Composite insulator umbrella skirt vulcanization forming device
By designing a composite insulator shed vulcanization molding device with automatic demoulding and loading and unloading, the problem of large equipment footprint is solved, processing efficiency and space utilization are improved, and costs are reduced.
Patent Information
- Application Number
- CN202511316170.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2045-09-16
AI Technical Summary
The existing vulcanizing molding equipment has a large track frame that cannot be effectively stored, resulting in excessive equipment footprint and increased operating costs.
A vulcanization molding device for composite insulator skirts was designed. Through the combination of components such as base, upper mold base, lower mold base, wing plate and guide rail, automatic demolding, feeding and unloading are realized, reducing manual operation. The material rack can be stored in the receiving cavity.
It improves the efficiency of insulator processing, reduces the equipment footprint and cost, enhances space utilization, and reduces the volume of equipment when idle.
Smart Images

Figure CN120816674A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of insulator molding, and in particular to a composite insulator shed vulcanization molding device. Background Art
[0002] Composite insulators are commonly used insulating devices in power transmission and transformation projects. Their core structure includes a core rod that bears mechanical loads and a shed that provides insulation, weather resistance, and anti-fouling functions. Vulcanization molding is the key process for combining silicone rubber sheds and core rods to form insulators. In injection vulcanization, the rubber compound is plasticized by the injection molding machine screw and then injected into the closed mold cavity under high pressure. At the same time, the mold is heated, and the rubber compound quickly fills the cavity and completes vulcanization.
[0003] Most existing vulcanization molding equipment lacks inherent loading and unloading capabilities. To facilitate loading and unloading, a track frame is typically installed outside the equipment. This track frame feeds core rods between the upper and lower molds of the vulcanization molding equipment and then removes them after the insulators are vulcanized and formed, thus enabling loading and unloading of the insulators. However, the track frame itself is large and bulky, making it difficult to store them properly. While facilitating loading and unloading, it also increases the overall footprint of the equipment, resulting in excessive space usage. This, especially when the equipment is idle, results in significant waste of space resources and increases equipment operating costs. Summary of the Invention
[0004] The present invention provides a composite insulator shed vulcanization molding device, which aims to solve the problem in the related art that the track frame itself is large in length and volume and cannot be well stored. While facilitating the loading and unloading of the equipment, it also increases the overall footprint of the equipment.
[0005] The composite insulator shed vulcanization molding device of the present invention includes a base, an upper die base and a lower die base are provided on the base, and the lower die base can be raised and lowered on the base. A plate body is provided inside the lower die base, and a wing plate is provided on the plate body. The wing plate can be lowered relative to the plate body when the lower die base approaches the upper die base, and can be raised relative to the plate body when the lower die base moves away from the upper die base. A guide rail is provided inside the lower die base, and two pillars located inside the lower die base are provided at the bottom of the plate body, and the bottom ends of the pillars are provided on the guide rails, which can slide along the guide rails and rotate when moving to the end of the guide rails. A ring sleeve is provided on one side of the pillar, and the ring sleeve can slide inside the lower die base after the lower die base is lowered to a certain height, pushing the pillar to slide along the guide rail, and a connecting rod located on one side of the guide rail is provided between the two pillars.
[0006] Preferably, the top of the lower die base is provided with an accommodating cavity and a communicating groove which are interconnected. The accommodating cavity is opened along the length direction of the lower die base, and the plate body and the pillar are both located in the accommodating cavity.
[0007] Preferably, the plate body is fixedly mounted with a frame body, the wing plate is located directly above the communicating groove and is slidably assembled in the frame body, and a slot located directly above the frame body is provided at the bottom of the upper mold base.
[0008] Preferably, a base is provided at the bottom end of the frame, a guide shaft is rotatably mounted inside the base, and the top end of the guide shaft is rotatably mounted on the top end of the frame, the wing plate is sleeved on the outside of the guide shaft, and a torsion spring is provided between the guide shaft and the base.
[0009] Preferably, a spiral groove is formed on the outside of the guide shaft, and a protrusion extending into the spiral groove is fixedly mounted on the wing plate.
[0010] Preferably, the two pillars are composed of a barrel and a cylinder. The cylinder is arranged inside the barrel, and its telescopic end is rotatably assembled with a rotating seat fixed to the bottom of the plate body. The barrels of the two pillars are rotatably assembled at both ends of the connecting rod respectively.
[0011] Preferably, a circular groove and a transverse groove are provided in the guide rail, and there are three transverse grooves distributed equidistantly, respectively provided at both ends and the middle of the circular groove. Guide blocks are fixedly installed on the end sides of the two cylinders, and the guide blocks are square blocks, and their shape and size are adapted to the circular groove and the transverse groove. The guide blocks on the two cylinders are respectively located in two adjacent transverse grooves, and can rotate in the transverse grooves. After the guide blocks rotate to be parallel to the circular groove, they can slide into the circular groove.
[0012] Preferably, a drive groove is provided on the side wall of the accommodating cavity along its length direction, a drive shaft is rotatably assembled inside the drive groove, and a spiral guide groove is provided on the outside of the drive shaft, a ring sleeve is arranged outside the drive shaft and slidably assembled in the guide groove, a push rod is fixedly mounted on the ring sleeve, a sliding groove is provided on the side wall of the cylinder along its length direction, and the end of the push rod away from the ring sleeve is slidably assembled in the sliding groove.
[0013] Preferably, a transmission gear is coaxially fixed to the end of the drive shaft, and a transmission rack is vertically fixed on the base, which can engage with the transmission gear when it descends.
[0014] Preferably, a guide rod is vertically fixed on the base, a hydraulic column is provided in the middle of the base, the lower die base is fixedly mounted on the top of the hydraulic column, a sliding sleeve is fixedly mounted on the side wall of the lower die base, and the sliding sleeve is slidably assembled on the outside of the guide rod.
[0015] Beneficial effects: When the present invention is in use, the demolding process of the insulator is automatically completed when the forming frame is separated by lifting the wing plate, and the formed insulator is automatically sent out from between the upper mold base and the lower mold base by adjusting the material rack when the lower mold base is lowered, so that the insulator is better unloaded and the trouble of manual handling is saved. When the lower mold base is lifted, the new insulator core rod is automatically sent between the upper mold base and the lower mold base to facilitate the vulcanization molding operation of a new round of insulator umbrella skirts, and the insulator core rod is better loaded, thereby improving the insulator processing efficiency, ensuring that the equipment can be loaded and unloaded conveniently, and the material rack enters the accommodating cavity to complete the storage, thereby improving the space utilization rate inside the equipment, reducing the floor space of the equipment, and effectively reducing the equipment cost, especially when the equipment is idle, it can better reduce the equipment volume. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a perspective view of the present invention.
[0017] Figure 2 It is a side view of the present invention.
[0018] Figure 3 It is a cross-sectional view of the forming frame of the present invention.
[0019] Figure 4 It is a three-dimensional diagram of the lower die base of the present invention.
[0020] Figure 5 It is a three-dimensional view of a material rack of the present invention.
[0021] Figure 6 It is a perspective view of the wing panel of the present invention.
[0022] Figure 7 It is a structural schematic diagram of the driving assembly in the lower die base of the present invention.
[0023] Figure 8 It is a cross-sectional view of the base of the present invention.
[0024] Reference numerals: 10. Base; 11. Guide rod; 12. Hydraulic column; 20. Forming frame; 21. Upper die base; 211. Slot; 22. Lower die base; 221. Sliding sleeve; 222. Accommodating cavity; 223. Connecting groove; 224. Drive groove; 30. Material rack; 31. Plate; 32. Frame; 33. Wing plate; 331. Bump; 40. Demolding assembly; 41. Base; 42. Guide shaft; 421. Spiral groove; 43. Torsion spring; 50. Flip assembly; 51. Pillar; 511. Cylinder; 512. Cylinder; 513. Slide; 52. Rotating seat; 53. Connecting rod; 60. Guide assembly; 61. Guide rail; 611. Circular groove; 612. Horizontal groove; 62. Guide block; 70. Drive assembly; 71. Drive shaft; 711. Guide groove; 72. Ring sleeve; 73. Push rod; 80. Transmission assembly; 81. Transmission gear; 82. Transmission rack. DETAILED DESCRIPTION
[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0026] like Figures 1 to 8 As shown, the composite insulator shed vulcanization molding device of the present invention includes a base 10, a forming frame 20, a material frame 30, a demoulding assembly 40, a flipping assembly 50, a guide assembly 60, a driving assembly 70 and a transmission assembly 80. The forming frame 20 is arranged on the base 10 and can be opened and closed for vulcanization molding of the insulator shed. The material frame 30 is arranged in the forming frame 20 and is used to support the insulator core rod. The demoulding assembly 40 is arranged on the material frame 30 and can demould the insulator after the forming frame 20 is opened. The flipping assembly 50, the guide assembly 60 and the driving assembly 70 are all located in the forming frame 20. The transmission assembly 80 is arranged outside the forming frame 20 and can drive the driving assembly 70 to operate when the forming frame 20 is opened and closed, so that the flipping assembly 50 operates along the guide assembly 60 to send the material frame 30 into or out of the forming frame 20 for loading and unloading.
[0027] refer to Figure 1 and Figure 2 A guide rod 11 is vertically fixed on the base 10, and a hydraulic column 12 is provided in the middle of the base 10.
[0028] refer to Figure 1 and Figure 2The forming frame 20 is composed of an upper die base 21 and a lower die base 22. The upper die base 21 and the lower die base 22 are arranged above the base 10 relative to each other, and are used for the installation of the upper template and the lower template respectively. The upper die base 21 is fixedly mounted on the top of the guide rod 11, and the lower die base 22 is fixedly mounted on the top of the hydraulic column 12. It can be lifted under the push of the hydraulic column 12 and attached to the upper die base 21 from the bottom to close the upper template and the lower template. A sliding sleeve 221 is fixedly mounted on the side wall of the lower die base 22, and the sliding sleeve 221 is slidably assembled on the outside of the guide rod 11, so that the guide rod 11 can limit and guide the lower die base 22.
[0029] refer to Figure 3 、 Figure 4 as well as Figure 7 The top of the lower mold base 22 is provided with an accommodating cavity 222 and a communicating groove 223 that are interconnected. The accommodating cavity 222 is opened along the length direction of the lower mold base 22. There are two communicating grooves 223 located at both ends of the lower mold base 22. A driving groove 224 is opened on the side wall of the accommodating cavity 222 along its length direction for installing the driving assembly 70.
[0030] refer to Figure 3 as well as Figure 5 The material rack 30 includes a plate body 31, a frame body 32 and a wing plate 33. The plate body 31 is arranged inside the accommodating cavity 222. The frame body 32 has two symmetrically fixed at both ends of the plate body 31. The wing plate 33 is located directly above the communicating groove 223 and is slidably arranged in the frame body 32 for supporting the insulator core rod. The wing plate 33 can slide up and down in the frame body 32 and enter the communicating groove 223 during the downward movement, so that the insulator core rod enters the upper mold plate and the lower mold plate, and then the insulator umbrella skirt is injected and vulcanized. The bottom of the upper mold base 21 is provided with a slot 211 located directly above the frame body 32, so that the frame body 32 can be inserted into the slot 211 after the upper mold base 21 and the lower mold base 22 are merged.
[0031] refer to Figure 3 as well as Figure 8The demoulding assembly 40 includes a base 41, a guide shaft 42 and a torsion spring 43. The base 41 is arranged at the bottom end of the frame 32. The guide shaft 42 is rotatably assembled inside the base 41, and the top end of the guide shaft 42 is rotatably assembled at the top end of the frame 32. The wing plate 33 is sleeved on the outside of the guide shaft 42. When sliding in the frame 32, it drives the guide shaft 42 to rotate, and can also slide in the frame 32 as the guide shaft 42 rotates. The torsion spring 43 is arranged between the guide shaft 42 and the base 41, so that When the upper mold base 21 and the lower mold base 22 are closed to close the upper mold base and the lower mold base, the frame 32 is inserted into the slot 211, and the upper mold base 21 presses the wing plate 33 to descend in the frame 32, and then drives the guide shaft 42 to rotate to store energy in the torsion spring 43. When the upper mold base and the lower mold base are opened, as the lower mold base 22 moves away from the upper mold base 21, the wing plate 33 gradually loses its force, and the torsion spring 43 drives the guide shaft 42 to rotate and reset, driving the wing plate 33 to rise in the frame 32, and automatically demolding the insulator.
[0032] A spiral groove 421 is formed on the outside of the guide shaft 42, and a protrusion 331 extending into the spiral groove 421 is fixedly mounted on the wing plate 33. When the wing plate 33 descends, the protrusion 331 slides along the spiral groove 421, thereby pushing the guide shaft 42 to rotate. When the guide shaft 42 rotates and resets, the spiral groove 421 pushes the protrusion 331 to lift and reset the wing plate 33, thereby facilitating the demolding operation of the insulator.
[0033] refer to Figure 3 and Figure 5 The flip assembly 50 includes a pillar 51, a rotating seat 52 and a connecting rod 53. Two pillars 51 are arranged in the accommodating cavity 222 and can rotate and slide in the accommodating cavity 222. The rotating seat 52 is rotatably set at the top of the pillar 51 and is fixed to the plate body 31. The connecting rod 53 is set between the two pillars 51 to limit the distance between the two pillars 51, so that the two pillars 51 can drive the plate body 31 to rise and fall and move when rotating and sliding in the accommodating cavity 222.
[0034] Both pillars 51 are composed of a cylinder 511 and a cylinder 512. The bottom end of the cylinder 511 is rotatably assembled on the end of the connecting rod 53. The cylinder 512 is arranged inside the cylinder 511, and its telescopic end is rotatably connected to the rotating seat 52, so that the support distance of the pillar 51 to the plate body 31 can be adjusted by the telescopic movement of the cylinder 512, so as to better remove the plate body 31 and the insulator from the forming frame 20.
[0035] refer to Figure 3 as well as Figure 7The guide assembly 60 includes a guide rail 61 and a guide block 62. The guide rail 61 is horizontally arranged in the lower mold base 22 on one side of the connecting rod 53 and is connected to the accommodating cavity 222. The guide block 62 is fixedly installed on the end side of the cylinder 511, and its end away from the cylinder 511 is arranged in the guide rail 61. It can slide along the guide rail 61 and rotate after moving to a certain position.
[0036] A circular groove 611 and a transverse groove 612 are provided in the guide rail 61. There are three equally spaced transverse grooves 612, which are respectively provided at both ends and the middle of the circular groove 611. The guide block 62 is a square block, and its shape and size are adapted to the circular groove 611 and the transverse groove 612. The guide blocks 62 on the two cylinders 511 are respectively located in two adjacent transverse grooves 612, and can rotate in the transverse groove 612. After the guide block 62 rotates to be parallel to the circular groove 611, it can slide into the circular groove 611, slide laterally along it until it enters the adjacent circular groove 611, and can rotate again.
[0037] refer to Figure 3 and Figure 7 The driving assembly 70 includes a driving shaft 71, a sleeve 72 and a push rod 73. The driving shaft 71 is rotatably assembled inside the driving groove 224, and a spiral guide groove 711 is opened on the outside of the driving shaft 71. The sleeve 72 is sleeved on the outside of the driving shaft 71 and slidably assembled in the guide groove 711. The push rod 73 is fixed to the outer wall of the sleeve 72. A sliding groove 513 is opened on the side wall of the cylinder 511 along its length direction, and the end of the push rod 73 away from the sleeve 72 is slidably assembled in the sliding groove 513, so that when the driving shaft 71 rotates, the sleeve 72 is pushed to move in the driving groove 224 through the guide groove 711, and the cylinder 511 is pushed by the push rod 73 to move. After the guide block 62 enters the transverse groove 612 of the guide rail 61, the push rod 73 slides in the sliding groove 513, pushing the cylinder 511 to rotate.
[0038] refer to Figure 1 、 Figure 2 as well as Figure 7 The transmission assembly 80 includes a transmission gear 81 and a transmission rack 82. The transmission gear 81 is located on the side of the lower mold base 22 and is coaxially fixed to the end of the drive shaft 71. The transmission rack 82 is vertically fixed on the base 10 and can engage with the transmission gear 81 when the lower mold base 22 descends, thereby pushing the transmission gear 81 to rotate.
[0039] Working principle: The wing plate 33 supports both ends of the insulator core rod, and the hydraulic column 12 pushes the lower mold base 22 to lift it and merge it with the upper mold base 21. When the frame 32 is inserted into the slot 211 in the upper mold base 21 during the rise, the upper mold base 21 will block the wing plate 33, causing the wing plate 33 to descend in the frame 32 and eventually enter the connecting groove 223, so that the insulator core rod enters between the merged upper and lower mold plates to perform vulcanization molding of the insulator umbrella skirt. When the wing plate 33 descends in the frame 32, the protrusion 331 slides in the spiral groove 421 to push the guide shaft 42 to rotate, so that the torsion spring 43 stores energy.
[0040] The lower die base 22 is lowered and separated from the upper die base 21 to open the mold. The wing plate 33 loses the obstruction of the upper die base 21, and the torsion spring 43 drives the guide shaft 42 to rotate, pushing the wing plate 33 to rise in the frame 32, pushing the insulator out of the lower template, and then the transmission rack 82 is engaged with the transmission gear 81 that follows the lower die base 22 to descend, pushing the transmission gear 81 to drive the drive shaft 71 to rotate, and the guide groove 711 pushes the ring sleeve 72 to move in the drive groove 224, and the push rod 73 pushes the cylinder 511 to make the guide block 62 rotate in the circular groove 611 of the guide rail 61, so that the plate body 31 moves with the formed insulator. When the guide block 62 rotates to be parallel to the circular groove 611, Pushed by the push rod 73, it slides down into the circular groove 611, slides laterally along it, and drives the plate body 31 and the insulator to move laterally synchronously. When the guide block 62 enters the adjacent transverse groove 612, the support 51 stops moving and continues to rotate under the push of the push rod 73. With the extension of the cylinder 512, the plate body 31 is pushed to continue to move forward, and finally the insulator is sent out from between the upper die base 21 and the lower die base 22, and the insulator can be cut. When the lower die base 22 is lifted, the transmission gear 81 rotates in the opposite direction, so that the plate body 31 can be reset to enter the accommodating cavity 222, and the new insulator core rod is sent into the forming frame 20 for processing the next group of insulators.
[0041] In the present invention, by lifting the wing plate 33, the demoulding process of the insulator is automatically completed when the forming frame 20 is separated, and by adjusting the material rack 30, when the lower mold base 22 is lowered, the formed insulator is automatically sent out from between the upper mold base 21 and the lower mold base 22, so that the insulator can be unloaded better and the trouble of manual handling is eliminated. When the lower mold base 22 is lifted, the new insulator core rod is automatically sent between the upper mold base 21 and the lower mold base 22 to facilitate the vulcanization molding operation of a new round of insulator umbrella skirts, and the insulator core rod is better loaded, thereby improving the insulator processing efficiency and ensuring that the equipment can be loaded and unloaded conveniently. At the same time, the material rack 30 enters the accommodating cavity 222 to complete the storage, thereby improving the integrated control effect between the components, improving the space utilization rate inside the equipment, reducing the equipment's footprint, and effectively reducing the equipment cost, especially when the equipment is idle, it can better reduce the equipment volume.
[0042] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A composite insulator shed vulcanization molding device, comprising a base (10), an upper die base (21) and a lower die base (22) being provided on the base (10), and the lower die base (22) being capable of being raised and lowered on the base (10), characterized in that: A plate body (31) is provided inside the lower die base (22), and a wing plate (33) is provided on the plate body (31), which can descend relative to the plate body (31) when the lower die base (22) approaches the upper die base (21), and can rise relative to the plate body (31) when the lower die base (22) moves away from the upper die base (21); A guide rail (61) is provided inside the lower die base (22), two pillars (51) located inside the lower die base (22) are provided at the bottom of the plate body (31), and the bottom ends of the pillars (51) are provided on the guide rail (61) and can slide along the guide rail (61) and rotate when moving to the end of the guide rail (61), a ring sleeve (72) is provided on one side of the pillar (51), and the ring sleeve (72) can slide inside the lower die base (22) after the lower die base (22) is lowered to a certain height, pushing the pillar (51) to slide along the guide rail (61), and a connecting rod (53) located on one side of the guide rail (61) is provided between the two pillars (51).
2. The composite insulator shed vulcanization molding device according to claim 1, characterized in that: The top of the lower die base (22) is provided with a mutually communicating accommodation cavity (222) and a communicating groove (223). The accommodation cavity (222) is opened along the length direction of the lower die base (22). The plate body (31) and the pillar (51) are both located in the accommodation cavity (222).
3. The composite insulator shed vulcanization molding device according to claim 2, characterized in that: The plate body (31) is fixedly mounted with a frame body (32), the wing plate (33) is located directly above the connecting groove (223) and is slidably assembled in the frame body (32), and a slot (211) located directly above the frame body (32) is provided at the bottom of the upper die base (21).
4. The composite insulator shed vulcanization molding device according to claim 3, characterized in that: The bottom end of the frame (32) is provided with a base (41), the interior of the base (41) is rotatably assembled with a guide shaft (42), and the top end of the guide shaft (42) is rotatably assembled on the top end of the frame (32), the wing plate (33) is sleeved on the outside of the guide shaft (42), and a torsion spring (43) is provided between the guide shaft (42) and the base (41).
5. The composite insulator shed vulcanization molding device according to claim 4, characterized in that: A spiral groove (421) is formed on the outside of the guide shaft (42), and a protrusion (331) extending into the spiral groove (421) is fixedly mounted on the wing plate (33).
6. The composite insulator shed vulcanization molding device according to claim 1, characterized in that: The two pillars (51) are composed of a cylinder (511) and a cylinder (512). The cylinder (512) is arranged inside the cylinder (511). The telescopic end of the cylinder (512) is rotatably assembled with a rotating seat (52) fixed to the bottom of the plate (31). The cylinders (511) of the two pillars (51) are rotatably assembled at the two ends of the connecting rod (53).
7. The composite insulator shed vulcanization molding device according to claim 6, characterized in that: The guide rail (61) is provided with a circular groove (611) and a transverse groove (612). The transverse grooves (612) are distributed in three equal intervals and are respectively provided at both ends and the middle of the circular groove (611). The end sides of the two cylinders (511) are fixedly mounted with guide blocks (62). The guide blocks (62) are square blocks, and their shape and size are adapted to the circular groove (611) and the transverse groove (612). The guide blocks (62) on the two cylinders (511) are respectively located in two adjacent transverse grooves (612) and can rotate in the transverse grooves (612). After the guide blocks (62) rotate to be parallel to the circular groove (611), they can slide into the circular groove (611).
8. The composite insulator shed vulcanization molding device according to claim 2, characterized in that: A driving groove (224) is provided on the side wall of the accommodating cavity (222) along its length direction, a driving shaft (71) is rotatably mounted inside the driving groove (224), and a spiral guide groove (711) is provided on the outside of the driving shaft (71), a ring sleeve (72) is sleeved outside the driving shaft (71) and slidably mounted in the guide groove (711), a push rod (73) is fixedly mounted on the ring sleeve (72), a sliding groove (513) is provided on the side wall of the cylinder (511) along its length direction, and an end of the push rod (73) away from the ring sleeve (72) is slidably mounted in the sliding groove (513).
9. The composite insulator shed vulcanization molding device according to claim 8, characterized in that: A transmission gear (81) is coaxially fixed to the end of the drive shaft (71), and a transmission rack (82) is vertically fixed on the base (10) and can mesh with the transmission gear (81) when it descends.
10. The composite insulator shed vulcanization molding device according to claim 1, characterized in that: A guide rod (11) is vertically fixed on the base (10), a hydraulic column (12) is provided in the middle of the base (10), a lower die base (22) is fixedly mounted on the top of the hydraulic column (12), a sliding sleeve (221) is fixedly mounted on the side wall of the lower die base (22), and the sliding sleeve (221) is slidably assembled on the outside of the guide rod (11).
Citation Information
Patent Citations
Production equipment and process for ultra-high-voltage composite insulator
CN111391226A
Demolding system for injection of composite insulator
CN112238577A
Upper cylinder type pillar composite insulator vulcanization forming machine
CN118866488A
Insulator production system
CN119446685A
Mold with de -molding mechanism
CN205951163U
Cited By
An insulator forming device
CN122575892A
