A MPP cable protection tube processing equipment

Abstract

An MPP cable protection pipe processing equipment relates to the field of pipe processing technology, including a fixing device, a supporting device, and a heating and flaring device; the fixing device includes a connecting frame and a fixed rod that is slidably and elastically mounted on the connecting frame; the supporting device includes a supporting frame, an adjusting component for controlling the movement of the supporting rod, and a plurality of supporting rods that are radially slidably mounted on the supporting frame; the heating and flaring device includes a mounting rod, a heat insulation barrel, an electric heater slidably mounted on the mounting rod, a sliding cylinder slidably mounted on the mounting rod, a rotating frame rotatably mounted on the sliding cylinder, a flaring punch slidably mounted on the rotating frame, and a nozzle disposed on the flaring punch; a connecting component is provided between the electric heater and the supporting frame; the nozzle and the electric heater are connected by a linkage component; this invention can be applied to uneven construction site environments, and the position of the flaring punch can be adjusted according to the pipe diameter; after heating and flaring, the pipe opening can also be cooled.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline processing, and in particular to an MPP cable protection pipe processing device. Background Art

[0002] MPP cable protection pipe is a commonly used cable protection pipe used to protect cables from damage by the external environment. It is widely used in construction, bridges, tunnels and other projects. In order to ensure the normal operation of the cable and extend its service life, it is very important to correctly connect the MPP cable protection pipe. MPP cable excavation pipe and MPP cable direct buried pipe can adopt a socket-type connection method, which can save construction costs and construction period. The socket-type method requires the MPP cable protection pipe to be expanded to widen the pipe mouth for subsequent installation. Most of the existing expansion equipment is not easy to move and can only be placed on flat ground. It is also necessary to replace the expansion punch to process MPP cable protection pipes of different specifications, which is inconvenient to operate on the construction site. Therefore, it is necessary to invent an MPP cable protection pipe processing equipment to solve the above problems. Summary of the invention

[0003] In view of the above problems, the present invention proposes an MPP cable protection tube processing equipment, and the technical solution used is:

[0004] An MPP cable protection tube processing device comprises a fixing device, a supporting device, and a heating expansion device; the fixing device comprises a connecting frame, and a fixing rod slidably and elastically mounted on the connecting frame;

[0005] The supporting device comprises a supporting frame, an adjusting assembly for controlling the movement of a supporting rod, and a plurality of supporting rods radially slidably mounted on the supporting frame.

[0006] Further, the heating and expanding device includes a mounting rod fixedly mounted between the connecting frame and the supporting frame, an insulating barrel fixedly mounted on the supporting frame, an electric heater slidably mounted on the mounting rod and intermittently entering the insulating barrel, a sliding cylinder slidably mounted on the mounting rod, a rotating frame rotatably mounted on the sliding cylinder, an expanding punch block radially slidably mounted on the rotating frame, a linkage assembly, a nozzle arranged on the expanding punch block, and a water storage box connected to the nozzle and fixedly mounted on the rotating frame; a connecting assembly is provided between the electric heater and the supporting frame; the nozzle and the electric heater are connected through a linkage assembly; the linkage assembly includes a linkage rod 1 that slides axially and is elastically mounted in the expanding punch block, a linkage rod 2 that slides radially and is elastically mounted in the expanding punch block and is intermittently driven to move by the linkage rod 1, a slide rail slidably connected to the linkage rod 1, and a linkage frame fixedly connected to the slide rail, axially sliding and elastically mounted on the rotating frame, and the linkage frame is rotatably connected to the electric heater; the nozzle is fixedly mounted on the linkage rod 2; the slide rail is fixedly mounted on the linkage frame.

[0007] Furthermore, a fixing block is fixedly mounted on the fixing rod.

[0008] Furthermore, the adjusting assembly includes a bevel gear set, and a lead screw 1 which is arranged corresponding to the support rod and radially installed on the support frame; the support rod is threadedly connected with the corresponding lead screw 1; the bevel gear set includes an input bevel gear rotatably installed on the support frame, and an output bevel gear coaxially fixedly installed on the lead screw 1 and meshing with the input bevel gear.

[0009] Furthermore, the input bevel gear is driven to rotate by a connecting port or a control motor.

[0010] Furthermore, a supporting roller is rotatably mounted on the outer end of the supporting rod.

[0011] Furthermore, the connecting assembly includes a linkage disk rotatably mounted on a support frame, and a clamping rod which slides radially, is elastically mounted on the support frame, and is slidably connected to the linkage disk; a clamping hole is provided on the electric heater corresponding to the clamping rod; and the linkage disk is intermittently slidably connected to the support rod.

[0012] Furthermore, the heating and expanding device also includes a servo screw installed in the mounting rod, and the sliding cylinder is threadedly connected to the servo screw.

[0013] Furthermore, the heating and expanding device also includes a second lead screw corresponding to the expanding punch block; the second lead screw is radially installed on the rotating frame, and the expanding punch block is threadedly connected to the second lead screw.

[0014] Furthermore, the heating and expanding device also includes a rotating assembly, which includes a servo motor fixedly mounted on the sliding cylinder, a driving gear coaxially fixedly connected to the output end of the servo motor, and a driven gear ring coaxially fixedly mounted on the rotating frame and meshing with the driving gear.

[0015] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0016] The present invention can be applied to construction sites with uneven ground through the coordinated design of a fixing device, a supporting device and a heating expanding device. The operation is simple and quick, and the position of the expanding punch can be adjusted according to the pipe diameter. There is no need to replace the expanding punch, and the present invention can adapt to MPP cable protection pipes of various specifications. After the heating expansion is completed, the present invention can also cool the pipe mouth, further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a working schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the fixing device of the present invention.

[0020] Figure 4 It is a cross-sectional schematic diagram of the AA section of the fixing device of the present invention.

[0021] Figure 5-Figure 6 It is a schematic diagram of the explosion structure of the support device of the present invention.

[0022] Figure 7 It is a schematic diagram of the assembly structure of the bevel gear set and the lead screw 1 in the support device of the present invention.

[0023] Figure 8 It is a schematic structural diagram of the heating expansion device of the present invention.

[0024] Fig. 9 It is a schematic diagram of the assembly structure of the heating expansion device and the support plate three of the present invention.

[0025] Fig.10 It is a schematic structural diagram of the mounting rod in the heating expansion device of the present invention.

[0026] Fig.11 It is a schematic diagram of the cross-sectional structure of the mounting rod, servo lead screw and sliding cylinder in the heating expansion device of the present invention.

[0027] Fig.12 It is a schematic diagram of the structure of the electric heater in the heating and expanding device of the present invention.

[0028] Figure 13-Figure 15It is a partial structural schematic diagram of the heating and expanding device of the present invention.

[0029] Figure 16-Figure 18 It is a schematic diagram of a partial explosion structure of the heating and expanding device of the present invention.

[0030] Fig.19 It is a schematic structural diagram of the linkage frame in the heating expansion device of the present invention.

[0031] Figure 20-21 It is a schematic diagram of the internal assembly structure of the expanding punch block in the heating expanding device of the present invention.

[0032] Fig. 22 It is a schematic diagram of the connection between the control terminal and the electrical components of the present invention.

[0033] Figure Number:

[0034] 1-fixing device; 101-connecting frame; 102-fixing rod; 103-fixing block;

[0035] 2-support device; 201-support frame (2011-support plate 1; 2012-support plate 2; 2013-support plate 3); 202-bevel gear set (2021-input bevel gear; 2022-output bevel gear; 2023-connecting port); 203-screw 1; 204-support rod (2041-support roller); 205-linkage plate (2051-limiting slide groove 1; 2052-limiting slide groove 2); 206-clamp rod;

[0036] 3-heating expansion device; 301-installation rod; 302-electric heater (3021-card hole); 303-insulation barrel; 304-servo lead screw; 305-sliding cylinder; 306-rotating frame (3061-embedded slot); 307-rotating assembly (3071-servo motor; 3072-driving gear; 3073-driven gear ring); 308-lead screw 2; 309-expansion punch block (3091-sliding shaft); 310-linkage rod 1 (3101-limiting block); 311-linkage rod 2; 312-sprinkler; 313-slide rail; 314-linkage frame; 315-water storage box;

[0037] 4-Control terminal. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0039] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "in", "out", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Embodiment 1:

[0040] This embodiment is used for the expansion processing of the MPP cable protection tube, such as Figure 1-Figure 2 and Fig. 22 As shown, an MPP cable protection tube processing device includes a fixing device 1, a supporting device 2, a heating and expanding device 3 and a control end 4.

[0041] like Figure 3-Figure 4 As shown, the fixing device 1 includes a connecting frame 101, a fixing rod 102 and a fixing block 103; a pair of fixing rods 102 are provided, and the two fixing rods 102 slide symmetrically and are elastically installed in the connecting frame 101 through a tension spring; a fixing block 103 is fixedly installed on each fixing rod 102, and a friction surface is provided on the inner end of the fixing block 103;

[0042] Specifically, before expanding the mouth, the operator pulls open the fixing rod 102 (the fixing rod 102 can serve as a handle) to extend the supporting device 2 into the MPP cable protection tube. Then, the operator releases the fixing rod 102, and the tension spring resets to drive the fixing rod 102 to move. The friction surface at the inner end of the fixing block 103 contacts the outer wall of the MPP cable protection tube, thereby fixing the entire device relatively to the MPP cable protection tube. There is no need to place the device on the ground, and there is no requirement for the flatness of the ground.

[0043] like Figure 5-Figure 7 and Fig. 9As shown, the support device 2 includes a support frame 201, a bevel gear set 202, a lead screw 203, a support rod 204, a linkage plate 205 and a clamping rod 206; the support frame 201 includes a circular support plate 1 2011, a support plate 2012 and a support plate 3 2013 which are fixedly connected in sequence, and the support plate 3 2013 is fixedly connected to the insulation barrel 303 of the heating and expanding device 3; the bevel gear set 202 includes an input bevel gear 2021 and three output bevel gears 2022, and the input bevel gear 2021 is rotatably mounted on the support plate 1 2011, and the center of the circle is A connection port 2023 cooperating with a hexagonal screwdriver is coaxially fixedly installed (the connection port 2023 extends out of the support plate 1 2011), and three output bevel gears 2022 are all meshed with the input bevel gear 2021; each input bevel gear 2021 is coaxially fixedly connected with a lead screw 1 203, and the lead screw 1 203 is radially installed on the support plate 2 2012; each lead screw 1 203 is threadedly connected with a support rod 204 radially slidably installed on the support plate 2 2012; a support roller 2041 is rotatably installed on the outer end of each support rod 204;

[0044] There are three clamping rods 206 evenly distributed along the circumference, and they slide radially and are installed on the support plate 3 2013 through a tension spring; a connecting block is fixedly provided on the electric heater 302 of the heating expansion device 3, and three clamping holes 3021 are provided on the connecting block corresponding to the three clamping rods 206, and a avoidance opening is provided at the center of the support plate 3 2013 corresponding to the connecting block; the linkage disk 205 is rotatably installed at the center of the support plate 2 2012, and the linkage disk 205 is provided with a corresponding support rod 204 A limiting slide groove 1 2051 gradually extends from the outside to the inside, and a limiting slide groove 2052 gradually extends from the outside to the inside corresponding to the clamping rod 206; the limiting slide groove 1 2051 is connected to the outside of the linkage disk 205, and a pin is fixed on the support rod 204, and the pin intermittently enters the corresponding limiting slide groove 1 2051 to slide; the limiting slide groove 2052 is closed, and a pin is fixed on the clamping rod 206, and is slidably installed in the corresponding limiting slide groove 2052 through the pin;

[0045] Specifically, before the support device 2 enters the MPP cable protection tube, the operator rotates the connection port 2023 with a hexagonal screwdriver to rotate the input bevel gear 2021, driving the three output bevel gears 2022 to rotate, and the output bevel gear 2022 drives the lead screw 203 to rotate, and the support rod 204 moves radially outward, so that the three support rollers 2041 can roughly contact the inner wall of the MPP cable protection tube. Then, the operator puts the support frame 201 into the MPP cable protection tube, and the support rollers 2041 roll along the inner wall of the MPP cable protection tube, thereby supporting the entire device in the MPP cable protection tube; when the support rod 204 moves radially outward, the pin shaft thereon disengages from the corresponding limit slide groove 2051, and the clamping rod 206 does not extend;

[0046] After the expansion is completed, the electric heater 302 enters the insulation barrel 303, and the connecting block thereon enters the avoidance port. The operator pulls the support frame 201 out of the MPP cable protection tube and reversely rotates the connecting port 2023 to move the support rod 204 radially inward. The pin shaft on the support rod 204 enters the corresponding limiting slide groove 2051 and slides therein, thereby driving the linkage disk 205 to rotate. At the same time, the pin shaft on the clamping rod 206 slides in the corresponding limiting slide groove 2052, and the clamping rod 206 is driven to slide radially inward. The clamping rod 206 extends into the corresponding clamping hole 3021, and the electric heater 3020 is relatively fixed to the support frame 201, ready for cooling.

[0047] like Figure 8-Figure 21 As shown, the heating and expanding device 3 includes a mounting rod 301, an electric heater 302, an insulating barrel 303, a servo lead screw 304, a sliding cylinder 305, a rotating frame 306, a rotating assembly 307, a lead screw 2 308, an expanding punch 309, a linkage rod 1 310, a linkage rod 2 311, a nozzle 312, a slide rail 313, a linkage frame 314 and a water storage box 315; the mounting rod 301 is fixedly installed between the connecting frame 101 and the support plate 3 2013; the insulating barrel 303 is fixedly installed on the support plate 3 2013; the electric heater 302 is slidably installed on the mounting rod 301 and intermittently enters the insulating barrel 303; the servo lead screw 304 is installed in the mounting rod 301, and the sliding cylinder 305 is slidably installed on the mounting rod 301 and is threadedly connected to the servo lead screw 304;

[0048] The rotating frame 306 is coaxially rotatably mounted on the sliding cylinder 305; the rotating assembly 307 includes a servo motor 3071, a driving gear 3072 and a driven ring gear 3073; the servo motor 3071 is fixedly mounted on the sliding cylinder 305, and its output end is coaxially fixedly connected with the driving gear 3072; the driven ring gear 3073 is coaxially fixedly mounted on the rotating frame 306 and meshes with the driving gear 3072; the servo motor 3071 drives the driving gear 3072 to rotate, and the driving gear 3072 drives the driven ring gear 3073 to rotate, and the rotating frame 306 rotates accordingly;

[0049] There are three flaring punches 309 which are evenly arranged along the circumference and radially slidably mounted on the rotating frame 306; each flaring punch 309 corresponds to a lead screw 308 which cooperates with a hexagonal screwdriver, and the lead screw 308 is radially mounted on the rotating frame 306; a sliding shaft 3091 extending along the axial direction is fixedly arranged in each flaring punch 309, and the sliding shaft 3091 is threadedly connected with the corresponding lead screw 308; the flaring surface of the flaring punch 309 is first an inclined surface and then a plane, and the inclined surface and the plane have a smooth transition; a nozzle 312 is radially slidably mounted on the outer end of each flaring punch 309, and the nozzle 312 is connected to a water storage box 315 fixedly mounted on the rotating frame 306, and a solenoid valve is arranged between the nozzle 312 and the rotating frame 306;

[0050] In each flaring punch 309, a linkage rod 1 310 is axially slidably installed in the sliding shaft 3091, and a sloped stopper 3101 is fixedly provided on the linkage rod 1 310; the linkage rod 2 311 slides radially and is elastically installed in the flaring punch 309 through a compression spring and intermittently moves along the inclined surface of the stopper 3101; the nozzle 312 is fixedly installed on the linkage rod 2 311; the linkage rod 1 310 corresponds to a radially extending slide rail 313, one end of the linkage rod 1 310 is slidably connected to the corresponding slide rail 313, and the other end is elastically connected to the flaring punch 309 through a compression spring;

[0051] All the slide rails 313 are fixedly mounted on the linkage frame 314; the linkage frame 314 slides along the axial direction and is elastically mounted on the rotating frame 306 through a compression spring, and the linkage frame 314 is rotatably connected to the electric heater 302; the rotating frame 306 is provided with embedding grooves 3061 corresponding to the three slide rails 313, and the slide rails 313 are intermittently embedded in the corresponding embedding grooves 3061;

[0052] Specifically, in the initial state, the electric heater 302 does not enter the insulation barrel 303; after the support device 2 supports the entire equipment, the operator rotates the screw 2 308 with a hexagonal screwdriver, and the sliding shaft 3091 drives the expansion punch 309 to move, and the position of the expansion punch 309 is adjusted according to the pipe diameter; the electric heater 302 is started to heat the pipe mouth of the MPP cable protection pipe in the air, and then the servo screw 304 drives the sliding cylinder 305 to move, and at the same time the servo motor 3071 drives the rotating frame 306 to rotate, and the expansion punch 309 starts to rotate around the axis Rotate and move axially into the MPP cable protection tube at the same time, the expanding surface of the expanding punch 309 gradually expands the tube opening after heating and softening; while expanding, the electric heater 302 is pushed by the rotating frame 306 to gradually enter the insulation barrel 303 (at this time, the slide rail 313 enters the corresponding embedding groove 3061); after the expansion is completed, the electric heater 302 completely enters the insulation barrel 303, the sliding cylinder 305 stops moving, the rotating frame 306 stops rotating, and the operator grabs the fixing rod 102 to pull the support frame 201 out of the MPP cable protection tube;

[0053] After the clamping rod 206 clamps the electric heater 302, the servo screw 304 drives the sliding cylinder 305 to move in the opposite direction for a short distance. At this time, since the electric heater 302 is fixed, the linkage frame 314 moves a short distance axially relative to the rotating frame 306, and the slide rail 313 disengages from the corresponding embedded groove 3061. The linkage rod 1 310 moves under the reset action of the compression spring, and the limit block 3101 moves accordingly and pushes the linkage rod 2 311 to move radially outward, so that the nozzle 312 extends out; then, the operator extends the support frame 201 into the MPP cable protection tube again, the solenoid valve opens, the nozzle 312 starts to spray water to cool the expanded pipe mouth, and the servo motor 3071 drives the rotating frame 306 to rotate again, so as to expand the cooling range and improve the cooling efficiency; after the cooling is completed, the equipment is closed and pulled out.

[0054] like Fig. 22 As shown, the control end 4 includes a main controller, an interactive switch, an information transmission module, a storage module and a power module, and the main controller is electrically connected to the interactive switch, the information transmission module, the storage module, the power module, the electric heater 302, the servo screw 304, and the servo motor 3071; the main controller is used to control the operation of the entire MPP cable protection tube processing equipment; the interactive switch is used to control the opening and closing of the electric heater 302, the servo screw 304 and the servo motor 3071; the information transmission module is used for information transmission between the main controller and the electric heater 302, the servo screw 304, and the servo motor 3071; the power module is used to provide a stable power supply for the control end 4; the storage module is used to store the operation information data of the entire MPP cable protection tube processing equipment.

[0055] The method of using this embodiment is as follows:

[0056] In the first step, according to the pipe diameter, the operator uses a hexagonal screwdriver to rotate the connection port 2023, adjust the position of the support rod 204, and rotate the lead screw 2 308 to adjust the position of the expansion punch 309;

[0057] In the second step, the operator pulls open the fixing rod 102, puts the support frame 201 into the MPP cable protection tube, loosens the fixing rod 102, and the fixing block 103 contacts the inner wall of the MPP cable protection tube;

[0058] The third step is to start the electric heater 302. After the pipe mouth is gradually heated and softened, the servo screw 304 and the servo motor 3071 are started, and the expanding punch 309 expands the pipe mouth after heating and softening, and the electric heater 302 gradually enters the insulation barrel 303.

[0059] In the fourth step, after the expansion is completed, the operator pulls and pulls the fixing rod 102, pulls out the support frame 201, and uses a hexagonal screwdriver to reversely rotate the connecting port 2023, and the clamping rod 206 clamps the electric heater 302; the servo screw 304 drives the sliding cylinder 305 to move a short distance in the opposite direction, and the nozzle 312 extends. Then, the operator extends the support frame 201 into the MPP cable protection tube again, the solenoid valve opens, the nozzle 312 starts to spray water, and the servo motor 3071 drives the rotating frame 306 to rotate again to spray water to cool the expanded pipe mouth; after cooling, the operator closes and pulls out the equipment. Embodiment 2:

[0060] This embodiment is designed based on the first embodiment as a whole, and the connection port 2023 is replaced by a control motor (not shown in the drawings) electrically connected to the control terminal 4, and the input bevel gear 2021 is driven by the motor to rotate;

[0061] The method of use of this embodiment is substantially the same as that of the first embodiment, except that:

[0062] 1. When adjusting the position of the support rod 204 according to the pipe diameter, the support frame 201 can be extended into the MPP cable protection pipe and then adjusted by controlling the motor, so that the support roller 2041 can be more fully in contact with the inner pipe wall of the MPP cable protection pipe, so that the support effect is better;

[0063] 2. When preparing for cooling, there is no need to pull out the support frame 201. The control motor directly drives the input bevel gear 2021 to rotate, so that the clamping rod 206 extends and clamps the electric heater 302. At this time, the cooling work continues. The pipe mouth is cooled during the process of pulling out the support frame 201, which reduces the process and improves work efficiency.

Claims

1. An MPP cable protection tube processing equipment, characterized in that: It includes a fixing device, a supporting device, and a heating and expanding device; the fixing device includes a connecting frame, and a fixing rod slidably and elastically mounted on the connecting frame; the supporting device includes a supporting frame, an adjusting component for controlling the movement of the supporting rod, and a plurality of supporting rods radially slidably mounted on the supporting frame; the heating and expanding device includes a mounting rod fixedly mounted between the connecting frame and the supporting frame, an insulating barrel fixedly mounted on the supporting frame, an electric heater slidably mounted on the mounting rod and intermittently entering the insulating barrel, a sliding cylinder slidably mounted on the mounting rod, a rotating frame rotatably mounted on the sliding cylinder, an expanding punch radially slidably mounted on the rotating frame, a linkage component, and a setting A spray head on the flaring punch block, and a water storage box connected with the spray head and fixedly mounted on the rotating frame; a connecting assembly is provided between the electric heater and the supporting frame; the spray head and the electric heater are connected via a linkage assembly; the linkage assembly comprises a linkage rod 1 which slides axially and is elastically mounted in the flaring punch block, a linkage rod 2 which slides radially and is elastically mounted in the flaring punch block and is intermittently driven to move by the linkage rod 1, a slide rail which is slidably connected to the linkage rod 1, and a linkage frame which is fixedly connected to the slide rail, slides axially and is elastically mounted on the rotating frame, and is rotatably connected to the electric heater; the spray head is fixedly mounted on the linkage rod 2; the slide rail is fixedly mounted on the linkage frame.

2. According to claim 1, the MPP cable protection tube processing equipment is characterized in that: A fixing block is fixedly mounted on the fixing rod.

3. According to claim 1, the MPP cable protection tube processing equipment is characterized in that: The adjusting assembly includes a bevel gear set, and a lead screw 1 which is arranged corresponding to the support rod and radially installed on the support frame; the support rod is threadedly connected with the corresponding lead screw 1; the bevel gear set includes an input bevel gear rotatably installed on the support frame, and an output bevel gear coaxially fixedly installed on the lead screw 1 and meshing with the input bevel gear.

4. The MPP cable protection tube processing equipment according to claim 3 is characterized in that: The input bevel gear is driven to rotate by the connecting port or the control motor.

5. The MPP cable protection tube processing equipment according to claim 1 or 3, characterized in that: A supporting roller is rotatably mounted on the outer end of the supporting rod.

6. The MPP cable protection tube processing equipment according to claim 1, characterized in that: The connecting assembly includes a linkage disk rotatably mounted on a support frame, and a clamping rod radially sliding and elastically mounted on the support frame and slidably connected to the linkage disk; a clamping hole is provided on the electric heater corresponding to the clamping rod; the linkage disk is intermittently slidably connected to the support rod.

7. The MPP cable protection tube processing equipment according to claim 1, characterized in that: The heating and expanding device also includes a servo screw installed in the mounting rod, and the sliding cylinder is threadedly connected to the servo screw.

8. The MPP cable protection tube processing equipment according to claim 1 or 7, characterized in that: The heating expansion device also includes a second lead screw corresponding to the expansion punch block; the second lead screw is radially mounted on the rotating frame, and the expansion punch block is threadedly connected to the second lead screw.

9. The MPP cable protection tube processing equipment according to claim 1 or 7, characterized in that: The heating and expanding device also includes a rotating assembly, which includes a servo motor fixedly mounted on the sliding cylinder, a driving gear coaxially fixedly connected to the output end of the servo motor, and a driven gear ring coaxially fixedly mounted on the rotating frame and meshing with the driving gear.

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