with this, and 32 of this second flexible modules second run through portion 112 and are radially contraposition with this.These dynamical element 33 a preferable hydraulic actuating cylinder or air cylinders of being chosen as, and this dynamical element 33 is arranged in the middle of this first flexible module 31 and this second flexible module 32.Wherein, this dynamical element 33 has a cylinder body portion 331 and an expansion link portion 332, and this cylinder body portion 331 connects this first flexible module 31, and this expansion link portion 332 is hubbed at this second flexible module 32.Certainly, this first flexible module 31 need have a through hole 3113 at least or this second flexible module 32 need have a through hole 3213 at least, and this through hole 3113,3213 passes through for the hydraulic tubing 333 that connects this dynamical element 33 along being somebody's turn to do axially running through of interior axis hole 12.

This first flexible module 31 comprises: one first pad 311, several first slide blocks 312, one first push rod 313 and an enclosing cover 314.This first pad 311 is fixed in this in axis hole 12, and preferable and this first run through portion 111 and be radially contraposition.This first pad 311 has a central shaft hole 3111 and several radial grooves 3112 (with respect to aforementioned each 1111 position of boring a hole), this central shaft hole 3111 along should in axis holes 12 axially run through this first pad 311, respectively this radial groove 3112 along should in the radial array of axis hole 12 in these central shaft hole 3111 peripheries and interconnect, and respectively this radial groove 3112 is preferable first runs through respectively boring a hole of portion 111 and 1111 be radially contraposition with this.This enclosing cover 314 is those radial grooves 3112 of sealing axially.Respectively this first slide block 312 has an end face 3121, a shoulder 3122 and a bottom 3124, this end face 3121 and bottom 3124 lay respectively at the two-phase corresponding surface of this first slide block 312, this end face 3121 can supply respectively, and this cover plate 2 arranges thereon, and the bottom 3124 of this first slide block 312 is formed with an inclined-plane, this shoulder 3122 is and protrudes between this end face 3121 and the bottom 3124, and in this shoulder 3122 and should in be provided with a compression elastic element 3123 (as the compression spring) between the wall of axis hole 12, these 3124 formed inclined-planes, bottom are along the axioversion that is somebody's turn to do interior axis hole 12.This first push rod 313 has oblique cone portion 3132 and portion 3133 that an axle portion 3131, has several inclined-planes 3134 in regular turn, this first push rod 313 is arranged in this central shaft hole 3111 of this first pad 311, this axle portion 3131 is arranged in this enclosing cover 314, each inclined-plane 3134 of this oblique cone portion 3132 is along the axioversion that is somebody's turn to do interior axis hole 12, and being resisted against the respectively bottom 3124 of this first slide block 312, this one 3133 is arranged in the face of this second runs through a side of portion 112 and connects this cylinder body portion 331 of this dynamical element 33.

This second flexible module 32 comprises: one second pad 321, several second slide blocks 322, one second push rod 323 and an enclosing cover 324.This second pad 321 is fixed in this in axis hole 12, and preferable and this second run through portion 112 and be radially contraposition.This second pad 321 has a central shaft hole 3211 and several radial grooves 3212 (with respect to aforementioned each 1121 position of boring a hole), this central shaft hole 3211 along should in axis holes 12 axially run through this second pad 321, respectively this radial groove 3212 along should in the radial array of axis hole 12 in these central shaft hole 3211 peripheries and interconnect, and respectively this radial groove 3212 is preferable second runs through respectively boring a hole of portion 112 and 1121 be radially contraposition with this.This enclosing cover 324 is those radial grooves 3212 of sealing axially.Respectively this second slide block 322 has an end face 3221, a shoulder 3222 and a bottom 3224, this end face 3221 and bottom 3224 lay respectively at the two-phase corresponding surface of this second slide block 322, this end face 3221 can supply respectively, and this cover plate 2 arranges thereon, and the bottom 3224 of this second slide block 322 is formed with an inclined-plane, this shoulder 3222 is and protrudes between this end face 3221 and the bottom 3224, and in this shoulder 3222 and should in be provided with a compression elastic element 3223 (as the compression spring) between the wall of axis hole 12, these 3224 formed inclined-planes, bottom are along the axioversion that is somebody's turn to do interior axis hole 12.This second push rod 323 has oblique cone portion 3232 and portion 3233 that an axle portion 3231, has several inclined-planes 3234 in regular turn, this second push rod 323 is arranged in this central shaft hole 3211 of this second pad 321, this axle portion 3231 is arranged in this enclosing cover 324, each inclined-plane 3234 of this oblique cone portion 3232 is along the axioversion that is somebody's turn to do interior axis hole 12, and being resisted against the respectively bottom 3224 of this second slide block 322, this one 3233 is arranged in the face of this first runs through a side of portion 111 and connects this expansion link portion 332 of this dynamical element 33.

This of above-described embodiment first push rod 313 and this dynamical element 33 be connected and/or this second push rod 323 connected with being connected with a bearing pin 4 of this dynamical element 33, form the coupled condition that can do joint motions relatively, help to push against the mean allocation of stress.

See also the swelling state generalized section of Fig. 4 that Fig. 6 illustrates, and the swelling state generalized section of Fig. 5 of illustrating of Fig. 7.Structure according to above-described embodiment, when the expansion link portion 332 of this dynamical element 33 upholds, first push rod 313 of this first flexible module 31 axially can be released, respectively these inclined-plane 3134 ejections of the oblique cone portion 3132 of this first push rod 313 are the bottom 3124 of this first slide block 312 respectively, order respectively this first slide block 312 is outwards opened towards the footpath by the axle center, can make to be fixedly arranged on the axle sleeve surface 11 that the cover plate 2 of these first slide block, 312 end faces 3121 respectively protrudes from this outer shaft 1; The same time, because dynamical element 33 is not to be fixed on this outer shaft 1, float between this first flexible module 31 and this second flexible module 32 but adopt, so in this first flexible module 31 of pushing and pressing, also can push against second push rod 323 of this second flexible module 32 simultaneously, this cover plate 2 can be released the axle sleeve surface 11 of this outer shaft 1 equally, form radial expansion; When the expansion link portion 332 of dynamical element 33 shrinks, this first push rod 313 is regained simultaneously with this second push rod 323, this moment, respectively 322 of this first slide block 312 and this second slide blocks respectively radially slided towards the axle center by this compression elastic element 3123,3223 elastic force effect, and made the respectively axle sleeve surface 11 of these cover plate 2 these outer shafts 1 of withdrawal.

Characteristics of the present invention are that the paper tube manufacturing material degree of uniformity that generally is sheathed on this main axis of dilatation differs, the size of internal diameter is also slightly variant, dynamical element in the telescoping mechanism of the present invention adopts (free-standing) design of floating, so can provide the cover plate on these main axis of dilatation both sides different swell incremenies, can regulate and control swell increment voluntarily according to paper tube material and internal diameter difference, and according to design of the present invention, the expansion strength configuration on its both sides can be tending towards average, and paper tube is produced preferable relatively support effect.In addition, the load that main axis of dilatation of the present invention bears can be shared out equally by push rod, slide block and pad, and telescoping mechanism is not yielding, and structure design has high rigidity, and main axis of dilatation is difficult for getting loose and slides at high loading paper tube when rotating at a high speed.Again, propulsion source of the present invention is hydraulic actuating cylinder, cooperates the application on push rod inclined-plane and slider bottom inclined-plane, and relatively large swelling force and the characteristics of bearing high loading can be provided.

Claims

1. main axis of dilatation is characterized in that comprising:

An outer shaft has axle sleeve surface and an interior axis hole, and this axle sleeve surface is provided with one first to be run through portion and one second and run through portion, and this first runs through portion and this second portion of running through has several perforation respectively, and respectively this perforation all communicates with this interior axis hole;

Several cover plates are arranged at this first each perforation and this second each that runs through portion that runs through portion respectively and bore a hole; And

A telescoping mechanism, be arranged at axis hole in this, this telescoping mechanism has one first flexible module, one second flexible module and a dynamical element, this first flexible module and the second flexible module have several slide blocks and a push rod separately, this dynamical element is connected between these two push rods, this dynamical element can order about these two push rods along moving axially by interior axis hole, respectively this slide block is respectively to being positioned at respectively this perforation and being combined with this cover plate respectively, respectively this slide block all has an inclined-plane, these two push rod peripheries have several inclined-planes, and respectively the inclined-plane of this slide block contacts the inclined-plane of these two push rods, and respectively this slide block all has an end face, a shoulder and a bottom, this end face and bottom lay respectively at two corresponding of this slide block, respectively this cover plate is incorporated into this end face, the inclined-plane of this slide block is positioned at this bottom, and this shoulder protrudes between this end face and the bottom, and be provided with a compression elastic element between this shoulder and this interior axis hole wall.

2. main axis of dilatation as claimed in claim 1 is characterized in that, respectively the inclined-plane of the inclined-plane of this slide block and these two push rods all along should in the axioversion of axis hole, and these two push rods can promote this inclined-plane respectively along should in the moving radially of axis hole.

3. main axis of dilatation as claimed in claim 1 is characterized in that, this first each perforation and this second each perforation that runs through portion that runs through portion is arranged on this axle sleeve surface along a circumferential arrangement separately.

4. as claim 1,2 or 3 described main axis of dilatations, it is characterized in that, this first flexible module and the second flexible module all have a pad in addition, this pad is fixed in axis hole in this, this pad has a central shaft hole and several radial grooves, this central shaft hole along should in axis hole axially run through this pad, respectively this radial groove along should in the radial array of axis hole in this central shaft hole periphery and interconnect, this push rod penetrates this central shaft hole, and respectively this slide block is inserted respectively this radial groove.

5. main axis of dilatation as claimed in claim 4 is characterized in that, this first flexible module and the second flexible module all have an enclosing cover in addition, and this enclosing cover is arranged at this pad and seals respectively this radial groove.

6. main axis of dilatation as claimed in claim 5, it is characterized in that, this push rod has an axle portion, an oblique cone portion and a seat portion, this axle portion and seat portion are positioned at the two ends of this push rod separately, this axle portion penetrates this enclosing cover, this one articulates this dynamical element, and this oblique cone portion is made of respectively this inclined-plane that is arranged at this push rod periphery.

7. main axis of dilatation as claimed in claim 4 is characterized in that, this pad has at least one through hole, this through hole along should in axis hole axially run through this pad.

8. as claim 1,2 or 3 described main axis of dilatations, it is characterized in that respectively this cover plate has a surface, this surface is a cambered surface, and crooked radian that should the surface is identical with this axle sleeve surface.

9. main axis of dilatation as claimed in claim 8 is characterized in that, this surface has anti-skid structure.

10. main axis of dilatation as claimed in claim 9 is characterized in that, several grooves that this anti-skid structure arranges for this surface.

11. main axis of dilatation as claimed in claim 9 is characterized in that, this anti-skid structure utilizes the great friction coefficient layer of process for treating surface direct forming for this surface.

12. main axis of dilatation as claimed in claim 9 is characterized in that, the great friction coefficient layer that this anti-skid structure pastes for this surface.