A cable protection pipe fixed-length neat cutting device

Abstract

The application provides a cable protection pipe fixed-length neat cutting device, and relates to the technical field of broaching machine segmentation. The cable protection pipe fixed-length neat cutting device comprises a broaching machine device main body and a broaching tool arranged on the broaching machine device main body, and further comprises: a mounting and regulating frame arranged on the upper surface of the workbench of the broaching machine; and a rotating mechanism, which comprises a shaft rotating assembly and a stabilizing assembly, and is used for axial rotation. The cable protection pipe fixed-length neat cutting device is provided with two groups of mirror image arranged rotating mechanisms, which are matched with multiple groups of surrounding clamping bows and clamping claws to synchronously cover the outer wall of the pipe material, so that the clamping force is uniformly dispersed around the pipe wall, the internal bending stress of the pipe material is fully released, the extrusion deformation of the pipe wall caused by one-side cutting is reduced, the cutting burr and bevel problems are effectively eliminated, the cutting is smooth and smooth, the pipe material is not extruded and deformed, the problems of uneven stress of fixed-point clamping, uneven cutting of static cutting and easy deformation of thin-walled pipes are solved.

Description

Technical Field

[0001] This invention relates to the field of broaching and cutting technology, specifically to a fixed-length and neat cutting device for cable protection pipes. Background Technology

[0002] In the manufacturing process of cable protection pipes, fixed-length cutting is one of the core processes. The mainstream processing solutions in the industry mostly rely on ordinary broaching machines paired with fixed cutting tools to complete the pipe cutting operation. The conventional processing flow is as follows: the cable protection pipe is pushed to the cutting station, supported by simple fixed seats at both ends, and then the broaching tool is driven to feed linearly to complete the pipe cutting. This type of processing equipment has a mature structure and low cost, and is widely used in the batch cutting of cable protection pipes in small and medium-sized pipe processing workshops.

[0003] However, existing conventional cutting equipment has several inherent defects in actual processing: the force of clamping the pipe is concentrated on a local pipe wall, the bending stress of the pipe itself is difficult to release, slight deformation of the pipe wall is prone to occur during the cutting process, and defects such as burrs, bevels, and unevenness are easy to occur at the cut; after the pipe is transported to the cutting station, there is no synchronous correction structure at both ends, and the slender cable protection pipe is prone to sagging and arching at both ends due to its own weight, and the pipe axis is offset at the cutting position, making it difficult to guarantee the cutting accuracy of fixed length; the cutting relies only on the unidirectional linear cutting of the broach, and the contact between the tool and the pipe is a local single cutting, the force on the pipe wall is uneven, and thin-walled protection pipes are very prone to cut extrusion deformation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a cable protection pipe fixed-length and neat cutting device, which solves the problems mentioned in the background art above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable protection pipe fixed-length neat cutting device, comprising a broaching machine body and a broaching knife disposed on the broaching machine body, and further comprising: The mounting and regulating frame is installed on the upper surface of the worktable of the broaching machine; The rotary mechanism includes a shaft rotation assembly and a stabilizing assembly. The shaft rotation assembly is used for axial rotation, and the stabilizing assembly is disposed inside the shaft rotation assembly for clamping and fixing the internal cable protection tube. The rotary mechanism has two sets of mirror images distributed on both sides of the puller. The feeding mechanism is fixedly mounted on the upper surface of the mounting and regulating frame by screws, and is used to push the cable protection tube forward; A straightening mechanism is provided at both ends of the mounting and adjusting frame to straighten the cable protection pipes that are drooping at both ends; A drive link is mounted on the upper surface of the broach and engages with a stabilizing component.

[0006] Preferably, the shaft rotation assembly includes a housing, rollers, and a limiting key. The housing is fixedly mounted on the surface of the mounting and adjusting frame, the roller array is disposed inside the housing, the rollers are rotatably connected to the housing, and the limiting key is fixedly mounted above the end face of the housing, and the limiting key is in sliding contact with the drive linkage.

[0007] Preferably, the stabilizing component includes a stabilizing cylinder, a clamping cylinder, a clamping bow, a pushing ring, a clamping claw, and an external toothed ring. The stabilizing cylinder is rotatably disposed inside the outer casing and is in rotatable contact with the roller. The clamping cylinder is disposed inside the stabilizing cylinder and has square holes arranged in an array on its circumferential surface. The end faces of both the clamping cylinder and the stabilizing cylinder are fixedly connected to the end face of the external toothed ring, which is located below the limiting key. The clamping bow is rotatably disposed inside the stabilizing cylinder, and the square holes on the surface of the clamping cylinder allow the clamping bow to extend. The clamping bow is arranged in a mirror image at both ends of the stabilizing cylinder. The pushing ring is disposed inside the stabilizing cylinder and is rotatably connected to it. The outer surface of the pushing ring has teeth that mesh with pushing teeth. The pushing teeth are rotatably disposed inside the outer casing, and the inner circumferential surface of the pushing ring has a wavy, uneven surface. The clamping claw is connected to the inner wall of the stabilizing cylinder, and both ends are connected to the clamping bow to control its bending degree. The clamping claw is slidably connected to the inner circumferential surface of the pushing ring.

[0008] Preferably, the clamping bow includes a clamping plate, a bow wheel, and a clamping spring. One end of the clamping plate is rotatably connected to the inner wall of the stabilizing cylinder, and the other end is rotatably connected to the bow wheel. A protruding key is provided on the surface of the clamping plate, and a clamping spring is connected to the surface of the protruding key. A telescopic rod is provided at the center of the clamping spring, and both ends of the telescopic rod are rotatably connected to the protruding key and the inner wall of the stabilizing cylinder, respectively.

[0009] Preferably, the clamping claw includes a sliding block, an extension bracket, a bow rod, and a clamping wheel. The sliding block is slidably connected to the inner wall of the pushing ring. The extension bracket is a foldable frame. The lower end of the extension bracket is fixedly connected to the inner wall of the stabilizing cylinder, and the upper end is hinged to the sliding block. An elastic band is provided inside the extension bracket, which has an active contraction and folding tendency. The pushing ring passes through the gap of the extension bracket. The bow rod passes through the sliding block. Both ends of the bow rod are provided with traction ropes, which are connected to the protrusions of the clamping plates. The clamping wheel is located at the upper end of the sliding block and is used to clamp the cable protection tube.

[0010] Preferably, the feeding mechanism includes a feeding frame, a pressing rod, a receiving mechanism, and a power box. The feeding frame is mounted on the surface of the mounting and adjusting frame by screws. The pressing rod is fixedly installed on the upper end of the inner side of the feeding frame. A spring is sleeved on the outer side of the pressing rod. A pressing shell is slidably connected to the lower end of the pressing rod. The upper end of the pressing shell is slidably sleeved on the surface of the pressing rod. A pressing roller is provided at the lower end. The receiving mechanism is used to receive the protective tube at the lower end. The power box provides power for the rotation of the receiving mechanism.

[0011] Preferably, the receiving mechanism includes a pad block, a support rod, and a feed wheel. The pad block is disposed on the surface of the feed frame and is replaceable. The support rod is fixedly disposed on the surface of the pad block. The feed wheel is rotatably disposed on the inner side of the upper end of the support rod. The central shaft of the feed wheel is connected to the output shaft of the power box.

[0012] Preferably, the correction mechanism includes a mounting block, an arc plate A, an arc plate B, and an electric telescopic rod. The mounting block is disposed on the surface of the mounting and adjusting frame. The arc plate A is disposed on the upper end of the mounting block. The upper end of the arc plate A is provided with a groove, and a ball bearing is disposed inside the groove. An electric telescopic rod is fixedly disposed on the upper surface of the arc plate A. The free end of the electric telescopic rod is fixedly connected to the arc plate B. The arc plate B has the same structure as the arc plate A and is mirror-symmetrical.

[0013] Preferably, both sides of the drive linkage are racks, the racks are limited by a slidable key and mesh with an external gear ring, a support rod is provided between the two racks, the support rod is placed on the upper end of the pull cutter, the upper end of the pull cutter is provided with a protrusion, and the pull cutter blade is inclined.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This cable protection pipe fixed-length and neat cutting device uses two sets of mirror-arranged rotary mechanisms, combined with multiple sets of internal circumferential clamping bows and clamping claws to synchronously cover the outer wall of the pipe, so that the clamping force is evenly distributed around the pipe wall, fully releasing the bending internal stress of the pipe itself. At the same time, relying on the drive linkage to drive the external toothed ring to drive the overall rotation of the stabilizing component, the pipe is rotated synchronously during the cutting process. With the inclined cutting edge broach, it gradually cuts along the circumference of the pipe, reducing the pipe wall extrusion deformation caused by unilateral cutting, effectively eliminating the problems of burrs and beveled cuts, achieving a smooth cut and no extrusion deformation of the pipe. It solves the problems of uneven force during fixed-point clamping, uneven cuts during static cutting, and easy deformation of thin-walled pipes.

[0015] 2. This cable protection pipe fixed-length neat cutting device, by setting up a correction mechanism at both ends of the installation and control frame, uses an electric telescopic rod to drive the upper and lower mirror arc plates to clamp the end of the pipe. The arc plates have built-in ball bearings that can adapt to the axial feeding and sliding of the pipe, which can correct the arching offset caused by the sag of the pipe under its own weight in real time, ensuring that the axis of the pipe at the cutting station always remains horizontal, and significantly reducing the fixed-length cutting dimension error. It solves the problems of sag at both ends of slender cable protection pipes, cutting positioning offset, and poor fixed-length accuracy.

[0016] 3. This cable protection pipe length-cutting device uses a wave-shaped inner circumferential pushing ring to link multiple sets of foldable and extendable supports, synchronously adjusting the opening amplitude of the clamping bow and clamping claws. It can adapt to various cable protection pipes with different outer diameter specifications. There is no need to disassemble the entire clamp; pipe diameter can be adapted simply by adjusting the rotation angle of the pushing ring. The feeding mechanism is equipped with replaceable pad blocks, and the corresponding height support structure can be changed according to the pipe diameter. The equipment is versatile and has a wider processing range, solving the problems of traditional clamps that only adapt to a single pipe diameter, are cumbersome to change and debug, and have poor processing continuity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram of the mounting and control frame structure of the present invention; Figure 3 This is a schematic diagram of the drive linkage structure of the present invention; Figure 4 This is a schematic diagram of the roller structure of the present invention; Figure 5 This is a schematic diagram of the clamping cylinder structure of the present invention; Figure 6 This is a schematic diagram of the stabilizing cylinder structure of the present invention; Figure 7 This is a schematic diagram of the clamping plate structure of the present invention; Figure 8 This is a schematic diagram of the feed frame structure of the present invention; Figure 9 This is a schematic diagram of the arc-shaped plate A structure of the present invention.

[0018] In the diagram: 1. Main body of the broaching machine; 2. Broach; 3. Mounting and adjusting frame; 4. Rotary mechanism; 41. Shaft rotation assembly; 411. Enclosure shell; 412. Roller; 413. Limit key; 42. Stabilizing assembly; 421. Stabilizing cylinder; 422. Clamping cylinder; 423. Clamping bow; 4231. Clamping plate; 4232. Bow plate wheel; 4233. Clamping spring; 424. Pushing ring; 4241. Pushing tooth; 425. Clamping claw; 4251. Slide 4252. Moving block; 4253. Extension bracket; 4254. Bow frame rod; 42555. Clamping wheel; 426. External toothed ring; 5. Feeding mechanism; 51. Feeding frame; 52. Pressing rod; 521. Pressing shell; 53. Receiving mechanism; 531. Pad block; 532. Support rod; 533. Feeding wheel; 54. Power box; 6. Correction mechanism; 61. Mounting block; 62. Arc plate A; 63. Arc plate B; 64. Electric telescopic rod; 7. Drive linkage. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0023] like Figure 1-9 As shown, a cable protection pipe fixed length neat cutting device includes a broaching device body 1 and a broach 2 set on the broaching device body 1, and also includes: a mounting and adjusting frame 3, a rotating mechanism 4, a feeding mechanism 5, a straightening mechanism 6 and a driving linkage 7. The mounting and adjusting frame 3 is set on the upper surface of the broaching machine's worktable. The rotary mechanism 4 includes a shaft rotation assembly 41 and a stabilizing assembly 42. The shaft rotation assembly 41 is used for axial rotation, and the stabilizing assembly 42 is set inside the shaft rotation assembly 41 for clamping and fixing the internal cable protection tube. The rotary mechanism 4 has two sets of mirror images distributed on both sides of the broach 2. The feed mechanism 5 is fixed on the upper surface of the mounting and adjusting frame 3 by screws and is used to push the cable protection tube forward. The straightening mechanism 6 is set at both ends of the mounting and adjusting frame 3 and is used to straighten the cable protection tubes that are drooping at both ends. The drive linkage 7 is mounted on the upper surface of the broach 2 and engages with the stabilizing assembly 42.

[0024] In this embodiment, the device uses the broaching machine body 1 as the supporting foundation and the mounting and adjusting frame 3 as the unified mounting base for all auxiliary functional mechanisms. The overall layout adopts a configuration of two-end straightening, two-side synchronous rotary clamping, central feeding, and broach 2 linkage rotary cutting. The installation position can be flexibly adjusted according to the target cutting length of the cable protection pipe. The feeding mechanism 5 is responsible for the axial fixed-length conveying of the pipe, the two-end straightening mechanism 6 pre-corrects the drooping and bending defects of the pipe, and the symmetrically arranged double-set rotary mechanism 4 can synchronously center and clamp the two ends of the pipe. When the broach 2 retracts and cuts, it drives the rotary mechanism 4 through the drive linkage 7 to drive the pipe to rotate synchronously, realizing the rotary ring cutting of the pipe. The whole device integrates feeding, straightening, multi-point clamping, and synchronous rotary cutting functions into one unit. The actions of each component are linked and coordinated with each other, fully covering the entire process of cable protection pipe processing from feeding, straightening, positioning and clamping to fixed-length ring cutting. The structure is compact and the transmission linkage logic is coherent, which can simultaneously solve many processing pain points such as pipe conveying deviation, uneven clamping force, and uneven cutting deformation.

[0025] In an optional embodiment, the shaft rotation assembly 41 includes a housing 411, rollers 412, and a limit key 413. The housing 411 is fixedly disposed on the surface of the mounting and adjusting frame 3. The rollers 412 are arranged in an array inside the housing 411 and are rotatably connected to the housing 411. The limit key 413 is fixedly disposed above the end face of the housing 411 and slides in contact with the drive linkage 7.

[0026] In this embodiment, the outer shell 411 is a cylindrical shell structure with two through ends. Multiple sets of rollers 412 are evenly arranged along the circumference of the inner wall to provide rolling support for the outer wall of the stable cylinder 421 and reduce the frictional resistance during the rotation of the stable cylinder 421. The limiting key 413 extends downward to form a guide groove. The rack side of the drive link 7 is inserted into the groove, which restricts the drive link 7 to only move in the horizontal direction, ensuring that the rack and the external gear ring 426 are always accurately engaged, and avoiding transmission misalignment and skipped teeth.

[0027] In an optional embodiment, the stabilizing component 42 includes a stabilizing cylinder 421, a clamping cylinder 422, a clamping bow 423, a pushing ring 424, a clamping claw 425, and an external toothed ring 426. The stabilizing cylinder 421 is rotatably disposed inside the outer casing 411 and is in rotatable contact with the roller 412. The clamping cylinder 422 is disposed inside the stabilizing cylinder 421 and has square holes arranged in an array on its circumferential surface. The end faces of the clamping cylinder 422 and the stabilizing cylinder 421 are both fixedly connected to the end face of the external toothed ring 426, which is located below the limiting key 413. The clamping bow 423 is rotatably disposed on the stabilizing cylinder. Inside 421, the square hole on the surface of the clamping cylinder 422 allows the clamping bow 423 to extend. The clamping bow 423 is arranged in a mirror image at both ends of the stabilizing cylinder 421. The pushing ring 424 is arranged inside the stabilizing cylinder 421 and is rotatably connected to it. The outer surface of the pushing ring 424 is provided with teeth and engages with pushing teeth 4241. The pushing teeth 4241 are rotatably arranged inside the outer casing 411. The inner circumferential surface of the pushing ring 424 has a wavy convex and concave shape. The clamping claw 425 is connected to the inner wall of the stabilizing cylinder 421, and both ends are connected to the clamping bow 423 to control its bending degree. The clamping claw 425 is slidably connected to the inner circumferential surface of the pushing ring 424.

[0028] In this embodiment, the external toothed ring 426, the stabilizing cylinder 421, and the clamping cylinder 422 adopt an integrated flange locking structure, and the three rotate synchronously without relative offset. The outer teeth of the pushing ring 424 mesh with the motor-driven pushing teeth 4241 to achieve rotational drive. The inner wavy concave and convex annular surface serves as a cam track, and the sliding block 4251 slides against the track. The change in the height of the wavy surface can synchronously drive all the clamping claws 425 to open outward or retract inward, realizing multi-point synchronous centering clamping, ensuring that the pipe and the stabilizing cylinder 421 are arranged coaxially, and eliminating the cutting error caused by eccentricity.

[0029] In an optional embodiment, the clamping bow 423 includes a clamping plate 4231, a bow wheel 4232, and a clamping spring 4233. One end of the clamping plate 4231 is rotatably connected to the inner wall of the stabilizing cylinder 421, and the other end is rotatably connected to the bow wheel 4232. A protruding key is provided on the surface of the clamping plate 4231, and the clamping spring 4233 is connected to the surface of the protruding key. A telescopic rod is provided at the center of the clamping spring 4233, and both ends of the telescopic rod are rotatably connected to the protruding key and the inner wall of the stabilizing cylinder 421, respectively.

[0030] In this embodiment, the outer surface of the bow wheel 4232 is covered with an anti-slip rubber layer and has axial protective texture to increase the friction with the outer wall of the pipe and prevent the pipe from slipping during rotational cutting; the clamping spring 4233 is equipped with a telescopic rod to achieve stable extension and retraction without lateral offset. When the clamping claw 425 is released and reset, the clamping spring 4233 automatically pulls the clamping piece 4231 inward to complete the pipe release and release, without the need for an additional reverse drive structure, simplifying the clamping control logic.

[0031] In an optional embodiment, the clamping claw 425 includes a sliding block 4251, an extension bracket 4252, a bow rod 4253, and a clamping wheel 4254. The sliding block 4251 is slidably connected to the inner wall of the pushing ring 424. The extension bracket 4252 is a foldable frame. The lower end of the extension bracket 4252 is fixedly connected to the inner wall of the stabilizing cylinder 421, and the upper end is hinged to the sliding block 4251. An elastic band is provided inside the extension bracket 4252, which has an active contraction and folding tendency. The pushing ring 424 passes through the gap of the extension bracket 4252. The bow rod 4253 passes through the sliding block 4251. Both ends of the bow rod 4253 are provided with traction ropes. The traction ropes are connected to the protruding key of the clamping piece 4231. The clamping wheel 4254 is located at the upper end of the sliding block 4251 and is used to clamp the cable protection tube.

[0032] In this embodiment, the extension bracket 4252 is a cross-folding frame structure. The built-in elastic band is normally kept in a contracted state. When the sliding block 4251 slides outward along the wave-like inner wall of the pushing ring 424, the bracket opens up, pulling the bow frame rod 4253 to move outward synchronously. The traction rope pulls the clamping bow 423 to extend synchronously, realizing that the clamping wheel 4254 and the bow plate wheel 4232 simultaneously fit the outer wall of the pipe at multiple points. The elastic band can quickly pull the bracket to fold after the pushing ring 424 rotates and resets, and simultaneously release the workpiece. The clamping and releasing actions are linked and unified, and the response speed is fast.

[0033] In an optional embodiment, the feeding mechanism 5 includes a feeding frame 51, a pressing rod 52, a receiving mechanism 53, and a power box 54. The feeding frame 51 is mounted on the surface of the mounting and adjusting frame 3 by screws. The pressing rod 52 is fixedly disposed on the upper end of the inner side of the feeding frame 51. A spring is sleeved on the outer side of the pressing rod 52. A pressing shell 521 is slidably connected to the lower end of the pressing rod 52. The upper end of the pressing shell 521 is slidably sleeved on the surface of the pressing rod 52. A pressing roller is provided at the lower end. The receiving mechanism 53 is used to receive the protective tube at the lower end. The power box 54 provides power for the rotation of the receiving mechanism 53.

[0034] In this embodiment, the feeding frame 51 is a portal frame structure with multiple pressing rods 52 arranged in parallel at the top. The spring continuously pushes the pressing shell 521 downward, so that the pressing roller always presses the upper surface of the pipe, forming an upper and lower clamping conveying structure with the lower feeding wheel 533. The pipe does not float or jump during the conveying process. The power box 54 has a built-in geared servo motor, which can accurately control the number of rotations of the feeding wheel 533 and accurately control the feeding length of the pipe to achieve fixed-length feeding.

[0035] In an optional embodiment, the receiving mechanism 53 includes a pad block 531, a support rod 532, and a feed wheel 533. The pad block 531 is disposed on the surface of the feed frame 51 and is replaceable. The support rod 532 is fixedly disposed on the surface of the pad block 531. The feed wheel 533 is rotatably disposed on the inner side of the upper end of the support rod 532. The central shaft of the feed wheel 533 is connected to the output shaft of the power box 54.

[0036] In this embodiment, the pad block 531 is available in multiple specifications. The pad block 531 of different thicknesses is suitable for pipes of different outer diameters. By replacing the pad block 531, the support height of the feed wheel 533 can be adjusted to ensure that the center height of the pipe is aligned with the clamping center of the rotary mechanism 4 and to prevent the conveying pipe from tilting. The feed wheel 533 has an annular anti-slip groove on its outer circumference to increase the friction of the pipe conveying and prevent the feeding from slipping and causing deviation in the fixed length dimension.

[0037] In an optional embodiment, the correction mechanism 6 includes a mounting block 61, an arc plate A62, an arc plate B63, and an electric telescopic rod 64. The mounting block 61 is disposed on the surface of the mounting adjustment frame 3, the arc plate A62 is disposed on the upper end of the mounting block 61, the upper end of the arc plate A62 is provided with a groove, and a ball is provided inside the groove. The electric telescopic rod 64 is fixedly disposed on the upper surface of the arc plate A62, and the free end of the electric telescopic rod 64 is fixedly connected to the arc plate B63. The arc plate B63 and the arc plate A62 have the same structure and are mirror-symmetrical.

[0038] In this embodiment, the inner arc surfaces of the arc plates A62 and B63 are inlaid with ball bearings. When the pipe is transported, the ball bearings roll axially with the pipe, and the clamping and correction process does not hinder the pipe feed. The electric telescopic rod 64 synchronously lifts and lowers to control the opening and closing of the upper and lower arc plates. After the pipe reaches the cutting station, the telescopic rod retracts, and the upper and lower arc plates clamp the pipe tightly, correcting the drooping and bending at both ends of the pipe, and ensuring that the pipe in the cutting section remains straight and horizontal.

[0039] In an optional embodiment, both sides of the drive linkage 7 are racks, which are slidably limited by the limiting key 413 and mesh with the external gear ring 426. A support rod is provided between the two racks, which is supported on the upper end of the pull cutter 2. A protrusion is provided on the upper end of the pull cutter 2, and the blade of the pull cutter 2 is inclined.

[0040] In this embodiment, the mounting rod is attached to the lower part of the upper protrusion of the pull cutter 2. When the pull cutter 2 moves backward for cutting, the protrusion pulls the mounting rod backward, which drives the drive linkage 7 to move horizontally backward in sync. The racks on both sides drive the outer gear rings 426 of the two sets of left and right rotary mechanisms 4 to rotate in the same direction, and the two ends of the pipe rotate synchronously. The inclined blade cuts gradually along the circumference of the pipe, the cutting resistance is evenly distributed, and the cut is smooth without chipping.

[0041] In use, first install the mounting and adjusting frame 3 in a suitable position, then insert the cable protection tube to be cut through the inside of the feeding mechanism 5. A spring pushes the pressing shell 521 to extend along the pressing rod 52 and press and clamp it onto the surface of the protection tube. After the power box 54 is started, it drives the feeding wheel 533 to rotate, causing the protection tube to be pushed forward inside the device. When the protection tube reaches the cutting position, the electric telescopic rod 64 is activated, pushing the arc plate B63 downwards, causing the arc plate A62 and arc plate B63 to clamp the outside of the protection tube, preventing an arch from appearing at the cutting position. The built-in motor is then activated, driving the pushing tooth 4241 to rotate, which in turn pushes the pushing ring 424 to rotate. As the pushing ring 424 rotates, its wavy inner circumferential surface pushes the sliding block 4251, causing the extension bracket 4252 to extend, and the bow rod 4253 and the sliding block 4251 to be simultaneously... The clamping wheel 4254 and the bow wheel 4232 are simultaneously clamped on the outside of the protective tube. Both the clamping wheel 4254 and the bow wheel 4232 have axial anti-slip textures on their surfaces. Through multiple clamping, the protective tube is made straighter and internal stress is eliminated. The broaching machine body 1 is started, and the broach 2 is retracted. At the same time, the broach 2 uses the protrusion at the upper end to drive the drive linkage 7. The drive linkage 7 pushes the external toothed ring 426, so that the stabilizing component 42 rotates inside the shaft rotation component 41. The clamping wheel 4254 and the bow wheel 4232 rotate while clamping the protective tube, so that the protective tube can rotate during the retraction of the broach 2. The rotation of the inner ball bearings of the arc plate A62 and the arc plate B63 does not affect the rotation of the tube. Through the inclined cutting edge of the broach 2, the protective tube can be cut in one revolution during the retraction of the broach 2, so that the protective tube will not be deformed or the cut will be uneven.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0043] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable protection pipe length-aligning cutting device, comprising a broaching machine body (1) and a broach (2) disposed on the broaching machine body (1), characterized in that, Also includes: The mounting control frame (3) is installed on the upper surface of the worktable of the broaching machine; The rotary mechanism (4) includes a shaft rotation assembly (41) and a stabilizing assembly (42). The shaft rotation assembly (41) is used for axial rotation, and the stabilizing assembly (42) is located inside the shaft rotation assembly (41) and is used to clamp and fix the internal cable protection tube. The rotary mechanism (4) has two sets of mirror images distributed on both sides of the puller (2). The feeding mechanism (5) is fixedly mounted on the upper surface of the mounting and regulating frame (3) by screws and is used to push the cable protection tube forward; The correction mechanism (6) is set at both ends of the mounting control frame (3) and is used to correct the cable protection pipes that are drooping at both ends; The drive link (7) is mounted on the upper surface of the puller (2) and engages with the stabilizing component (42).

2. The cable protection pipe fixed-length and neat cutting device according to claim 1, characterized in that: The shaft rotation assembly (41) includes a wrapping shell (411), rollers (412) and a limit key (413). The wrapping shell (411) is fixedly mounted on the surface of the mounting and adjusting frame (3). The rollers (412) are arranged in an array inside the wrapping shell (411). The rollers (412) are rotatably connected to the wrapping shell (411). The limit key (413) is fixedly mounted above the end face of the wrapping shell (411). The limit key (413) is in sliding contact with the drive linkage (7).

3. The cable protection pipe fixed-length and neat cutting device according to claim 2, characterized in that: The stabilizing component (42) includes a stabilizing cylinder (421), a clamping cylinder (422), a clamping bow (423), a pushing ring (424), a clamping claw (425), and an external toothed ring (426). The stabilizing cylinder (421) is rotatably disposed inside the outer casing (411) and is in rotatable contact with the roller (412). The clamping cylinder (422) is disposed inside the stabilizing cylinder (421) and has square holes arranged in an array on its circumferential surface. The end faces of the clamping cylinder (422) and the stabilizing cylinder (421) are both fixedly connected to the end face of the external toothed ring (426). The external toothed ring (426) is located below the limiting key (413). The clamping bow (423) is rotatably disposed inside the stabilizing cylinder. Inside (421), the square hole on the surface of the clamping cylinder (422) allows the clamping bow (423) to extend out. The clamping bow (423) is arranged in a mirror distribution at both ends of the stabilizing cylinder (421). The pushing ring (424) is arranged inside the stabilizing cylinder (421) and rotatably connected to it. The outer surface of the pushing ring (424) is provided with teeth and meshes with pushing teeth (4241). The pushing teeth (4241) are rotatably arranged inside the outer shell (411). The inner circumferential surface of the pushing ring (424) is wavy and concave. The clamping claw (425) is connected to the inner wall of the stabilizing cylinder (421). Both ends are connected to the clamping bow (423) to control its bending degree. The clamping claw (425) is slidably connected to the inner circumferential surface of the pushing ring (424).

4. The cable protection pipe fixed-length and neat cutting device according to claim 3, characterized in that: The clamping bow (423) includes a clamping plate (4231), a bow wheel (4232), and a clamping spring (4233). One end of the clamping plate (4231) is rotatably connected to the inner wall of the stabilizing cylinder (421), and the other end is rotatably connected to the bow wheel (4232). A protruding key is provided on the surface of the clamping plate (4231), and the clamping spring (4233) is connected to the surface of the protruding key. A telescopic rod is provided at the center of the clamping spring (4233), and both ends of the telescopic rod are rotatably connected to the protruding key and the inner wall of the stabilizing cylinder (421), respectively.

5. The cable protection pipe fixed-length and neat cutting device according to claim 4, characterized in that: The clamping claw (425) includes a sliding block (4251), an extension bracket (4252), a bow rod (4253), and a clamping wheel (4254). The sliding block (4251) is slidably connected to the inner wall of the pushing ring (424). The extension bracket (4252) is a foldable frame. The lower end of the extension bracket (4252) is fixedly connected to the inner wall of the stabilizing cylinder (421), and the upper end is hinged to the sliding block (4251). An elastic band is provided inside the extension bracket (4252) to have an active contraction and folding tendency. The pushing ring (424) passes through the gap of the extension bracket (4252). The bow rod (4253) passes through the sliding block (4251). Both ends of the bow rod (4253) are provided with traction ropes. The traction ropes are connected to the protruding key of the clamping piece (4231). The clamping wheel (4254) is located at the upper end of the sliding block (4251) and is used to clamp the cable protection tube.

6. The cable protection pipe fixed-length and neat cutting device according to claim 1, characterized in that: The feeding mechanism (5) includes a feeding frame (51), a pressing rod (52), a receiving mechanism (53), and a power box (54). The feeding frame (51) is mounted on the surface of the mounting and adjusting frame (3) by screws. The pressing rod (52) is fixedly set on the upper end of the inner side of the feeding frame (51). A spring is sleeved on the outer side of the pressing rod (52). A pressing shell (521) is slidably connected to the lower end of the pressing rod (52). The upper end of the pressing shell (521) is slidably sleeved on the surface of the pressing rod (52). A pressing roller is provided at the lower end. The receiving mechanism (53) is used to receive the protective tube at the lower end. The power box (54) provides power for the rotation of the receiving mechanism (53).

7. The cable protection pipe fixed-length and neat cutting device according to claim 6, characterized in that: The receiving mechanism (53) includes a pad block (531), a support rod (532) and a feed wheel (533). The pad block (531) is disposed on the surface of the feed frame (51) and is replaceable. The support rod (532) is fixedly disposed on the surface of the pad block (531). The feed wheel (533) is rotatably disposed on the inner side of the upper end of the support rod (532). The central shaft of the feed wheel (533) is connected to the output shaft of the power box (54).

8. The cable protection pipe fixed-length and neat cutting device according to claim 1, characterized in that: The correction mechanism (6) includes a mounting block (61), an arc plate A (62), an arc plate B (63), and an electric telescopic rod (64). The mounting block (61) is set on the surface of the mounting control frame (3). The arc plate A (62) is set on the upper end of the mounting block (61). The upper end of the arc plate A (62) is provided with a groove, and a ball is provided inside the groove. The electric telescopic rod (64) is fixedly set on the upper surface of the arc plate A (62). The free end of the electric telescopic rod (64) is fixedly connected to the arc plate B (63). The arc plate B (63) has the same structure as the arc plate A (62) and is mirror symmetrical.

9. The cable protection pipe fixed-length and neat cutting device according to claim 3, characterized in that: The drive link (7) has racks on both sides. The racks are limited by the sliding limit key (413) and mesh with the external gear ring (426). A support rod is provided between the two racks. The support rod is placed on the upper end of the pull cutter (2). A protrusion is provided on the upper end of the pull cutter (2). The blade of the pull cutter (2) is set at an angle.

Images