Lightweight operating rod, and production method and production equipment of lightweight operating rod

Abstract

The invention discloses a light operating rod and a production method and production equipment of the light operating rod, and belongs to the technical field of insulating tools, the method comprises the following specific steps: step S1, pretreated fiber bundles are soaked in an infiltration solution, the fiber bundles comprise glass fibers and aramid fibers, and the fiber bundles are arranged to form yarn sheets; s2, the yarn sheet soaked in the infiltration liquid is wound around a core mold through production equipment, and a first operating rod prototype is obtained; s3, the first operating rod prototype is directly cured on a core mold and then demolded, the demolded first operating rod prototype is subjected to end face machining, and a second operating rod prototype is obtained; and S4, the second operating rod prototype is subjected to paint spraying treatment, and the lightweight operating rod is obtained. The glass fibers and the aramid fibers are combined and wound according to the ratio of (1-2): 1, the density of the aramid fibers is not higher than that of the glass fibers, and the aramid fibers have high strength and insulation performance, so that the weight of the operating rod can be effectively reduced on the premise that the performance of the operating rod is guaranteed, and the working efficiency and safety are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of insulating tools, and in particular relates to a lightweight operating rod, a production method and production equipment for the lightweight operating rod. Background Art

[0002] In the maintenance and repair of power systems, live working poles are indispensable tools. Traditional live working operating poles are often heavy, which can cause fatigue to operators after long-term use, affecting work efficiency and safety. At the same time, the heavier operating poles may also cause unnecessary impacts on live equipment due to inertia and other factors during operation.

[0003] Most operating rods on the market are made of glass fiber as fiber bundles, and the density of glass fiber is about 2.5g / cm 3 , while the density of aramid fiber is 1.4~1.5g / cm 3 , and has the advantages of high strength, strong insulation and high temperature resistance, and can achieve the goal of preparing a lightweight, high-strength operating rod, but the price of aramid fiber is relatively high, 5 to 10 times that of glass fiber. Summary of the invention

[0004] The purpose of the present invention is to provide a lightweight operating rod, a production method and a production device for the lightweight operating rod, so as to solve the problem that the operating rod in the background technology has a heavy rod body and is difficult to operate.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A method for producing a lightweight operating rod, characterized in that it comprises the following specific steps: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid onto a core mold to obtain a first operating rod prototype; Step S3, curing the first operating rod prototype directly on the core mold and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; Step S4: spray-paint the second operating rod prototype to obtain a lightweight operating rod.

[0006] Preferably, in step S2, 8 to 10 fibers are arranged side by side to form a yarn sheet during winding, in which glass fiber and aramid fiber are combined in a ratio of (1 to 2):1, and the yarn sheet is wound on the core mold in a laying manner. The winding angle refers to the angle between the direction of the fiber on the core mold and the axis of the core mold, and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 80 to 85° in the circumferential direction and 15 to 30° in the longitudinal direction, respectively. The two angles are arranged at intervals. During winding, one circumferential layer is laid, and then one longitudinal layer is laid, and the number of layers is 12 to 16.

[0007] Preferably, during winding, the winding speed of the production equipment is 80-150 rpm / min; the tension of a single fiber is 1.1-4.4N; and the tension of a single fiber decreases by 0.5-1N for every 3-4 layers of winding.

[0008] Preferably, in step S3, curing the first operating rod prototype includes: The first operating rod prototype is cured at 70-80° C. for 3-5 hours, then cured at 110-120° C. for 1.5-2.5 hours, and finally cured at 120-135° C. for 1.5-2.5 hours; wherein, the core mold is rotated throughout the curing process.

[0009] Preferably, in step S4, the surface of the second operating rod prototype after painting is ground and polished.

[0010] Preferably, in step S4, the painting is divided into three times, spraying primer, intermediate paint and topcoat respectively, the primer is water-based epoxy paint, the intermediate paint is water-based epoxy paint, and the topcoat is water-based acrylic polyurethane paint.

[0011] Preferably, the resin is an epoxy resin or a phenolic resin, and the glass transition temperature of the resin is 110° C. to 200° C.

[0012] Another aspect of the present invention provides a lightweight operating rod obtained by the above production method, comprising a fiber bundle and an impregnation liquid, wherein the fiber bundle accounts for 60-80% of the weight of the rod body.

[0013] Another aspect of the present invention further provides a production device for a lightweight operating rod, comprising: A tension control device, used to control the tension of the fiber bundle; A glue dipping tank, which is provided with a glue scraping rod inside, for dipping the fiber bundle with the dipping liquid; The yarn guide nozzle is used to comb and arrange the fiber bundles into yarn sheets; It also comprises a core mold for winding the yarn sheet, and the interior of the core mold is hollow.

[0014] Preferably, the core mold is connected to a steam generating system and a condensing system. The steam generating system is used for curing directly on the core mold after winding is completed, and the condensing system is used for cooling the core mold after curing is completed to achieve rapid demoulding.

[0015] The beneficial effects of the present invention are as follows: The core mold is equipped with a heating device and a water-filled cooling system, which allows for direct curing and demoulding on the core mold, simplifying the production process and improving production efficiency. The fibers are arranged side by side into yarn sheets and then wound, which simplifies the winding steps and enables the fiber ratio to be pre-selected to meet different manufacturing requirements; By winding glass fiber and aramid fiber (1~2):1, the density of aramid fiber is no higher than that of glass fiber, and it has higher strength and insulation performance. Therefore, it is possible to effectively reduce the weight of the operating rod while ensuring its performance, thereby improving operating efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a flow chart of a method for producing a lightweight operating lever according to Embodiment 1 of the present invention; Figure 2 This is a schematic structural diagram of a production device for a lightweight operating lever according to Embodiment 7 of the present invention; Figure 3 This is a schematic diagram of the structure of the core mold of Example 7 of the present invention.

[0017] Among them: 1. core mold; 2. wire guide nozzle; 3. glue dipping tank; 4. tension force control device; 5. fiber bundle. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0019] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1 A method for producing a lightweight operating rod, comprising: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid on the core mold 1 to obtain the first operating rod prototype, when winding, 8 fibers are arranged side by side to form a yarn sheet, the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of 1:1, and the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, and the winding angle refers to the angle between the direction of the fiber on the core mold and the axis of the core mold, and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 80° in the circumferential direction and 15° in the longitudinal direction, respectively. The number of layers is 12, and the two angles are arranged at intervals. When winding, one layer of circumferential direction is laid, and then one layer of longitudinal direction is laid. When winding, the winding speed of the production equipment is 80rpm / min; the tension of a single fiber is 1.1N; for each winding layer, the tension of a single fiber is reduced by 0.5N; Step S3, curing the first operating rod prototype directly on the core mold 1 and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; curing the first operating rod prototype, including: The first operating rod prototype is cured at 70° C. for 3 hours, then at 110° C. for 1.5 hours, and finally at 120° C. for 1.5 hours; wherein the core mold 1 is rotated throughout the curing process; Step S4, spray-painting the second operating rod prototype to obtain a lightweight operating rod; the total spraying thickness is 60-100 μm, of which the primer thickness is 30-50 μm, the oven temperature is set to 80° C.-90° C., and the mold is taken out after being placed for 6-12 hours.

[0023] Example 2 A method for producing a lightweight operating rod, comprising: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid on the core mold 1 to obtain the first operating rod prototype, when winding, 10 fibers are arranged side by side to form a yarn sheet, the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of 1.5:1, and the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, and the winding angle refers to the angle between the direction of the fiber on the core mold and the axis of the core mold, and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 85° in the circumferential direction and 30° in the longitudinal direction, respectively, and the two angles are arranged at intervals, and when winding, a circumferential layer is laid, and then a longitudinal layer is laid, and the number of layers is 16. When winding, the winding speed of the production equipment is 150rpm / min; the tension of a single fiber is 4.4N; for every 4 layers of laying, the tension of a single fiber is reduced by 1N; Step S3, curing the first operating rod prototype directly on the core mold 1 and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; curing the first operating rod prototype, including: The first operating rod prototype was cured at 80° C. for 5 hours, then cured at 120° C. for 2.5 hours, and finally cured at 135° C. for 2.5 hours; wherein the core mold 1 was rotated throughout the curing process; Step S4, spray-painting the prototype of the second operating rod to obtain a lightweight operating rod;

[0024] Example 3 A method for producing a lightweight operating rod, comprising: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid on the core mold 1 to obtain the first operating rod prototype, when winding, 9 fibers are arranged side by side to form a yarn sheet, the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of 2:1, and the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, and the winding angle refers to the angle between the direction of the fiber on the core mold and the axis of the core mold, and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 83° in the circumferential direction and 20° in the longitudinal direction, respectively, and the two angles are arranged at intervals. When winding, a circumferential layer is laid, and then a longitudinal layer is laid, and the number of layers is 15. When winding, the winding speed of the production equipment is 100rpm / min; the tension of a single fiber is 3N; after winding 3 layers, the tension of a single fiber is reduced by 0.8N; Step S3, curing the first operating rod prototype directly on the core mold 1 and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; curing the first operating rod prototype, including: The first operating rod prototype is cured at 75° C. for 4 hours, then at 115° C. for 2 hours, and finally at 130° C. for 2 hours; wherein the core mold 1 is rotated throughout the curing process; Step S4: spray-paint the second operating rod prototype to obtain a lightweight operating rod.

[0025] Example 4 A method for producing a lightweight operating rod, comprising: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid on the core mold 1 to obtain the first operating rod prototype, when winding, 10 fibers are arranged side by side to form a yarn sheet, the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of 1:1, and the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, and the winding angle refers to the angle between the direction of the fiber on the core mold and the axis of the core mold, and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 84° in the circumferential direction and 28° in the longitudinal direction, respectively, and the two angles are arranged at intervals, and when winding, a circumferential layer is laid, and then a longitudinal layer is laid, and the number of layers is 13. When winding, the winding speed of the production equipment is 140rpm / min; the tension of a single fiber is 4N; for every 4 layers of laying, the tension of a single fiber is reduced by 0.6N; Step S3, curing the first operating rod prototype directly on the core mold 1 and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; curing the first operating rod prototype, including: The first operating rod prototype was cured at 72° C. for 3.5 hours, then at 118° C. for 1.7 hours, and finally at 133° C. for 2.2 hours; wherein the core mold 1 was rotated throughout the curing process; Step S4: spray-paint the second operating rod prototype to obtain a lightweight operating rod.

[0026] Example 5 A method for producing a lightweight operating rod, comprising: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid on the core mold 1 to obtain the first operating rod prototype, when winding, 8 fibers are arranged side by side to form a yarn sheet, the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of 5:3, and the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, and the winding angle refers to the angle between the direction of the fiber on the core mold and the axis of the core mold, and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 85° in the circumferential direction and 15° in the longitudinal direction, respectively, and the two angles are arranged at intervals. When winding, a circumferential layer is laid, and then a longitudinal layer is laid, and the number of layers is 15. When winding, the winding speed of the production equipment is 100rpm / min; the tension of a single fiber is 2N; after winding 3 layers, the tension of a single fiber is reduced by 0.7N; Step S3, curing the first operating rod prototype directly on the core mold 1 and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; curing the first operating rod prototype, including: The first operating rod prototype was cured at 77° C. for 4 hours, then at 120° C. for 2 hours, and finally at 135° C. for 1.5 hours; wherein the core mold 1 was rotated throughout the curing process; Step S4: spray-paint the second operating rod prototype to obtain a lightweight operating rod.

[0027] As a preferred example of the above embodiment, in step S1, the fiber pretreatment is: use an ultrasonic cleaning machine to clean the fiber to remove surface impurities and oil stains, and then dry it at 70-80°C for 12-24 hours to remove residual moisture and ensure the impregnation degree of the fiber and the resin; select high-strength, high-modulus glass fiber and aramid fiber with low density and high strength, which can withstand the stretching, bending and other forces during live operation to ensure the stability of the operating rod during use.

[0028] As a preferred example of the above embodiment, in step S2, the preparation process of the impregnation liquid is as follows: in a mixing device, the temperature is 45-60°C and the speed is 120-300 rpm / min, and the resin (such as E44 or E51 type resin), curing agent (such as methyltetrahydrophthalic anhydride), accelerator (such as dimethylbenzylamine) and defoaming agent (such as polyoxyethylene defoaming agent) are mixed and stirred in proportion for 1-2 hours, and then vacuum defoamed for 1.5-3 hours; the raw materials are weighed to prepare the resin glue, and the resin is fully stirred and set aside; as a high-performance adhesive, epoxy resin can be effectively combined with glass fiber or aramid fiber, and can provide higher strength and hardness after curing, and has excellent insulation performance and chemical corrosion resistance; the accelerator can adjust the curing temperature and time to prevent the material from generating stress concentration and ensure strength. A multifunctional defoaming agent is selected, which has strong degassing properties, prevents the retention of tiny bubbles in the system, and improves the uniformity and insulation stability of the product.

[0029] As a preferred example of the above embodiment, in step S2, the core mold 1 is pretreated before winding, and the specific steps are: after the surface of the core mold 1 is polished, it is coated with a release agent as a whole, placed in an oven, and treated at 180-230° C. for 12-24 hours; As a preferred example of the above embodiment, in step S3, the end surface processing specifically includes: after the first operating rod prototype is solidified, using a diamond cutter to perform end surface processing according to a preset size to ensure that the end surface of the first operating rod prototype is smooth and free of burrs.

[0030] As a preferred example of the above embodiment, in step S4, cold water is quickly filled into the cavity of the core mold 1, and the surface of the core mold 1 shrinks, so that the prototype of the second operating rod can be quickly demolded.

[0031] As a preferred example of the above embodiment, in step S4, the painting is divided into three times, spraying primer, intermediate paint and topcoat respectively, the primer is 80μm water-based epoxy paint, the intermediate paint is 80μm water-based epoxy paint, the topcoat is 60μm water-based acrylic polyurethane paint, the oven temperature is set to 80℃~90℃, and the paint is taken out after being placed for 6~12 hours to form.

[0032] As a preferred example of the above embodiment, in the step S4, the outer surface of the second operating rod prototype after painting is polished; The outer surface grinding specifically includes: grinding and polishing the surface of the second operating rod prototype after painting to achieve a smoothness of 0.8 to 1.6; after testing, the product performance can fully comply with GB 13398, and the weight of the rod body is 10 to 30% lighter than that on the market.

[0033] As a preferred example of the above embodiment, the resin is epoxy resin or phenolic resin, and the glass transition temperature of the resin is 110°C to 200°C.

[0034] As a preferred example of the above embodiment, the production equipment is a winding machine.

[0035] Example 6 A lightweight operating rod is composited from resin, curing agent, accelerator, defoaming agent and fiber bundles. The resin is epoxy resin and phenolic resin, and the fiber bundles are glass fiber and aramid fiber. The fiber bundles account for 60-80% of the weight of the composite material.

[0036] The fiber bundle is a combination of glass fibers and aramid fibers.

[0037] The resin is epoxy resin or phenolic resin, and the glass transition temperature is 110-200°C; the mass ratio of the resin, curing agent, accelerator and defoaming agent is 100:85:(0.4-2):0.3; the single filament diameter of the fiber bundle is 10-15 μm, the linear density is 600-1200 tex, and the elastic modulus is greater than 100 GPa.

[0038] After performance benchmarking tests with peers, the operating rod provided by the present application has the advantages of low density, high tensile and compressive strength, etc. Table 1 shows the physical properties of the operating rod of the present application.

[0039] Table 1:

[0040] As a preferred example of the above embodiment, the fiber bundle uses glass fiber and aramid fiber of the same linear density, and 8 to 10 fibers are used simultaneously during winding, wherein the glass fiber and the aramid fiber are wound in a ratio of (1 to 2):1; the winding layer is designed as a sequential cross-layer of two winding angles, and the specific winding angle refers to the angle between the direction of the fiber on the mandrel and the axis of the mandrel, and the angle between the yarn sheet and the longitudinal axis of the mandrel, which are 80 to 85° in the circumferential direction and 15 to 30° in the longitudinal direction, respectively. Through simulation measurement, this design ensures that the operating rod has high tensile and bending resistance. As a preferred example of the above embodiment, the winding angle of the fiber bundle is 15 to 85°, the winding speed is 80 to 150 rpm / min, the tension of a single fiber is 1.1 to 4.4 N, which decreases by 0.5 to 1 N every 3 to 4 layers, and the number of layers is 12 to 16 layers. During curing, the core mold 1 is heated to achieve rapid curing of the product from the inside out, and finally an operating rod with light weight, high mechanical strength and good electrical insulation performance is obtained.

[0041] Table 2 is the simulated circumferential angle-offset correspondence table. The larger the circumferential angle, the smaller the offset. The offset is a specific manifestation of the bending resistance. The smaller the offset, the better the bending resistance. It can be seen that the bending resistance is better when the circumferential angle is 80-85°.

[0042] Table 2: Bending simulation data

[0043] Example 7 A production device for a lightweight operating rod, comprising: A tension control device 4, used to control the tension of the fiber bundle 5; The impregnation tank 3 is provided with a scraper rod inside for impregnating the fiber bundle 5 with the impregnation liquid; A yarn guide nozzle 2 is used to comb and arrange the fiber bundle 5 to form a yarn sheet; It also comprises a core mold 1 for winding the yarn sheet, and the interior of the core mold 1 is hollow.

[0044] The core mold 1 is installed on the production equipment and can provide a heating source during the winding process. After the winding is completed, the core mold 1 is directly cured. After the curing is completed, the temperature inside the core mold 1 is quickly reduced to achieve rapid demoulding.

[0045] The core mold 1 is hollow inside, and an inlet and an outlet are arranged at the end. The inlet is connected to an external electric heating steam generating system, and the outlet is connected to an external condensation system. A water tank is arranged between the condensation system and the electric heating steam generating system.

[0046] The condensation system is connected to the core mold 1 through a two-way valve, the electric heating steam generating system is connected to the core mold 1 through a two-way valve, the electric heating steam generating system is connected to a water tank, the condensation system is connected to the water tank, and the water tank is connected to the core mold 1 through a two-way valve.

[0047] The water in the box passes through the electric heating steam generating system to form high-temperature steam, which is passed into the core mold 1 to solidify the product; when demolding, the steam is first returned to the water tank through the condensation system, and the cooling water in the water tank first enters the cavity from the outlet pump through a two-way pump to quickly cool the core mold 1. According to the principle of thermal expansion and contraction, the contact surface between the product and the mold is separated to achieve demolding, and then returned to the water tank through the outlet.

[0048] When in use, first, a number of fibers fixed on the fiber bundle 5 pass through the tensioning force control device 4, and then the fiber bundle 5 is immersed in the dipping tank 3 containing the impregnation liquid and equipped with a scraper rod, and then the fiber bundle 5 fully impregnated with the impregnation liquid passes through the wire guide nozzle 2 to be combed and arranged to form a yarn sheet, and finally the yarn sheet impregnated with the impregnation liquid is wound on the core mold 1 according to the set winding parameters; the core mold 1 is equipped with a heating device inside, which can provide a heating source during the winding process to achieve preheating of the rod body. After the winding is completed, the rod body can be directly cured on the mold. After the curing is completed, the core mold 1 is quickly cooled to achieve rapid demolding of the rod body.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A method for producing a lightweight operating rod, characterized in that: The specific steps include: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2, using production equipment to wind the yarn sheet soaked in the impregnation liquid onto the core mold (1) to obtain a first operating rod prototype; Step S3, curing the first operating rod prototype directly on the core mold (1) and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; Step S4: spray-paint the second operating rod prototype to obtain a lightweight operating rod.

2. The method for producing a lightweight operating lever according to claim 1, characterized in that: In step S2, 8 to 10 fibers are arranged side by side to form a yarn sheet during winding, wherein the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of (1 to 2):1, and the yarn sheet is wound on the core mold (1) in a laying manner. The winding angle refers to the angle between the direction of the fiber on the core mold (1) and the axis of the core mold (1), and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 80 to 85° in the circumferential direction and 15 to 30° in the longitudinal direction, respectively. The two angles are arranged alternately. During winding, one layer of circumferential direction is laid, and then one layer of longitudinal direction is laid, and the number of layers laid is 12 to 16.

3. The method for producing a lightweight operating rod according to claim 1, characterized in that: In step S2, during winding, the winding speed of the production equipment is 80-150 rpm / min; the tension of a single fiber is 1.1-4.4N; and the tension of a single fiber decreases by 0.5-1N for every 3-4 layers of winding.

4. The method for producing a lightweight operating lever according to claim 1, characterized in that: In step S3, the first operating rod prototype is solidified, including: The first operating rod prototype is cured at 70-80° C. for 3-5 hours, then cured at 110-120° C. for 1.5-2.5 hours, and finally cured at 120-135° C. for 1.5-2.5 hours; wherein the core mold (1) is rotated throughout the curing process.

5. The method for producing a lightweight operating lever according to claim 1, characterized in that: In step S4, the surface of the second operating rod prototype after painting is ground and polished.

6. The method for producing a lightweight operating rod according to claim 1, characterized in that: In step S4, the painting is divided into three times, spraying the primer, the intermediate paint and the topcoat respectively.

7. The method for producing a lightweight operating rod according to claim 6, characterized in that: In step S4, the primer is water-based epoxy paint, the intermediate paint is water-based epoxy paint, and the topcoat is water-based acrylic polyurethane paint.

8. A lightweight operating lever obtained by the production method according to any one of claims 1 to 7, characterized in that: The rod comprises a fiber bundle, wherein the fiber bundle accounts for 60 to 80% of the mass of the rod body.

9. A production device for producing the lightweight operating lever according to claim 8, comprising: A tension control device (4) for controlling the tension of the fiber bundle (5); A glue dipping tank (3) is provided with a glue scraping rod inside, and is used to soak the fiber bundle (5) with the soaking liquid; A yarn guide nozzle (2) is used to comb and arrange the fiber bundle (5) to form a yarn sheet; The invention is characterized in that it also comprises a core mold (1) for winding the yarn sheet, and the interior of the core mold (1) is hollow.

10. The production equipment according to claim 9, characterized in that The core mold (1) is connected to an electric heating steam generating system and a condensing system. The electric heating steam generating system is used to directly perform solidification on the core mold (1) after winding is completed, and the condensing system is used to cool the core mold (1) after solidification is completed to achieve rapid demoulding.

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