A connector cutting device

Abstract

This invention provides a connector cutting device, relating to the technical field of cutting devices. It includes a support plate, a linear motor fixedly mounted on the top of the support plate, a receiving plate fixedly connected to the output end of the linear motor, and a cutting machine body fixedly connected to one side of the receiving plate. In this invention, a first gear and a second gear cooperate. When the first gear drives the second gear to rotate, the rotation direction of the second gear is opposite to that of the first gear. This, in turn, drives the top rod to rotate via the shaft. The rotation of the top rod compresses the connector, thereby positioning it and ensuring that the remaining connector after cutting can be used normally. Simultaneously, the cooperation between the drop hole and the fixing hole allows the connector to fall from the drop hole under gravity when the clamping mechanism returns to its original position after cutting, as the rotating rod drives the limiting pressure rod away from the connector.

Description

Technical Field

[0001] This invention relates to the field of cutting device technology, and more particularly to a connector cutting device. Background Technology

[0002] A connector is a workpiece used to connect two or more objects. Connectors typically include bolts, nuts, washers, pins, and shafts, which securely connect different parts or components, enabling the entire system or machine to function properly. Connectors are widely used in machinery, electrical engineering, construction, transportation, and other fields. However, for convenience and production efficiency, some connectors are manufactured as a single unit composed of multiple connectors, resulting in a relatively long assembled connector that needs to be cut into individual connectors. While existing cutting devices can quickly cut assembled connectors, the fixed length of the connectors requires positioning and limiting during cutting. This leads to significant time wasted on positioning and limiting during the cutting process, requiring operators to spend considerable time adjusting the device. Furthermore, adjustments are needed after each cut, resulting in a significant waste of time and effort. Therefore, a connector cutting device is needed to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies. In the production of some connectors, for convenience and efficiency, the resulting assembly is typically composed of multiple connectors forming a single unit. This results in a relatively long assembly that needs to be cut into individual connectors. While existing cutting devices can quickly cut the assembly, the fixed length of the connectors necessitates positioning and limiting the length during cutting. This leads to significant time wasted in positioning and limiting, requiring operators to spend considerable time on adjustments. Furthermore, adjustments are needed after each cut, resulting in substantial waste of time and effort.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a connector cutting device, comprising a support plate, a linear motor fixedly mounted on the top of the support plate, a receiving plate fixedly connected to the output end of the linear motor, a cutting machine body fixedly connected to one side of the receiving plate, a protective shell fixedly connected to one side of the cutting machine body, a cutting blade disposed on the inner wall of the protective shell, multiple support frames fixedly connected to the bottom of the support plate, a placement mechanism fixedly connected between the tops of the multiple support frames, the placement mechanism comprising a base plate, the cutting blade being located between one side of the base plate and the support plate, multiple fixing holes being opened on the top of the base plate, a clamping mechanism fixedly connected to the top of the base plate, a driving mechanism disposed between one side of the clamping mechanism, and a side plate fixedly connected to one side of the base plate.

[0005] In a preferred embodiment, the clamping mechanism includes a plurality of first concave plates, the bottom of the first concave plates being fixedly connected to the top of the base plate, the inner wall of the first concave plates having two sliding grooves, two sliders being slidably connected between one side of the two sliding grooves, a connecting hole being provided on one side of the sliders, a connecting plate being fixedly connected between the inner walls of the two connecting holes, a fixing block being fixedly connected to both sides of the connecting plate, and a fixing frame being fixedly connected to the top of the fixing block.

[0006] In a preferred embodiment, a support plate is fixedly connected to the top of the fixing frame, a rotating hole is provided on one side of the support plate, a rotating rod is rotatably connected between the inner walls of the multiple rotating holes, multiple arc-shaped rods are fixedly sleeved on the outer surface of the rotating rods, a limiting pressure rod is rotatably connected between the outer surfaces of two arc-shaped rods, a limiting plate is fixedly connected to the inner wall of the fixing frame, a drop hole adapted to the fixing hole is provided on the top of the limiting plate, and a first gear is fixedly sleeved on the outer surface of the rotating rod.

[0007] In a preferred embodiment, an arc-shaped plate is fixedly connected to the top of the fixing frame, and two connecting blocks are fixedly connected to the top of the arc-shaped plate. A shaft is rotatably embedded on one side of the connecting block, and one end of the shaft is rotatably connected to one side of the support plate. A second gear is fixedly sleeved on the outer surface of the shaft, and the second gear is meshed with the first gear.

[0008] In a preferred embodiment, the top of the fixing frame has two sliding grooves, the inner wall of the sliding grooves is slidably connected to a top rod, and one side of the top rod has a mounting hole, the inner wall of the mounting hole is fixedly connected to the outer surface of the shaft.

[0009] In a preferred embodiment, the driving mechanism includes a second concave plate, the bottom of which is fixedly connected to the top of the base plate, a threaded rod rotatably connected to the inner wall of the second concave plate, and a threaded hole plate slidably connected to the inner wall of the second concave plate.

[0010] In a preferred embodiment, the driving mechanism further includes a base, a drive motor is fixedly connected to the top of the base, a rotating rod is fixedly connected to the output end of the drive motor, and one side of the base is fixedly connected to one side of the side plate.

[0011] In a preferred embodiment, a partition is fixedly connected to the top of the threaded hole plate, a receiving hole is provided on one side of the partition, the inner wall of the receiving hole is rotatably connected to the outer surface of the rotating rod, one side of the partition is rotatably connected to one end of the shaft, the inner wall of the threaded hole plate is threadedly connected to the outer surface of the threaded rod, and one end of the threaded rod is fixedly connected to one end of the rotating rod.

[0012] In a preferred embodiment, the clamping mechanism further includes a shaped plate, one side of which is fixedly connected to one end of a rotating rod. A limiting groove is formed on one side of the shaped plate, and a bending rod is slidably connected to the inner wall of the limiting groove. A hydraulic rod is fixedly connected to one end of the bending rod, and a limiting frame is fixedly connected to the outer surface of the hydraulic rod. One side of the limiting frame is fixedly connected to one side of a support plate.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0014] 1. In this invention, the top of the base plate is provided with an extension plate of the same thickness as the limiting plate. When the connector is placed on top of the limiting plate, the extension plate ensures that the connector is horizontal and does not tilt. The rotating rod passes through multiple support plates and is fixed by the two outermost support plates. The support plates are also fixed by a fixing frame, thus supporting the rotating rod and increasing the structural stability of the equipment. Simultaneously, the rotation of the rotating rod drives the arc-shaped rod to rotate, which in turn drives the limiting pressure rod to clamp the connector on the limiting plate. The design of the first and second concave plates limits the connector. Through the interaction of the first and second gears, the rotation of the rotating rod drives the first gear to rotate, and the first gear… The first gear drives the second gear to rotate, which in turn drives the shaft to rotate. The meshing design of the first and second gears ensures that when the first gear drives the second gear to rotate, the rotation direction of the second gear is opposite to that of the first gear. This, in turn, drives the top rod to rotate via the shaft. The rotation of the top rod then compresses the connector, thereby positioning it and ensuring that the remaining connector can be used normally after cutting. At the same time, the cooperation between the drop hole and the fixing hole allows the connector to fall out of the drop hole under the influence of gravity when the clamping mechanism returns to its original position after cutting. This is achieved by the rotation of the rotating rod, which drives the limiting pressure rod away from the connector.

[0015] 2. In this invention, a drive motor serves as the power source. The threaded rod and threaded hole plate work together to move the threaded hole plate. The rotating rod and shaft are connected to the partition plate, which in turn drives the clamping mechanism to move, achieving a coordinated movement. A hydraulic rod provides thrust, and a limiting groove is linked to the bending rod. During the extension and retraction of the hydraulic rod, the irregular plate rotates, which in turn drives the rotating rod to rotate. The limiting frame supports and fixes the hydraulic rod, increasing the structural stability of the equipment. Attached Figure Description

[0016] Figure 1 A perspective view of a connector cutting device is provided for this invention;

[0017] Figure 2 A side perspective view of a connector cutting device is provided for this invention;

[0018] Figure 3 A perspective view of the placement mechanism of the connector cutting device is provided for this invention;

[0019] Figure 4 A perspective view of the clamping mechanism of a connector cutting device is provided for this invention.

[0020] Figure 5 An exploded perspective view of the clamping mechanism of a connector cutting device is provided for this invention.

[0021] Figure 6 A three-dimensional structural view of the drive mechanism of the connector cutting device is provided for this invention;

[0022] Figure 7 For the present invention Figure 5 Enlarged diagram of point A in the middle.

[0023] Legend:

[0024] 1. Support plate; 2. Placement mechanism; 3. Linear motor; 4. Receiving plate; 5. Cutting machine body; 6. Protective shell; 7. Cutting blade; 8. Support frame;

[0025] 21. Base plate; 22. Fixing hole; 23. Clamping mechanism; 24. Drive mechanism; 25. Side plate;

[0026] 231. First concave plate; 232. Slide groove; 233. Slider; 234. Connecting plate; 235. Fixing block; 236. Fixing frame; 237. Support plate; 238. Rotating rod; 239. Arc-shaped rod; 2310. Limiting pressure rod; 2311. First gear; 2312. Arc-shaped plate; 2313. Connecting block; 2314. Shaft; 2315. Second gear; 2316. Top rod; 2317. Sliding groove; 2318. Limiting plate; 2319. Drop hole; 2320. Irregular plate; 2321. Limiting groove; 2322. Bending rod; 2323. Limiting frame; 2324. Hydraulic rod;

[0027] 241. Second concave plate; 242. Threaded rod; 243. Threaded hole plate; 244. Partition plate; 245. Base; 246. Drive motor; 247. Rotating rod. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1-6 As shown, the present invention provides a technical solution: a connector cutting device, including a support plate 1, a linear motor 3 fixedly mounted on the top of the support plate 1, a receiving plate 4 fixedly connected to the output end of the linear motor 3, a cutting machine body 5 fixedly connected to one side of the receiving plate 4, a protective shell 6 fixedly connected to one side of the cutting machine body 5, a cutting blade 7 provided on the inner wall of the protective shell 6, a plurality of support frames 8 fixedly connected to the bottom of the support plate 1, a placement mechanism 2 fixedly connected between the tops of the plurality of support frames 8, the placement mechanism 2 including a base plate 21, the cutting blade 7 located between the base plate 21 and one side of the support plate 1, a plurality of fixing holes 22 opened on the top of the base plate 21, a clamping mechanism 23 fixedly connected to the top of the base plate 21, a driving mechanism 24 provided between one side of the clamping mechanism 23, and a side plate 25 fixedly connected to one side of the base plate 21;

[0031] Through the above embodiments, the support frame 8 can fix the support plate 1 and the base plate 21 together. At the same time, the gap between the support plate 1 and the base plate 21 can ensure that the cutting blade 7 can pass through, so that the cutting blade 7 can cut the connecting parts. The linear motor 3 can increase the convenience of the device and cooperate with the clamping mechanism 23 and the drive mechanism 24 to greatly increase the working effect of the equipment.

[0032] The clamping mechanism 23 includes a plurality of first concave plates 231. The bottom of the first concave plate 231 is fixedly connected to the top of the base plate 21. Two sliding grooves 232 are opened on the inner wall of the first concave plate 231. Two sliders 233 are slidably connected between one side of the two sliding grooves 232. A connecting hole is opened on one side of the slider 233. A connecting plate 234 is fixedly connected between the inner walls of the two connecting holes. Fixing blocks 235 are fixedly connected to both sides of the connecting plate 234. A fixing bracket 236 is fixedly connected to the top of the fixing block 235.

[0033] The top of the fixed frame 236 is fixedly connected to a support plate 237. A rotating hole is opened on one side of the support plate 237. A rotating rod 238 is rotatably connected between the inner walls of the multiple rotating holes. Multiple arc-shaped rods 239 are fixedly sleeved on the outer surface of the rotating rod 238. A limit pressure rod 2310 is rotatably connected between the outer surfaces of two arc-shaped rods 239. A limit plate 2318 is fixedly connected to the inner wall of the fixed frame 236. A drop hole 2319 that matches the fixed hole 22 is opened on the top of the limit plate 2318. A first gear 2311 is fixedly sleeved on the outer surface of the rotating rod 238.

[0034] Among them, the top of the fixed frame 236 is fixedly connected to the arc plate 2312, and the top of the arc plate 2312 is fixedly connected to two connecting blocks 2313. A shaft 2314 is rotatably embedded on one side of the connecting block 2313. One end of the shaft 2314 is rotatably connected to one side of the support plate 237. A second gear 2315 is fixedly sleeved on the outer surface of the shaft 2314. The second gear 2315 is meshed with the first gear 2311.

[0035] The top of the fixed frame 236 has two sliding grooves 2317. The inner wall of the sliding groove 2317 is slidably connected to the top rod 2316. The top rod 2316 has a mounting hole on one side. The inner wall of the mounting hole is fixedly connected to the outer surface of the shaft 2314.

[0036] In the above embodiments, the top of the base plate 21 is provided with a heightening plate of the same thickness as the limiting plate 2318. When the connector is placed on top of the limiting plate 2318, the heightening plate can make the connector horizontal and prevent it from tilting. The rotating rod 238 passes through multiple support plates 237 and is fixed by the two outermost support plates 237. At the same time, the support plates 237 are fixed by the fixing bracket 236, so that the support plates 237 can support the rotating rod 238 and increase the structural stability of the equipment. At the same time, the rotation of the rotating rod 238 can drive the arc rod 239 to rotate. The rotation of the arc rod 239 can drive the limiting pressure rod 2310 to clamp the connector on the limiting plate 2318. The design of the first concave plate 231 and the second concave plate 241 can limit the connector. Through the cooperation of the first gear 2311 and the second gear 2315, the rotation of the rotating rod 238 drives the first gear 2311 to rotate. Wheel 2311 drives the second gear 2315 to rotate, and the rotation of the second gear 2315 drives the shaft 2314 to rotate. The meshing design of the first gear 2311 and the second gear 2315 means that when the first gear 2311 drives the second gear 2315 to rotate, the rotation direction of the second gear 2315 is opposite to the rotation direction of the first gear 2311. This, in turn, drives the top rod 2316 to rotate through the shaft 2314. The rotation of the top rod 2316 will squeeze the connector, thereby positioning the connector and ensuring that the remaining connector can be used normally after the cutting is completed. At the same time, the cooperation between the drop hole 2319 and the fixing hole 22 means that when the clamping mechanism 23 returns to its original position after the cutting is completed, the rotating rod 238 rotates and drives the limiting pressure rod 2310 away from the connector, allowing the connector to fall from the drop hole 2319 under the action of gravity.

[0037] The drive mechanism 24 includes a second concave plate 241, the bottom of the second concave plate 241 is fixedly connected to the top of the base plate 21, a threaded rod 242 is rotatably connected to the inner wall of the second concave plate 241, and a threaded hole plate 243 is slidably connected to the inner wall of the second concave plate 241.

[0038] The drive mechanism 24 also includes a base 245, a drive motor 246 is fixedly connected to the top of the base 245, a rotating rod 247 is fixedly connected to the output end of the drive motor 246, and one side of the base 245 is fixedly connected to one side of the side plate 25.

[0039] Among them, the top of the threaded hole plate 243 is fixedly connected to the partition plate 244, and a receiving hole is opened on one side of the partition plate 244. The inner wall of the receiving hole is rotatably connected to the outer surface of the rotating rod 238. One side of the partition plate 244 is rotatably connected to one end of the shaft 2314. The inner wall of the threaded hole plate 243 is threadedly connected to the outer surface of the threaded rod 242. One end of the threaded rod 242 is fixedly connected to one end of the rotating rod 247.

[0040] Through the above embodiments, the drive motor 246 serves as the power source, and the threaded rod 242 and the threaded hole plate 243 cooperate with each other to move the threaded hole plate 243. The rotating rod 238 and the shaft 2314 are connected to the partition plate 244, so that the clamping mechanism 23 can be moved through the partition plate 244, thereby achieving the effect of moving together.

[0041] Furthermore, the clamping mechanism 23 also includes a special-shaped plate 2320. One side of the special-shaped plate 2320 is fixedly connected to one end of the rotating rod 238. A limiting groove 2321 is opened on one side of the special-shaped plate 2320. A bending rod 2322 is slidably connected to the inner wall of the limiting groove 2321. A hydraulic rod 2324 is fixedly connected to one end of the bending rod 2322. A limiting frame 2323 is fixedly connected to the outer surface of the hydraulic rod 2324. One side of the limiting frame 2323 is fixedly connected to one side of the support plate 237.

[0042] In the above embodiments, the hydraulic rod 2324 provides thrust, and the limiting groove 2321 is linked with the bending rod 2322. As the hydraulic rod 2324 extends and retracts, it can drive the rotation of the irregular plate 2320, which in turn drives the rotating rod 238 to rotate. The limiting frame 2323 can support and fix the hydraulic rod 2324, increasing the structural stability of the equipment.

[0043] Working principle:

[0044] like Figure 1-6As shown, in use, the connector is placed on top of the limiting plate 2318, with the other side in contact with the raising plate. Then, the hydraulic rod 2324 retracts, causing the bending rod 2322 to move. The bending rod 2322's movement causes the shaped plate 2320 to rotate. The shaped plate 2320's rotation causes the rotating rod 238 to rotate, which in turn causes the arc rod 239 to rotate. The arc rod 239's rotation moves the limiting pressure rod 2310, which then clamps the connector. Meanwhile, the rotating rod 238's rotation causes the first gear 2311 to rotate, which in turn causes the second gear 2315 to rotate. The second gear 2315's rotation causes the shaft 2314 to rotate, which in turn causes the push rod 2316 to rotate. The connector is pushed to position it. The top of the base plate 21 has a heightening plate with the same thickness as the limiting plate 2318. When the connector is placed on top of the limiting plate 2318, the heightening plate ensures the connector is horizontal and does not tilt. The rotating rod 238 passes through multiple support plates 237 and is fixed by the two outermost support plates 237. The support plates 237 are also fixed by the fixing bracket 236, thus supporting the rotating rod 238 and increasing the structural stability of the equipment. The rotation of the rotating rod 238 drives the arc rod 239 to rotate, which in turn drives the limiting pressure rod 2310 to clamp the connector on the limiting plate 2318. The first concave plate 231... The design of the second concave plate 241 can limit the positioning of the connecting piece. Through the interaction of the first gear 2311 and the second gear 2315, the rotation of the rotating rod 238 drives the first gear 2311 to rotate, which in turn drives the second gear 2315 to rotate. The rotation of the second gear 2315 then drives the shaft 2314 to rotate. The meshing design of the first gear 2311 and the second gear 2315 ensures that when the first gear 2311 drives the second gear 2315 to rotate, the rotation direction of the second gear 2315 is opposite to that of the first gear 2311. This, in turn, drives the push rod 2316 to rotate via the shaft 2314. The rotation of the push rod 2316 then compresses the connecting piece, thereby positioning it and subsequently driving... The output of motor 246 drives rotating rod 247 to rotate, which in turn drives threaded rod 242 to rotate. The threaded rod 242 then moves threaded hole plate 243, which in turn moves partition plate 244. The partition plate 244 then moves rotating rod 238 and shaft 2314, which in turn moves clamping mechanism 23. This movement of the connecting piece allows it to move. The cutting machine body 5 then drives cutting blade 7 to rotate, and the cutting machine body 5 moves via linear motor 3. The cutting blade 7 then cuts the connecting piece. After cutting, the connecting piece falls from the groove in support plate 1. Once cutting is complete, the clamping mechanism 23 returns via drive motor 246.Then, as the hydraulic rod 2324 extends, the curved rod 239 moves away from the connector, allowing the connector to fall out of the drop hole 2319 under the influence of gravity.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A connector cutting device, comprising a support plate (1), characterized in that: A linear motor (3) is fixedly installed on the top of the support plate (1). A receiving plate (4) is fixedly connected to the output end of the linear motor (3). A cutting machine body (5) is fixedly connected to one side of the receiving plate (4). A protective shell (6) is fixedly connected to one side of the cutting machine body (5). A cutting blade (7) is provided on the inner wall of the protective shell (6). A plurality of support frames (8) are fixedly connected to the bottom of the support plate (1). A placement mechanism (2) is fixedly connected between the tops of the plurality of support frames (8). The placement mechanism (2) includes a base plate (21). The cutting blade (7) is located between one side of the base plate (21) and the support plate (1). The top of the base plate (21) has multiple fixing holes (22). A clamping mechanism (23) is fixedly connected to the top of the base plate (21). A driving mechanism (24) is provided between one side of the clamping mechanism (23). A side plate (25) is fixedly connected to one side of the base plate (21). The clamping mechanism (23) includes multiple first concave plates (231). The bottom of each first concave plate (231) is fixedly connected to the top of the base plate (21). The inner wall of 231) has two sliding grooves (232), and two sliders (233) are slidably connected between one side of the two sliding grooves (232). One side of each slider (233) has a connecting hole, and a connecting plate (234) is fixedly connected between the inner walls of the two connecting holes. Both sides of the connecting plate (234) are fixedly connected to fixing blocks (235), and the top of each fixing block (235) is fixedly connected to a fixing frame (236). The top of the fixing frame (236) is fixedly connected to a support plate (237), and one side of the support plate (237) has a connecting hole. The device is provided with rotating holes, and rotating rods (238) are rotatably connected between the inner walls of the multiple rotating holes. Multiple arc-shaped rods (239) are fixedly sleeved on the outer surface of the rotating rods (238). Limiting pressure rods (2310) are rotatably connected between the outer surfaces of the two arc-shaped rods (239). A limiting plate (2318) is fixedly connected to the inner wall of the fixing frame (236). A drop hole (2319) adapted to the fixing hole (22) is opened on the top of the limiting plate (2318). A first gear (2311) is fixedly sleeved on the outer surface of the rotating rods (238). An arc-shaped plate (2312) is fixedly connected to the top of the fixed frame (236). Two connecting blocks (2313) are fixedly connected to the top of the arc-shaped plate (2312). A shaft (2314) is rotatably embedded on one side of the connecting block (2313). One end of the shaft (2314) is rotatably connected to one side of the support plate (237). A second gear (2315) is fixedly sleeved on the outer surface of the shaft (2314). The second gear (2315) meshes with the first gear (2311). The top of the fixing frame (236) has two sliding grooves (2317), and the inner wall of the sliding groove (2317) is slidably connected to a top rod (2316). One side of the top rod (2316) has an installation hole, and the inner wall of the installation hole is fixedly connected to the outer surface of the shaft (2314).

2. The connector cutting device according to claim 1, characterized in that: The driving mechanism (24) includes a second concave plate (241), the bottom of the second concave plate (241) is fixedly connected to the top of the base plate (21), a threaded rod (242) is rotatably connected to the inner wall of the second concave plate (241), and a threaded hole plate (243) is slidably connected to the inner wall of the second concave plate (241).

3. The connector cutting device according to claim 2, characterized in that: The drive mechanism (24) also includes a base (245), a drive motor (246) is fixedly connected to the top of the base (245), a rotating rod (247) is fixedly connected to the output end of the drive motor (246), and one side of the base (245) is fixedly connected to one side of the side plate (25).

4. The connector cutting device according to claim 3, characterized in that: A partition plate (244) is fixedly connected to the top of the threaded hole plate (243). A receiving hole is provided on one side of the partition plate (244). The inner wall of the receiving hole is rotatably connected to the outer surface of the rotating rod (238). One side of the partition plate (244) is rotatably connected to one end of the shaft (2314). The inner wall of the threaded hole plate (243) is threadedly connected to the outer surface of the threaded rod (242). One end of the threaded rod (242) is fixedly connected to one end of the rotating rod (247).

5. A connector cutting device according to claim 1, characterized in that: The clamping mechanism (23) further includes a special-shaped plate (2320), one side of which is fixedly connected to one end of a rotating rod (238). A limiting groove (2321) is provided on one side of the special-shaped plate (2320). A bending rod (2322) is slidably connected to the inner wall of the limiting groove (2321). A hydraulic rod (2324) is fixedly connected to one end of the bending rod (2322). A limiting frame (2323) is fixedly connected to the outer surface of the hydraulic rod (2324). One side of the limiting frame (2323) is fixedly connected to one side of a support plate (237).

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