Automatic paving and winding forming equipment

Abstract

The invention discloses automatic paving and winding forming equipment, relates to the technical field of manufacturing of electric power system insulation bucket arm vehicles, and particularly belongs to a design and manufacturing method of automatic paving and winding forming equipment of an insulation extension arm. In order to realize the automatic winding, paving and enhancing process of the extending arm of the insulated boom truck, the invention designs a special forming device for a multi-edge cylinder extending arm structure, and the high-precision automatic paving and enhancing of the insulated extending arm in an edge area is realized by assembling trapezoidal cushion angle rolls at two ends of a core mold and integrating a cloth tape carding and rapid clamping device; according to the equipment, the flatness and compactness of a paving layer are guaranteed, meanwhile, the position precision of cushion corner paving and the overall stability of a system are remarkably improved, and the equipment has the advantages of being convenient and fast to install and adjust, high in paving and positioning precision, good in operation simplicity and convenience, long in service life and high in economic benefit; the technical problems that in the traditional technology, a corner padding cloth belt is prone to sliding, the mechanism manufacturing cost is high, and operation is complex are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of manufacturing insulated bucket trucks for power systems, and belongs to the design and manufacturing method of automatic laying and winding forming equipment for insulated boom extension. Background Technology

[0002] Insulated boom trucks are key high-altitude work equipment used in power systems for high-voltage environment maintenance, repair, and fault handling. Their development reflects a significant evolution from wood-based materials to modern high-performance composite materials. Currently, composite materials, represented by glass fiber reinforced epoxy resin, have become the mainstream choice to meet the dual requirements of mechanical load-bearing capacity and insulation reliability due to their excellent dielectric properties, high specific strength and specific modulus, and superior resistance to environmental aging. However, the final performance of composite material components depends not only on the material itself but also on precision manufacturing processes. The mandrel, as the core carrier of the winding process, directly determines the accuracy of fiber placement and curing quality through its structural rigidity, thermal stability, and surface quality. This, in turn, restricts the overall mechanical properties and long-term dielectric reliability of the insulated boom, and is a key technological support for the equipment's development towards high performance and high reliability.

[0003] To address issues such as stress concentration and electrical performance problems that easily occur at the corners of box-type structures, edge reinforcement is achieved by using a special core mold on the basis of winding molding. This enhances local load-bearing efficiency, inhibits crack initiation, and ensures the integrity and durability of insulation performance. Summary of the Invention

[0004] This invention is achieved through the following technical solution: This invention provides an automatic laying and winding forming equipment, including a trolley, a yarn frame assembly, a glue-impregnating assembly, a nozzle assembly, a motor, an active end, a mandrel, a tailstock, a base, and a machine tool. The machine tool is characterized by having a track at its upper end, the trolley moving left and right on the track, a yarn frame assembly at the upper end of the trolley, a glue-impregnating assembly at the front end of the yarn frame assembly, and a nozzle assembly at the front end of the glue-impregnating assembly. A tailstock is provided on the left side of the upper end face of the base, and an active end is provided on the right side of the upper end face of the base. A core mold with a polygonal prism is fixed between the active end and the tailstock. A connecting beam is provided between the base and the machine tool, and the thread nozzle assembly is located on the upper right side of the mandrel.

[0005] Preferably, the core mold consists of a front-end roller, a pressure roller, a fabric strip, a quick clamp, a core mold main shaft, a trapezoidal corner pad roll, and a corner pad roll fixing ring shaft. The core mold is clamped between the driving end and the tailstock via the core mold main shaft. The trapezoidal corner pad roll is fixed to the core mold main shaft with bolts. The corner pad roll fixing ring shaft is fixed to the top of one end of the trapezoidal corner pad roll with bolts. The front-end roller is integrally provided on the outside of the corner pad roll fixing ring shaft. The fabric strip is pressed against the corresponding position of the front-end roller with bolts. The pressure roller is fixed to the four corners of one side of the trapezoidal corner pad roll with bolts. The four corners of the other end of the trapezoidal corner pad roll are fixed to the quick clamp with bolts. The fabric strip is pulled out from the fabric strip roll fixed to the front-end roller, passes through the pressure roller, and is pulled tightly against the edge of the core mold to the other end of the quick clamp for fixing.

[0006] Preferably, the nozzle assembly can move laterally along the side of the mandrel with the carriage, and the connecting beam is fixedly connected to the base and the machine tool by bolts.

[0007] Preferably, a slide rail is provided at the lower end of the tailstock, and the position of the tailstock is adjusted according to the length of the core mold.

[0008] Preferably, a motor is provided on the rear side of the active end.

[0009] Preferably, before the tape laying process begins, the trapezoidal corner roll needs to be secured by the corner roll fixing ring shaft. During the laying process, the operator first leads the tape out from the front roll, passes it through the pressure roller, and pulls it to the quick clamp at the other end of the mandrel for initial fixation and clamping. Then, the active end pressure roller is precisely adjusted so that the tape continuously provides appropriate pressure during dynamic laying. During this process, the tape is laid neatly, densely, and completely flat on the multi-faceted surface of the mandrel.

[0010] Preferably, the active end, tailstock, and core mold are clamped together by a chuck.

[0011] Beneficial effects This invention designs an automatic laying and winding molding equipment. This equipment innovatively integrates a fiber winding system consisting of a core mold for automatic laying of reinforcing tape, a yarn frame assembly, an impregnation assembly, and a nozzle assembly onto the same platform. Through a multi-axis linkage CNC system, it achieves coordinated operation of the two processes, solving the problems of low efficiency and positioning errors caused by separate laying and winding operations in traditional processes, and significantly improving the molding efficiency and manufacturing precision of composite materials.

[0012] This invention designs a multi-faceted cylindrical mandrel structure. Targeting the box-shaped cross-section characteristics of the insulating extension arm, a dedicated mandrel system with a trapezoidal pad corner roller mechanism and a quick-clamping device is designed. The mandrel's two ends are precisely positioned via a main shaft, while the yarn frame assembly, impregnation assembly, and nozzle assembly provide a constant tension feeding device. The quick-clamping mechanism ensures accurate positioning and reliable fixation of the reinforcing material during the multi-faceted structure molding process. Attached Figure Description

[0013] Figure 1 Overall design drawing of automated wrapping and forming equipment; Figure 2 Schematic diagram of an automated wrapping and forming equipment system; Figure 3 Schematic diagram of the core mold component of an automated wrapping and winding equipment; Figure 4 Drawing of trapezoidal corner bead roll part; In the diagram: 1. Cart; 2. Yarn frame assembly; 3. Impregnation assembly; 4. Nozzle assembly; 5. Motor; 6. Drive end; 7. Core mold; 8. Tailstock; 9. Front winding shaft; 10. Pressure roller; 11. Fabric belt; 12. Quick clamp; 13. Core mold spindle; 14. Trapezoidal corner roller; 15. Corner roller fixing ring shaft; 16. Base; 17. Machine tool; 18. Connecting beam. Detailed Implementation

[0014] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0015] To meet The insulated bucket truck requires multi-faceted cylindrical extension arms for winding and laying reinforcement, achieving coordinated winding and laying operations, and featuring automatic corner padding and bundling functions. This paper presents an automated laying and winding forming equipment, employing an integrated design of the corner pad roll and rotating spindle, equipped with a combing guide and clamping mechanism. This ensures complete laying and rapid clamping of each edge of the multi-faceted core mold, while reducing structural weight for easy assembly and disassembly, thereby improving production efficiency and economy.

[0016] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0017] Example 1 Figure 1 This is the overall design drawing for an automated wrapping and winding equipment. Figure 2 This invention provides an automatic wrapping and forming equipment system, comprising a trolley, a yarn frame assembly, an adhesive impregnation assembly, a nozzle assembly, a motor, an active end, a mandrel, a tailstock, a base, and a machine tool. The machine tool is characterized by having a track at its upper end, the trolley moving left and right along the track, a yarn frame assembly at the upper end of the trolley, an adhesive impregnation assembly at the front end of the yarn frame assembly, and a nozzle assembly at the front end of the adhesive impregnation assembly. A tailstock is provided on the left side of the upper end face of the base, and an active end is provided on the right side of the upper end face of the base. A core mold with a polygonal prism is fixed between the active end and the tailstock. A connecting beam is provided between the base and the machine tool, and the thread nozzle assembly is located on the upper right side of the mandrel.

[0018] The nozzle assembly can move laterally along the side of the core mold with the trolley, and the connecting beam is fixedly connected to the base and the machine tool by bolts.

[0019] The lower end of the tailstock is equipped with a slide rail, and the position of the tailstock is adjusted according to the length of the core mold.

[0020] A motor is installed on the rear side of the active end.

[0021] Before the tape laying process begins, the trapezoidal corner roll needs to be tightened by the corner roll fixing ring shaft. During the laying process, the operator first leads the tape out from the front roll, passes it through the pressure roller, and pulls it to the quick clamp at the other end of the mandrel for initial fixing and clamping. Then, the active end pressure roller is precisely adjusted so that the tape continuously provides appropriate pressure during dynamic laying. During this process, the tape is laid neatly, densely and completely flat on the multi-faceted surface of the mandrel.

[0022] The active end, tailstock, and core mold are clamped together by a chuck.

[0023] Figure 3 The diagram shows the structure of a multi-faceted edge-laying and winding mandrel assembly. This assembly mainly consists of functional units such as a front-end reel, pressure rollers, fabric tape, quick clamps, mandrel main shaft, trapezoidal corner pad rolls, and corner pad roll fixing rings. The active end, tailstock, and mandrel are clamped together by a chuck, forming a stable rotational support structure. Before the fabric tape laying process begins, the trapezoidal corner pad rolls must be tightened using the corner pad roll fixing rings to prevent them from loosening or falling off due to centrifugal force during high-speed rotation of the main shaft, ensuring geometric stability during the molding process. During the laying process, the operator first leads the fabric tape from the front-end reel, passes it through the pressure rollers, and pulls it to the other end of the mandrel, where it is initially fixed and clamped using quick clamps. Then, precise adjustments are made to the active-end pressure rollers to continuously provide appropriate pressure during dynamic laying, ensuring that the fabric tape is neatly, densely, and completely adhered to the multi-faceted surface of the mandrel, effectively avoiding defects such as wrinkles, gaps, or air bubbles, and guaranteeing the structural performance of the subsequent composite material product.

[0024] Assembly relationship of the special core mold for multi-faceted column winding and laying: The trapezoidal corner pads are fixed to the main shafts at both ends of the core mold and are connected and secured by screws; The retaining ring shaft is fixed to one side of the core mold using bolts; The fiber-reinforced fabric roll is tightened to the corresponding position of the corner roll fixing ring shaft by bolts; On the other side of the core mold, use bolts to secure the quick clamp to the trapezoidal corner roll. Pull the fabric strip out of the fabric strip roll fixed to the corner roll fixing ring shaft, pass it through the pressure roller, so that the fabric strip is close to the edge of the core mold, and pull it to the other end quick clamp for fixing.

[0025] To meet the process requirements of laying corner pads on multi-sided prisms, a trapezoidal corner pad roll structure was designed. This structure can be fitted onto both ends of the mandrel for precise alignment. Specific flat surfaces are machined at its edges for mounting pressure rollers and quick-clamping devices. All components are fixed using bolt connections. The machining accuracy of the cut surfaces directly affects the combing effect during fiber-reinforced tape laying and the interface flatness and density after compression; therefore, it is a key control element for achieving high-quality molding.

[0026] Implementation 2 Installation sequence: First, place the mandrel in the assembly area using hoisting equipment. Attach the front-end reel to the active end of the mandrel, and then attach trapezoidal corner pads to both the active and passive ends, securing them with bolts. Install the mandrel spindles at both ends, clamp the entire mandrel onto the machine tool, open the corner pad retaining ring, install and lock the reinforcing fabric roll to prevent it from falling off during mandrel rotation. Finally, check and adjust the combing mechanism and quick-clamping device to ensure proper operation.

[0027] Disassembly sequence: The disassembly process is the reverse of the assembly process. First, remove the corner pads from the front reel and tighten the corner pad fixing ring to ensure the safe storage of materials and prevent loss of parts during disassembly. Then, remove the core mold from the machine tool chuck and place it in the core mold assembly area. Loosen the bolts in sequence and remove the core mold spindle, front reel, trapezoidal corner pads, and other components to complete the overall disassembly of the core mold and hoist it to the designated position.

[0028] Specific workflow: Before the tape laying process begins, the trapezoidal corner roll needs to be tightened by the corner roll fixing ring shaft. During the laying process, the operator first leads the tape out from the front roll, passes it through the pressure roller, and pulls it to the quick clamp at the other end of the mandrel for initial fixing and clamping. Then, the active end pressure roller is precisely adjusted so that the tape continuously provides appropriate pressure during dynamic laying. During this process, the tape is laid neatly, densely and completely flat on the multi-faceted surface of the mandrel.

[0029] The trolley moves laterally in a circular motion on the machine tool track. A rotating device is located at the top of the nozzle, allowing it to rotate as needed. The mandrel is powered by a motor at the drive end, completing its rotation. Fibers are guided from the yarn rack to the impregnation assembly for resin impregnation. Precise tension control within the assembly then guides the fibers to the nozzle for winding. The components are coordinated using program control to complete the fiber placement on the mandrel surface. The above tape laying, pressing, and fiber winding processes are repeated according to process requirements.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic wrapping and forming equipment, comprising a trolley (1), a yarn frame assembly (2), a glue-impregnating assembly (3), a nozzle assembly (4), a motor (5), an active end (6), a core mold (7), a tailstock (8), a base (16), and a machine tool (17), characterized in that, The upper end of the machine tool (17) is provided with a track, and the trolley (1) moves left and right on the track of the machine tool (17). The upper end of the trolley (1) is provided with a yarn frame assembly (2), the front end of the yarn frame assembly (2) is provided with a glue-impregnating assembly (3), and the front end of the glue-impregnating assembly (3) is provided with a nozzle assembly (4). A tailstock (8) is provided on the left side of the upper end face of the base (16), and an active end (6) is provided on the right side of the upper end face of the base (16). A core mold (7) with a multi-sided prism is fixed between the active end (6) and the tailstock (8). A connecting beam (18) is provided between the base (16) and the machine tool (17), and the thread nozzle assembly (4) is located on the upper right side of the core mold (7).

2. The composite material winding mandrel for hazardous chemical storage tanks according to claim 1, characterized in that, The core mold (7) consists of a front-end roller (9), a pressure roller (10), a fabric belt (11), a quick clamp (12), a core mold main shaft (13), a trapezoidal pad corner roll (14), and a pad corner roll fixing ring shaft (15). The core mold (7) is clamped between the active end (6) and the tailstock (8) via the core mold main shaft (13). The trapezoidal pad corner roll (14) is fixed to the core mold main shaft (13) by bolts. The pad corner roll fixing ring shaft (15) is fixed to the top of one end of the trapezoidal pad corner roll (14) by bolts. An integral front-end roll (9) is set on the outside of the corner roll fixing ring (15). The fabric strip (11) is pressed to the corresponding position of the front-end roll (9) by bolts. The pressure roller (10) is fixed to the four corners of the trapezoidal pad corner roll (14) on one side by bolts. The four corners of the trapezoidal pad corner roll (14) at the other end are fixed to the quick clamp (12) by bolts. The fabric strip (11) is pulled out from the fabric strip roll fixed to the front-end roll (9), passes through the pressure roller (10), so that the fabric strip is close to the core mold edge and pulled to the quick clamp (13) at the other end for fixing.

3. The composite material winding mandrel for hazardous chemical storage tanks according to claim 1, characterized in that, The nozzle assembly (4) can move laterally along the side of the core mold (7) with the trolley (1), and the connecting beam (18) is fixedly connected to the base (16) and the machine tool (17) by bolts.

4. The composite material winding mandrel for hazardous chemical storage tanks according to claim 1, characterized in that, The tailstock (8) is provided with a slide rail at its lower end, and the position of the tailstock (8) is adjusted according to the length of the core mold (7).

5. The composite material winding mandrel for hazardous chemical storage tanks according to claim 1, characterized in that, A motor (5) is installed on the rear side of the active end (6).

6. The composite material winding mandrel for hazardous chemical storage tanks according to claim 2, characterized in that, Before the tape (11) laying process begins, the trapezoidal corner roll (14) needs to be tightened by the corner roll fixing ring shaft (15). During the laying process, the operator first leads the tape (11) on the front end roll (9), passes it through the pressure roller (10), and pulls it to the quick clamp (12) at the other end of the core mold (7) for initial fixing and clamping. Then, the active end pressure roller (10) is precisely adjusted so that the tape (11) continuously provides appropriate pressure during dynamic laying. During this process, the tape (11) is laid neatly, densely and completely flat on the multi-faceted surface of the core mold (7).

7. The composite material winding mandrel for hazardous chemical storage tanks according to claim 1, characterized in that, The active end (6), tailstock (8) and core mold (7) are clamped together by a chuck.

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