A heating device and method for a heat fusion joint of an anti-deformation uniform heating cable

Abstract

The present invention discloses a heating device and method for a deformation-proof and uniformly heated cable fusion joint. The present invention relates to the technical field of heating cable fusion joints. A positioning mechanism for positioning the cable fusion joint and a clamping mechanism for clamping the cable fusion joint are provided on a backing plate; a left heating mechanism and a right heating mechanism for uniformly heating two cables respectively are further provided on the backing plate. The left heating mechanism and the right heating mechanism are respectively located on the left and right sides of the positioning mechanism. The right heating mechanism includes a column fixed on the backing plate and a double-acting oil cylinder longitudinally arranged on the top surface of the column. Connection frames are fixed on the two piston rods of the double-acting oil cylinder, and heating molds are welded on the left ends of the two connection frames. The beneficial effects of the present invention are: it can uniformly heat two cables and greatly improve the fusion quality of the cable fusion joint and the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of heating cable fusion joints, and particularly to a heating device and method for preventing deformation and uniformly heating cable fusion joints. Background Art

[0002] The cable casting fusion joint technology is a new type of power cable connection technology. The cable casting fusion joint technology mainly solves the interface generated during the connection of two cables due to different insulating materials, thereby basically restoring the physical structure and intrinsic electrical properties of the original cable.

[0003] The principle of the cable casting fusion joint technology for butting two cables 1 together is as follows: Workers first form a cable fusion joint 2 between two cables 1 with an outer diameter of 6 - 8 cm, as Figures 1 to 2 shown; then heat the two cables 1 simultaneously. When the cables 1 are heated, the cables 1 transfer the heat on them to the cable fusion joint 2. When the cable fusion joint 2 is heated, the cable fusion joint 2 fuses with the two cables 1 into one body, thereby forming a complete and usable cable line.

[0004] Among them, the heating process of the cable fusion joint 2 is an important link in the entire butting process. A certain workshop uses a heating device as Figure 3 shown to heat the cable fusion joint 2. The heating device includes two machine platforms 4 fixed on a bottom plate 3. Lower heating plates 5 are fixedly arranged on the top surfaces of the two machine platforms 4. Supports 6 are arranged directly above the two lower heating plates 5. Air cylinders 7 are fixedly arranged on the top surfaces of the two supports 6. The piston rods of the air cylinders 7 penetrate through the supports 6, and upper heating plates 8 are fixedly arranged on the extending ends. The upper heating plates 8 are located directly above the lower heating plates 5.

[0005] The method for heating the cable fusion joint 2 by this heating device is as follows:

[0006] S1. Workers place the left cable 1 flat on the left lower heating plate 5. At the same time, place the right cable 1 flat on the right lower heating plate 5, as Figure 4 shown;

[0007] S2. Control the piston rods of the two air cylinders 7 to extend downward. The piston rods drive the upper heating plates 8 to move downward. When the upper heating plates 8 come into contact with the top surfaces of the cables 1, as Figure 5 shown, control the air cylinders 7 to close;

[0008] S3. Energize the upper heating plate 8 and the lower heating plate 5. Heat is generated on both the upper heating plate 8 and the lower heating plate 5. The upper heating plate 8 heats the top surface of the cable 1. At the same time, the lower heating plate 5 heats the bottom surface of the cable 1. When the cable 1 is heated, the cable 1 transfers the heat on it to the cable splice joint 2. When the cable splice joint 2 is heated, the cable splice joint 2 fuses with the two cables 1 into one body, and then a complete and usable cable is formed.

[0009] S4. Removal of the cable: The worker retracts the piston rods of the two cylinders 7 upward. The piston rods drive the upper heating plate 8 to move upward. After the upper heating plate 8 is reset, the worker removes the formed cable from the two lower heating plates 5.

[0010] However, although this heating device can heat the cable splice joint 2, there are still the following technical defects in terms of technology:

[0011] I. There are arc-shaped protrusions 9 on the top surface of the cable 1. The arc-shaped protrusions 9 block the downward movement of the upper heating plate 8, which causes the upper heating plate 8 not to heat the materials on the left and right sides of the arc-shaped protrusions 9, resulting in uneven heating of the cable 1. Consequently, the cable splice joint 2 is unevenly heated, and the cable splice joint 2 is not firmly fused with the cable 1, thereby reducing the fusion quality between the cable splice joint 2 and the cable 1.

[0012] In addition, there are concave grooves 10 on the bottom surface of the cable 1. The lower heating plate 5 can only heat the materials on the left and right sides of the concave grooves 10, and cannot heat the bottom of the concave grooves 10. Similarly, this causes uneven heating of the cable 1, resulting in uneven heating of the cable splice joint 2, and the cable splice joint 2 is not firmly fused with the cable 1, further reducing the fusion quality between the cable splice joint 2 and the cable 1.

[0013] II. When the cable splice joint 2 is heated, its outer surface expands and deforms outward [while the process requires that the heated cable splice joint 2 does not deform], thus reducing the fusion quality between the cable splice joint 2 and the cable 1.

[0014] Therefore, there is an urgent need for a heating device and method that can uniformly heat two cables and greatly improve the fusion quality between the cable splice joint and the cable. Summary of the Invention

[0015] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a heating device and method for uniformly heating two cables and greatly improving the fusion quality between the cable splice joint and the cable, which can prevent deformation and uniformly heat the cable splice joint.

[0016] The object of the present invention is achieved by the following technical solutions: A heating device for preventing deformation and uniformly heating a cable fusion joint, which includes a backing plate, and a positioning mechanism for positioning the cable fusion joint and a clamping mechanism for clamping the cable fusion joint are arranged on the backing plate;

[0017] The positioning mechanism includes a vertical plate fixed on the backing plate and a positioning seat fixed on the top surface of the vertical plate. A horizontally arranged lower arc groove is formed on the top surface of the positioning seat, and the lower arc groove is matched with the outer contour of the lower half of the cable fusion joint;

[0018] The clamping mechanism includes a frame fixed on the backing plate and located at the rear side of the vertical plate, and a vertical oil cylinder fixed on the top wall of the frame. The piston rod of the vertical oil cylinder penetrates downward through the top wall of the frame, and a clamping seat is fixed on the extending end. A horizontally arranged upper arc groove is formed on the bottom surface of the clamping seat, and the upper arc groove is located directly above the lower arc groove and is matched with the outer contour of the upper half of the cable fusion joint;

[0019] The backing plate is also provided with a left heating mechanism and a right heating mechanism for uniformly heating two cables respectively. The left heating mechanism and the right heating mechanism are respectively located on the left and right sides of the positioning mechanism. The right heating mechanism includes a column fixed on the backing plate and a double-acting oil cylinder longitudinally arranged on the top surface of the column. Connecting frames are fixed on the two piston rods of the double-acting oil cylinder, and heating molds are welded on the left ends of the two connecting frames;

[0020] The heating mold located at the rear side includes a semi-circular heat conduction cylinder with an opening facing forward. The right end of the semi-circular heat conduction cylinder is fixed on the right end of the connecting frame. A plurality of heating rods arranged at intervals are fixed on the semi-circular heat conduction cylinder along its circumference. The joint of each heating rod is connected to a power supply. A heat conduction column arranged horizontally at intervals is arranged between every two adjacent heating rods, and the distance between every two adjacent heat conduction columns is equal. The heat conduction column radially slides through the semi-circular heat conduction cylinder, the inner end of the heat conduction column extends into the opening of the semi-circular heat conduction cylinder, a round head is fixed on the outer end of the heat conduction column, and a spring is sleeved on the heat conduction column. One end of the spring is fixed on the outer cylindrical surface of the semi-circular heat conduction cylinder, and the other end is fixed on the round head.

[0021] The left heating mechanism and the right heating mechanism are symmetrically arranged about the positioning mechanism left and right.

[0022] The front heating mold and the rear heating mold of the right heating mechanism are symmetrically arranged about the positioning mechanism front and back.

[0023] One end of the connecting frame is welded to the acting end of the piston rod of the double-acting oil cylinder, and the other end is welded to the right end of the semi-circular heat conduction cylinder.

[0024] The plurality of heating rods in the semi-circular heat conduction cylinder are evenly distributed in the semi-circular heat conduction cylinder.

[0025] An axial hole is provided in the semi-circular heat conducting cylinder along its axial direction, and the heating rod is embedded in the axial hole.

[0026] A radial hole is provided on the cylindrical surface of the semi-circular heat conducting cylinder in the radial direction. The radial hole has the same diameter as the heat conducting column, and the heat conducting column is slidably installed in the radial hole.

[0027] The heating device further includes a controller, and the controller is electrically connected to the vertical oil cylinder and the double-acting oil cylinder via signal lines.

[0028] A heating method for an anti-deformation uniform heating cable joint includes the following steps:

[0029] S1. Workers embed the cable joint from top to bottom into the lower arc-shaped groove of the positioning seat of the positioning mechanism. Since the lower arc-shaped groove matches the outer contour of the lower half of the cable joint, the positioning of the cable joint is achieved. At this time, the cable on the left side of the cable joint is just between the two heating molds of the left heating mechanism, and the cable on the right side of the cable joint is just between the two heating molds of the right heating mechanism.

[0030] S2. Control the piston rod of the vertical oil cylinder of the clamping mechanism to extend downward. The piston rod drives the clamping seat to move downward, and the clamping seat drives the upper arc-shaped groove therein to move synchronously towards the cable joint. When the piston rod of the vertical oil cylinder is fully extended, the clamping seat and the positioning seat are closed. At this time, the cable joint is just restricted between the upper arc-shaped groove and the lower arc-shaped groove.

[0031] S3. Simultaneously heat the left cable and the right cable. The specific operation steps are as follows:

[0032] S31. Control the two piston rods of the double-acting oil cylinders of the left heating mechanism and the right heating mechanism to retract simultaneously. The two piston rods respectively drive the connecting frames connected thereto to move towards the cable direction. The connecting frames drive the semi-circular heat conducting cylinders of the heating molds to move towards the cable direction. The semi-circular heat conducting cylinders drive the respective heat conducting columns and springs thereon to move towards the cable direction synchronously.

[0033] When the two heating molds are closed, the two semi-circular heat conducting cylinders hold the cable. Since each heat conducting column can float radially under the elastic force of the spring, the inner ends of each heat conducting column can adaptively contact the outer surface of the cable.

[0034] S32. The worker turns on the power supply, which energizes each heating rod inside the semi-circular heat conducting cylinder. After the heating rod is energized, heat is generated on it, and the heat is transferred to the semi-circular heat conducting cylinder. The semi-circular heat conducting cylinder then transfers the heat to each heat conducting column on it, and the heat conducting column transfers the heat to the surface of the cable. The cable transfers the heat on it to the cable fusion joint. When the cable fusion joint is heated, it gradually fuses with the two cables into one body. After heating for a period of time, the power supply is turned off, thus finally forming a complete and usable cable;

[0035] S4. Removal of the cable, and its specific operation steps are as follows:

[0036] S41. Control the two piston rods of the double-acting oil cylinders of the left heating mechanism and the right heating mechanism to extend simultaneously. The two piston rods respectively drive the connecting frames connected to them to move away from the cable. The connecting frames drive the semi-circular heat conducting cylinder of the heating mold to move away from the cable. The semi-circular heat conducting cylinder drives each heat conducting column and the spring on it to move away from the cable synchronously;

[0037] S42. Control the piston rod of the vertical oil cylinder of the clamping mechanism to retract upward. The piston rod drives the clamping seat to move upward. Then the worker removes the cable fusion joint of the cable from the lower arc-shaped groove of the positioning seat;

[0038] S5. Repeat the operations of steps S1 to S4 in this way, and the cable can be continuously heated, and multiple complete and usable cables can be formed.

[0039] The present invention has the following advantages: It can uniformly heat the two cables and greatly improve the fusion quality between the cable fusion joint and the cable. Description of the Drawings

[0040] Figure 1 It is a schematic diagram for forming a cable fusion joint between two cables;

[0041] Figure 2 It is Figure 1 the front view of

[0042] Figure 3 It is a structural schematic diagram of an existing heating device;

[0043] Figure 4 It is a schematic diagram of placing the two cables flat on the top surfaces of the two lower heating plates respectively;

[0044] Figure 5 It is a schematic diagram of the upper heating plate contacting the top surface of the cable;

[0045] Figure 6 It is an axonometric view of the present invention;

[0046] Figure 7 It isFigure 6 Front view;

[0047] Figure 8 is Figure 6 Top view;

[0048] Figure 9 Axonometric view of the positioning mechanism;

[0049] Figure 10 Axonometric view of the clamping mechanism;

[0050] Figure 11 Axonometric view of the clamping seat;

[0051] Figure 12 Axonometric view of the right heating mechanism;

[0052] Figure 13 Axonometric view of the heating mold;

[0053] Figure 14 is Figure 13 Rear view;

[0054] Figure 15 is Figure 13 Front view;

[0055] Figure 16 is Figure 15 Partial schematic diagram;

[0056] Figure 17 Schematic diagram for positioning the cable fusion joint;

[0057] Figure 18 Schematic diagram of the closing of the clamping seat and the positioning seat;

[0058] Figure 19 Schematic diagram of the movement of the semi-circular heat conducting cylinder of the heating mold towards the cable;

[0059] Figure 20 Physical diagram of the heating mold;

[0060] In the figure:

[0061] 1 - Cable, 2 - Cable fusion joint, 3 - Base plate, 4 - Machine table, 5 - Lower heating plate, 6 - Bracket, 7 - Cylinder, 8 - Upper heating plate, 9 - Arc-shaped protrusion, 10 - Concave groove;

[0062] 11 - Cushion plate, 12 - Positioning mechanism, 13 - Clamping mechanism, 14 - Vertical plate, 15 - Positioning seat, 16 - Lower arc-shaped groove, 17 - Frame, 18 - Vertical oil cylinder, 19 - Clamping seat, 20 - Upper arc-shaped groove, 21 - Left heating mechanism, 22 - Right heating mechanism, 23 - Column, 24 - Double-acting oil cylinder, 25 - Connecting frame;

[0063] 26 - Heating die, 27 - Semi - circular heat - conducting cylinder, 28 - Heating rod, 30 - Heat - conducting column, 31 - Round head, 32 - Spring, 33 - Axial hole. Detailed implementation mode

[0064] The following further describes the present invention in conjunction with the attached drawings. The protection scope of the present invention is not limited to the following:

[0065] As Figures 6 to 16 shown, a heating device for an anti - deformation and uniformly heated cable splice joint includes a backing plate 11. A positioning mechanism 12 for positioning the cable splice joint 2 and a clamping mechanism 13 for clamping the cable splice joint 2 are provided on the backing plate 11;

[0066] The positioning mechanism 12 includes a vertical plate 14 fixed on the backing plate 11 and a positioning seat 15 fixed on the top surface of the vertical plate 14. A horizontally arranged lower arc - shaped groove 16 is formed on the top surface of the positioning seat 15, and the lower arc - shaped groove 16 is matched with the outer contour of the lower half of the cable splice joint 2.

[0067] The clamping mechanism 13 includes a frame 17 fixed on the backing plate 11 and located at the rear side of the vertical plate 14, and a vertical oil cylinder 18 fixed on the top wall of the frame 17. The piston rod of the vertical oil cylinder 18 penetrates downward through the top wall of the frame 17, and a clamping seat 19 is fixed on the extending end. A horizontally arranged upper arc - shaped groove 20 is formed on the bottom surface of the clamping seat 19. The upper arc - shaped groove 20 is located directly above the lower arc - shaped groove 16, and the upper arc - shaped groove 20 is matched with the outer contour of the upper half of the cable splice joint 2.

[0068] The backing plate 11 is also provided with a left heating mechanism 21 and a right heating mechanism 22 for uniformly heating the two cables 1 respectively. The left heating mechanism 21 and the right heating mechanism 22 are symmetrically arranged about the positioning mechanism 12 left - and - right. The left heating mechanism 21 and the right heating mechanism 22 are respectively located on the left and right sides of the positioning mechanism 12. The right heating mechanism 22 includes a column 23 fixed on the backing plate 11 and a double - acting oil cylinder 24 fixed on the top surface of the column 23 and arranged longitudinally. Connecting frames 25 are fixed on the two piston rods of the double - acting oil cylinder 24, and heating dies 26 are welded on the left ends of the two connecting frames 25; The front - side heating die 26 and the rear - side heating die 26 of the right heating mechanism 22 are symmetrically arranged about the positioning mechanism 12 front - and - rear.

[0069] The heating die 26 located at the rear side includes a semi-circular heat conduction cylinder 27 with an opening facing forward. The right end of the semi-circular heat conduction cylinder 27 is fixedly arranged on the right end of the connecting frame 25. A plurality of heating rods 28 arranged at intervals are fixedly arranged along the circumference of the semi-circular heat conduction cylinder 27. The plurality of heating rods 28 in the semi-circular heat conduction cylinder 27 are evenly distributed in the semi-circular heat conduction cylinder 27. The joint of each heating rod 28 is connected to a power supply. A heat conduction column 30 arranged horizontally at intervals is arranged between every two adjacent heating rods 28. The distance between every two adjacent heat conduction columns 30 is equal. The heat conduction column 30 radially slides through the semi-circular heat conduction cylinder 27. The inner end of the heat conduction column 30 extends into the opening of the semi-circular heat conduction cylinder 27. A round head 31 is fixedly arranged on the outer end of the heat conduction column 30. A spring 32 is sleeved on the heat conduction column 30. One end of the spring 32 is fixedly arranged on the outer cylindrical surface of the semi-circular heat conduction cylinder 27, and the other end is fixedly arranged on the round head 31.

[0070] One end of the connecting frame 25 is welded to the acting end of the piston rod of the double-acting oil cylinder 24, and the other end is welded to the right end of the semi-circular heat conduction cylinder 27. An axial hole 33 arranged along the axial direction is opened in the semi-circular heat conduction cylinder 27. The heating rod 28 is embedded in the axial hole 33. A radial hole is opened on the cylindrical surface of the semi-circular heat conduction cylinder 27. The diameter of the radial hole is equal to that of the heat conduction column 30. The heat conduction column 30 is slidably installed in the radial hole.

[0071] This heating device further includes a controller. The controller is electrically connected to the vertical oil cylinder 18 and the double-acting oil cylinder 24 through signal lines. Workers can extend or retract the piston rods of the vertical oil cylinder 18 and the double-acting oil cylinder 24 through the controller, which facilitates the operation of the workers and has the characteristics of high automation.

[0072] A heating method for preventing deformation and uniformly heating a cable fusion joint includes the following steps:

[0073] S1. Workers embed the cable fusion joint 2 into the lower arc-shaped groove 16 of the positioning seat 15 of the positioning mechanism 12 from top to bottom. Since the lower arc-shaped groove 16 matches the outer contour of the lower half of the cable fusion joint 2, the positioning of the cable fusion joint 2 is realized. As shown in the figure, at this time, the cable 1 located on the left side of the cable fusion joint 2 is just between the two heating dies 26 of the left heating mechanism 21, and the cable 1 located on the right side of the cable fusion joint 2 is just between the two heating dies 26 of the right heating mechanism 22; Figure 17 shown in the figure, at this time, the cable 1 located on the left side of the cable fusion joint 2 is just between the two heating dies 26 of the left heating mechanism 21, and the cable 1 located on the right side of the cable fusion joint 2 is just between the two heating dies 26 of the right heating mechanism 22;

[0074] S2. Control the piston rod of the vertical oil cylinder 18 of the clamping mechanism 13 to extend downward. The piston rod drives the clamping seat 19 to move downward. The clamping seat 19 drives the upper arc-shaped groove 20 inside it to move synchronously towards the direction of the cable fusion joint 2. When the piston rod of the vertical oil cylinder 18 is fully extended, the clamping seat 19 and the positioning seat 15 are closed. As shown in the figure, Figure 18As shown, at this time, the cable fusion joint 2 is just restricted between the upper arc-shaped groove 20 and the lower arc-shaped groove 16;

[0075] S3. Simultaneous heating of the left cable 1 and the right cable 1, and its specific operation steps are as follows:

[0076] S31. Control the two piston rods of the double-acting oil cylinder 24 of the left heating mechanism 21 and the right heating mechanism 22 to retract simultaneously. The two piston rods respectively drive the connecting frames 25 connected to them to move towards the cable 1. The connecting frames 25 drive the semi-circular heat conduction cylinders 27 of the heating molds 26 to move towards the cable 1. As Figure 19 shown, the semi-circular heat conduction cylinders 27 drive the respective heat conduction columns 30 and springs 32 on them to move towards the cable 1 synchronously;

[0077] After the two heating molds 26 are closed, the two semi-circular heat conduction cylinders 27 hold the cable 1. Since each heat conduction column 30 can float radially under the elastic force of the spring 32, the inner ends of each heat conduction column 30 can adaptively contact the outer surface of the cable 1;

[0078] S32. The worker turns on the power supply, and the power supply energizes each heating rod 28 in the semi-circular heat conduction cylinder 27. When the heating rod 28 is energized, heat is generated on it. The heat is transferred to the semi-circular heat conduction cylinder 27, and the semi-circular heat conduction cylinder 27 then transfers the heat to the respective heat conduction columns 30 on it. The heat conduction columns 30 transfer the heat to the surface of the cable 1, and the cable 1 transfers the heat on it to the cable fusion joint 2. When the cable fusion joint 2 is heated, the cable fusion joint 2 gradually fuses with the two cables 1 into one. After heating for a period of time, the power supply is turned off, thus finally forming a complete and usable cable;

[0079] Among them, it can be seen from steps S31 to S32 that since the inner ends of each heat conduction column 30 can adaptively contact the outer surface of the cable 1, therefore, the inner ends of a part of the heat conduction columns 30 not only contact the arc-shaped protrusion 9 of the cable 1, but also contact the materials on the left and right sides of the arc-shaped protrusion 9; at the same time, the inner ends of another part of the heat conduction columns 30 not only contact the bottom of the concave groove 10, but also contact the materials on the left and right sides of the concave groove 10. Therefore, when the heating rod 28 is energized, the heat conduction columns 30 in contact with the arc-shaped protrusion 9 can transfer heat to the arc-shaped protrusion 9. At the same time, the heat conduction columns 30 in contact with the bottom of the concave groove 10 can transfer heat to the bottom of the concave groove 10, thereby ensuring that the two cables 1 are evenly heated, and further ensuring that the cable fusion joint 2 is evenly heated, so that the cable fusion joint 2 can be firmly fused with the cable 1. Compared with the heating device as Figures 3 to 5 shown, the fusion quality of the cable fusion joint 2 and the cable 1 is greatly improved.

[0080] S4. Removal of the cable. The specific operation steps are as follows:

[0081] S41. Control the two piston rods of the double-acting oil cylinder 24 of the left heating mechanism 21 and the right heating mechanism 22 to extend simultaneously. The two piston rods respectively drive the connecting frames 25 connected thereto to move away from the cable 1. The connecting frames 25 drive the semi-circular heat conduction cylinders 27 of the heating molds 26 to move away from the cable 1. The semi-circular heat conduction cylinders 27 drive the respective heat conduction columns 30 and springs 32 thereon to move away from the cable 1 synchronously;

[0082] S42. Control the piston rod of the vertical oil cylinder 18 of the clamping mechanism 13 to retract upward. The piston rod drives the clamping seat 19 to move upward. Then, the worker removes the cable splice joint 2 of the cable from the lower arc-shaped groove 16 of the positioning seat 15;

[0083] S5. Repeat the operations of steps S1 to S4 in this way, and the cable 1 can be continuously heated, and multiple complete and usable cable lines can be formed.

[0084] Among them, it can be seen from steps S1 to S2 that since the cable splice joint 2 is always restricted between the upper arc-shaped groove 20 and the lower arc-shaped groove 16, when the cable splice joint 2 is heated, its expansion and deformation are restricted, thus playing a good role in protecting the cable splice joint 2. It can be seen that compared with the heating device as Figures 3 to 5 shown, the fusion quality of the cable splice joint 2 and the cable 1 is further improved.

[0085] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating device for uniformly heating a cable fusion joint with an anti-deformation function, characterized in that: It comprises a backing plate (11), on which a positioning mechanism (12) for positioning the cable fusion joint (2) and a clamping mechanism (13) for clamping the cable fusion joint (2) are provided; The positioning mechanism (12) comprises a vertical plate (14) fixedly mounted on the backing plate (11), and a positioning seat (15) fixedly mounted on the top surface of the vertical plate (14); a horizontally arranged lower arc groove (16) is formed on the top surface of the positioning seat (15); the lower arc groove (16) matches the outer contour of the lower half of the cable fusion joint (2); The clamping mechanism (13) comprises a frame (17) fixedly mounted on the backing plate (11) and located at the rear side of the vertical plate (14), and a vertical oil cylinder (18) fixedly mounted on the top wall of the frame (17); a piston rod of the vertical oil cylinder (18) penetrates downward through the top wall of the frame (17), and a clamping seat (19) is fixedly mounted on the extended end; a horizontally arranged upper arc groove (20) is formed on the bottom surface of the clamping seat (19); the upper arc groove (20) is located directly above the lower arc groove (16), and the upper arc groove (20) matches the outer contour of the upper half of the cable fusion joint (2); The pad (11) is also provided with a left heating mechanism (21) and a right heating mechanism (22) for uniformly heating the two cables (1) respectively. The left heating mechanism (21) and the right heating mechanism (22) are respectively located on the left and right sides of the positioning mechanism (12). The right heating mechanism (22) comprises a column (23) fixedly mounted on the pad (11), and a double-acting oil cylinder (24) fixedly mounted on the top surface of the column (23) and arranged longitudinally. A connecting frame (25) is fixedly mounted on the two piston rods of the double-acting oil cylinder (24). A heating mold (26) is welded to the left ends of the two connecting frames (25). The heating mold (26) located at the rear side includes a semicircular heat-conducting tube (27) with an opening facing forward. The right end of the semicircular heat-conducting tube (27) is fixed to the right end of the connecting frame (25). A plurality of heating rods (28) arranged at intervals are fixed in the semicircular heat-conducting tube (27) along its circumference. The joint of each heating rod (28) is connected to a power source. A heat-conducting column (30) arranged at intervals is arranged between each two adjacent heating rods (28). The spacing between two adjacent heat-conducting columns (30) is equal. The heat-conducting columns (30) radially slide through the semicircular heat-conducting tube (27). The inner end of the heat-conducting column (30) extends into the opening of the semicircular heat-conducting tube (27). A round head (31) is fixedly provided on the outer end of the heat-conducting column (30). A spring (32) is sleeved on the heat-conducting column (30). One end of the spring (32) is fixedly provided on the outer cylindrical surface of the semicircular heat-conducting tube (27), and the other end is fixedly provided on the round head (31).

2. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 1, characterized in that: The left heating mechanism (21) and the right heating mechanism (22) are arranged symmetrically with respect to the positioning mechanism (12).

3. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 2, characterized in that: The front heating mold (26) and the rear heating mold (26) of the right heating mechanism (22) are arranged symmetrically front and back with respect to the positioning mechanism (12).

4. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 3, characterized in that: One end of the connecting frame (25) is welded to the working end of the piston rod of the double-acting oil cylinder (24), and the other end is welded to the right end of the semicircular heat-conducting cylinder (27).

5. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 4, characterized in that: The plurality of heating rods (28) in the semicircular heat-conducting tube (27) are evenly distributed in the semicircular heat-conducting tube (27).

6. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 5, characterized in that: An axial hole (33) arranged along the axial direction of the semicircular heat-conducting cylinder (27) is provided in the semicircular heat-conducting cylinder (27), and the heating rod (28) is embedded in the axial hole (33).

7. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 6, characterized in that: A radial hole arranged radially is provided on the cylindrical surface of the semicircular heat-conducting cylinder (27), the radial hole has the same diameter as the heat-conducting column (30), and the heat-conducting column (30) is slidably mounted in the radial hole.

8. The heating device for the anti-deformation uniformly heated cable fusion joint according to claim 7, characterized in that: The heating device also includes a controller, which is electrically connected to the vertical oil cylinder (18) and the double-acting oil cylinder (24) via a signal line.

9. A method for heating a deformation-proof uniformly heated cable fusion joint, using the heating device for a deformation-proof uniformly heated cable fusion joint according to claim 8, characterized in that: It includes the following steps: S1. The worker inserts the cable fusion joint (2) from top to bottom into the lower arc groove (16) of the positioning seat (15) of the positioning mechanism (12). Since the lower arc groove (16) matches the outer contour of the lower half of the cable fusion joint (2), the cable fusion joint (2) is positioned. At this time, the cable (1) located on the left side of the cable fusion joint (2) is just located between the two heating molds (26) of the left heating mechanism (21), and the cable (1) located on the right side of the cable fusion joint (2) is just located between the two heating molds (26) of the right heating mechanism (22); S2, controlling the piston rod of the vertical oil cylinder (18) of the clamping mechanism (13) to extend downward, the piston rod drives the clamping seat (19) to move downward, and the clamping seat (19) drives the upper arc groove (20) therein to move synchronously toward the cable fusion joint (2). When the piston rod of the vertical oil cylinder (18) is fully extended, the clamping seat (19) and the positioning seat (15) are closed, and at this time, the cable fusion joint (2) is just confined between the upper arc groove (20) and the lower arc groove (16); S3: heating the left cable (1) and the right cable (1) simultaneously. The specific operation steps are as follows: S31, controlling the two piston rods of the double-acting oil cylinder (24) of the left heating mechanism (21) and the right heating mechanism (22) to retract simultaneously, the two piston rods respectively drive the connecting frame (25) connected thereto to move toward the direction of the cable (1), the connecting frame (25) drives the semicircular heat-conducting cylinder (27) of the heating mold (26) to move toward the direction of the cable (1), and the semicircular heat-conducting cylinder (27) drives the various heat-conducting columns (30) and springs (32) thereon to move synchronously toward the direction of the cable (1); When the two heating molds (26) are closed, the two semicircular heat-conducting cylinders (27) hold the cable (1), and because each heat-conducting column (30) can float radially under the elastic force of the spring (32), the inner end of each heat-conducting column (30) can adaptively contact the outer surface of the cable (1); S32, the worker turns on the power supply, and the power supply energizes each heating rod (28) in the semicircular heat-conducting cylinder (27). When the heating rod (28) is energized, heat is generated on it, and the heat is transferred to the semicircular heat-conducting cylinder (27). The semicircular heat-conducting cylinder (27) then transfers the heat to each heat-conducting column (30) thereon. The heat-conducting column (30) transfers the heat to the surface of the cable (1). The cable (1) transfers the heat on it to the cable fusion joint (2). When the cable fusion joint (2) is heated, the cable fusion joint (2) gradually fuses with the two cables (1) into one. After heating for a period of time, the power supply is turned off, thereby finally forming a complete and usable cable line; S4. Remove the cable. The specific steps are as follows: S41, controlling the two piston rods of the double-acting oil cylinder (24) of the left heating mechanism (21) and the right heating mechanism (22) to extend simultaneously, the two piston rods respectively drive the connecting frame (25) connected thereto to move in a direction away from the cable (1), the connecting frame (25) drives the semicircular heat-conducting cylinder (27) of the heating mold (26) to move in a direction away from the cable (1), and the semicircular heat-conducting cylinder (27) drives the various heat-conducting columns (30) and springs (32) thereon to move synchronously in a direction away from the cable (1); S42, the piston rod of the vertical oil cylinder (18) of the clamping mechanism (13) is controlled to retract upward, and the piston rod drives the clamping seat (19) to move upward, and then the worker removes the cable fusion joint (2) of the cable line from the lower arc groove (16) of the positioning seat (15); S5. By repeating the operations of steps S1 to S4, the cable (1) can be continuously heated, and a plurality of complete and usable cables can be formed.

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