Carbon fiber air swelling shaft suitable for sleeve type satellite flexographic printing machine

Abstract

The utility model discloses a carbon fiber air swelling shaft, belongs to the technical field of printing machines, and particularly relates to a carbon fiber air swelling shaft suitable for a sleeve type satellite flexo printing machine, which comprises a carbon fiber tube, a metal shaft head, a positioning pin and a ball valve, the interior of the carbon fiber tube is in a cavity shape, the metal shaft heads are fixedly installed at the two ends of the carbon fiber tube, the positioning pins are installed on the metal shaft heads, and the multiple ball valves are installed on the metal shaft heads and the carbon fiber tube respectively. According to the air swelling shaft of the satellite flexographic printing machine, the air swelling shaft is made of a carbon fiber material, so that the use performance of equipment is remarkably improved, the energy consumption is reduced, the printing efficiency and quality are improved, and the weight of the equipment is reduced. And due to the advantages, the printing machine has remarkable competitive advantages in the printing industry, and the multiple requirements of modern printing equipment for high performance, high efficiency, environmental protection and energy conservation are met.

Description

TECHNICAL FIELD

[0001] The utility model discloses a carbon fiber gas expansion axle belongs to printing machine technical field, concretely relates to a carbon fiber gas expansion axle suitable for sleeve type satellite flexographic printing machine. BACKGROUND

[0002] The steel gas expansion axle is applied in the traditional satellite type flexographic printing machine quick plate changing system, and the steel gas expansion axle is limited by weight, strength, inertia and many other factors and is determined by the material characteristics of steel. In order to meet the quick plate changing in the existing technology, a cantilever type structure gas expansion axle needs to be adopted. On the one hand, vibration is prone to occurring when the printing plate is operated at high speed, and the printing efficiency and the printing quality cannot be further improved. On the other hand, the printing width and the printing circumference are limited. How to improve the printing speed, improve the printing quality, widen the printing width, increase the printing circumference and reduce energy consumption becomes one of the important signs for measuring whether the satellite type flexographic printing machine is advanced. INVENTION CONTENT

[0003] The utility model provides a carbon fiber gas expansion axle suitable for sleeve type satellite flexographic printing machine, solves the above-mentioned problem.

[0004] Technical scheme: a carbon fiber gas expansion axle suitable for sleeve type satellite flexographic printing machine, the carbon fiber gas expansion axle comprises a carbon fiber pipe, a metal shaft head, a positioning pin and a ball valve.

[0005] The inside of the carbon fiber pipe is in the form of a cavity, the metal shaft head is fixedly installed at both ends of the carbon fiber pipe, the positioning pin is installed on the metal shaft head, and the ball valve is provided with a plurality of ball valves and is respectively installed on the metal shaft head and the carbon fiber pipe.

[0006] In a further embodiment, the metal shaft head comprises a head metal shaft head and a tail metal shaft head.

[0007] The head metal shaft head is fixedly installed at one end of the carbon fiber pipe, the tail metal shaft head is fixedly installed at the other end of the carbon fiber pipe, the positioning pin is fixedly installed on the head metal shaft head, and the ball valve is respectively installed on the tail metal shaft head and the carbon fiber pipe in the form of an equidistant array.

[0008] In a further embodiment, the head metal shaft head is provided with a deep hole along the axial center line in the inside, and the head metal shaft head is provided with an air inlet and is communicated with the deep hole and the inside of the carbon fiber pipe.

[0009] In a further embodiment, the surface of the pipe body of the carbon fiber pipe is coated with a wear-resistant coating.

[0010] Beneficial effects: the utility model discloses the light high -strength characteristic of carbon fiber material, solved the vibration of the prior art existence when high -speed printing, cause the problem of printing and can not promote the printing speed, can not improve the printing quality, can not widen the printing door width, can not increase the printing perimeter, can not reduce the energy consumption etc. The utility model not only is applicable to the flexographic printing machine, but also can be applicable to other printing and packaging equipment that need to change the edition quickly or rotate at high speed, shows its wide applicability and potential market value. Wear resistance improves: the roll body surface of gas inflation axle is compounded with wear -resisting coating. The wear -resisting coating of the utility model can be combined with carbon fiber pipe through brushing, spraying and other modes, adds wear -resisting filler in the resin during preparation, such as silicon dioxide, metal powder, ceramic powder etc. The wear resistance of gas inflation axle is improved, the size deviation caused by abrasion is reduced, the service life is prolonged, and the maintenance cost is reduced.

[0011] In summary, the satellite flexographic printing machine gas inflation axle made of carbon fiber material not only significantly improves the use performance of the equipment, but also realizes the reduction of energy consumption, the improvement of printing efficiency and quality, and the light weight of the equipment. These advantages make it have a significant competitive advantage in the printing industry, meet the multiple needs of modern printing equipment for high performance, high efficiency and environmental protection and energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the sectional view of the utility model.

[0013] Figure 2 is the local schematic Figure 1 of the utility model.

[0014] Figure 3 is the local schematic Figure 2 of the utility model.

[0015] Reference signs: carbon fiber pipe 1, head metal axle head 2, tail metal axle head 3, positioning pin 4, ball valve 5, wear -resisting coating 6. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0017] In the description of the utility model, it is necessary to explain, the term '' center '' '' upper '' '' lower '' '' left '' '' right '' '' vertical '' '' horizontal '' '' internal '' '' external '' and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, with a particular orientation structure and operation, therefore, cannot be understood as a limitation on the utility model. In addition, the term '' first '' '' second '' '' third '' is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the utility model, it is necessary to explain, unless otherwise explicitly provided and limited, the term '' installation '' '' connection '' should be broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the above-mentioned terms in the utility model can be understood according to the specific meaning of the utility model. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0019] A carbon fiber air expansion shaft suitable for sleeve type satellite flexographic printing machine, comprising: carbon fiber pipe 1, head metal shaft head 2, tail metal shaft head 3, positioning pin 4, ball valve 5, wear-resistant coating 6.

[0020] In one embodiment, as shown in Figures 1 to 3 The inside of the carbon fiber pipe is cavity-shaped, the metal shaft head is fixedly installed at both ends of the carbon fiber pipe, the positioning pin is installed on the metal shaft head, and the ball valve is provided with a plurality of ball valves and is respectively installed on the metal shaft head and the carbon fiber pipe.

[0021] Specifically, carbon fiber tubes possess numerous excellent properties such as high strength, high modulus, high temperature resistance, wear resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, thermal conductivity, and far-infrared radiation. However, there are many types of carbon fiber, including high-strength and high-modulus carbon fibers. Choosing the appropriate carbon fiber type is crucial. The carbon fiber used here is high-modulus, specifically 40T. Compared to metals such as steel and aluminum, it has the following advantages: 1. Lightweight: The density of carbon fiber is 2.12 g / cm³, while steel's density is 7.8 g / cm³. Carbon fiber is lightweight, facilitating handling, installation, and operation. 2. High strength: The tensile strength of carbon fiber composites is 3500-6500 MPa, while steel's is 780-1200 MPa. Carbon fiber has high strength and is not easily broken. 3. Good rigidity: Carbon fiber tubes have better rigidity than metal tubes. The elastic modulus of carbon fiber tubes is 220 GPa, while steel's is 206 GPa. It is not only sturdy and durable, capable of withstanding heavy loads, but also less prone to deformation. 4. Low inertia: It starts, decelerates, and stops quickly, facilitating speed control. It also effectively reduces vibration during high-speed core rotation, making it more suitable for high-speed machinery. 5. High efficiency: The lightweight nature of carbon fiber results in low roller resistance, a high critical speed, and minimal vibration. It can increase the rotational speed by more than double that of steel rollers, potentially increasing the overall production line speed by over 50%, thereby increasing output and reducing costs and energy consumption.

[0022] In one embodiment, such as Figures 1 to 3 As shown, the metal shaft head includes a head metal shaft head and a tail metal shaft head;

[0023] The head metal shaft is fixedly installed at one end of the carbon fiber tube, the tail metal shaft is fixedly installed at the other end of the carbon fiber tube, the positioning pin is fixedly installed on the head metal shaft, and the ball valve is installed on the tail metal shaft and the carbon fiber tube in an equidistant array.

[0024] Specifically, non-removable shaft ends (head metal shaft end and tail metal shaft end) are installed at both ends of the carbon fiber tube. The head metal shaft end, where the roller body end connects to the supporting positioning and transmission end, is equipped with a positioning pin and a deep hole along the axial centerline. On the other side, the tail metal shaft end has six ball valves evenly distributed perpendicular to the centerline to optimize gas distribution, flow, and pressure. Furthermore, the carbon fiber tube has multiple ball valve vents along its length to achieve uniform air pressure distribution, ensuring the stability of the printing sleeve and plate-changing efficiency during high-speed operation.

[0025] In one embodiment, such as Figures 1 to 3 As shown, the head metal shaft has a deep hole along the axial center line inside, and the head metal shaft has an air inlet that connects the deep hole and the inside of the carbon fiber tube.

[0026] In one embodiment, as shown in Figures 1 to 3 the surface of the tube body of the carbon fiber tube is coated with a wear-resistant coating.

[0027] In one embodiment, as shown in Figures 1 to 3 the wear-resistant coating is composed of a primer layer and a filling layer.

[0028] Specifically, in order to further improve the wear resistance of the air-expanded shaft roll body, the utility model adopts a multilayer composite wear-resistant coating structure. The first layer is a primer layer with high adhesion, which mainly plays a role in enhancing the bonding force between the coating and the carbon fiber substrate. The primer layer is usually selected from epoxy resin or polyurethane resin, which is uniformly covered on the surface of the carbon fiber tube through spraying or brushing process. The second layer is the middle filling layer, which adds high-hardness wear-resistant fillers such as silicon carbide (SiC), silicon nitride (Si3N4) or aluminum nitride (AIN) powder to improve the hardness and wear resistance of the overall coating. The top layer is selected from polytetrafluoroethylene (PTFE) or polyethylene (PE) based coating with self-lubricating properties to reduce the friction coefficient and prolong the service life of the coating.

[0029] Working principle: first, the printing sleeve is in contact with the wear-resistant coating on the surface of the carbon fiber tube of the carbon fiber air-expanded shaft body and the gas source is connected, the compressed air enters the inner cavity of the roll body through the head metal shaft head air hole, and the gas is blown out through the ball valve, the airflow acts on the compressible material of the inner layer of the printing sleeve, the inner diameter of the sleeve expands and expands, so that the sleeve can easily slide on the air-expanded shaft roll surface, and the positioning pin can prevent the sleeve from sliding out; secondly, after cutting off the gas source, the sleeve immediately shrinks and is fastened with the air-expanded shaft, that is, the installation of the sleeve is completed. Finally, when the sleeve needs to be removed, the gas source is connected again, and the inner diameter of the sleeve is expanded and expanded by the action of the airflow, so that the sleeve can be easily removed.

[0030] Obviously, the above embodiments are only examples for the sake of clarity, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A carbon fibre pneumatic shaft suitable for use in a sleeve satellite flexographic printing press, characterised in that, The carbon fiber inflatable shaft comprises a carbon fiber tube, a metal shaft head, a positioning pin and ball valves. The carbon fiber tube is internally hollow, the metal shaft head is fixedly installed at both ends of the carbon fiber tube, the positioning pin is installed on the metal shaft head, and the ball valves are installed on the metal shaft head and the carbon fiber tube in an equidistant array.

2. A carbon fibre pneumatic shaft suitable for use in a sleeve satellite flexographic printing press according to claim 1, characterised in that, The metal shaft head comprises a head metal shaft head and a tail metal shaft head. The head metal shaft head is fixedly installed at one end of the carbon fiber tube, the tail metal shaft head is fixedly installed at the other end of the carbon fiber tube, the positioning pin is fixedly installed on the head metal shaft head, and the ball valves are installed on the tail metal shaft head and the carbon fiber tube in an equidistant array.

3. A carbon fibre pneumatic shaft suitable for use in a sleeve satellite flexographic printing press according to claim 2, characterised in that, The head metal shaft head is internally provided with a deep hole along an axial center line, and the head metal shaft head is provided with an air inlet communicating with the deep hole and the inside of the carbon fiber tube.

4. A carbon fibre pneumatic shaft suitable for use in a sleeve satellite flexographic printing press as claimed in claim 1, wherein, The surface of the carbon fiber tube is coated with a wear-resistant coating.

5. A carbon fibre pneumatic shaft suitable for use in a sleeve satellite flexographic printing press according to claim 4, characterised in that, The wear-resistant coating comprises a bottom coating layer and a filling layer.

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