CN102923505A - Paper delivering roller - Google Patents
Paper delivering roller Download PDFInfo
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- CN102923505A CN102923505A CN2012100675243A CN201210067524A CN102923505A CN 102923505 A CN102923505 A CN 102923505A CN 2012100675243 A CN2012100675243 A CN 2012100675243A CN 201210067524 A CN201210067524 A CN 201210067524A CN 102923505 A CN102923505 A CN 102923505A
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- Prior art keywords
- internal layer
- mentioned
- rubber
- feeding
- paper
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Links
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Images
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- Delivering By Means Of Belts And Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a paper delivering roller which is not easy to generate bad paper delivery and sound. The paper delivering roller maintains good paper delivery for longer time and is not required to be bonded on an inner layer and an outer layer through binder. Multiple hollow portions (13) are formed on the periphery containing a cylindrical inner layer (2) and stacked on the inner layer (2) and the interior of the inner layer of a paper delivering roller (1) of the outer layer (5) of the peripheral face (6) contacting the paper. The multiple hollow portions (13) do not reach the interface (7) of the outer layer (5).
Description
Technical field
The present invention relates in electrostatic duplicator and various chopping machines etc., be used for the feeding-in roll of paper feeding.
Background technology
Such as in the paper advance mechanism of the equipment class such as electrostatic duplicator, laser printer, common paper facsimile unit and their compounding machine or ink jet printer, ATM (Automatic Teller Machine) (ATM), various feeding-in rolls are installed.As above-mentioned feeding-in roll, utilize friction to carry the paper feed roller of paper, conveying roller, air roll (Platen Roller), exit roller etc. such as enumerating on one side with paper (comprise plastic film etc., below identical) contact rotation on one side.
As above-mentioned feeding-in roll, the following roller of normal operation in the past: it possesses the non-porous matter cylindrical body such as the individual layer that is formed by various rubber such as natural rubber (NR), poly-urethane rubber, ethylene-propylene-diene copolymer rubber (EPDM), poly-norbornene rubber, silaatic, chlorinated polyethylene rubbers, and is inserted through the through hole at center of above-mentioned cylindrical body and the axle that is formed by metal etc. that is fixed.
But above-mentioned roller has following problem: because wearing and tearing and the surface cunning that flattens, friction coefficient declines to a great extent when logical paper number increases, and it is bad that paper feeding occurs easily.
In addition, also there is following problem: occur easily to slip over so-called " ring sound " phenomenon that the outer peripheral face of the roller that friction coefficient descends is sounded because of paper.
The ring sound is because the absorption of vibrations of above-mentioned cylindrical body is insufficient, and paper slips over the outer peripheral face of roller and the vibration that produces is sent to axle via cylindrical body as mentioned above, and sound causes thereby produce.
Consisted of the outer field multi-ply construction more than 2 layers of feeding-in roll outer peripheral face by the periphery of above-mentioned cylindrical body being made the internal layer that comprises tubular and being laminated in above-mentioned internal layer in research, and general's internal layer is wherein made and is compared soft outer layer, thereby reduce whole hardness, it is bad that the area of contact that increases outer peripheral face and paper prevents paper feeding, and utilize above-mentioned internal layer to absorb to vibrate and suppress to ring the technology (with reference to patent documentation 1,2 etc.) of sound.
But, the ring sound in the time of can not significantly reducing logical paper in the above-mentioned formation.
In patent documentation 3, put down in writing a kind of feeding-in roll, be by stacked tubular for example 2 layers rubber layer and therein the outer peripheral face of internal layer form the annular knurl groove, thereby the feeding-in roll in space is set between the skin of above-mentioned annular knurl groove and its outer circumferential side.
According to described feeding-in roll, because can improving its absorption of vibrations than the hardness that reduces more significantly up to now internal layer in above-mentioned space, so, can reduce significantly the ring sound.
But above-mentioned feeding-in roll is because the hardness of above-mentioned shape and outer peripheral face is comparatively uneven.That is, in outer peripheral face, produce the space domain of the existence in space because be formed with the annular knurl groove in the inboard, compare with the zone that does not have above-mentioned space, it is large that the reduction degree of the hardness of its outer peripheral face becomes.
Thus, because above-mentioned hardness is uneven, there are the following problems: when logical paper, what generation can not transmit correctly that not transmitting of paper or overlapping paper more than 2 transmits easily foldedly the paper feeding such as send bad.
In addition, also there is following problem in above-mentioned feeding-in roll: in the zone that has the annular knurl groove, internal layer does not contact with skin, the area of contact of two interlayers is little, so for skin is fixed in internal layer reliably, it is above-mentioned two-layer to bond by adhesive agent, therefore, use the part of adhesive agent and need the part of bonding operation to make the productivity losing of feeding-in roll, thereby increase manufacturing cost.
Patent documentation 1: TOHKEMY 2007-137539 communique
Patent documentation 2: TOHKEMY 2008-114935 communique
Patent documentation 3: TOHKEMY 2007-15792 communique
Summary of the invention
The object of the present invention is to provide a kind of feeding-in roll, it is not easy to occur, and paper feeding is bad, ring sound etc., and can be through than keeping good paper feeding between more long-term up to now, and need not to bond internal layer with outer by adhesive agent.
The present invention is feeding-in roll, it is characterized in that, comprises the internal layer of tubular and is laminated in the periphery of above-mentioned internal layer and consists of the skin of the outer peripheral face of above-mentioned feeding-in roll, and wherein, above-mentioned internal layer within it section has a plurality of hollow bulbs that do not arrive itself and outer field interface.
According to the present invention, as described above, in the inside of internal layer, in the mode that does not arrive itself and outer field interface a plurality of hollow bulbs are set, therefore must be across internal layer, so can reduce the position of above-mentioned hollow bulb to the impact of outer peripheral face hardness between above-mentioned hollow bulb and the skin.
That is, can reduce at the complete cycle of outer peripheral face the inequality of hardness, transmit or not of paper and the bad problem of paper feeding such as send with the overlapping transmission of paper more than 2 folded so can prevent from when logical paper, occuring mal.
And, by hollow bulb is set, can significantly reduce the hardness of internal layer, so can reduce whole hardness, increase the area of contact of outer peripheral face and paper, thereby prevent the generation that paper feeding is bad, and, can improve the absorption of vibrations of above-mentioned internal layer, thereby significantly reduce the ring sound when leading to paper.
And internal layer is in contact with one another at its complete cycle with outer, so even do not bond by adhesive agent, also can mutually fix reliably above-mentioned two-layer.
Therefore, according to the present invention, can provide a kind of and be not easy to occur that paper feeding is bad, problems such as ring sound etc., can be through keeping good paper feeding than between more long-term up to now, and need not by adhesive agent bond internal layer and outer field feeding-in roll.
But the present invention gets rid of fully by adhesive agent bond internal layer and outer field situation.Can be according to circumstances by adhesive agent bond internal layer and skin, thereby make above-mentioned two-layer more firmly integratedly, improve the durability of feeding-in roll.Even in this case, the effect that also can obtain with the adhesive agent of hoot compared with the past.
Above-mentioned internal layer is preferably formed by following composite: the cross-linking agent that is selected from least a kind of rubber constituent in diene series rubber and the ethylene propylene rubber is dispersed in by dynamic crosslinking contains the composition for thermoplastic elastomer that forms in styrene series thermoplastic elastomer and the polyacrylic resin matrix.
Compare with rubber phase, above-mentioned composition for thermoplastic elastomer has good forming characteristics, has the such internal layer of complicated shape of a plurality of hollow bulbs that does not arrive itself and outer field interface such as can be in the situation that the bad grade of moulding does not occur producing its inside as described above with high finished product rate by extrusion molding etc.
In addition, above-mentioned composition for thermoplastic elastomer has the flexibility close with rubber, so by section within it a plurality of hollow bulbs are set, not only can give equal with rubber or flexibility more than it and the whole hardness that reduces to internal layer, increase the area of contact of outer peripheral face and paper, thereby can prevent the generation that paper feeding is bad, and can give good absorption of vibrations equal with rubber or more than it to above-mentioned internal layer, thereby can prevent more reliably the sound that rings.
Above-mentioned skin is preferably by the cross-linking agent that is selected from least a kind of rubber in ethylene propylene rubber, silaatic and the poly-urethane rubbers such as EPDM and form.
Not only friction coefficient is large for the skin that is formed by above-mentioned rubber cross thing, the paper feeding excellent performance, and have cross-linked structure and have high abrasion resistance, so can the above-mentioned good paper feeding performance of long term maintenance.
Preferably by above-mentioned internal layer with axial vertical direction cross section in the sectional area of above-mentioned hollow bulb and the sectional area of the solid part beyond the above-mentioned hollow bulb, the hollow rate of trying to achieve according to formula (1) is 10%～50%.
Mathematical expression 1
During the not enough above-mentioned scope of hollow rate, the following effect that possibly can't obtain fully causes by hollow bulb is set: namely, reduce the hardness of internal layer, increase the area of contact of outer peripheral face and paper, thereby prevent the bad effect of paper feeding, and the absorption of vibrations that improves above-mentioned internal layer, thereby the effect of the ring sound when reducing logical paper.
On the other hand, under hollow rate surpassed the situation of above-mentioned scope, even form hollow bulb in the inside of internal layer not arrive its mode with outer field interface, the hardness that also might increase outer peripheral face was uneven, and easy generation does not transmit or folds and the paper feeding such as send bad during logical paper.
Relative therewith, by making hollow rate in above-mentioned scope, can suppress that the hardness of outer peripheral face is uneven to become large, and reduce as far as possible the hardness of internal layer and can further strengthen the effect of the ring sound when preventing the generation that paper feeding is bad and reducing logical paper.
According to the present invention, can provide a kind of and be not easy to occur that paper feeding is bad, ring sound etc., and can be through keeping good paper feeding than between more long-term up to now, and need not by adhesive agent bond internal layer and outer field feeding-in roll.
Description of drawings
Fig. 1 is the block diagram of outward appearance of an example of the embodiment of expression feeding-in roll of the present invention.
Fig. 2 consists of the skin of feeding-in roll of above-mentioned example and the section drawing of internal layer.
Fig. 3 is the section drawing that amplifies the part of above-mentioned internal layer.
Nomenclature
1... feeding-in roll; 2... internal layer; 3... through hole; 4... axle; 5... outer; 6... outer peripheral face; 7... interface; 8... outer cylinder body; 9... inner barrel; 10... outer peripheral face; 11... inner peripheral surface; 12... connecting part; 13... hollow bulb; L1... center shaft; P1... plane; P2... face direction; θ ... angle
The specific embodiment
＜feeding-in roll 〉
Fig. 1 is the block diagram of outward appearance of an example of the embodiment of expression feeding-in roll of the present invention.Fig. 2 consists of the skin of feeding-in roll of above-mentioned example and the section drawing of internal layer.Fig. 3 is the section drawing that amplifies the part of above-mentioned internal layer.
With reference to Fig. 1, this routine feeding-in roll 1 possesses the internal layer 2 of tubular, the axle 4 of through hole 3 that is inserted through above-mentioned internal layer 2 centers and the skin 5 that is laminated in the tubular of above-mentioned internal layer 2 peripheries.Above-mentioned outer 5 outside face is the outer peripheral face that contacts with paper 6 of feeding-in roll 1.
Above-mentioned axle 4 is such as being formed by metal, pottery, hard resin etc.
With reference to Fig. 2, Fig. 3, in the situation of example in the drawings, internal layer 2 possess the interface 7 that consists of above-mentioned internal layer 2 and outer 5 outer cylinder body 8, be provided in and have above-mentioned through hole 3 and external diameter at the center than the little inner barrel 9 of the internal diameter of above-mentioned outer cylinder body 8 and a plurality of tabular connecting part 12 that arrives the inner peripheral surface 11 of outer cylinder bodies 8 from the outer peripheral face 10 of above-mentioned inner barrel 9 in the above-mentioned outer cylinder body 8.
Consisting of above-mentioned outer cylinder body 8, inner barrel 9 and the connecting part 12 of internal layer 2, as described later, for example is to be formed by thermoplastic elastomer.Namely, internal layer 2 for example can form in the following manner: by with the composition for thermoplastic elastomer extrusion molding, make above-mentioned each integrally, form after the cylindrical body have such as Fig. 2, cross sectional shape shown in Figure 3, above-mentioned cylindrical body is cut into the length etc. of regulation and form.
With reference to Fig. 1～Fig. 3, connecting part 12 forms substantially planar in internal layer 2 total lengths.
And each connecting part 12 is to make separately face P2 direction have certain angle θ with respect to a plane P 1 by above-mentioned central axis L 1 to intersect and set.
And a plurality of connecting parts 12 are centered by central axis L 1, on the circumferencial direction of outer cylinder body 8 and inner barrel 9 uniformly-spaced to set.
In addition, each connecting part 12 forms respectively equal thickness.
By above-mentioned a plurality of connecting part 12 is set, thereby a plurality of hollow bulbs 13 that separated by above-mentioned connecting part 12 are set between outer cylinder body 8 and inner barrel 9.
The radially foreign side side of each hollow bulb 13, on the complete cycle of internal layer 2, not arrive itself and the mode at outer 5 interface 7, the outer cylinder body 8 certain by thickness covers.
In addition, as described above, because along the circumferential direction uniformly-spaced to set connecting part 12, and each connecting part 12 is set up obliquely in the mode that has identical certain angle θ with respect to a plane P 1 by central axis L 1, and thickness equally forms, so for each hollow bulb 13, congruent separately with the cross sectional shape of central axis L 1 vertical direction (Fig. 2, shown in Figure 3).
And as described above, the connecting part 12 with each hollow bulb 13 separates arranges in the mode that tilts certain angle θ with respect to the plane P 1 by central axis L 1, so that can easily be out of shape to radially inner side.
Therefore, according to the feeding-in roll 1 of the example among the figure, can reduce the position of above-mentioned hollow bulb 13 to the impact of its outer peripheral face 6 hardness.That is, it is uneven to reduce hardness at the complete cycle of above-mentioned outer peripheral face 6, thus can prevent from when logical paper, occuring transmitting improperly paper not transmitting and the paper of overlapping transmission more than 2 folded such as send bad at the paper feeding.
Preferably by the total sectional area of the above-mentioned hollow bulb 13 in above-mentioned internal layer 2 and cross section central axis L 1 perpendicular direction direction and the sectional area of the solid part beyond the above-mentioned hollow bulb 13, the hollow rate of trying to achieve according to formula (1) is 10%～50%.
During the not enough above-mentioned scope of hollow rate, the following effect that possibly can't obtain fully obtains by hollow bulb 13 is set, namely, reduce the hardness of internal layer 2, increase the area of contact of outer peripheral face 6 and paper, thereby prevent the bad effect of paper feeding, and improve the absorption of vibrations of above-mentioned internal layer 2 and the effect of ring sound when reducing logical paper.
On the other hand, surpass in the situation of above-mentioned scope in hollow rate, even form hollow bulb 13 in the inside of internal layer 2 not arrive its mode with outer 5 interface 7, the hardness that also might increase outer peripheral face 6 is uneven, thereby easy generation does not transmit or foldedly the paper feeding such as send bad during logical paper.
Relative therewith, by making hollow rate in above-mentioned scope, can suppress uneven the change greatly of hardness of outer peripheral face 6, and can reduce as far as possible the hardness of internal layer 2, prevent the generation that paper feeding is bad and the effect that reduces the ring sound when leading to paper thereby can further strengthen.
Outer 5 such as can be by the cross-linking agent that is selected from least a kind of rubber in ethylene propylene rubber, silaatic and the poly-urethane rubber such as EPDM, and forming thickness is certain tubular.
Above-mentioned outer 5 for example can form in the following manner: to by pressurizeing crosslinked above-mentioned rubber it being shaped to tubular and making it the crosslinked shell that forms (cylindrical body), further grind to become as required the external diameter of regulation, and, be cut into the length etc. of regulation and form.
Above-mentioned internal layer 2 and outer 5 is formed respectively independently, and pass through at outer 5 interior chimeric internal layers 2 and with two-layer laminate.Thus can the two-layer thickness ratio of strict control, suppress to prevent the effect generation deviation of the bad and ring sound of paper feeding etc., the feeding-in roll 1 that has all the time constant return is provided.
From omitting using and boning operation and the capacity rating aspect that improves feeding-in roll 1 is considered of adhesive agent, two-layer preference forms such as the external diameter with internal layer 2 and is a bit larger tham outer 5 internal diameter, in above-mentioned outer 5, be pressed into internal layer 2, utilize the poor and elastic force of two-layer diameter and interfix.
But internal layer 2 and outer 5 can bond by adhesive agent.At this moment, can make above-mentioned two-layer more firmly integratedly, improve the durability of feeding-in roll 1.At this moment, compared with the past, even the effect of using the adhesive agent of hoot also can access.
Outer 5 outer peripheral face 6, the smooth barrel surface that in the example of figure, forms, but in order to improve with the friction coefficient of paper or to suppress reduction because of the friction coefficient that causes adhering to of paper powder, can carry out annular knurl processing, the processing of erosion line etc. to above-mentioned outer peripheral face 6.In addition, can will be formed at internal layer 2 and outer 5 along the Zhou Fangxiang of outer peripheral face 6 or the axial groove of central axis L 1.
＜composition for thermoplastic elastomer 〉
As described above, internal layer 2 is preferably formed by composition for thermoplastic elastomer in above-mentioned each one.
As above-mentioned composition for thermoplastic elastomer, can preferably use following composite: for example, the cross-linking agent that is selected from least a kind of rubber constituent in diene series rubber and the ethylene propylene rubber is dispersed in by dynamic crosslinking contains the composition for thermoplastic elastomer that forms in styrene series thermoplastic elastomer and the polyacrylic resin matrix.
Above-mentioned composition for thermoplastic elastomer is to be undertaken mixingly by the compound limit that limit heating contains above-mentioned resin matrix and uncrosslinked rubber constituent, and the rubber constituent dynamic crosslinking is modulated.
As above-mentioned middle styrene series thermoplastic elastomer, be preferably the styrene series thermoplastic elastomer that is added with hydrogen.Because the above-mentioned styrene series thermoplastic elastomer that is added with hydrogen makes two keys saturated by adding hydrogen, so not only soft, flexibility are excellent, and durability is also excellent.Therefore, can effectively suppress to occur elastic force and weaken etc., can improve internal layer 2 or even durability feeding-in roll 1.
In addition, the above-mentioned styrene series thermoplastic elastomer of hydrogen that is added with is owing to not containing two keys, so when making the rubber constituent dynamic crosslinking, can not hinder above-mentioned crosslinked, self can not occur crosslinked, so can give desirable plasticity and flexibility to the composition for thermoplastic elastomer behind the dynamic crosslinking.
As the above-mentioned styrene series thermoplastic elastomer that is added with hydrogen, be preferably the hydrogen additive that is selected from least a kind of styrene series thermoplastic elastomer in styrene-butadiene-styrene (SBS), styrene-isoprene-styrene copolymer-(SIS), styrene-ethylene/propylene copolymer (SEP), styrene-ethylene/propylene-styrene copolymer (SEPS), styrene-ethylene/butylene-styrene copolymer (SEBS) and the styrene-ethylene-ethylene/propene-styrol copolymer (SEEPS).Be particularly preferably the hydrogen additive of SEEPS.
Polypropylene plays the effect of the processability when improving the composition for thermoplastic elastomer extrusion molding.As above-mentioned polypropylene, except the homopolymer type that can enumerate polypropylene only, can also enumerate in order to improve polyacrylic low-temperature embrittlement of above-mentioned homopolymer type etc. and make one kind or two or more in the various polypropylene such as random or periodic copolymer type that other the olefin-copolymerization such as ethene of some amounts forms.
The above-mentioned mixing ratio that contains styrene series thermoplastic elastomer and polyacrylic resin matrix, be more than 10 mass parts in preferred every rubber constituent 100 mass parts, particularly preferably more than 20 mass parts, be below 100 mass parts in preferred every rubber constituent 100 mass parts, particularly preferably below 75 mass parts.
During the not enough above-mentioned scope of the mixing ratio of resin matrix, very few as the amount of the above-mentioned resin matrix of themoplasticity composition, so possibly can't give good themoplasticity to composition for thermoplastic elastomer.In addition, possibly the cross-linking agent of rubber constituent can't be dispersed in the resin matrix well.
On the other hand, surpass in the situation of above-mentioned scope in the mixing ratio of resin matrix, the content of the cross-linking agent of rubber constituent tails off relatively, so possibly can't give good caoutchouc elasticity to internal layer 2.
And with styrene series thermoplastic elastomer and polypropylene during as above-mentioned resin matrix, the mixing ratio of resin matrix is this total mixing ratio of 2 kinds.
In addition, in above-mentioned 2 kinds of paralled systems, polyacrylic mixing ratio, be more than 5 mass parts in preferred every styrene series thermoplastic elastomer 100 mass parts, particularly preferably more than 10 mass parts, be below 100 mass parts in preferred every styrene series thermoplastic elastomer 100 mass parts, particularly preferably below 80 mass parts.
When polyacrylic mixing ratio surpasses above-mentioned scope, possibly can't obtain fully the effect of the processability when cooperating the previously described raising composition for thermoplastic elastomer extrusion molding that above-mentioned polypropylene obtains.In addition, surpass in the situation of above-mentioned scope in polyacrylic mixing ratio, the content of styrene series thermoplastic elastomer tails off relatively, so the flexibility of internal layer 2 may reduce.
As diene series rubber, such as enumerating natural rubber (NR), isoprene rubber (IR), butaprene (BR), styrene-butadiene copolymer rubber (SBR), poly-chloroprene rubber (CR), acrylonitrile-butadiene copolymer rubber (NBR) etc.In addition, as ethylene propylene rubber, such as enumerating ethylene-propylene copolymer rubber (EPM), ethylene-propylene-diene copolymer rubber (EPDM) etc.As rubber constituent, can use separately wantonly a kind in the above-mentioned rubber, also two or more kinds may be used uses.
EPDM particularly preferably.The main chain of EPDM is made of satisfied hydrocarbon, does not contain two keys, so in high-concentrated ozone atmosphere, comprise under the environment such as ultraviolet irradiation, even long-time exposure the, the also difficult fracture that causes main chain.Therefore, can improve the ozone resistance, ultra-violet resistance, resistance to effect of heat etc. of internal layer 2.Preferred EPDM uses separately, but also may be used EPDM and other rubber constituent, and at this moment, the ratio that preferred EPDM accounts for the integral body of rubber constituent is more than the 50 quality %, particularly preferably more than the 80 quality %.
When making as described above the rubber constituent dynamic crosslinking, in the compound of above-mentioned rubber constituent and matrix resin, will cooperate to be used for making the crosslinked crosslinking agent of rubber constituent.As crosslinking agent, the preferred resin crosslinking agent.
Resin cross-linking agent is to wait the synthetic resin that makes rubber constituent generation cross-linking reaction by heating, have following advantage: unlike sulfur-crosslinked system (sulphur and crosslinking accelerator etc. and be) bloom occurs like that, and can also reduce the compressive permanent set of the rubber constituent after crosslinked and the reduction of mechanical specialities, can improve durability.
In addition, compare with sulfur-crosslinked system, use resin cross-linking agent then can shorten crosslinking time.Therefore, for example the compound limit of heating each composition that contains rubber constituent in extruder, limit is carried out mixingly when making it dynamic crosslinking, can carry out fully dynamic crosslinking in the short time in being trapped in above-mentioned extruder.
As resin cross-linking agent, be preferably and be selected from phenol resin, melamine formaldehyde resin, triazine formal dehyde condensate, and in the hexamethoxymethyl melamine resin at least a kind, particularly preferably phenol resin.
In addition, as phenol resin, preferably by the phenols such as phenol, alkyl phenol, cresols, xylenol or resorcinol and the aldehydes such as formaldehyde, acetaldehyde or furfural are reacted the various phenol resins that synthesize.Can use in the aldehyde unit of phenol resin bonding at least that the halogenation phenol resin of 1 halogen atom is arranged.
Especially the alkylphenol-formaldehyde resin that obtains of the alkyl phenol by will being connected with alkyl in ortho position or the contraposition of benzene and formaldehyde reaction, the intermiscibility of itself and rubber constituent is excellent, and is imbued with reactivity, can make the time opening of cross-linking reaction in advance, so preferred.
As the alkyl of alkylphenol-formaldehyde resin, preferred carbon number is 1～10 alkyl, for example methyl, ethyl, propyl group or butyl.In addition, also preferably use the halide of alkylphenol-formaldehyde resin.
And, also can use modification alkyl phenolic resin that sulfuration p-t-butyl phenol and aldehydes addition condensation form or alkylphenol sulfide resin as resin cross-linking agent.
Being more than 2 mass parts in preferred every rubber constituent 100 mass parts of the mixing ratio of resin cross-linking agent, being particularly preferably more than 5 mass parts, is below 20 mass parts in preferred every rubber constituent 100 mass parts, is particularly preferably below 15 mass parts.
During the not enough above-mentioned scope of the mixing ratio of resin cross-linking agent, the crosslinked of rubber constituent becomes insufficient, so possibly can't give good mechanical specialities, durability to internal layer 2.On the other hand, surpass in the situation of above-mentioned scope in the mixing ratio of resin cross-linking agent, it is really up to the mark that rubber constituent becomes, so the flexibility of internal layer 2 may reduce.
In order suitably to carry out dynamic crosslinking, also can in the compound of above-mentioned resin matrix and rubber constituent, cooperate crosslinking coagent (crosslinking active agent).As crosslinking coagent, can enumerate metallic compound, such as zinc oxide, zinc carbonate etc., be particularly preferably zinc oxide (zinc white).
Be more than 0.01 mass parts in preferred every rubber constituent 100 mass parts of the mixing ratio of crosslinking coagent (crosslinking active agent), particularly preferably more than 0.1 mass parts, be below 10 mass parts in preferred every rubber constituent 100 mass parts, particularly preferably below 5 mass parts.
In addition, can in said mixture, cooperate soften flux.Soften flux has easy compounding mixture when making the rubber constituent dynamic crosslinking, and the cross-linking agent of above-mentioned rubber constituent is more small and be scattered in equably effect in the resin matrix and the effect with the flexibility that improves internal layer 2.
As above-mentioned soften flux preferred oil, plasticizer.Wherein as oil, be preferably mineral oil such as being selected from paraffin series, naphthene series, fragrant family, the synthetic oil that is formed by the hydrocarbon system oligomer, and in the technical oil at least a kind.In addition, as synthetic oil, for example be preferably at least a kind in the noncrystalline oligomer that is selected from the oligomer of the oligomer of alpha-olefin, butylene and ethene and alpha-olefin.
In addition, as plasticizer, for example be preferably at least a kind that is selected from dioctyl phthalate (DOP), dibutyl phthalate (DBP), di-n-octyl sebacate and the dioctyl adipate.
Particularly preferably paraffin series oil as above-mentioned paraffin series oil, can use base oil refining from mineral oil (crude oil) to be the various paraffin series oil of paraffin series.
Being more than 10 mass parts in preferred every rubber constituent 100 mass parts of the mixing ratio of soften flux, more than 20 mass parts, is below 250 mass parts in preferred every rubber constituent 100 mass parts, particularly preferably below 200 mass parts particularly preferably.
During the not enough above-mentioned scope of the mixing ratio of soften flux, possibly can't obtain fully the previously described effect by cooperating above-mentioned soften flux to obtain.In addition, even mixing ratio surpasses above-mentioned scope, can not obtain better effect, and excessive soften flux may infiltrate outer peripheral face, the inner peripheral surface of internal layer 2, can hinder by outer 5 and axle 4 be pressed into carry out fixing etc.
In containing the composition for thermoplastic elastomer of above-mentioned each composition, can further cooperate extending agent.The extending agent performance improves the function of the mechanical strength of internal layer 2.
As above-mentioned extending agent, can enumerate one kind or two or more in carbon black, clay, talcum, calcium carbonate, two alkali formula phosphites (DLP), basic magnesium carbonate, titanium oxide, aluminium oxide, the monox etc.
Being more than 1 mass parts in preferred every rubber constituent 100 mass parts of the mixing ratio of extending agent, more than 3 mass parts, is below 10 mass parts in preferred every rubber constituent 100 mass parts, particularly preferably below 5 mass parts particularly preferably.
During the not enough above-mentioned scope of the mixing ratio of extending agent, possibly can't obtain fully the effect by the mechanical strength that cooperates the raising internal layer 2 that above-mentioned extending agent obtains.In addition, surpass in the situation of above-mentioned scope in mixing ratio, the flexibility of internal layer 2 may reduce.
And with the extending agent more than 2 kinds during as extending agent, above-mentioned mixing ratio is its total mixing ratio.
In addition, in composition for thermoplastic elastomer, can cooperate in the proper ratio at least a kind of additive that is selected from foaming agent, ageing resistant, antioxidant, ultraviolet absorbent, lubricant, pigment, antistatic agent, fire retardant, neutralizing agent, nucleating agent and the bubble preventing agent.
During the modulation composition for thermoplastic elastomer, as previously explained, the compound that further cooperates resin cross-linking agent, crosslinking coagent (crosslinking active agent), soften flux etc. to form in the above-mentioned resin matrix of limit subtend and the uncrosslinked rubber constituent heats, the limit is carried out mixing, the limit is dispersed in the resin matrix above-mentioned rubber constituent minutely, and the limit makes it dynamic crosslinking.
Mixingly can use extruder, Banbury mixer, kneading machine etc., be particularly preferably extruder.When using extruder; can be in the whorl of above-mentioned extruder; the limit adds hot mixt continuously; the mixing rubber constituent dynamic crosslinking that makes is carried out on the limit; thereby modulate composition for thermoplastic elastomer; above-mentioned composition for thermoplastic elastomer can be extruded successively from spray nozzle front end, be delivered to continuously subsequent processing (such as granular operation etc.), so can improve the capacity rating of composition for thermoplastic elastomer.
The preferred rubber composition carries out dynamic crosslinking in the presence of halogen.Therefore, can use the resin cross-linking agent of halogenation.In addition, also can add the halogens such as butter of tin, ferric trichloride, the dichloride copper property supplied with material.
Then, the composition for thermoplastic elastomer that modulates is supplied to for the cylindrical body as the basis of internal layer 2 is carried out in the extrusion shaping machine of extrusion molding, die head by the punch die that is connected with the front end of the whorl of above-mentioned extrusion shaping machine, extrusion molding is tubular, formation has after the cylindrical body of above-mentioned Fig. 2, cross sectional shape shown in Figure 3, by above-mentioned cylindrical body being cut into the length of regulation, thereby form internal layer 2.
The condition of extrusion molding can be with in the past identical.For example extrusion temperature (design temperature of whorl front end) is more than 160 ℃, is particularly preferably 180 ℃, is preferably below 250 ℃, is particularly preferably below 230 ℃.In addition, extruded velocity is more than 0.5m/ minute, is particularly preferably more than 0.8m/ minute, is preferably below 7m/ minute, particularly preferably below 5m/ minute.
＜rubber composition 〉
Such as front explanation, outer 5 are preferably formed by the cross-linking agent that is selected from a kind of rubber in ethylene propylene rubber, silaatic and the poly-urethane rubber at least.
Particularly, such as front explanation, to contain uncrosslinked above-mentioned rubber and be shaped to tubular as the rubber composition of rubber constituent by extrusion forming etc., and make above-mentioned rubber constituent crosslinked, thereby formation shell, further above-mentioned shell is ground so that become the external diameter of regulation as required, and be cut into the length etc. of regulation, thereby can form outer 5.
As ethylene propylene rubber, can enumerate above-mentioned EPM, EPDM etc. in the above-mentioned rubber.Can use separately in the above-mentioned rubber a kind as rubber constituent, also two or more kinds may be used.
EPDM particularly preferably.The main chain of EPDM is made of satisfied hydrocarbon, does not contain two keys, so in high-concentrated ozone atmosphere, comprise under the environment such as ultraviolet irradiation, even long-time the exposure also is difficult to cause the fracture of main chain.Therefore, can improve the ozone resistance, ultra-violet resistance, resistance to effect of heat etc. of internal layer 5.EPDM is preferred to be used separately, also may be used EPDM and other rubber constituent, and at this moment, the ratio that preferred EPDM accounts for the integral body of rubber constituent is more than the 50 quality %, particularly preferably more than the 80 quality %.
In rubber composition, cooperate for the crosslinking agent that makes above-mentioned rubber cross, crosslinking accelerator, crosslinking coagent etc.The kind of above-mentioned crosslinking agent, crosslinking accelerator, crosslinking coagent and mixing ratio can suitably be set according to the kind of rubber etc.
When for example rubber is EPDM, as crosslinking agent, can enumerate sulphur, organic compounds containing sulfur etc.
And, as with the crosslinking accelerator of the combination such as sulphur, be that accelerator, thiazole are one kind or two or more in the accelerator etc. such as enumerating thiuram.Crosslinking accelerator is because of the difference of kind, and the mechanism of promotion is also different, so preferred also with more than 2 kinds.
In addition, as crosslinking coagent, can enumerate one kind or two or more in the metallic compounds such as above-mentioned zinc oxide or stearic acid etc.Crosslinking coagent is because of the difference of kind, and function is also different, so preferred also with more than 2 kinds.
In addition, in the rubber composition, can cooperate as required for the extending agent that improves outer 5 mechanical strength and be used for the soften flux that improves the processability of rubber composition and improve above-mentioned outer 5 flexibility etc.
Wherein, as extending agent, can enumerate one kind or two or more in previous illustrative carbon black, clay, talcum, calcium carbonate, two alkali formula phosphites (DLP), basic magnesium carbonate, titanium oxide, aluminium oxide, the monox etc.
Being more than 1 mass parts in preferred every rubber constituent 100 mass parts of the mixing ratio of extending agent, being particularly preferably more than 3 mass parts, is below 50 mass parts in preferred every rubber constituent 100 mass parts, is particularly preferably below 30 mass parts.
During the not enough above-mentioned scope of the mixing ratio of extending agent, possibly can't obtain fully the effect by the mechanical strength that cooperates the raising skin 5 that above-mentioned extending agent obtains.In addition, surpass in the situation of above-mentioned scope in mixing ratio, outer 5 flexibility may reduce.
And when extending agent was as extending agent more than 2 kinds, above-mentioned mixing ratio was its total mixing ratio.
In addition, as soften flux, can enumerate one kind or two or more in previous illustrative oil, the plasticizer, be particularly preferably paraffin series oil.In addition, as above-mentioned paraffin series oil, can use base oil refining from mineral oil (crude oil) to be the various paraffin series oil of paraffin series.
Being more than 5 mass parts in preferred every rubber constituent 100 mass parts of the mixing ratio of soften flux, being particularly preferably more than 10 mass parts, is below 50 mass parts in preferred every rubber constituent 100 mass parts, is particularly preferably below 30 mass parts.
During the not enough above-mentioned scope of the mixing ratio of soften flux, possibly can't obtain fully the previously described effect by cooperating above-mentioned soften flux to obtain.In addition, even mixing ratio surpasses above-mentioned scope, can not obtain further effect, and excessive soften flux may infiltrate outer 5 inner peripheral surface and hinder by being pressed into of internal layer 2 carry out fixing, or infiltrate outer peripheral face 6 and the obstruction paper feeding, and might pollute toner, photosensitive material etc.
In rubber composition, can cooperate in the proper ratio at least a kind of additive that is selected from foaming agent, ageing resistant, antioxidant, ultraviolet absorbent, lubricant, pigment, antistatic agent, fire retardant, neutralizing agent, nucleating agent and the bubble preventing agent.
In order to modulate rubber composition, with the ratio of above-mentioned each composition as prescribed cooperate, mixing.Mixingly can use closed mixing machine, extruder, Banbury mixer, kneading machine etc.
Then, when the crosslinked rubber composition that modulates of pressurization, it is assembled in the mould of regulation, both be shaped to tubular and made it crosslinked by heating under the condition of pressurization, thereby formation shell, and as previously explained, by grinding above-mentioned shell so that become the external diameter of regulation and be cut into the length of regulation, thereby form outer 5.
The condition of extrusion forming can be with in the past identical.When for example making EPDM crosslinked with sulfur-crosslinked system, preferred heating-up temperature is more than 140 ℃, is particularly preferably more than 150 ℃, and preferred heating-up temperature is below 200 ℃, is particularly preferably below 180 ℃.In addition, preferred time of heat is more than 10 minutes, is particularly preferably more than 15 minutes, and preferred time of heat is below 30 minutes, is particularly preferably below 25 minutes.
The feeding-in roll of the present invention 1 that possesses above-mentioned internal layer 2 and outer 5 will be as being installed in for example electrostatic duplicator, laser printer, common paper facsimile unit, and their compounding machine, or various feeding-in rolls such as the paper feed roller in the paper advance mechanism of the equipment class such as ink jet printer, ATM (Automatic Teller Machine) (ATM), conveying roller, platen roller, exit roller and being used.
＜embodiment 1 〉
(making of internal layer 2)
Utilize after cylinder each composition dry type mixing with the prescription A shown in the following table 1; being heated to 200 ℃ on one side in the whorl of biaxial extruder carries out mixing; thereby make the rubber constituent dynamic crosslinking; extrude from spray nozzle front end on one side; then; the length that is cut into continuously regulation makes it granulating, obtains being dispersed with in above-mentioned resin matrix the particle of composition for thermoplastic elastomer of the cross-linking agent of EPDM.
Table 1
The detailed content of each composition is as described below in the table 1.
(resin matrix)
Be added with the hydrogen additive of the styrene series thermoplastic elastomer of hydrogen: SEEPS, the SEPTON (registered trade mark (RTM)) 4077 of (strain) Kuraray system
NOVATEC (registered trade mark (RTM)) PP of polypropylene: Japan Polypropylene (strain) system
(rubber constituent)
EPDM: Esprene (registered trade mark (RTM)) EPDM505A of Sumitomo Chemical (strain) system
(resin cross-linking agent)
Bromo alkyl resinox: TACKIROL (registered trade mark (RTM)) 250-III of ridge, field chemical frbre industry (strain) system
(soften flux)
Paraffin series oil: Diana (registered trade mark (RTM)) the process oil PW-380 of the emerging product of bright dipping (strain) system),
(crosslinking coagent)
Zinc oxide: No. 1, the zinc white of Mitsui Metal Co., Ltd.'s mining industry (strain) system
(extending agent)
The trade name KRONOS KR-380 of titanium oxide: Titan Kogyo (strain) system
Carbon black: HAF, the trade name SEAST 3 of TOKAI CARBON (strain) system
In single shaft is extruded the whorl of processing machine, above-mentioned particle is heated on the limit, the limit is carried out mixing, die head by the punch die that is connected with the front end of above-mentioned whorl, extrusion molding is tubular, formation have as Fig. 2, cross sectional shape shown in Figure 3, internal diameter φ 13.0mm, external diameter φ 20.0mm and after inside has the cylindrical body of 21 hollow bulbs 13, above-mentioned cylindrical body is cut into length 30mm, thereby forms internal layer 2.The condition of extrusion molding is made as 200 ℃ of extrusion temperatures (at the design temperature of whorl front end).
From with the cross section of axial vertical direction the sectional area of hollow bulb 13 and the sectional area of the solid part beyond the above-mentioned hollow bulb 13, the hollow rate of trying to achieve by the formula (1) of front is 25%.
(outer 5 make)
After each composition use closed mixing machine of formula I shown in the following table 2 is mixing, be assembled in the mould of regulation, crosslinked 20 minutes of 160 ℃ of lower pressurizations, form the shell of internal diameter φ 14mm, external diameter φ 21mm, length 60mm, use the cylinder abrasive disk to grind above-mentioned shell to external diameter φ 20mm, and cut into length 30mm, thereby form outer 5.
Table 2
The detailed content of each composition is as described below in the table 2.
(rubber constituent)
EPDM: Esprene (registered trade mark (RTM)) 670F of Sumitomo Chemical (strain) system
(extending agent)
Nipsil (registered trade mark (RTM)) VN3 of monox: TOSOH SILICA (strain) system
Calcium carbonate: the BF300 of standby northern efflorescence industry (strain) system
Carbon black: HAF, the trade name SEAST 3 of TOKAI CARBON (strain) system
(soften flux)
Paraffin series oil: Diana (registered trade mark (RTM)) the process oil PW-380 of the emerging product of bright dipping (strain) system
(crosslinking coagent)
Zinc oxide: 2 kinds in the zinc oxide of Mitsui Metal Co., Ltd.'s mining industry (strain) system
Stearic acid: the trade name TSUBAKI of day oil (strain) system
(crosslinking agent)
The sulphur powder: crane sees chemical frbre industry (strain) system
(crosslinking accelerator)
Tetraethylthiuram disulfide: Nocceler (registered trade mark (RTM)) TET of the emerging chemical frbre industry of imperial palace (strain) system
Two-2-benzothiazole disulfide: Nocceler (registered trade mark (RTM)) DM of the emerging chemical frbre industry of imperial palace (strain) system
(making of feeding-in roll 1)
In the through hole 3 of above-mentioned internal layer 2, be pressed into after the resin axle 4 of external diameter φ 14mm, above-mentioned internal layer 2 is pressed into skin 5, make feeding-in roll shown in Figure 11.Internal layer 2 and axle 4, internal layer 2 and outer 5 all do not have the clamping adhesive agent, only utilize that diameter is poor to be fixed by crimping.
＜embodiment 2 〉
(making of internal layer 2)
Utilize after rotary drum each composition dry type mixing with the prescription B shown in the following table 3; the limit is heated to 200 ℃ and carries out mixing in the whorl of biaxial extruder; thereby make the rubber constituent dynamic crosslinking; extrude from spray nozzle front end on the limit; then; the length that is cut into continuously regulation makes it granulating, obtains being dispersed with in above-mentioned resin matrix the particle of composition for thermoplastic elastomer of the cross-linking agent of EPDM.
Table 3
Each composition in the table 3 is identical with the composition of use in the table 1.
Except using above-mentioned particle, be identically formed same shape, unidimensional internal layer 2 with embodiment 1, with its with embodiment 1 in the outer identical skin 5 that forms and with embodiment 1 in the identical resin axle 4 of the axle that uses make up, make feeding-in roll shown in Figure 11.Internal layer 2 and axle 4, internal layer 2 and outer 5 be not clamping adhesive agent all, utilizes that diameter is poor only to be fixed by crimping.
The sectional area of the solid part beyond the sectional area of the hollow bulb 13 from internal layer 2 and cross section axial vertical direction and the above-mentioned hollow bulb 13, the hollow rate of trying to achieve by the formula (1) of front is 25%.
＜embodiment 3 〉
Use the particle of the prescription B identical with the prescription of modulation among the embodiment 2, change consists of the size of outer cylinder body 8, inner barrel 9 and the connecting part 12 of internal layer 2, forms internal diameter φ 13.0mm, external diameter φ 20.0mm and is 10% internal layer 2 by the hollow rate that above-mentioned formula (1) is tried to achieve.
Then, will with the outer identical skin 5 that forms among the embodiment 1 and with embodiment 1 in the identical resin axle 4 of the axle that uses make up and form above-mentioned internal layer 2, make feeding-in roll shown in Figure 11.Internal layer 2 and axle 4, internal layer 2 and outer 5 be not clamping adhesive agent all, utilizes that diameter is poor only to be fixed by crimping.
＜embodiment 4～6 〉
Except the hollow rate with internal layer 2 is made as 5% (embodiment 4), 50% (embodiment 5), 55% (embodiment 6), make in the same manner feeding-in roll 1 with embodiment 3.Internal layer 2 and axle 4, internal layer 2 and outer 5 be not clamping adhesive agent all, utilizes that diameter is poor only to be fixed by crimping.
＜comparative example 1 〉
Use the particle of the prescription A identical with the cooperation of modulation among the embodiment 1, be formed on inner do not have the internal diameter φ 13.0mm of the solid tubular of hollow bulb, the internal layer of external diameter φ 20.0mm.
Then, will with form outer identical outer among the embodiment 1 and with embodiment 1 in the identical resin axle of the axle of use make up above-mentioned internal layer, make feeding-in roll.Internal layer and axle, internal layer and skin be not clamping adhesive agent all, utilizes that diameter is poor only to be fixed by crimping.
＜comparative example 2 〉
Use the particle of the prescription B identical with the cooperation of modulation among the embodiment 2, be formed on inner do not have the internal diameter φ 13.0mm of the solid tubular of hollow bulb, the internal layer of external diameter φ 20.0mm.
And, will with form outer identical outer among the embodiment 1 and with embodiment 1 in the identical resin axle of the axle of use make up above-mentioned internal layer, make feeding-in roll.Internal layer and axle, internal layer and skin be not clamping adhesive agent all, utilizes that diameter is poor only to be fixed by crimping.
＜comparative example 3 〉
After the use closed mixing machine is mixing with each composition of the prescription C shown in the following table 4, be assembled in the mould of regulation, crosslinked 20 minutes of 160 ℃ of lower pressurizations, form the shell of internal diameter φ 13mm, external diameter φ 22mm, length 60mm, use the cylinder abrasive disk to grind above-mentioned shell to external diameter φ 21mm, and cut into length 30mm, thereby be formed on the inner internal layer that does not have the solid tubular of hollow bulb.
And, will with form outer identical outer among the embodiment 1 and with embodiment 1 in the identical resin axle of the axle of use make up above-mentioned internal layer, make feeding-in roll.Internal layer and axle, internal layer and skin be not clamping adhesive agent all, utilizes that diameter is poor only to be fixed by crimping.
Table 4
Butyl rubber in the table is as described below.In addition, the composition that uses in other composition and the formula I is identical.
Butyl rubber: the BUTYL 268 of Exxon Mobil company system
＜comparative example 4 〉
Except the mould as the crosslinked middle use of pressurization, use beyond the face corresponding to itself and outer field interface forms the mould of annular knurl, with comparative example 3 be identically formed internal diameter φ 13mm, external diameter φ 20mm, do not have the solid tubular of hollow bulb in inside and be provided with the internal layer of a plurality of annular knurl grooves at its interface.
Will with the cross section of axial vertical direction in the sectional area of annular knurl groove be used as the sectional area of hollow bulb, the hollow rate of trying to achieve by the formula (1) of front is 5%.
Will with form outer identical outer among the embodiment 1 and with embodiment 1 in the identical resin axle of the axle of use make up above-mentioned internal layer, make feeding-in roll.Although want not clamping adhesive agent, utilize that diameter is poor only to fix internal layer and axle, internal layer and skin by crimping, because internal layer and outer field area of contact are less, bed knife is insufficient, need to be fixed by adhesive agent so exist.
＜internal layer and outer field Determination of Hardness 〉
To assemble respectively feeding-in roll internal layer and the outer field A Shore hardness (A type hardness tester meter hardness) before of the various embodiments described above, comparative example measures according to the JIS K6253:2006 of Japanese Industrial Standards " method of obtaining of vulcanized rubber and thermoplastic rubber-hardness ".
The Determination of Hardness of＜outer peripheral face 〉
At 8 points of each circumferencial direction at above-mentioned outer peripheral face and the 5 places central axes direction, amount to 40 A type hardness tester meter hardness of measuring the outer peripheral face of the feeding-in roll of making in the various embodiments described above, the comparative example, obtain its maxim H
MaxWith minimum value H
Min, and, obtain above-mentioned maxim H
MaxWith minimum value H
MinDifference Δ H=H
Max-H
Min
It is less to be evaluated as above-mentioned poor Δ H, and the hardness inequality of outer peripheral face is less.
＜Test of Friction and logical paper status evaluation 〉
The feeding-in roll that in the various embodiments described above, comparative example, make, apply under the state of the vertical load of 250gf and crimping to loading paper in the width 60mm on Teflon (registered trade mark (RTM)) plate * length 210mm (the P paper of Fuji Xerox (strain) system), when above-mentioned feeding-in roll is rotated with circumferential velocity 300m/ second, the working load sensor is measured the carrying capacity F (gf) that above-mentioned paper is applied, and through type (2) is obtained friction coefficient.
Friction coefficient=F/250 (2)
Mensuration is after making feeding-in roll at once (initial stage), and, be installed in above-mentioned feeding-in roll in the black and white compounding machine (Fuji Xerox (strain) system VIVACE455) and behind continuously logical 50,000 P paper same as described above of paper (behind the logical paper) carries out.
Should illustrate that in order to keep the function of feeding-in roll, friction coefficient need to be more than 1.5 in the early stage, be more than 1.2 behind logical paper.
In addition, logical paper situation when observing above-mentioned logical paper, with occured halfway more than 3 times paper feeding bad, namely do not transmit or the folded average evaluation that send is logical paper bad (*), be common grade (△) with the average evaluation of less than more than 3 times and 1 time occurs, even will lead to 50,000 on paper, the bad average evaluation of paper feeding does not occur fully yet be logical paper good (zero).
＜ring sound evaluation 〉
The feeding-in roll that to make in the various embodiments described above, comparative example is installed in black and white compounding machine same as described above, during P paper that 1000 on logical paper continuously is identical the average evaluation of ring sound more than 3 times occuring is bad (*), being common grade (△) with the average evaluation of less than more than 3 times and 1 time occurs, will complete nonevent average evaluation be well (zero).
The above results are shown in table 5, table 6.
Table 5
Table 6
By the result of the comparative example 1～3 of table 6 as can be known, when will not have in inside the internal layer of solid shape of hollow bulb and outer combination, even form above-mentioned internal layer by the butyl rubber of absorption of vibrations excellence etc., also can't prevent fully the sound that rings.
And, by the result of comparative example 4 as can be known, although by at internal layer and outer field interface formation annular knurl groove, between itself and above-mentioned skin, be provided with in the situation in space, can prevent the sound that rings, become large but the hardness of outer peripheral face is uneven, so easy generation does not transmit and folds and the paper feeding such as send bad during logical paper.And such as previously explained in the structure of comparative example 4, internal layer and outer field area of contact are little, and bed knife is insufficient, so also need two-layerly to be fixed by adhesive agent above-mentioned.
Relative therewith, by the result of embodiment 1～6 as can be known, by internal layer 2 and outer 5 combinations that will have in inside hollow bulb 13, it is uneven to reduce hardness at the complete cycle of outer peripheral face 6, and can reduce whole hardness, when preventing the bad generation of paper feeding, can improve the absorption of vibrations of above-mentioned internal layer 2, the ring sound when reducing logical paper significantly.
In addition we know, internal layer 2 and outer 5 area of contact are large, have sufficient bed knife, so need not two-layerly to bond by adhesive agent above-mentioned.
In addition, by the result of embodiment 2～6 as can be known, consider when the uneven change of the hardness that suppresses outer peripheral face 6 is large, the hardness that reduces as far as possible internal layer 2 further improves when preventing the bad or ring sound texts when reducing logical paper of paper feeding, and the hollow rate of the hollow bulb 13 of trying to achieve by previously described formula (1) is preferably 10%～50%.
Claims (4)
1. feeding-in roll, it is characterized in that, comprise the internal layer of tubular and be provided on the periphery of described internal layer skin with the outer peripheral face that limits described feeding-in roll that wherein, described internal layer within it section has a plurality of hollow bulbs at the interface that does not arrive between described internal layer and the skin.
2. feeding-in roll according to claim 1, wherein, described internal layer is the layer that is formed by composition for thermoplastic elastomer, described composition for thermoplastic elastomer comprises resin matrix and rubber components, described resin matrix contains styrene series thermoplastic elastomer and polypropylene, described rubber components contain in diene series rubber and the ethylene propylene rubber one of at least and dynamic crosslinking and being dispersed in the described resin matrix.
3. feeding-in roll according to claim 1 and 2, wherein, the layer that described skin is served as reasons and is selected from the cross-linking agent of at least a kind of rubber in ethylene propylene rubber, silaatic and the poly-urethane rubber and forms.
4. each described feeding-in roll according to claim 1～3, wherein, total sectional area of the described hollow bulb from described internal layer and cross section axial vertical direction and total sectional area of the solid part beyond the described hollow bulb, through type (1) and the hollow rate of the described internal layer of trying to achieve is 10%～50%
Formula (1):
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011176662A JP5449272B2 (en) | 2011-08-12 | 2011-08-12 | Paper feed roller |
| JP2011-176662 | 2011-08-12 |
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| Publication Number | Publication Date |
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| CN102923505A true CN102923505A (en) | 2013-02-13 |
| CN102923505B CN102923505B (en) | 2016-04-20 |
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| CN201210067524.3A Expired - Fee Related CN102923505B (en) | 2011-08-12 | 2012-03-14 | Feeding-in roll |
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| CN (1) | CN102923505B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298359A (en) * | 2017-01-12 | 2018-07-20 | 上海东冠纸业有限公司 | A kind of green technology for making paper rewinding machine exhibition mechanism of paper |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE202013102101U1 (en) * | 2013-05-14 | 2014-08-18 | Bhs Corrugated Maschinen- Und Anlagenbau Gmbh | Guide wheel assembly |
| CN103862363A (en) * | 2014-03-24 | 2014-06-18 | 无锡宝顺不锈钢有限公司 | Polyurethane cold rolling grinding contact rubber converted roller |
| CN105215865B (en) * | 2015-09-01 | 2018-08-17 | 河南科技学院 | A kind of Roll-to-Roll chemical-mechanical polishing mathings concretion abrasive polishing roll and preparation method thereof |
| JP2017160009A (en) * | 2016-03-09 | 2017-09-14 | パナソニックＩｐマネジメント株式会社 | Roller and paper feeding device including the same |
| CN108737676B (en) | 2017-04-13 | 2019-11-05 | 精工爱普生株式会社 | Roller, separator, image read-out and recording device |
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| JP2007015792A (en) * | 2005-07-05 | 2007-01-25 | Sumitomo Rubber Ind Ltd | Paper feed roller |
| CN1955216A (en) * | 2005-10-18 | 2007-05-02 | 住友橡胶工业株式会社 | Elastomer composition and rubber roller composed of elastomer composition |
| CN1966375A (en) * | 2005-11-15 | 2007-05-23 | 住友橡胶工业株式会社 | Paper feed roller |
| CN102096357A (en) * | 2009-12-10 | 2011-06-15 | 住友橡胶工业株式会社 | Conductive roller and electrophotographic apparatus employing the same |
| JP2011116480A (en) * | 2009-12-01 | 2011-06-16 | Sumitomo Rubber Ind Ltd | Paper feeding roller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4367409B2 (en) * | 2005-12-27 | 2009-11-18 | 東海ゴム工業株式会社 | Feed roller |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007015792A (en) * | 2005-07-05 | 2007-01-25 | Sumitomo Rubber Ind Ltd | Paper feed roller |
| CN1955216A (en) * | 2005-10-18 | 2007-05-02 | 住友橡胶工业株式会社 | Elastomer composition and rubber roller composed of elastomer composition |
| CN1966375A (en) * | 2005-11-15 | 2007-05-23 | 住友橡胶工业株式会社 | Paper feed roller |
| JP2011116480A (en) * | 2009-12-01 | 2011-06-16 | Sumitomo Rubber Ind Ltd | Paper feeding roller |
| CN102096357A (en) * | 2009-12-10 | 2011-06-15 | 住友橡胶工业株式会社 | Conductive roller and electrophotographic apparatus employing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298359A (en) * | 2017-01-12 | 2018-07-20 | 上海东冠纸业有限公司 | A kind of green technology for making paper rewinding machine exhibition mechanism of paper |
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| JP2013039990A (en) | 2013-02-28 |
| JP5449272B2 (en) | 2014-03-19 |
| CN102923505B (en) | 2016-04-20 |
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