阅读说明：本技术 一种应用于彩色打印机的防滑驱动轴结构 (Be applied to anti-skidding drive shaft structure of color printer ) 是由 周巍峙 于 2020-07-21 设计创作，主要内容包括：本发明公开一种应用于彩色打印机的防滑驱动轴结构,其包括铝管、胶管以及将铝管和胶管粘接在一起的复合胶粘层；复合胶粘层包括与铝管的表面化学键合并紧紧粘附在铝管上的底涂层、以高分子弹性体和溶剂组成的过渡粘着层、以及用于与胶管受热粘着的胶浆层,使胶管与复合胶粘层附着的铝管紧配或紧配加化学键交联粘着。本申请中,铝管外涂覆有与其紧密粘接的复合胶粘层,复合胶粘层与铝管层间是化学键相结合方式粘接；最外层是高分子弹性体构成的胶管,且复合胶粘层是具有导电性的高分子弹性体,便于与胶管复合；最后,胶管与复合胶粘层附着的铝管紧配或紧配加化学键交联粘着,从而使铝管和胶管通过复合胶粘层形成为一个整体,大大增加了其摩擦力。(The invention discloses an anti-skidding driving shaft structure applied to a color printer, which comprises an aluminum pipe, a rubber pipe and a composite adhesive layer, wherein the composite adhesive layer is used for bonding the aluminum pipe and the rubber pipe together; the composite adhesive layer comprises a bottom coating which is chemically bonded with the surface of the aluminum pipe and is tightly adhered to the aluminum pipe, a transition adhesive layer which consists of a high-molecular elastomer and a solvent, and a mucilage layer which is used for being heated and adhered with the rubber pipe, so that the rubber pipe is tightly matched or matched with the aluminum pipe adhered to the composite adhesive layer by chemical bond crosslinking and adhesion. In the application, a composite adhesive layer which is tightly adhered to the aluminum pipe is coated outside the aluminum pipe, and the composite adhesive layer is adhered to the aluminum pipe layer in a chemical bond combination mode; the outermost layer is a rubber tube made of a high polymer elastomer, and the composite adhesive layer is a high polymer elastomer with conductivity, so that the composite adhesive layer is convenient to compound with the rubber tube; finally, the rubber tube is closely matched or closely matched with the aluminum tube attached to the composite adhesive layer and is crosslinked and adhered by chemical bonds, so that the aluminum tube and the rubber tube are formed into a whole through the composite adhesive layer, and the friction force of the aluminum tube and the rubber tube is greatly increased.)

1. The utility model provides an in being applied to transfer transmission device among color printer, the color copier that is applied to anti-skidding drive shaft structure of color printer, its characterized in that: the anti-skid driving shaft structure comprises an aluminum pipe positioned in the center, a rubber pipe sleeved outside the aluminum pipe and a conductive composite adhesive layer for adhering the aluminum pipe and the rubber pipe together; the composite adhesive layer and the aluminum pipe are baked into a whole at high temperature;

the composite adhesive layer comprises a base coating which is chemically bonded with the surface of the aluminum pipe and is tightly adhered to the aluminum pipe, a transition adhesive layer which consists of a high-molecular elastomer and a solvent, and a glue layer which is used for being heated and adhered with the rubber pipe, so that the rubber pipe is tightly matched or tightly matched with the aluminum pipe attached to the composite adhesive layer and is crosslinked and adhered by chemical bonds.

2. The structure of an antiskid drive shaft for a color printer according to claim 1, wherein: the preparation method of the composite adhesive layer comprises the following steps:

preparing a base coat and a transitional adhesion layer: the ground coat is a viscous mixed liquid which is realized by taking phenolic aldehyde resin and chlorinated rubber as main bodies and matching with an auxiliary agent and a solvent; the transition adhesion layer is a viscous mixed liquid consisting of a high-molecular elastomer and a solvent;

Preparing a mucilage layer material: the formula of the adhesive cement layer comprises a main material, a conductive agent, a vulcanizing agent, a reinforcing agent, a softening agent, an active agent, a vulcanizing agent and an accelerator;

the main material is EPDM, NBR/ECO, polyurethane or SBR, the main material of the rubber cement layer is the same as that of the rubber tube material, and the conductive agent is conductive carbon black or an ionic conductive agent; the content range of the used main material is 25-55%, the content range of the conductive agent is 10-30%, the content range of the vulcanizing agent is 0.3-1.5%, the content range of the reinforcing agent is 15-45%, the content range of the active agent is 1-5%, and the content range of the accelerator is 1-2.5%;

preparing a mucilage layer by adopting the mucilage layer material: weighing the formula of the rubber cement layer according to a certain proportion, mixing and dispersing uniformly in an internal mixer or an open mill, then making into slices and cutting into fine slices; soaking the cut fine slices and a solvent in a steel barrel according to a certain weight ratio, wherein the weight ratio ranges from 1:10 to 1: 4; then fully stirring or grinding the soaked rubber sheets by a stirrer or a three-roll grinder to form a rubber slurry layer; the viscosity of the prepared mucilage layer is 50-800 centipoises.

3. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the curing steps of the composite adhesive layer and the aluminum tube are that three layers of materials of the composite adhesive layer are coated on the aluminum tube for three times, after the solvent is fully volatilized, the materials are heated, vulcanized and cured, and the thickness of the composite adhesive layer is within 0.12mm, and the curing steps of the composite adhesive layer and the aluminum tube are as follows:

Step 1: degreasing the surface of the aluminum pipe and cleaning;

step 2: coating a bottom coating on the surface of the aluminum pipe, naturally drying for a preset time, wherein the thickness range of the bottom coating is 0.02-0.05mm, coating a second transitional adhesion layer, naturally drying for a preset time, the thickness range of the transitional adhesion layer is 0.02-0.05mm, coating a third layer of mucilage layer, the thickness range of the mucilage layer is 0.05-0.08mm, and the total thickness of the three layers of materials is controlled within 0.12 mm; placing the aluminum pipe coated with the adhesive layer in a drying oven at the temperature of 40-100 ℃ for 20-120 minutes to bake so as to fully volatilize the solvent of the adhesive layer, thereby obtaining a semi-finished product coated with the adhesive layer;

and step 3: heating the semi-finished product at the temperature of 120-180 ℃ for a preset time to cure.

4. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the vulcanizing agent is sulfur, the reinforcing agent is carbon black or white carbon black, the softener is paraffin oil, the activator is a combination of zinc oxide and stearic acid, and the accelerator is CZ, TMTD, TBTD, TMTM, DPTT, TAR, M, MD or DPG, or comprehensively accelerates EG-3 and EG-4.

5. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: 35-45% of main material, 12-18% of conductive agent, 10-20% of reinforcing agent, 1.5-3% of activator, 0.5-1.2% of vulcanizing agent and 1.2-2.0% of accelerator.

6. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the step of fully stirring the soaked rubber sheets into the rubber cement by adopting a stirrer is to be specific, the soaked rubber sheets are placed in a blade stirrer to be stirred for 12-24 hours at the stirring speed of 100-200 revolutions per minute, and then the rubber sheets are completely dissolved in the solvent to form the rubber cement.

7. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the viscosity of the adhesive cement layer is 300-500 centipoises.

8. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the rubber tube is sleeved on the aluminum tube treated by the composite adhesive layer, the rubber tube, the composite adhesive layer and the aluminum tube are in close fit, and the expansion ratio of the rubber tube is within 3% -15%;

the assembly process of the rubber tube and the aluminum tube is as follows: sleeving the rubber tube and the aluminum tube after the composite adhesive layer is cured on the aluminum tube in an inflation mode by using a special blowing jig; and then grinding the surface of the rubber tube sleeved with the aluminum tube to the extent that the grinding surface roughness is within Ra6.5.

9. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the base coat is kellogram CH205, and the transition adhesive layer is kellogram CH238 or CH 6100.

10. The structure of an antiskid drive shaft for a color printer according to claim 2, wherein: the primer layer was Rohm and Thixon P-11 and the transitional adhesion layer was Megum 538.

Technical Field

The invention belongs to the technical field of transfer printing structures of color printers and color copiers, and particularly relates to a transfer printing belt and a mechanism for driving the transfer printing belt to rotate, which are needed in the process of transferring color carbon powder of a color printer copier.

Background

The existing color printing and copying technology is rapidly developed, the printing speed is also improved continuously, the driving force is increased, and the problems that a rubber tube sleeved on an aluminum tube slips, the rubber tube deviates, retracts and the like often occur when the existing driving shaft is used. The extensive research shows that the conventional universal driving shaft is formed by directly sleeving a polymer pipe on an aluminum pipe, the friction coefficient between the aluminum pipe and a rubber pipe is low, the friction force is small, although the rubber pipe and the aluminum pipe are in tight fit, the rubber pipe has a certain shrinkage ratio, the surface friction coefficient of the aluminum pipe is very low and is about 0.4, and if the driving force is increased, the friction force is larger than the friction force between the aluminum pipe and the rubber pipe, so that the universal driving shaft can slip. If the aluminum pipe and the rubber pipe slip, the rubber pipe has the chance to deviate or contract inwards. As is known, when a driving shaft works, a motor drives an aluminum pipe assembly, the aluminum pipe assembly drives an outer layer rubber pipe through friction, and the rubber pipe drives a transfer printing belt through the friction relation with the transfer printing belt, so that carbon powder is printed on paper. If the printing speed is increased, the driving force of the rubber tube driven by the aluminum tube is certainly required to be increased, the friction force is in direct proportion to the friction coefficient, and the friction coefficient of the aluminum tube per se is constant, so that the surface of the aluminum tube is treated, a composite adhesive layer with good bonding effect with the aluminum tube is added, the composite adhesive layer can be well bonded with the aluminum tube and forms chemical bond crosslinking, the friction coefficient between the composite adhesive layer and the outer layer of the polymer elastomer rubber tube layer is higher than that between the aluminum tube and the outer layer of the rubber tube layer, the friction force can be increased, and the product has enough driving force. Even the composite bonding layer can be bonded with the aluminum pipe through chemical bonds and can form intermolecular crosslinking with the outer rubber pipe to form a whole, the driving force provided by the composite bonding layer is more ensured, the composite bonding layer can not slip absolutely, and the rubber pipe can shift, deviate or retract inwards.

Disclosure of Invention

The following presents a simplified summary of embodiments of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that the following summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

According to one aspect of the application, an anti-skid driving shaft structure applied to a color printer is provided, and applied to a transfer transmission mechanism in the color printer and the color copier, the anti-skid driving shaft structure comprises an aluminum pipe positioned in the center, a rubber pipe sleeved outside the aluminum pipe, and a composite adhesive layer with conductivity and used for adhering the aluminum pipe and the rubber pipe together; the composite adhesive layer and the aluminum pipe are baked into a whole at high temperature; the composite adhesive layer comprises a base coating which is chemically bonded with the surface of the aluminum pipe and is tightly adhered to the aluminum pipe, a transition adhesive layer which consists of a high-molecular elastomer and a solvent, and a glue layer which is used for being heated and adhered with the rubber pipe, so that the rubber pipe is tightly matched or tightly matched with the aluminum pipe attached to the composite adhesive layer and is crosslinked and adhered by chemical bonds. The antiskid driving shaft structure is used in the transfer transmission mechanism of color printer and color copying machine to drive the transfer belt, and the aluminum pipe is hollow and has two ends inserted with core shaft. In the application, a composite adhesive layer which is tightly adhered to the aluminum pipe is coated outside the aluminum pipe, the composite adhesive layer is adhered to the aluminum pipe layer in a chemical bond combination mode, and the composite adhesive layer is cured and tightly adhered to the metal surface through high-temperature baking; the outermost layer is a rubber tube made of a high polymer elastomer, and the composite adhesive layer is a high polymer elastomer with conductivity, so that the composite adhesive layer is convenient to compound with the rubber tube; the friction coefficient between the composite adhesive layer and the rubber tube is greater than that between the aluminum tube and the rubber tube; finally, the rubber tube is closely matched or closely matched with the aluminum tube attached to the composite adhesive layer and is crosslinked and adhered by chemical bonds, so that the aluminum tube and the rubber tube are formed into a whole through the composite adhesive layer, and the friction force of the aluminum tube and the rubber tube is greatly increased. In addition, in order to realize the antiskid driving shaft structure, the formula and the manufacturing technology of the adhesive cement of the composite adhesive layer, the formula of the outer-layer high polymer material, the manufacturing of the rubber tube and the post-processing technology are further involved.

The high-temperature baking conditions of the composite adhesive layer and the aluminum pipe are as follows: temperature range: 120-180 ℃, the preferred temperature range is 130-160 ℃, the baking time is 30-120 minutes, the preferred temperature range is 45-60 minutes, and the baking tool can be a common baking oven or a pressure high-temperature vulcanizing tank. After high-temperature baking, the composite adhesive layer forms a solid conductive polymer elastomer.

The traditional design of the existing driving shaft is realized by a two-layer structure of an aluminum pipe layer and a rubber pipe layer, and the three-layer structure of the aluminum pipe, the composite adhesive layer and the rubber pipe is changed into the three-layer structure realized by the aluminum pipe, the composite adhesive layer and the rubber pipe, wherein the composite adhesive layer is also three-layer composite, one is a bottom coating, the other is a transition adhesive layer, and the third is a rubber paste layer which can be adhered to the outer rubber pipe by heating under proper conditions. The bottom coating is directly contacted with the aluminum pipe, the transition adhesion layer is arranged between the bottom coating and the adhesive layer, the adhesive layer can be adhered to the rubber pipe by heating, and the three layers after heating, vulcanizing and curing are mutually interwoven to form a whole.

The three-layer composite manufacturing method of the composite adhesive layer comprises the following steps:

preparing a base coat and a transitional adhesion layer: the ground coat is a viscous mixed liquid which is realized by taking phenolic aldehyde resin and chlorinated rubber as main bodies and matching with an auxiliary agent and a solvent; the transition adhesion layer is a viscous mixed liquid consisting of a high-molecular elastomer and a solvent; wherein, the bottom coating and the transition adhesive layer can be realized by an externally purchased adhesive;

Preparing a mucilage layer material: the formula of the adhesive cement layer comprises a main material, a conductive agent, a vulcanizing agent, a reinforcing agent, a softening agent, an active agent and an accelerator or a curing agent;

the main material of the rubber cement layer is the same as that of the rubber pipe material, and can be EPDM, NBR/ECO, polyurethane and SBR, preferably EPDM, NBR/ECO and polyurethane, and the type of the selected main material should be low Mooney grade, and the rubber cement prepared by the low Mooney grade has good coating property and good adhesiveness. The content range of the used main materials is 25-55%, preferably 35-45%;

the conductive agent is conductive carbon black or an ionic conductive agent. The content range of the conductive agent is 10-30%, and the preferable content range is 12-18%;

the reinforcing agent is carbon black or white carbon black, and the content range of the reinforcing agent is 15-45 percent, preferably 10-20 percent;

the softening agent is paraffin oil, and the softening agent is paraffin oil,

the active agent is a zinc oxide/stearic acid combination, and the content of the active agent ranges from 1% to 5%, preferably from 1.5% to 3%;

the vulcanizing agent is sulfur, the content range of the vulcanizing agent is 0.3-1.5%, and the preferable range is 0.5-1.2%;

the accelerant is CZ, TMTD, TBTD, TMTM, DPTT, TAR, M, MD, or DPG, etc., or comprehensively promotes EG-3 and EG-4 (manufacturers mix the above components in a certain proportion and mix them uniformly so as to save the weighing times, and only aim at EPDM material). The content of the accelerant is in the range of 1% -2.5%, and the preferable range is 1.2% -2.0%.

Preparing the mucilage (namely the mucilage layer) by using the mucilage layer material: the formula is weighed according to a certain proportion, is mixed and uniformly dispersed in an internal mixer or an open mill, and then is taken out to be thin slices and cut into thin slices. Soaking the cut fine slices and a solvent in a steel barrel according to a certain weight ratio of 1:10-1:4, preferably 1:7-1: 5. Then the soaked rubber sheets are placed in a blade stirrer to be stirred for 12-24 hours, the stirring speed of the blade is 100-200 rpm, and the rubber sheets are completely dissolved in the solvent to form the rubber cement. Or rolling into mucilage by a three-roller machine. Wherein the solvent can be ethyl acetate solvent. The viscosity of the prepared mucilage is 50-800 centipoises, and is preferably 300-500 centipoises for coating operability.

The curing step of the composite adhesive layer and the aluminum tube is that three layers of materials of the composite adhesive layer are coated on the aluminum tube for three times, and after the solvent is fully volatilized, the three layers of materials are heated, vulcanized and cured (the curing step is called as a thermosetting composite adhesive layer aluminum tube); the thickness of the composite adhesive layer is within 0.12mm, and the method comprises the following specific steps:

step 1: degreasing the surface of the aluminum pipe and cleaning; bottom

Step 2: coating the adhesive of the bottom coating on the surface of the aluminum pipe, naturally drying for a preset time (for example, more than 20 minutes), wherein the thickness of the bottom coating ranges from 0.02 mm to 0.05mm, coating the adhesive of the second transitional adhesion layer, naturally drying for a preset time (for example, more than 20 minutes), the thickness of the transitional adhesion layer ranges from 0.02 mm to 0.05mm, coating the third adhesive layer, wherein the thickness of the adhesive layer ranges from 0.05mm to 0.08mm, and the total thickness of the three layers is controlled within 0.12 mm; and (3) baking the aluminum pipe coated with the adhesive layer in an oven at the temperature of 40-100 ℃ for 20-120 minutes (preferably, baking at the temperature of 50-70 ℃ for 30-60 minutes) to fully volatilize the adhesive layer solvent. This gives a semifinished adhesive-coated layer.

And step 3: and heating the obtained semi-finished product at the temperature of 120-180 ℃ for a preset time (for example, 140 ℃ 30 minutes) to cure.

The rubber tube is sleeved on the aluminum tube treated by the composite adhesive layer, the rubber tube is in tight fit with the aluminum tube, and the expansion ratio (expansion rate) of the rubber tube is within 3% -15%, preferably 5% -10%. The assembly process of the rubber tube and the aluminum tube is as follows: sleeving the rubber tube and the aluminum tube (the aluminum tube with the thermosetting composite adhesive layer) with the cured composite adhesive layer on the aluminum tube in a blowing manner by using a special blowing jig, wherein the shape of the aluminum tube is in tight fit, and the elongation ratio of the rubber tube is 6.8%; then, the surface of the hose with the aluminum pipe fitted therein is ground (polished) to a surface roughness of Ra 6.5 or less, preferably Ra 4.5 or less.

The bottom coating is a viscous mixed liquid which is similar to a coating sample and is realized by taking the phenolic aldehyde resin and the chlorinated rubber as main bodies and matching with the auxiliary agent and the solvent, so that the aluminum tube is convenient to coat, spray or dip-coat, the solvent can be favorable for volatilization, and then the mixture attached to the aluminum tube can be vulcanized and adhered by heating. The phenolic aldehyde resin in the mixture can be cured in the vulcanization bonding process to form a network structure embedded in a groove on the metal surface to form tree root-shaped connection, and the other main component is chlorinated rubber which forms crosslinking with metal or metal oxide in the vulcanization bonding process, wherein the crosslinking is chemical bond crosslinking combination among macromolecules, so that large adhesive force can be obtained.

The transition adhesive layer is a viscous mixed liquid consisting of a high-molecular elastomer and a solvent, is convenient to coat, spray or dip on the bottom coating and is attached to the surface of the bottom coating, and the solvent is also favorable for volatilization. The high molecular components in the transition adhesive layer and the high molecular components in the bottom coating layer can form an interpenetrating network and can be interwoven and cured among molecules, and simultaneously, the high molecular components and the mucilage layer can form an interpenetrating network and intermolecular crosslinking, so that the aluminum pipe can be compositely adhered and tightly attached to the surface of the aluminum pipe.

In a preferred embodiment, the primer layer is kelvin CH205, and the transition adhesive layer is kelvin CH238 or CH 6100.

As another preferred embodiment, the primer layer is Rohm and Haas Thixon P-11 and the transitional adhesion layer is Megum 538.

The mucilage layer is realized by a self-made mucilage formula obtained through experiments; the mucilage layer is a mixture of mixed sizing materials and a solvent, is fully stirred or ground and mixed by a stirrer or a three-roll grinder, is a liquid which is uniformly mixed and has a certain viscosity, and the viscosity of the liquid is 50-800 centipoises (Brookfield LV 2 rotor, 30 revolutions per minute), and the preferred viscosity range is 200-500 centipoises. Specifically, the formula of the adhesive cement layer comprises a main material, a conductive agent, a vulcanizing agent and an accelerator or a curing agent; the main material is the same as that of the rubber tube material, and the conductive agent is conductive carbon black or an ionic conductive agent.

The rubber tube is made of materials similar to the main materials of the rubber cement, but the rubber material is different in size, for example, the main material of the rubber tube is EPDM, and the rubber tube can be made of Mitsui chemical EPDM 3072EM or Alang 8550C, and the rubber tube is characterized by high Mooney viscosity of raw rubber, large molecular weight of high Mooney viscosity and good wear resistance. The EPDM content is 40% -60%, preferably 45-55%, and other components in the formula comprise conductive carbon black or conductive agent, reinforcing agent carbon black or white carbon black, softener paraffin oil, activator is zinc oxide/stearic acid combination, vulcanizing agent sulfur, accelerant is CZ, BZ, EZ, TT, TBTD, TMTM, DPTT, TAR, M, MD, DPG and the like, or comprehensively promote EG-3 and EG-4 (the manufacturer mixes the above components in a certain proportion and uniformly mixes the components so as to save the weighing times). 8% -35%, preferably 10% -15%, 5% -30%, preferably 10% -20% of reinforcing agent, 2% -8%, preferably 3% -5% of paraffin oil, 1% -5%, preferably 8% -10% of active agent, 0.3-1.5%, preferably 0.5-1.2% of sulfur and 1% -2.5% of accelerator, preferably 1.2% -2.0%.

As can be seen from the foregoing, the mortar layer is similar to the rubber layer, but has different models, and the mortar layer also uses EPDM as the main material, and can be EPDM 4045M of Mitsui chemistry, and other brands such as JSR EP33, Jinhu EPDM 330, which has low Mooney superior to high Mooney, low Mooney molecular weight, which is good for initial adhesion, high ENB content superior to ENB content, and high ENB content good for rapid curing. The EPDM content is 30-50%, preferably 35-45%, the other components in the formula comprise conductive carbon black or conductive agent, reinforcing agent is white carbon black, white carbon black is used as an adhesive agent, the softening agent is paraffin oil, the active agent is zinc oxide/stearic acid combination, the filling agent is calcium carbonate or argil, talcum powder, vulcanizing agent sulfur, and the accelerators are CZ, BZ, EZ, TT, TBTD, TMTM, DPTT, TAR, M, MD, DPG and the like, or are combined with accelerators EG-3 and EG-4. 8% -35%, preferably 10% -15%, 5% -30%, preferably 8% -12% of reinforcing agent, 2% -8%, preferably 3% -6% of paraffin oil, 1% -5% of active agent, 5% -15%, preferably 8% -10%, 0.3% -1.5%, preferably 0.5% -1.2% of sulfur and 1% -2.5%, preferably 1.2% -2.0% of accelerator. The components in the formula are uniformly mixed by an open mill or an internal mixer and well dispersed. Discharging with an open mill to obtain sheet with thickness of 0.2-4mm, preferably 0.5-2mm, and cutting into small pieces. The film is matched with the solvent according to a certain proportion, and the proportion is as follows: the solvent is 1: 3-1: 15, preferably 1; 5-1: 10. Then the complex is packaged by a stainless steel container and placed on a blade stirrer to be stirred for 24 hours, and can also be ground by a three-roll grinder. The rubber sheet and the solvent are fully melted after being stirred to form mucilage. The viscosity of the mucilage is 50-800 centipoises (Brookfield LV 2 rotor, 30 rpm), preferably 200 centipoises and 500 centipoises. The mucilage with proper viscosity is convenient to coat, spray or dip on the transition adhesive layer and form a glue film, the solvent of the coated mucilage layer can keep the same characteristic as that of raw rubber after being completely volatilized, and only the characteristic of the raw rubber is kept, the heating vulcanization curing is carried out, and an interpenetrating vulcanization crosslinked polymer network is formed between the coating and the transition adhesive layer.

As a feasible scheme, the rubber tube adopts NBR/ECO as a main material, the NBR adopts JSR 230 and JSR 220, the ECO adopts Cao CG-102 or EPION-301, or Ruisheng ECO T-3106 or T-3018, the NBR content is 10-50%, the ECO content is 10-50%, the activator zinc oxide content is 1.5-2.2%, the reinforcing agent carbon black content is 10-40%, the filler calcium carbonate content is 8-10%, the vulcanizing agent sulfur content is 0.3-0.8%, the accelerator CZ content is 0.8-1.2%, and the TMTD content is 0.8-1.2%.

As another feasible scheme, the rubber tube is NBR/ECO, the rubber cement layer takes NBR as a main material, can be 3445F which is prosperous, also can select other brands, such as JSR250SL, the Mooney viscosity is low, the type of the sulfur fast point preferentially selects the NBR main material content of 40% -55%, other components in the formula, such as an active agent, a filling reinforcing agent, a vulcanizing agent and an accelerator can be matched with the NBR outer layer rubber tube in a consistent ratio, which is beneficial to the compatibility and adhesion with the outer layer rubber tube, but the rubber cement layer is different from the rubber tube components in that no ECO rubber cement is arranged in the formula, and can be. If no ECO rubber compound is added, conductive carbon black is added, and the content of the conductive carbon black is 20-30%. After weighing and matching, the components in the formula are uniformly mixed and well dispersed by an open mill or an internal mixer. The rubber slurry is prepared by the same method as the EPDM rubber slurry, and the rubber slurry layer and the transition adhesive layer can also be vulcanized and cured by heating to form an interpenetrating vulcanized and crosslinked polymer network.

As another feasible scheme, if the rubber pipe is cast PU, Langsheng E330 pre-cast PU is selected, the main material contains 82-90 percent, the curing agent MOCA content is 8-12 percent, and the antistatic agent content is 1-3 percent.

As another feasible scheme, the hose is PU, the main material of the composite adhesion layer is mixing type PU with the resistance value within 6 ohms of 10, the PU content is 96-98%, the peroxide curing agent content is 2-4%, the materials are uniformly mixed and cut into thin pieces, the PU adhesive cement is prepared as the adhesive cement preparation method, and the adhesive cement layer and the transition adhesion layer are heated and cured to form an interpenetrating vulcanized crosslinked polymer network.

Preferably, both the composite adhesive layer and the hose have conductivity, and preferably, the electrical resistance of both the composite adhesive layer and the hose is not more than 6 o' clock of 10. The resistance of the overall anti-skid drive shaft structure is below 7 ohms of 10. And the composite adhesive layer is adhered with the aluminum tube layer, and the adhesive strength reaches more than 4 grades, preferably more than 2 excellent by a cross-cut method.

Wherein, the composite adhesive layer can be adhered with the rubber tube of the outer layer or not according to the requirement. Whether the composite adhesive layer and the rubber hose layer are adhered or not can be realized according to different processes. When the composite adhesive layer does not need to be adhered with the outer rubber hose layer, the surface friction coefficient of the cured adhesive layer is required to be greater than the friction coefficient of the aluminum pipe by 0.4, and preferably greater than 0.6.

The total thickness of the composite adhesive layer is within 0.03-0.2mm, and preferably 0.05-0.12 mm.

The hose is a conductive polymer elastomer having an electric resistance of 10 to 7 th power ohm or less, preferably 10 to 5 th power ohm or less. The thickness range of the rubber tube is 0.8-2.5 mm, and the thickness of the rubber tube is preferably 1.0-1.5 mm. The rubber tube can be formed by mould pressing vulcanization, extrusion hot air vulcanization, extrusion vulcanizing tank vulcanization, injection molding or pouring molding. The rubber tube, the composite adhesive layer and the aluminum tube are in close fit, and the expansion rate of the rubber tube is 3% -15%, preferably 5% -10%.

The rubber tube is made of EPDM, NBR/CEO, SBR, NR or PU, and preferably EPDM, NBR/ECO or PU. The hardness of the hose is between 50 and 90 degrees, preferably between 60 and 80 degrees. The surface friction coefficient of the hose is 0.7-1.6, preferably 0.8-1.3.

This application designs and provides an antiskid drive shaft structure through above-mentioned scheme to guarantee can not skid and the rubber tube aversion is deviated or is drawn back when using. In order to realize the structure, the aluminum pipe is subjected to composite gluing treatment, and the rubber pipe and the aluminum pipe are organically integrated into a whole through the composite gluing layer, so that sufficient friction force or bonding force is obtained. Specifically, the structure of this application has following advantage:

1. The composite bonding layer can be bonded with the aluminum pipe through chemical bonds and can also form intermolecular crosslinking with the outer rubber pipe to form a whole, the integral friction force of the antiskid driving shaft structure reaches over 0.8, the provided driving force is more ensured, the antiskid driving shaft structure cannot slip absolutely, and the rubber pipe is displaced and deviated or retracted;

2. the composite adhesive layer is chemically adhered on the basis of the aluminum pipe and is adhered with the outer polymer elastomer layer in a chemical crosslinking mode to form a whole; the structure is simple and easy to realize, and the friction force or the bonding force is greatly superior to that of the driving shaft in the prior art;

3. wherein, the rubber tube can be tightly matched with the uncured composite adhesive layer aluminum tube, and then heated and cured at the temperature of 140 ℃ for 30 minutes to be processed into a tightly matched heating and curing product. The antiskid effect is better, but the manufacturing cost is slightly higher. The rubber tube can also be processed into a close-fitting product by close fitting with the thermosetting composite adhesive layer aluminum tube. The antiskid effect of the product is slightly worse than that of the product, but the manufacturing cost is advantageous. The user can select corresponding process steps according to the requirement; has good practicability.

Drawings

The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used throughout the figures to indicate like or similar parts. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to further explain the principles and advantages of the invention. In the drawings:

FIG. 1 is a schematic diagram of an assembly and use structure of an anti-slip driving shaft structure, wherein 1-01 is a driving shaft, 1-02 is a transfer belt, 1-03 is printing paper, and 1-04 is OPC (or called photosensitive drum);

FIG. 2A is a schematic view showing the structure of the anti-slip drive shaft of the present invention, and FIG. 2B is a cross-sectional view taken at AA in FIG. 2A, in which 2-01 is a mandrel, 2-02 is an aluminum pipe, 2-03 is a composite adhesive layer, and 2-04 is a hose (or outer layer of polymer elastomer);

FIG. 3 is a schematic view of the composite adhesive layer of the present invention, wherein 3-01 is a primer layer, 3-02 is a transitional adhesion layer, and 3-03 is a cement layer;

FIG. 4 is a schematic view of extrusion of a T-shaped die, wherein 4-01 is an extruder, 4-02 is a transition core rod, 4-03 is the T-shaped die, and 4-04 is a semi-finished product after 4-02 is extruded and encapsulated by the T-shaped die;

FIG. 5 is a comparative schematic of four embodiments.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features depicted in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and description omit representation and description of components and processes that are not relevant to the present invention and that are known to those of ordinary skill in the art for the sake of clarity.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In a color printer/copier, a transfer belt and a mechanism for driving the transfer belt to rotate are needed during color carbon powder transfer printing, and the mechanism is shown in figure 1, and an anti-skid driving shaft structure of the present application is shown in figures 2A and 2B and comprises a mandrel 2-01, an aluminum pipe 2-02, a composite adhesive layer 2-03 and a rubber pipe 2-04. Referring to the schematic view of the composite adhesive layer of fig. 3, the composite adhesive layer 2-03 includes a primer layer 3-01, a transition adhesive layer 3-02, and a mucilage layer 3-03.