A device for shaping and molding the inner cavity of a large-size insulator

Abstract

This invention relates to the field of insulator processing equipment technology, specifically disclosing an inner cavity trimming and forming device for large-size insulators. The device includes a frame and an inner cavity trimming mechanism. The frame houses a clamping mechanism for fixing and unlocking the ends of the insulators. Multiple grinding devices are arranged between the two clamping mechanisms. Each grinding device includes a mounting frame, a rotating roller rotatably mounted on the mounting frame, a grinding belt wound around the rotating roller for grinding the outer surfaces of the two insulators, and multiple grinding plates mounted on the mounting frame. These grinding plates abut against the adjacent sides of the skirts of two adjacent insulators, grinding these adjacent sides. A rotating device is mounted on the frame to drive the clamping mechanism. This inner cavity trimming and forming device for large-size insulators improves the overall processing efficiency of insulators.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulator processing equipment, in particular to an inner cavity blank finishing forming device for large-size insulators. BACKGROUND

[0002] Insulators are devices installed between conductors of different potentials or between conductors and ground potential components, capable of withstanding voltage and mechanical stress.

[0003] Insulators are a special kind of insulation control, which can play an important role in overhead transmission lines, and are composed of two parts: insulation and connecting hardware. In the early years, insulators were mainly used on telegraph poles, and gradually developed to the end of high-voltage line connection towers, with many disc-shaped insulators hanging on them to increase the creepage distance, usually made of glass or porcelain, which is called insulator. Insulators can be divided into suspension insulators and post insulators according to different installation methods, and can be divided into porcelain insulators, glass insulators and composite insulators (also known as synthetic insulators) according to different insulating materials, and can be divided into low-voltage insulators and high-voltage insulators according to different voltage levels.

[0004] During the processing of insulators, the inner cavity and the outer surface of the insulator usually need to be trimmed so that the processed insulator can become a qualified insulator blank. The blank finishing is to use special tools or equipment to cut, scrape and polish the inner cavity surface of the mud section, so that it meets the following requirements: (1) accurate size: the diameter, depth and taper required by the design drawing; (2) smooth surface: eliminate the spiral threads of extrusion, make the inner wall smooth and flat, and reduce micro defects; (3) dense structure: through cutting pressure, the inner surface layer of mud is more compact, and the strength is improved.

[0005] The Chinese patent application file with publication number CN117936204A discloses an inner cavity blank finishing forming device for large-size insulators, which includes an operating table, a circular pipe is arranged above the operating table, a square box is fixedly connected to the bottom of the circular pipe, the square box and the circular pipe are distributed in an L shape, a first partition strip is fixedly connected inside the square box, the first partition strip separates the inside of the square box into a first suction cavity and a first air supply cavity, a sliding box is slidably connected inside the first suction cavity, a sliding block is slidably connected inside the first air supply cavity, one end of the sliding box outside the first suction cavity is communicated with an arc box, the sliding block is fixedly connected to the arc box, a polishing belt is fixedly connected to the side of the arc box away from the sliding box, a second partition strip is fixedly connected inside the circular pipe, the first partition strip and the second partition strip are fixedly connected, the second partition strip separates the inside of the circular pipe into a second suction cavity and a second air supply cavity, the second suction cavity is communicated with the first suction cavity, the second air supply cavity is communicated with the first air supply cavity, a support plate is rotatably connected to the top of the circular pipe, and a communication assembly cooperating with the circular pipe is arranged on the support plate.

[0006] When trimming, the first motor rotates to drive the threaded rod to rotate, since the support plate is provided with a threaded hole matched with the threaded rod, the up-down movement of the support plate is controlled, so that the square box, polishing belt and other structures move up and down synchronously, and the trimming forming operation of the inner cavity of the entire porcelain insulator green body is completed.

[0007] In the above technology, after the trimming of the insulator is completed, the processed insulator needs to be installed to the outer surface trimming device for trimming, which leads to low overall processing efficiency of the insulator. SUMMARY

[0008] The present application provides an inner cavity trimming forming device for large-size insulators, aiming at solving the technical problem in the prior art that after the trimming of the insulator is completed, the processed insulator needs to be installed to the outer surface trimming device for trimming, which leads to low overall processing efficiency of the insulator.

[0009] The inner cavity trimming forming device for large-size insulators, comprising a rack and an inner cavity trimming mechanism arranged in the rack, the rack is provided with two groups of clamping mechanisms for fixing and clamping the end of the insulator and unlocking, a plurality of polishing devices are arranged between the two groups of clamping mechanisms, the polishing device comprises a mounting frame arranged on the rack, a rotating roller rotatably arranged on the mounting frame, a polishing belt wound on the rotating roller and used for polishing the outer surface of the two insulators, and a plurality of polishing plates arranged on the mounting frame, the plurality of polishing plates are respectively abutted on the mutually close sides of the umbrella skirts of the adjacent two insulators and used for polishing the mutually close sides of the umbrella skirts of the adjacent two insulators, and the rack is provided with a rotating device for driving the clamping mechanism to rotate.

[0010] Beneficial effects: through the arrangement of the polishing device, when the insulator is trimmed in the inner cavity, the clamping mechanism is driven to rotate by the rotating device, the insulator can be driven to rotate, the outer surface of the insulator is polished by the polishing belt, and the mutually close sides of the umbrella skirts of the adjacent two insulators are polished by the polishing plates, efficient polishing of the insulator is realized, the overall processing efficiency of the insulator is improved, and the processing quality of the insulator is improved by polishing the multiple places of the insulator, the polishing pressure of different positions of the insulator is ensured to be the same by synchronous polishing of the polishing belt and the polishing plate, and the processing quality of the insulator is improved.

[0011] Preferably, a plurality of tensioning devices are arranged on the mounting frame, the tensioning device comprises a tensioning seat slidingly fitted in the vertical direction on the mounting frame and an elastic member one arranged between the tensioning seat and the mounting frame, the rotating roller is rotatably fitted on the tensioning seat, and the elastic member one is used to drive the tensioning seat to slide in the direction away from the insulator.

[0012] Beneficial effects: through the setting of the tensioning device, the elastic member I drives the tensioning seat to move, and the rotating roller is driven to slide and adjust through the tensioning seat, so that the polishing belt is more compactly attached to the insulator, and the polishing efficiency of the insulator is improved.

[0013] Preferably, a sliding groove is formed in the mounting frame, the polishing plates are slidingly fitted in the sliding groove along the length direction of the rack, and two polishing plates between the abutting sides of the umbrella skirts of the adjacent two insulators are provided with an elastic member II, both ends of the elastic member II are connected with the two polishing plates, and the elastic member II is used to push the two polishing plates to slide in the direction away from each other.

[0014] Preferably, the sliding groove is inclinedly arranged towards the insulator in the direction away from the inner cavity.

[0015] Beneficial effects: through the inclined arrangement of the sliding groove, the elastic member II can push the polishing plates to move along the sliding groove, and push the two polishing plates to slide in the direction away from each other, so that the polishing plates can be better attached to the connection between the umbrella skirt and the insulator, and the polishing effect of the connection between the umbrella skirt and the insulator is improved.

[0016] Preferably, the mounting frame is slidingly fitted in the rack along the length direction of the rack, and the rack is provided with an adjusting device for driving the mounting frame to slide and adjust.

[0017] Beneficial effects: through the setting of the adjusting device, the mounting frame can be driven to slide and adjust, so that the polishing area of the polishing belt can be increased, the insulators of different sizes can be conveniently polished, and the application range of the device is improved.

[0018] Preferably, the adjusting device comprises a screw rod I rotatingly fitted in the rack and a driving member I connected with the screw rod I and used to drive the screw rod I to rotate, and the screw rod I is in threaded cooperation with the mounting frame.

[0019] Preferably, the mounting frame comprises a sliding part slidingly fitted in the rack and an adjusting part slidingly fitted in the sliding part along the width direction of the rack, and the sliding part is in threaded cooperation with the screw rod I.

[0020] Preferably, the rotating device comprises a fixing frame slidingly fitted in the rack along the width direction of the rack and a driving member II mounted on the fixing frame, the driving member II is fixedly connected with the clamping mechanism, and the driving member II is used to drive the clamping mechanism to rotate.

[0021] Preferably, the rack is provided with a sliding device, the sliding device comprises a bidirectional screw rod for driving the adjacent two fixing frames to slide in the direction close to or away from each other, and a driving member III mounted on the rack and used to drive the bidirectional screw rod to rotate.

[0022] Preferably, the inner cavity blanking mechanism comprises a support frame slidingly fitted to the rack along the width direction of the rack, a driver installed on the support frame, and a cutting tool installed on the driver and used for blanking the inner cavity of the insulator, the driver being used to drive the cutting tool to slide along the length direction of the rack, the support frame being provided with a driving member four used to drive the driver to rotate, and the rotating direction of the cutting tool being opposite to the rotating direction of the insulator.

[0023] The present application has the following advantages:

[0024] When the inner cavity of the insulator is blanked, the clamping mechanism is driven to rotate by the rotating device, the insulator is driven to rotate, the outer surface of the insulator is polished by the polishing belt, and the sides of the adjacent two insulator sheds that are close to each other are polished by the polishing plates, so that the insulator is efficiently polished, the overall processing efficiency of the insulator is improved, the multiple positions of the insulator are polished, the polishing pressure on different positions of the insulator is ensured to be the same by synchronous polishing of the polishing belt and the polishing plates, and the processing quality of the insulator is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present application.

[0026] Figure 2 is a schematic diagram of the connection relationship between the rack and the limiting rod of the present application.

[0027] Figure 3 is a schematic diagram of the position relationship between the sliding part and the limiting rod of the present application.

[0028] Figure 4 is a partial sectional view of the connection relationship between the elastic member two and the polishing plate of the present application.

[0029] Figure 5 is Figure 4 is a partial enlarged view of A in FIG.

[0030] Figure 6 is a partial sectional view of the position relationship between the polishing belt and the rotating roller of the present application.

[0031] REFERENCE NUMERALS:

[0032] 1, rack; 11, limiting rod; 2, inner cavity roughing mechanism; 21, support frame; 22, driver; 23, cutting tool; 3, clamping mechanism; 4, polishing device; 41, mounting frame; 411, sliding groove; 412, sliding part; 413, adjusting part; 42, rotating roller; 43, polishing belt; 44, polishing plate; 5, rotating device; 51, fixed frame; 52, driving part two; 6, tensioning device; 61, tensioning seat; 62, elastic part one; 7, elastic part two; 8, adjusting device; 81, screw one; 82, driving part one; 9, sliding device; 91, bidirectional screw; 92, driving part three; 10, driving part four. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] Referring to Figures 1-6 , the inner cavity roughing forming device of a large-size insulator of the present application comprises a rack 1 and an inner cavity roughing mechanism 2 arranged in the rack 1. Two sets of clamping mechanisms 3 for fixing and clamping the end portions of the insulator and unlocking are arranged in the rack 1. The clamping mechanisms 3 can directly adopt three-jaw chucks or clamps that can be rotatably opened and closed. A plurality of polishing devices 4 are arranged between the two sets of clamping mechanisms 3. A rotating device 5 for driving the clamping mechanisms 3 to rotate is arranged on the rack 1. When the insulator needs to be processed, the two ends of the two insulators are respectively installed into the clamping mechanisms 3 (as shown in Figure 1 ), and then the rotating device 5 is started to drive the clamping mechanisms 3 and the insulator to rotate. At the same time, the inner cavity roughing mechanism 2 is started to process the inner cavity of the insulator. The outer surface and the umbrella skirt of the insulator can be polished by the plurality of polishing devices 4 to perform the working operation on the insulator. During the processing of the insulator, the inner cavity of the insulator can be roughed and processed by the inner cavity roughing mechanism 2, and then the two insulators are moved to the plurality of polishing devices 4 for polishing processing. Alternatively, the inner cavity of the insulator can be roughed and processed by the inner cavity roughing mechanism 2, and at the same time, the plurality of polishing devices 4 can be used for polishing processing.

[0035] Among them, referring to Figure 1 and Figure 2The inner cavity roughing mechanism 2 comprises a support frame 21 slidably fitted on the rack 1 along the width direction of the rack 1, a driver 22 installed on the support frame 21, and a cutting tool 23 installed on the driver 22 and used for roughing the inner cavity of the insulator, the support frame 21 is rotationally fitted with the clamping mechanism 3 close to the support frame 21, when the clamping mechanism 3 moves, the support frame 21 can be driven to move; the driver 22 is horizontally arranged, the driver 22 directly adopts a hydraulic cylinder, the cylinder body of the driver 22 is rotationally fitted on the support frame 21, the piston rod of the driver 22 is detachably connected with the cutting tool 23, the driver 22 is used for driving the cutting tool 23 to slide along the length direction of the rack 1, the support frame 21 is provided with a driving member four 10 used for driving the driver 22 to rotate, the driving member four 10 directly adopts a motor, the housing of the driving member four 10 is fixedly installed on the support frame 21, the output shaft of the driving member four 10 is fixedly connected with the cylinder body of the driver 22, and the rotating direction of the cutting tool 23 is opposite to the rotating direction of the insulator; when the inner cavity of the insulator needs to be roughed, the driver 22 is started, the driver 22 drives the cutting tool 23 to slide into the inner cavity of the insulator to the position to be machined, then the rotating device 5 is started to drive the insulator to rotate, at the same time, the driving member four 10 is started to rotate, the driver 22 and the cutting tool 23 are driven to rotate, the inner cavity of the insulator is roughed and formed by the cutting tool 23, and at the same time, the driver 22 is started to drive the cutting tool 23 to feed along the length direction of the rack 1 in the inner cavity of the insulator.

[0036] With reference to Figure 1 and Figure 2 , the rotating device 5 comprises a fixed frame 51 slidably fitted on the rack 1 along the width direction of the rack 1 and a driving member two 52 fixedly installed on the fixed frame 51, the driving member two 52 directly adopts a motor, the housing of the driving member two 52 is fixedly connected with the fixed frame 51, the output shaft of the driving member two 52 is fixedly connected with the clamping mechanism 3, and the driving member two 52 is used for driving the clamping mechanism 3 to rotate.

[0037] With reference to Figure 1 , Figure 2 and Figure 4, the grinding device 4 includes a mounting frame 41 arranged on the frame 1, a rotating roller 42 rotatably fitted on the mounting frame 41, a grinding belt 43 wound around the rotating roller 42 and used for grinding the outer surfaces of two insulators, and a plurality of grinding plates 44 arranged on the mounting frame 41. Two limiting rods 11 are fixedly arranged on the frame 1. The limiting rods 11 are arranged along the length direction of the frame 1. The mounting frame 41 is slidably fitted on the frame 1 by sliding between the two limiting rods 11 along the length direction of the frame 1. The mounting frame 41 includes a sliding part 412 slidably fitted on the frame 1 and an adjusting part 413 slidably fitted on the sliding part 412 along the width direction of the frame 1. A T-shaped groove for the adjusting part 413 to slide is formed on the sliding part 412. The grinding belt 43 has a "return" shape structure. Two groups of grinding plates 44 are arranged on one adjusting part 413. Each group of grinding plates 44 includes two grinding plates 44 arranged oppositely along the length direction of the frame 1. The two grinding plates 44 respectively abut against the mutually approaching side surfaces of the umbrella skirts of two adjacent insulators and are used for grinding the mutually approaching side surfaces of the umbrella skirts of two adjacent insulators.

[0038] Refer to Figure 2 , Figure 4 and Figure 6 , multiple groups of tensioning devices 6 are arranged on the mounting frame 41. One group of tensioning devices 6 is arranged at each of the four corners of the mounting frame 41. The tensioning device 6 includes a tensioning seat 61 slidably fitted on the mounting frame 41 along the vertical direction and an elastic member 62 fixedly arranged between the tensioning seat 61 and the mounting frame 41. The tensioning seat 61 has a "concave" shape structure. The rotating roller 42 is rotatably fitted on the tensioning seat 61. A motor for driving the rotating roller 42 to rotate can be fixedly installed on the tensioning seat 61. When the motor works, it can drive the rotating roller 42 to rotate, and then drive the grinding belt 43 to rotate to grind the insulators; the elastic member 62 directly adopts a spring. The elastic member 62 is arranged vertically and is used for driving the tensioning seat 61 to slide in the direction away from the insulators.

[0039] Refer to Figure 4 and Figure 5The mounting frame 41 has a sliding groove 411, which is inclined towards the insulator along the direction away from the inner cavity trimming mechanism 2. A guide post adapted to the sliding groove 411 is fixed on the end face of the grinding plate 44. The grinding plate 44 slides along the length of the frame 1 and is fitted into the sliding groove 411 through the guide post. An elastic element 7 is provided between the two grinding plates 44 that abut against the sides of the skirts of two adjacent insulators. The elastic element 7 is directly a spring and is horizontally set. The two ends of the elastic element 7 are fixedly connected to the two grinding plates 44 respectively, and are used to push the two grinding plates 44 to slide in a direction away from each other. When the distance between two adjacent sheds on the insulator is less than the distance between the outer surfaces of the two grinding plates 44, the sheds of the insulator can squeeze the grinding plates 44, the two grinding plates 44 slide along the slide groove 411 and compress the elastic element 7, the two grinding plates 44 slide into the grinding belt 43, and the side of the grinding plate 44 near the grinding belt 43 can support the grinding belt 43.

[0040] Reference Figure 1 , Figure 2 and Figure 3 The frame 1 is provided with an adjustment device 8 for sliding adjustment of the mounting bracket 41. The adjustment device 8 includes a screw 81 rotatably fitted on the frame 1 and a drive component 82 fixedly connected to the screw 81 and used to drive the screw 81 to rotate. The screw 81 is arranged along the length of the frame 1 and is threadedly fitted with the sliding part 412 of the mounting bracket 41. The drive component 82 is directly an electric motor.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The frame 1 is provided with a sliding device 9. The sliding device 9 includes a bidirectional screw 91 for driving two adjacent fixed frames 51 to slide in a direction that moves closer or further away from each other, and a drive component 92 mounted on the frame 1 for driving the bidirectional screw 91 to rotate. The bidirectional screw 91 is rotatably fitted to the frame 1. The drive component 92 is directly driven by an electric motor. The output shaft of the drive component 92 is fixedly connected to the bidirectional screw 91.

[0042] The implementation principle of the inner cavity blank forming device for large-size insulators of the present invention is as follows: When the insulator needs to be processed, the two ends of the two insulators are first installed into the clamping mechanism 3 respectively. Then, the driving component 3 92 is started. The output shaft of the driving component 3 92 drives the bidirectional screw 91 to rotate. When the bidirectional screw 91 rotates, it drives the two sets of clamping mechanisms 3 along the width direction of the frame 1 to slide in a direction closer to each other. The two clamping mechanisms 3 away from the bidirectional screw 91 drive the two support frames 21 to slide in a direction closer to each other, thereby driving the two insulators to move closer to each other.

[0043] During the sliding process of the insulator, the insulator's skirts come into contact with the two grinding plates 44, and at the same time, the outer surface of the insulator presses against the grinding belt 43, thus completing the position adjustment of the insulator. Then the insulator is processed.

[0044] During processing, the driver 22 is started, and the driver 22 drives the cutting blade 23 to slide into the insulator cavity to be processed. Then, the second driver 52 is started, and the second driver 52 drives the clamping mechanism 3 to rotate. The clamping mechanism 3 drives the insulator to rotate. At the same time, the fourth driver 10 is started to rotate, which drives the driver 22 and the cutting blade 23 to rotate. The cutting blade 23 is used to trim and shape the insulator cavity. At the same time, the driver 22 is started, and the cutting blade 23 is fed along the length of the frame 1 in the insulator cavity.

[0045] During the rotation of the insulator, the motor at the rotating roller 42 is started. The motor can drive the rotating roller 42 to rotate, which in turn drives the grinding belt 43 to rotate, grinding the outer surface of the insulator. At the same time, the grinding plate 44 grinds the insulator skirts and the contact position between the skirts and the insulator, thus realizing the processing operation of the insulator.

[0046] After the insulator is processed, the grinding belt 43, the insulator and the cutting blade 23 will no longer rotate. After adjusting the two insulators to move away from each other, the insulator can be removed from between the two clamping mechanisms 3.

[0047] The distance between the two fixed frames 51 can be adjusted by the sliding device 9, and the distance between the central axis of the insulator and the outer surface of the grinding belt 43 can be adjusted to enable the processing of insulators of different diameters.

[0048] The position of multiple grinding devices 4 along the length of the frame 1 can be adjusted by the adjusting device 8. When the distance between two adjacent skirts on the insulator is greater than the width of the grinding belt 43, the adjusting device 8 can drive the multiple grinding devices 4 to move, and the grinding belt 43 can grind different positions on the insulator.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A large-size insulator inner cavity roughing forming device, comprising a rack (1) and an inner cavity roughing mechanism (2) arranged in the rack (1), characterized in that, Two sets of clamping mechanisms (3) are arranged in the rack (1) to clamp and release the end of the insulator, and a plurality of polishing devices (4) are arranged between the two sets of clamping mechanisms (3), the polishing device (4) comprises a mounting frame (41) arranged on the rack (1), a rotating roller (42) rotatably arranged on the mounting frame (41), a polishing belt (43) wound on the rotating roller (42) and used for polishing the outer surface of the two insulators, and a plurality of polishing plates (44) arranged on the mounting frame (41), the plurality of polishing plates (44) are respectively arranged on the side surfaces of the adjacent umbrella skirts of the two insulators, and are used for polishing the side surfaces of the adjacent umbrella skirts of the two insulators, and the rack (1) is provided with a rotating device (5) for driving the clamping mechanism (3) to rotate. A plurality of tensioning devices (6) are arranged on the mounting frame (41), the tensioning device (6) comprises a tensioning seat (61) slidingly arranged on the mounting frame (41) along the vertical direction, and an elastic member (62) arranged between the tensioning seat (61) and the mounting frame (41), and the rotating roller (42) is rotatably arranged on the tensioning seat (61), and the elastic member (62) is used for driving the tensioning seat (61) to slide away from the insulator. A sliding groove (411) is formed in the mounting frame (41), and the polishing plate (44) is slidingly arranged in the sliding groove (411) along the length direction of the rack (1), two polishing plates (44) arranged on the side surfaces of the adjacent umbrella skirts of the two insulators are provided with an elastic member (7), and the two ends of the elastic member (7) are connected with the two polishing plates (44), and the elastic member (7) is used for driving the two polishing plates (44) to slide away from each other. The sliding groove (411) is inclinedly arranged towards the insulator along the direction away from the inner cavity. The mounting frame (41) is slidingly arranged on the rack (1) along the length direction of the rack (1), and the rack (1) is provided with an adjusting device (8) for driving the mounting frame (41) to slide. The inner cavity trimming mechanism (2) comprises a support frame (21) slidingly arranged on the rack (1) along the width direction of the rack (1), a driver (22) mounted on the support frame (21), and a cutting tool (23) mounted on the driver (22) and used for trimming the inner cavity of the insulator, the driver (22) is used for driving the cutting tool (23) to slide along the length direction of the rack (1), the support frame (21) is provided with a driving member (10) for driving the driver (22) to rotate, and the rotating direction of the cutting tool (23) is opposite to the rotating direction of the insulator.

2. The inner cavity rough shaping device for large-sized insulator according to claim 1, characterized in that, The adjusting device (8) comprises a screw rod (81) rotatably arranged on the rack (1), and a driving member (82) connected with the screw rod (81) and used for driving the screw rod (81) to rotate, and the screw rod (81) is threadedly connected with the mounting frame (41).

3. The inner cavity blank forming device of a large-size insulator according to claim 2, characterized in that, The mounting frame (41) comprises a sliding part (412) slidably fitted on the rack (1) and an adjusting part (413) slidably fitted on the sliding part (412) along the width direction of the rack (1), and the sliding part (412) is threadedly fitted with the first screw rod (81).

4. The inner cavity blank forming device of a large-size insulator according to claim 1, characterized in that, The rotating device (5) comprises a fixing frame (51) slidably fitted on the rack (1) along the width direction of the rack (1) and a second driving member (52) mounted on the fixing frame (51), the second driving member (52) is fixedly connected with the clamping mechanism (3), and the second driving member (52) is used for driving the clamping mechanism (3) to rotate.

5. The inner cavity blank forming device of a large-size insulator according to claim 4, characterized in that, The rack (1) is provided with a sliding device (9), the sliding device (9) comprises a bidirectional screw rod (91) used for driving two adjacent fixing frames (51) to slide towards each other or away from each other, and a third driving member (92) mounted on the rack (1) and used for driving the bidirectional screw rod (91) to rotate.

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