Extra-high-voltage direct-current composite insulator hardware zinc ring forming device and method

Abstract

The invention provides an extra-high-voltage direct-current composite insulator hardware zinc ring forming device and method.The forming device comprises a workbench, a mold combination, an opening and closing mechanism, an ejection mechanism, a vibration mechanism and a water cooling mechanism, and the mold combination comprises multiple zinc ring casting molds transversely arranged on the workbench; the opening and closing mechanism comprises multiple sets of opening and closing air cylinders, and each set of opening and closing air cylinders comprises two longitudinal air cylinders which are arranged on the two longitudinal sides of the workbench correspondingly, connected with the outer sides of the two half molds and used for driving the molds to be longitudinally opened and closed; the ejection mechanism comprises a plurality of groups of ejection cylinders, and each group of ejection cylinders comprises at least one vertical cylinder and is used for upwards ejecting a cast-molded workpiece; the vibrating mechanism comprises two vibrators which are arranged at the two transverse ends of the workbench correspondingly. And the water cooling mechanism comprises a plurality of groups of circulating water cooling pipes which are respectively used for cooling the plurality of groups of zinc ring casting molds. By the adoption of the technical scheme, the hardware fitting zinc ring forming production efficiency can be greatly improved, and the zinc ring forming quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of hardware forming, and in particular to a device and method for forming a zinc ring of a hardware of an ultra-high voltage direct current composite insulator. Background Art

[0002] DC composite insulator fittings are key components in DC transmission lines, supporting and insulating conductors. Since DC electric fields can cause electrolytic corrosion to fittings, an anode metal zinc ring is usually placed at the end of the DC fitting as a sacrificial electrode to ensure the safe operation of the power grid. Therefore, the quality of the zinc ring at the end of the DC fitting is one of the key factors affecting the normal operation of power grid equipment.

[0003] At present, UHV DC composite insulation fittings still use the casting zinc ring process, which mostly uses a baking plate to heat the zinc ring to be cast, and then uses a mold to cast the zinc ring. This casting process is prone to defects such as pores and cracks, and the casting surface fusion is low, making it difficult to ensure product quality; in addition, there is also the problem of slow casting due to mold overheating, and the mold needs to be cooled frequently, resulting in low production efficiency. Summary of the invention

[0004] In order to better solve the above problems, the present invention provides a device and method for forming zinc rings of ultra-high voltage direct current composite insulator hardware, which can greatly improve the production efficiency of hardware zinc ring forming and ensure product quality.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides a zinc ring forming device for ultra-high voltage direct current composite insulator hardware, comprising a workbench, a mold assembly, an opening and closing mechanism, an ejection mechanism, a vibration mechanism, and a water cooling mechanism, wherein the mold assembly comprises a plurality of groups of zinc ring casting molds arranged transversely on the workbench, the zinc ring casting molds having a molding cavity matching the position of the hardware workpiece to be cast with the zinc ring; the opening and closing mechanism comprises a plurality of groups of opening and closing cylinders, each group of opening and closing cylinders comprises two longitudinal cylinders, which are respectively arranged on both sides of the longitudinal direction of the workbench and the telescopic ends are connected to the outer sides of two half molds of a set of zinc ring casting molds, so as to drive the mold to open and close longitudinally; the ejection mechanism comprises a plurality of groups of ejection cylinders, each group of ejection cylinders comprises at least one vertical cylinder, which are respectively arranged at the corresponding positions of the plurality of zinc ring casting molds under the workbench, so as to eject the cast workpiece upward; the vibration mechanism comprises two vibrators, which are respectively arranged at the two ends of the transverse direction of the workbench; the water cooling mechanism comprises a plurality of groups of circulating water cooling pipes, which are respectively used to cool the plurality of groups of zinc ring casting molds.

[0006] Optionally, longitudinal guide grooves are provided on both sides of each group of zinc ring casting molds on the workbench surface, and the two half molds of each group of zinc ring casting molds can slide along the longitudinal guide grooves on both sides respectively, and can be opened and closed under the drive of the longitudinal cylinders on both sides.

[0007] Optionally, each group of ejection cylinders includes two vertical cylinders, and the workbench is provided with two through holes corresponding to each group of zinc ring casting molds. The tops of the telescopic ends of the two vertical cylinders are connected with insulation rods extending from the through holes, and the insulation rods can move up and down in the through holes driven by the vertical cylinders.

[0008] Optionally, a metal fixture is connected to the top of the heat insulation rod. Optionally, each group of circulating water-cooling pipes includes two water-cooling branch pipes, which respectively pass through two half molds of a group of zinc ring casting molds.

[0009] Optionally, the water cooling mechanism further includes two water cooling main pipes, and the circulating water cooling pipes corresponding to the left and right parts of the zinc ring casting mold are respectively connected in series and then connected to one water cooling main pipe.

[0010] Optionally, a workbench bracket is further included, and the workbench is installed on the bracket through a plurality of supporting columns.

[0011] Optionally, it also includes an opening and closing switch assembly and / or an ejection switch assembly, the opening and closing switch assembly includes multiple opening and closing switches, which are used for the extension and retraction of each group of longitudinal cylinders; the ejection switch assembly includes multiple ejection switches, which are used to control the extension and retraction of each group of ejection cylinders.

[0012] Optionally, the left and right parts of the multiple groups of zinc ring casting molds respectively correspond to an opening and closing switch, which is used to control the synchronous extension and retraction of the multiple groups of longitudinal cylinders corresponding to the left and right parts of the zinc ring casting molds; the left and right parts of the multiple groups of zinc ring casting molds respectively correspond to an ejection switch, which is used to control the synchronous extension and retraction of the multiple groups of ejection cylinders corresponding to the left and right parts of the zinc ring casting molds.

[0013] The present invention also provides a method for forming a zinc ring of a UHV DC composite insulator hardware, which adopts any of the above-mentioned UHV DC composite insulator hardware zinc ring forming devices, including: step 1: placing the hardware workpiece into the left part of the mold, starting the left opening and closing switch to make the opening and closing cylinder drive the mold to close the mold, starting the left vibrator to start vibrating, and casting zinc liquid at the same time, and stopping the left vibrator after the casting is completed; step 2: placing the hardware workpiece into the right part of the mold, starting the right opening and closing switch to make the opening and closing cylinder drive the mold to close the mold, starting the right vibrator to start vibrating, and Casting zinc liquid at the same time, and stopping the right vibrator after casting is completed; step 3: after the zinc ring of the left workpiece solidifies, start the left opening and closing switch to make the opening and closing cylinder drive the mold to open the mold, start the left ejection switch to make the ejection cylinder eject the left workpiece, and reset the ejection cylinder after the workpiece is taken out; repeat steps 1 and 3 in a cycle when changing the workpiece; step 4: after the zinc ring of the right workpiece solidifies, start the right opening and closing switch to make the opening and closing cylinder drive the mold to open the mold, start the right ejection switch to make the ejection cylinder eject the right workpiece, and reset the ejection cylinder after the workpiece is taken out; repeat steps 2 and 4 in a cycle when changing the workpiece.

[0014] The ultra-high voltage DC composite insulator hardware zinc ring forming device and method of the embodiment of the present invention can simultaneously perform zinc ring forming operations on multiple workpieces by arranging multiple groups of zinc ring casting molds on a workbench, which can greatly improve production efficiency; moreover, by arranging opening and closing cylinders on both sides of the mold and arranging an ejection cylinder under the mold, the opening and closing cylinders can be used to control the opening and closing of the mold during the zinc ring casting and molding process, and the ejection cylinders can be used to eject the workpieces of the molded zinc rings. The degree of automation is high, which can further improve production efficiency, reduce labor intensity and cost, and the operation is also simpler, and the technical level requirements for the operating workers are relatively low.

[0015] Furthermore, the hardware zinc ring forming device and method can utilize the vibration of the vibrator to evenly and fully cast the zinc liquid during the zinc ring casting process by installing vibrators on both sides of the workbench, without bubbles or pores, and with a high degree of fusion of the casting surface, thereby ensuring the product yield. In addition, a water cooling mechanism is provided to utilize circulating water to effectively cool the mold during the zinc ring casting process, thereby avoiding the problem of overheating of the mold requiring shutdown for cooling, thereby further improving production efficiency.

[0016] The hardware zinc ring forming device has a reasonable structural design, stable and reliable performance, and is easy to operate, and can perform hardware zinc ring forming production operations with high efficiency and high quality; the hardware zinc ring forming method is divided into two parts through a variety of molds for cyclic operations, and only simple operations are required to greatly improve the hardware zinc ring forming production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A three-dimensional diagram of a zinc ring forming device for a UHV DC composite insulator hardware according to an embodiment of the present invention; Figure 2 It is a front view of a zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to an embodiment of the present invention; Figure 3 It is a rear view of the zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to an embodiment of the present invention; Figure 4 It is a left view of the zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to an embodiment of the present invention; Figure 5 A top view of a zinc ring forming device for a UHV DC composite insulator hardware according to an embodiment of the present invention; Figure 6Schematic diagram of a workpiece formed with a zinc ring according to an embodiment of the present invention.

[0019] Reference numerals: 1. Bracket; 2. Workbench; 3. Support column; 4. Zinc ring casting mold; 5. Longitudinal cylinder; 6. Vertical cylinder; 7. Vibrator; 8. Water cooling main pipe; 9. Water cooling branch pipe; 10. Workpiece; 11. Open and close switch; 12. Ejector switch; 13. Heat insulation guard plate; 14. Side panel. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the basic implementation disclosed below.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] like Figure 1-5 As shown, the zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to the embodiment of the present invention comprises a bracket 1, a workbench 2, a mold assembly, an opening and closing mechanism, an ejection mechanism, a vibration mechanism, and a water cooling mechanism.

[0023] The support 1 may include a support surface and four support legs for supporting the workbench 2; of course, the support 1 may also be in other forms as long as it can provide stable support.

[0024] The workbench 2 is plate-shaped and is mounted on the bracket 1 through a plurality of support columns 3. The workbench 2 is used to carry equipment or components such as molds and cylinders, and its upper surface is the working surface of the hardware zinc ring forming device.

[0025] The mold assembly includes a plurality of groups of zinc ring casting molds 4 arranged on the workbench 2 in the horizontal direction (the length direction of the workbench 2, i.e., the left and right direction of the workbench 2 in the figure). In this embodiment, the zinc ring casting mold 4 adopts a Havers mold form, including two half molds, such as the front half mold and the rear half mold shown in the figure. The two half molds are arranged on the table surface of the workbench 2 through a mold fixing structure such as a base or a mold sleeve. Of course, the mold fixing device can also be integrated on the mold, or the mold can be directly set on the workbench 2. After the two half molds are closed, there is a zinc ring molding cavity inside the mold, which matches the part of the metal workpiece 10 to be casted with the zinc ring. The zinc ring can be cast by placing the workpiece 10 to be cast into the molding cavity.

[0026] The opening and closing mechanism includes multiple groups of opening and closing cylinders, each group of opening and closing cylinders includes two longitudinal cylinders 5 (the longitudinal direction is the width direction of the workbench 2, that is, the front-to-back direction of the workbench 2 in the figure), the number of groups of opening and closing cylinders is consistent with the number of groups of zinc ring casting molds 4, and corresponds one to one. The two longitudinal cylinders 5 of each group of opening and closing cylinders are respectively connected to the two sides of a set of zinc ring casting molds 4, that is, the fixed ends of the two opening and closing cylinders are fixedly set on both sides of the longitudinal direction of the workbench 2, and the telescopic ends of the two cylinders are respectively connected to the outside of the two half molds of a set of molds. The two cylinders and the two molds are on a longitudinal opening and closing line, and the telescopic movement of the two cylinders can drive the two half molds to move longitudinally, approach or move away from each other, so as to drive a set of zinc ring casting molds 4 to open or close the mold longitudinally.

[0027] The ejection mechanism includes multiple groups of ejection cylinders, each group of ejection cylinders includes at least one vertical cylinder 6, the number of groups of ejection cylinders is consistent with the number of groups of zinc ring casting molds 4, and corresponds one to one, and the vertical cylinders 6 of each group of ejection cylinders are respectively arranged below the workbench 2 at a corresponding set of zinc ring casting molds 4, and are used to eject the cast workpiece 10 upward. Specifically, the fixed end of the vertical cylinder 6 can be connected to the lower table surface of the workbench 2 through a fixed frame, so as to realize the installation of the vertical cylinder 6; the telescopic end of the vertical cylinder 6 faces upward, and a through hole is opened on the workbench 2, which is aligned with the workpiece 10 upward and the vertical cylinder 6 downward, and the vertical cylinder 6 can extend upward from the through hole.

[0028] The vibration mechanism includes two vibrators 7, which are respectively arranged at the two lateral ends of the workbench 2. They vibrate during the zinc ring casting process to drive the workbench 2 to vibrate, which can further drive the mold on the workbench 2 to vibrate, so that the zinc liquid in the mold molding cavity can flow rapidly and evenly, and the vibration can be used to smoothly discharge the air in the zinc liquid, so that the zinc liquid in the molding cavity is cast full and free of bubbles, and the zinc liquid can be effectively integrated with the casting surface of the workpiece, so as to ensure the internal quality and appearance quality of the zinc ring at the same time.

[0029] The water cooling mechanism includes multiple groups of circulating water cooling pipes, which are respectively used to cool multiple groups of zinc ring casting molds 4. The circulating water cooling pipes are externally connected to a water supply device, and the molds are cooled by circulating water, which can prevent the molds from overheating, thereby effectively reducing the cooling time of the molds. During long-term production operations, there is no need to stop the operation to cool the molds, thereby greatly improving production efficiency.

[0030] In the zinc ring forming device for ultra-high voltage DC composite insulator hardware of this embodiment, multiple groups of zinc ring casting molds 4 on the workbench 2 can operate at the same time, which can effectively improve production efficiency; when using the hardware zinc ring forming device for production operations, multiple groups of zinc ring casting molds 4 can be operated synchronously or asynchronously. In this embodiment, multiple groups of zinc ring casting molds 4 are divided into two parts, for example, the two groups of molds on the left side of the figure are one part, and the two groups of molds on the right side are one part. The two parts of the molds perform the zinc ring forming operation asynchronously, that is, the actions of the opening and closing cylinders, ejection cylinders and other components corresponding to the two parts of the molds are also asynchronous, and there is no need to perform operations such as workpiece placement and opening and closing mold control at the same time, which reduces the concentration of operations and facilitates operation.

[0031] In an optional embodiment, a plurality of longitudinal guide grooves are arranged on the table surface of the workbench 2, and longitudinal guide grooves are arranged on both sides of each group of zinc ring casting molds 4, so that the two half molds of the mold can move in the corresponding longitudinal guide grooves. Specifically, the bottom of the mold fixing device of the half mold is set to match the longitudinal guide groove, and then the telescopic end of the longitudinal cylinder 5 is connected to the outer side of the half mold, so that the longitudinal cylinders 5 on both sides can be used to drive the two half molds to slide along the longitudinal guide groove to achieve mold opening and closing control. Preferably, a heat insulation guard plate 13 is arranged at the connection between the telescopic end of the longitudinal cylinder 5 and the mold (or mold fixing device), and the heat insulation guard plate 13 is arranged between the cylinder and the mold, so that the heat insulation guard plate 13 is used to insulate the cylinder.

[0032] Optionally, each group of ejection cylinders includes two vertical cylinders 6, and the workbench 2 is provided with two through holes corresponding to each group of zinc ring casting molds 4. The top of the telescopic end of the two vertical cylinders 6 is connected with a heat-insulating rod extending from the through hole, and the heat-insulating rod can move up and down in the through hole driven by the vertical cylinders 6. A hardware clamping piece that matches the hardware is provided at the top of the heat-insulating rod, such as a hardware handrail, which can grasp the hardware inward and can be used to support and fix the hardware when the mold is closed; more importantly, after the zinc ring is cast and formed, the hardware can be supported and fixed when the mold is opened, and the hardware can be ejected upward under the drive of the vertical cylinders 6. Correspondingly, the mold also has a vertical through hole corresponding to the two through holes (which can be composed of two half molds after closing the mold). When the two vertical cylinders 6 are extended and retracted, the heat-insulating rod can be driven to extend and retract along the vertical through hole, so that the heat-insulating rod can be used to insulate and protect the vertical cylinder 6, and there will be no interference between the mold opening and closing and the vertical cylinder 6. Here, the vertical through hole is located at the edge of the mold to avoid affecting the molding cavity inside the mold. The hardware clamp connected to the heat insulating rod extending from the vertical through hole can be determined according to the shape of the hardware, and it only needs to be able to grasp the hardware workpiece 10.

[0033] Optionally, each group of circulating water cooling pipes includes two water cooling branch pipes 9, which respectively pass through the two half molds of a group of zinc ring casting molds 4 to cool down each half mold. Specifically, water cooling grooves that do not affect the overall strength of the molds can be set on the outside of the molding cavities of the two half molds. The water cooling branch pipes 9 are passed through the water cooling grooves, and the molds can be effectively cooled by circulating water. Further, the water cooling mechanism includes two water cooling main pipes 8, which are respectively connected to the circulating water cooling pipes of the left and right parts of the zinc ring casting mold 4. Specifically, the water cooling branch pipes 9 of the left / right parts of the mold are connected in series, such as Figure 5 As shown, the water cooling pipes on both sides of the mold are connected in series and then connected to the water cooling main pipe 8, and the water supply device is connected to the water cooling branch pipes 9 on both sides of the mold through the water cooling main pipe 8.

[0034] In this embodiment, the hardware zinc ring forming device also includes an opening and closing switch assembly and an ejection switch assembly, which are respectively used to control the opening and closing cylinder and the ejection cylinder. The opening and closing switch assembly includes a plurality of opening and closing switches 11, the number of which is consistent with the number of groups of opening and closing cylinders, and each opening and closing switch 11 is electrically connected to the longitudinal cylinders 5 on both sides of a group of opening and closing cylinders, and is used to control the synchronous extension and retraction of the two longitudinal cylinders 5. The ejection switch assembly includes a plurality of ejection switches 12, the number of which is consistent with the number of groups of ejection cylinders, and each ejection switch 12 is electrically connected to the longitudinal cylinders 5 of a group of ejection cylinders, and is used to control the synchronous extension and retraction of the longitudinal cylinders 5. Optionally, one side of the workbench 2 is installed with a side plate 14, and a plurality of opening and closing switches 11 and ejection switches 12 are installed on the side plate 14, and can be specifically installed on the side plate 14 at a position corresponding to the front end of the mold to be controlled, so as to facilitate operation.

[0035] Further, the left and right parts of the multiple zinc ring casting molds 4 correspond to an opening and closing switch 11 respectively, that is, the opening and closing switches 11 corresponding to the molds of the left / right parts are integrated into an opening and closing switch 11, which is used to control the synchronous extension and contraction of the multiple longitudinal cylinders 5 corresponding to the zinc ring casting molds 4 of the left / right parts, for example, the left opening and closing switch 11 shown in the figure is used to control the synchronous extension and contraction of the two longitudinal cylinders 5 on the left. And, the left and right parts of the multiple zinc ring casting molds 4 correspond to an ejection switch 12 respectively, that is, the ejection switches 12 corresponding to the molds of the left / right parts are integrated into an ejection switch 12, which is used to control the synchronous extension and contraction of the multiple ejection cylinders corresponding to the zinc ring casting molds 4 of the left / right parts, for example, the left ejection switch 12 shown in the figure is used to control the synchronous extension and contraction of the two vertical cylinders 6 on the left. The opening and closing cylinders and the ejection cylinders of the molds of the left and right side parts can be controlled separately and uniformly, which is convenient for operation control when asynchronous operations are performed on both sides.

[0036] In actual application scenarios, the cylinder, water cooling mechanism, vibrator 7, switch, mold and other equipment or components in the hardware zinc ring forming device of the embodiment of the present invention can adopt equipment with corresponding functions in the prior art according to the actual working conditions such as the specifications and dimensions of the hardware to be processed and the driving force requirements; the specific shapes and sizes of the workbench 2, bracket 1, mold, guard plate and other components can be designed according to the actual working conditions.

[0037] Furthermore, other devices or components may be arranged in the UHV DC composite insulator hardware zinc ring forming device, or the actual arrangement positions of the devices or components may be adjusted to realize the practical application or other functions of the hardware zinc ring forming device. For example, a power supply component may be included to supply power to other components in the device; for another example, a vibration switch and a water cooling switch may be included to control the start and stop of the vibration mechanism and the water cooling mechanism, respectively.

[0038] The present invention also provides a method for forming a zinc ring of a UHV DC composite insulator hardware. The method uses the above hardware zinc ring forming device (with Figure 1-5 Taking the device shown in the figure as an example, that is, the number of zinc ring forming molds is 4 groups, divided into 2 groups on the left side and 2 groups on the right side), the following steps are included: Step 1: Place the two hardware workpieces 10 into the two sets of molds on the left, start the left opening and closing switch 11 to make the opening and closing cylinder drive the mold to close, start the left vibrator 7 to start vibrating, and pour the zinc liquid at the same time. After the casting is completed, stop the left vibrator 7; Step 2: Put the two metal fittings 10 into the two sets of molds on the right side, start the right opening and closing switch 11 to make the opening and closing cylinder drive the mold to close the mold, start the right vibrator 7 to vibrate, and pour the zinc liquid at the same time. After the casting is completed, stop the right vibrator 7; Step 3: After the zinc ring of the left workpiece 10 is solidified, the left opening and closing switch 11 is started to make the opening and closing cylinder drive the mold to open the mold, and the left ejection switch 12 is started to make the ejection cylinder eject the left workpiece 10, and the ejection cylinder is reset after the workpiece 10 is taken out; Step 4: After the zinc ring of the right workpiece 10 is solidified, the right opening and closing switch 11 is started to make the opening and closing cylinder drive the mold to open the mold, and the right ejection switch 12 is started to make the ejection cylinder eject the right workpiece 10. After the workpiece 10 is taken out, the ejection cylinder is reset.

[0039] After step 3 is completed, the workpiece is changed and steps 1 and 3 are repeated in a cycle; after step 4 is completed, the workpiece is changed and steps 2 and 4 are repeated in a cycle; during the execution of the above steps, the water cooling mechanism is kept started to cool down in real time.

[0040] According to an exemplary embodiment of the present invention, the zinc ring forming device for ultra-high voltage direct current composite insulator hardware is used to cyclically execute the above steps to efficiently perform the zinc ring forming operation and ensure the quality of the zinc ring. The ultra-high voltage direct current composite insulator hardware workpiece to be processed can be as follows: Figure 6 The workpiece shown may also be other types of workpieces. By designing the mold and adjusting the cylinder position according to the type and specification of the workpiece, the above-mentioned hardware zinc ring forming device and method can be implemented to carry out hardware zinc ring forming production operations with high efficiency and high quality.

[0041] It should be pointed out that, according to the needs of implementation, the various components / steps described in the embodiments of the present invention may be split into more components / steps, or two or more components / steps or parts of components / steps may be combined into new components / steps to achieve the purpose of the embodiments of the present invention.

[0042] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A zinc ring forming device for ultra-high voltage DC composite insulator hardware, characterized in that: It includes a workbench, a mold assembly, an opening and closing mechanism, an ejection mechanism, a vibration mechanism, and a water cooling mechanism, among which: The mold assembly comprises a plurality of groups of zinc ring casting molds arranged transversely on a workbench, wherein the zinc ring casting molds have a forming cavity matching a portion of a metal workpiece where the zinc ring is to be cast; The opening and closing mechanism includes multiple groups of opening and closing cylinders, each group of opening and closing cylinders includes two longitudinal cylinders, which are respectively arranged on both sides of the workbench in the longitudinal direction and the telescopic ends are connected to the outer sides of the two half molds of a set of zinc ring casting molds, and are used to drive the molds to open and close longitudinally; The ejection mechanism includes multiple groups of ejection cylinders, each group of ejection cylinders includes at least one vertical cylinder, which are respectively arranged under the workbench corresponding to multiple sets of zinc ring casting molds, and are used to eject the cast workpiece upwards; The vibration mechanism includes two vibrators, which are respectively arranged at two ends of the workbench in the horizontal direction; The water cooling mechanism comprises a plurality of groups of circulating water cooling pipes, which are respectively used to cool a plurality of groups of zinc ring casting moulds.

2. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: The table top of the workbench is provided with longitudinal guide grooves on both sides of each group of zinc ring casting molds, and the two half molds of each group of zinc ring casting molds can slide along the longitudinal guide grooves on both sides respectively, and can be opened and closed under the drive of the longitudinal cylinders on both sides.

3. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: Each group of ejection cylinders includes two vertical cylinders. The workbench has two through holes corresponding to each group of zinc ring casting molds. The tops of the telescopic ends of the two vertical cylinders are connected with insulation rods extending from the through holes. The insulation rods can move up and down in the through holes driven by the vertical cylinders.

4. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 3 is characterized in that: The top end of the heat insulation rod is connected with a hardware clamp.

5. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: Each group of circulating water cooling pipes includes two water cooling branches, which respectively pass through two half molds of a group of zinc ring casting molds.

6. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: The water cooling mechanism also includes two water cooling main pipes, and the circulating water cooling pipes corresponding to the left and right parts of the zinc ring casting mold are respectively connected in series and then connected to one water cooling main pipe.

7. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: Also included is a workbench bracket, on which the workbench is mounted via a plurality of supporting columns.

8. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: It also includes an opening and closing switch assembly and / or an ejection switch assembly. The opening and closing switch assembly includes multiple opening and closing switches, which are respectively used for the extension and retraction of each group of longitudinal cylinders; the ejection switch assembly includes multiple ejection switches, which are respectively used to control the extension and retraction of each group of ejection cylinders.

9. The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to claim 1, characterized in that: The left and right parts of multiple sets of zinc ring casting molds respectively correspond to an opening and closing switch, which is used to control the synchronous extension and retraction of multiple sets of longitudinal cylinders corresponding to the left and right parts of the zinc ring casting molds; the left and right parts of multiple sets of zinc ring casting molds respectively correspond to an ejection switch, which is used to control the synchronous extension and retraction of multiple sets of ejection cylinders corresponding to the left and right parts of the zinc ring casting molds.

10. A method for forming a zinc ring of a UHV DC composite insulator hardware, characterized in that: The zinc ring forming device for ultra-high voltage direct current composite insulator hardware according to any one of claims 1 to 9 comprises: Step 1: Place the hardware workpiece into the left part of the mold, start the left opening and closing switch to make the opening and closing cylinder drive the mold to close, start the left vibrator to vibrate, and pour the zinc liquid at the same time. After the casting is completed, stop the left vibrator; Step 2: Place the hardware workpiece into the right part of the mold, start the right opening and closing switch to make the opening and closing cylinder drive the mold to close, start the right vibrator to vibrate, and pour the zinc liquid at the same time. After the casting is completed, stop the right vibrator; Step 3: After the zinc ring of the left workpiece solidifies, start the left opening and closing switch to make the opening and closing cylinder drive the mold to open the mold, start the left ejection switch to make the ejection cylinder eject the left workpiece, and reset the ejection cylinder after taking out the workpiece; repeat steps 1 and 3 when changing the workpiece; Step 4: After the zinc ring of the right workpiece solidifies, start the right opening and closing switch to make the opening and closing cylinder drive the mold to open the mold, start the right ejection switch to make the ejection cylinder eject the right workpiece, and reset the ejection cylinder after taking out the workpiece; change the workpiece and repeat steps 2 and 4.

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