CN115275735A - Automatic cable welding device - Google Patents

Abstract

The invention belongs to the technical field of cable welding connection, and particularly relates to an automatic cable welding device which can automatically tighten a cable core of a cable, is convenient to operate and is convenient to weld the cable. The device includes frame and breach ring rail, and the slip is equipped with the breach ring rail in the frame, is equipped with the opening that is used for the cable activity on the breach ring rail to make the cable that the welding was accomplished follow the opening part is taken out, still includes arc rail, stranding mechanism and heating mechanism, the breach ring rail opening part swing joint has the arc rail, and the arc rail constitutes complete ring guide rail with the breach ring rail is closed, the movable stranding mechanism that is used for twining the cable core that is equipped with two on the ring guide rail. The cable core of the cable is automatically screwed down through the stranding mechanism, manual winding is not needed, operation is convenient, and then the cable core of the cable is heated through the heating block, so that the cable is convenient to weld.

Description

Automatic cable welding device

Technical Field

The invention belongs to the technical field of cable welding connection, and relates to an automatic cable welding device.

Background

The cable connection is always an operation with high technical requirements and large workload, because the connection steps are multiple, workers spend more time in connection, the welding is a better one in the cable connection modes, when the cable is welded and connected, cable cores of the cable need to be wound together firstly, then the wound cable cores are heated, and the tin strips are used for contacting the heated cable cores, so as to carry out the welding.

Patent grant publication No. CN210306373U, a welding set for cable processing that the bulletin date is 20200414 discloses, the device places two cables that need to be processed about both ends at the operation panel upper surface earlier when using, then push down the cable core upper surface in the cable through the clamp plate, make cable core and operation panel closely laminate, thereby fix the cable core, two cable cores are welded to the molten welding liquid that the soldered connection that rethread external connection came out, this kind of welding mode does not twine two cable cores of cable together, also can't make the cable core of two cables twine automatically, the cable core is hugged closely inadequately, consequently, be unfavorable for the inflow of tin liquid at the in-process of carrying out the welding, also can influence the transmission of signal simultaneously, be not convenient for the welding operation of cable, limitation has.

According to the defects in the prior art, the automatic cable welding device capable of automatically screwing the cable core and convenient to operate is designed.

Disclosure of Invention

In order to overcome the defects that the cable cores of two cables cannot be automatically wound together, the flowing of molten tin is not facilitated, the signal transmission is influenced, and the welding operation of the cables is inconvenient in the prior art, the invention aims to solve the technical problem of providing the automatic welding device for the cables, which can automatically tighten the cable cores of the cables and is convenient to operate.

In order to solve the technical problem, the invention provides an automatic cable welding device which comprises a rack and a notched ring rail, wherein the notched ring rail is arranged on the rack in a sliding manner, an opening for cable movement is formed in the notched ring rail, so that a welded cable can be taken out from the opening, the automatic cable welding device further comprises an arc rail, a stranding mechanism and a heating mechanism, the arc rail is movably connected to the opening of the notched ring rail, the arc rail and the notched ring rail are closed to form a complete ring guide rail, two stranding mechanisms for winding the cable are movably arranged on the ring guide rail, the heating mechanism for heating the cable is arranged on the notched ring rail, the temperature of the cable is increased to quickly melt a tin bar in contact with the cable, the cable is soldered, and the heating mechanism is positioned behind the stranding mechanism.

Preferably, stranding mechanism includes walking subassembly, clamp splice, regulating part and guide, be equipped with on the ring guide the walking subassembly, swing joint has the guide on the walking subassembly, and the rigid coupling has the clamp splice that is used for the centre gripping cable on the guide, be connected with the regulating part between walking subassembly and the clamp splice, regulating part and clamp splice swing joint, the guide play the guide effect when regulating part regulation clamp splice removes, and the regulating part is used for adjusting the clamp plate to the tight dynamics of clamp of cable to the realization is pressed from both sides tightly or is loosened the cable, walking subassembly can follow arc rail and breach ring rail combination formation circumference removal on the ring guide to make the cable carry out the winding connection.

Preferably, the walking assembly comprises an electric slider and a guide sleeve, the electric slider is arranged on the circular guide rail and can move along the circumferential direction of the circular guide rail, the guide sleeve is arranged on the electric slider and is connected with the guide sleeve in a sliding manner, one end, far away from the clamping block, of the adjusting piece penetrates into the guide sleeve, and the adjusting piece is in threaded connection with the guide sleeve.

Preferably, heating mechanism includes bracing piece, heating piece and opening and shutting piece, and the rear side of breach ring rail is connected with the bracing piece, and upper end of the support bar articulates there is the heating piece of two relative settings, and to the cable heating when two heating pieces are used for the soldering, is equipped with between heating piece and the bracing piece the opening and shutting piece, the opening and shutting piece is used for controlling opening and shutting of two heating pieces to make things convenient for the cable to put into two heating pieces or take out from between two heating pieces.

Preferably, the piece of opening and shutting includes slide bar, connecting rod and cylinder, and vertical spout has been seted up on bracing piece upper portion, the movable slide bar that is equipped with in the vertical spout, the connecting rod articulates to be connected between slide bar and heating piece, installs the cylinder on the bracing piece, and the telescopic link and the slide bar rigid coupling of cylinder, cylinder stretch out and draw back and control opening and shutting of two heating pieces through slide bar and connecting rod.

Preferably, still include guiding mechanism, guiding mechanism includes branch, reel and guide board, is equipped with branch on the breach circular rail, rotates on the branch to be equipped with the reel that is used for convoluteing the tin bar, and the clamp splice is close to one side of reel and is equipped with the guide board, offers on the guide board to be used for leading the bullport to the cable with the tin bar.

Preferably, still including pulling the drive mechanism on tin bar to the cable, drive mechanism includes motor, action wheel and follows the driving wheel, is equipped with the motor on the guide board and follows the driving wheel, follows the driving wheel and is connected with the guide board rotary type, is equipped with the action wheel on the output shaft of motor, action wheel and follow driving wheel are located respectively the both sides of bullport, action wheel and follow driving wheel are used for pulling tin bar to the cable on.

Preferably, the soldering flux device further comprises a smearing mechanism used for smearing soldering flux on the cable during soldering, the smearing mechanism comprises a rubber cylinder, a conveying pipe and a pressurizing assembly, the rubber cylinder used for loading the soldering flux is arranged on the guide sleeve, the discharging end of the rubber cylinder is communicated with the conveying pipe penetrating through the clamping block, the rubber cylinder is connected with the pressurizing assembly, and the pressurizing assembly is used for applying pressure to the interior of the rubber cylinder so that the soldering flux in the rubber cylinder is extruded out of the conveying pipe.

Preferably, the pressurizing assembly comprises an inflator, an elastic piece and a squeezing block, the front end of the rubber barrel is connected with the inflator, the elastic piece is arranged on the inflator, the squeezing block is arranged on the front end face of the gap ring rail, the inflator moves to squeeze the inflator to do work through the squeezing block, the elastic piece is used for resetting after the inflator does work, the inflator is enabled to suck air and discharge air in a reciprocating mode, and the discharged air is pushed into the rubber barrel to enable the soldering flux to be discharged and coated on the cable.

Preferably, the outer rings of the driving wheel and the driven wheel are provided with a circle of teeth, and friction force between the driving wheel and the tin bar is increased through the teeth.

On the basis of overcoming the defects of the prior art, the invention can also achieve the following beneficial effects:

1. the two cable cores to be connected are clamped through the wire twisting mechanism, the wire twisting mechanism is controlled to move along the circular guide rail, the two cable cores of the cables are wound together, the cable cores of the two cables are tightly attached, the initial connection of the cables is realized, the flowing of tin liquid in the welding process is facilitated, the arranged heating mechanism heats the cable cores, the cable cores of the cables are heated through the heating block, and the tin strips are melted after contacting the heated cable cores, so that the welding of the cables is facilitated;

2. the tin bar is coiled through the reel, and the tin bar is guided to the cable through the guide plate, so that an operator can conveniently use the tin bar for welding operation, and the practicability of the device is improved;

3. the motor is started to drive the driving wheel to rotate, so that the tin bar is pulled to the cable core of the cable, automatic tin bar conveying is realized, and the welding efficiency of the cable is improved;

4. when the cable core of cable is screwed up, the scaling powder in the rubber tube can flow into the cable core position clamped by the clamping block through the conveying pipe, so that the later welding operation is facilitated.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the wire twisting mechanism and the heating mechanism of the present invention;

FIG. 3 is a schematic perspective view of the wire twisting mechanism of the present invention;

FIG. 4 is a schematic perspective view of a heating mechanism of the present invention, wherein the supporting rod is a sectional view;

FIG. 5 is a perspective view of the guiding mechanism of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 5;

FIG. 7 is a schematic perspective view of a portion of the applicator mechanism of the present invention;

FIG. 8 is a schematic perspective view of the thread winding mechanism and the coating mechanism of the present invention;

fig. 9 is a schematic perspective view of the working state of the present invention.

The symbols in the drawings are: 1-frame, 2-notched circular rail, 3-arc rail, 4-stranding mechanism, 41-electric sliding block, 42-guide sleeve, 43-clamping block, 44-adjusting piece, 45-guiding piece, 5-heating mechanism, 51-supporting rod, 52-heating block, 53-sliding rod, 54-connecting rod, 55-air cylinder, 6-guiding mechanism, 61-supporting rod, 62-reel, 63-guiding plate, 7-traction mechanism, 71-motor, 72-driving wheel, 73-driven wheel, 8-smearing mechanism, 81-rubber cylinder, 82-conveying pipe, 83-inflator, 84-elastic piece, 85-extrusion block, 86-C type rod and 100-cable.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example 1

An automatic cable welding device is disclosed, as shown in fig. 1 and 9, and comprises a rack 1 and a notched ring rail 2, wherein the notched ring rail 2 is slidably connected on the rack 1, an opening for movement of a cable 100 is formed in the top of the notched ring rail 2, so that the welded cable 100 can be taken out from the opening, the automatic cable welding device further comprises an arc rail 3, a wire twisting mechanism 4 and a heating mechanism 5, the opening of the notched ring rail 2 is connected with the arc rail 3 through a hinge, the arc rail 3 and the notched ring rail 2 are closed to form a complete ring guide rail, the ring guide rail is movably provided with two wire twisting mechanisms 4 for winding the cable 100, the wire twisting mechanisms 4 wind the cable 100 to realize primary connection, the notched ring rail 2 is provided with a heating mechanism 5 for heating the cable 100, the heating mechanism 5 can also be used for fixing the cable 100 to be welded, the heating mechanism 5 is in contact with the surface of the cable 100, the heating mechanism 5 conducts heat to the cable 100, the cable 100 heats up to quickly melt a tin bar contacted with the cable 100, molten tin liquid flows into the surface of the cable 100 to realize soldering of the auxiliary cable 100, and the heating mechanism 5 is positioned right behind the wire twisting mechanism 4.

As shown in fig. 2 and 3, the wire twisting mechanism 4 includes a traveling assembly, a clamping block 43, an adjusting piece 44 and a guide piece 45, the traveling assembly includes an electric slider 41 and a guide sleeve 42, the electric slider 41 is disposed on the circular guide rail, the electric slider 41 can move along the circumferential direction of the circular guide rail, the guide sleeve 42 is mounted on the electric slider 41, the guide piece 45 is slidably connected on the guide sleeve 42, the clamping block 43 for clamping the cable core of the cable 100 is fixedly connected on the guide piece 45, the adjusting piece 44 is rotatably connected on the clamping block 43, the adjusting piece 44 is a threaded rod, one end of the adjusting piece 44 far away from the clamping block 43 penetrates into the guide sleeve 42, the adjusting piece 44 is in threaded connection with the guide sleeve 42, and the adjusting piece 44 is used for adjusting the clamping force of the clamping block 43 on the cable core of the cable 100, so as to clamp or loosen the cable core of the cable 100.

As shown in fig. 1, fig. 2 and fig. 4, the heating mechanism 5 includes a supporting rod 51, a heating block 52 and an opening and closing member, the supporting rod 51 is connected to the rear side of the notched ring rail 2, the upper end of the supporting rod 51 is hinged with two oppositely arranged heating blocks 52, and the two heating blocks 52 are used for heating the cable core of the cable 100 during soldering so as to rapidly melt a tin bar contacting with the cable core of the cable 100 and cover the winding part of the cable core of the cable 100; the opening and closing piece comprises a sliding rod 53, a connecting rod 54 and an air cylinder 55, the upper portion of the supporting rod 51 is provided with a vertically arranged sliding groove, the sliding rod 53 is movably arranged in the sliding groove, the sliding rod 53 can move up and down in the sliding groove, the connecting rod 54 is hinged between the sliding rod 53 and the heating block 52, the upper portion of the rear side of the supporting rod 51 is connected with the air cylinder 55, and the telescopic rod of the air cylinder 55 is connected with the sliding rod 53.

An operator can apply the corresponding technical scheme in the device to the technology of the cable welding device according to specific conditions, specifically, the device is connected with the cable 100 in a welding connection mode, when the device is required to be used for assisting the welding operation of the cable 100, firstly, the insulating layer at the head end of the cable 100 is stripped to expose the cable core of the cable 100, firstly, the air cylinder 55 is in a shortened state, the two heating blocks 52 are opened, the operator stacks the cable cores of the two cables 100 together and puts the cable cores of the two cables 100 between the two heating blocks 52 and between the two clamping blocks 43, the air cylinder 55 is started to extend, the sliding rod 53 moves upwards, the two heating blocks 52 are mutually closed to clamp the cable cores of the cable 100, the two adjusting pieces 44 are rotated, and because the adjusting pieces 44 are threaded rods, the two cable core clamping blocks 43 are driven to be closed towards the direction of the cable 100 when the two adjusting pieces 44 are rotated, the guide piece 45 plays a role of guiding, so that the two clamping blocks 43 clamp the cable cores of the cables 100 at the stacking part, the electric sliding blocks 41 at two sides are started to move along the circumferential direction of the circular guide rail formed by the arc-shaped rail 3 and the notched ring rail 2, the cable cores of the cables 100 are clamped by the two clamping blocks 43, the cable cores of the cables 100 are fixed by the two heating blocks 52, the clamping blocks 43 rotate along with the electric sliding blocks 41 to wind the cable cores of the two cables 100 together, after the cable cores of the cables 100 are wound, the electric sliding blocks 41 are closed, the adjusting piece 44 is rotated reversely to drive the two clamping blocks 43 to be far away from the cables 100, the cables 100 are loosened, the heating blocks 52 are started to heat the cable cores of the cables 100, the tin bars are tightly attached to the cable cores of the cables 100, the tin bars are melted by heat, the tin liquid permeates into and fills the gaps connected with the cable cores of the cables 100, the welding of the cables 100 is completed after the tin liquid is solidified, and after the welding of the cables 100 is completed, the starting cylinder 55 is shortened to pull the sliding rod 53 to move downwards, the two heating blocks 52 are opened, then the arc-shaped rail 3 is rotated clockwise, the welded cable 100 is moved upwards, and the cable 100 is taken out from the opening.

Example 2

On the basis of embodiment 1, as shown in fig. 1 and 5, the automatic cable welding device further includes a guide mechanism 6, the guide mechanism 6 includes a support rod 61, a reel 62 and a guide plate 63, the support rod 61 is connected to both ends of the notched ring rail 2, the reel 62 for winding the tin bar is rotatably connected to the support rod 61, the guide plate 63 is welded to one side of the clamp block 43 close to the reel 62, and a circular guide hole for guiding the tin bar to the core of the cable 100 is formed in the guide plate 63.

As shown in fig. 1 and 6, the tin bar cable pulling device further comprises a pulling mechanism 7 for pulling the tin bar to the cable core of the cable 100, wherein the pulling mechanism 7 comprises a motor 71, a driving wheel 72 and a driven wheel 73, the motor 71 and the driven wheel 73 are mounted on the guide plate 63, the driven wheel 73 is rotatably connected with the guide plate 63 through a bearing, the motor 71 and the driven wheel 73 are respectively located on two sides of the guide hole, the driving wheel 72 is connected to an output shaft of the motor 71, the driving wheel 72 and the driven wheel 73 are used for pulling the tin bar to the cable core of the cable 100, a circle of teeth are arranged on outer rings of the driving wheel 72 and the driven wheel 73, and friction force between the teeth and the tin bar is increased.

The operation people convolutes the tin bar to reel 62, when having heated the cable core of cable 100, the operation people stimulates the tin bar and passes from action wheel 72 and the clearance from between the driving wheel 73, make the tin bar pass guide board 63 again, guide board 63 plays the guide effect to the tin bar, make the tin bar remove toward cable 100 direction, starter motor 71 drive action wheel 72 is rotatory, action wheel 72 can draw the tin bar to cable core of cable 100 through the effect of frictional force on, with this effect that reaches automatic weld, the practicality of this device has been improved, the operation of operation people has also been made things convenient for simultaneously.

Example 3

Based on embodiment 2, as shown in fig. 1, 7 and 8, the automatic cable welding device further includes a smearing mechanism 8 for smearing soldering flux on the cable 100 during soldering, the smearing mechanism 8 includes a rubber tube 81, a delivery tube 82 and a pressurizing assembly, the front end of the guide sleeve 42 is connected with the rubber tube 81 for loading the soldering flux, the discharge end of the rubber tube 81 is communicated with the delivery tube 82 penetrating through the clamping block 43, the guide sleeve 42 and the adjusting member 44 are hollow, the delivery tube 82 penetrates through the hollow parts of the guide sleeve 42 and the adjusting member 44, the pressurizing assembly includes an inflator 83, an elastic member 84 and a squeezing block 85, the front end of the rubber tube 81 is connected with the inflator 83, the piston rod of the inflator 83 is connected with the C-shaped rod 86, the elastic member 84 is connected between the inflator 83 and the C-shaped rod 86, squeezing blocks 85 are respectively disposed on the left side and the right side of the front end face of the notched ring rail 2, the electric slider 41 moves to move the inflator 83 and the C-shaped rod 86, the extrados of the C-shaped rod 86 contacts with the squeezing block 85, the C-shaped rod 86 gradually drives the piston rod to move the inflator to squeeze the elastic member 84, the inflator 83 to push the cable 81 into the cable 100 to be separated from the squeezing block 85, and the cable 100 to be discharged from the cable core, and the smearing mechanism 8.

The soldering flux is injected into the rubber cylinder 81, the electric sliding block 41 drives the rubber cylinder 81 and all the components arranged on the rubber cylinder to rotate through the guide sleeve 42, the inflator 83 rotates immediately, in the rotating process of the inflator 83, the C-shaped rod 86 is extruded by the extrusion block 85 to move towards the inflator 83, the air in the inflator 83 is exhausted, the elastic piece 84 is compressed, the air is input into the rubber cylinder 81 by the inflator 83, the soldering flux in the rubber cylinder 81 flows into the cable core part of the cable 100 through the conveying pipe 82 immediately, the soldering flux is coated on the cable core part of the cable 100, the tin bar can be melted more uniformly, the tin liquid is convenient to fuse, the welding operation is convenient, then when the inflator 83 continues to rotate, the C-shaped rod 86 is separated from the extrusion block 85, the piston rod on the inflator 83 is reset under the action of the elastic piece 84, and when the inflator 83 continues to rotate, the extrusion block 85 can extrude the C-shaped rod 86 again, and the intermittent feeding operation is performed.

According to the invention, two cable cores to be connected are clamped by the wire twisting mechanism, the wire twisting mechanism is controlled to move along the circular guide rail to wind the two cable cores of the cable together, so that the cable cores of the two cables are tightly attached, the initial connection of the cable is realized, the flowing of tin liquid in the welding process is convenient, the arranged heating mechanism heats the cable cores, the cable cores of the cable are heated by the heating block, the tin strips are melted after contacting the heated cable cores, no additional heating device is needed, the cable welding is convenient, and the defects that the cable cores are not tightly attached and the signal transmission is influenced in the prior art are overcome; the tin bar is wound through the winding wheel, and the guide plate guides the tin bar to the cable, so that an operator can conveniently use the tin bar to perform welding operation, and the practicability of the device is improved; the motor is started to drive the driving wheel to rotate so as to pull the tin bar to the cable core of the cable, so that the tin bar is automatically conveyed, and the welding efficiency of the cable is improved; when the cable core of the cable is screwed down, the arranged coating mechanism can extrude the soldering flux into the cable core part of the cable, manual coating is not needed, and subsequent welding operation is facilitated.

The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. An automatic cable welding device comprises a rack (1) and a notched ring rail (2), wherein the notched ring rail (2) is connected onto the rack (1) in a sliding manner, an opening for the movement of a cable (100) is formed in the notched ring rail (2), so that the welded cable (100) can be taken out from the opening, the automatic cable welding device is characterized by further comprising an arc rail (3), a wire twisting mechanism (4) and a heating mechanism (5), the opening of the notched ring rail (2) is movably connected with the arc rail (3), the arc rail (3) and the notched ring rail (2) are closed to form a complete ring guide rail, the ring guide rail is movably provided with two wire twisting mechanisms (4) for winding the cable (100), the notched ring rail (2) is provided with the heating mechanism (5) for heating the cable (100), the cable (100) is heated to rapidly melt a tin bar contacted with the cable (100), the cable (100) is assisted in tin soldering, and the heating mechanism (5) is positioned behind the wire twisting mechanisms (4); stranding mechanism (4) are including walking subassembly, clamp splice (43), regulating part (44) and guide (45), be equipped with on the ring guide rail walking subassembly, swing joint has guide (45) on the walking subassembly, and the rigid coupling has clamp splice (43) that are used for centre gripping cable (100) on guide (45), be connected with regulating part (44) between walking subassembly and clamp splice (43), regulating part (44) and clamp splice (43) swing joint, when regulating part (44) are adjusted clamp splice (43) and are removed guide part (45) play the guide effect, and regulating part (44) are used for adjusting the clamp dynamics of clamp splice (43) to cable (100) to the realization presss from both sides tightly or unclamps cable (100), walking subassembly can follow arc rail (3) and breach ring rail (2) combination formation circumference removes on the ring guide rail, so that cable (100) carry out the winding connection.

2. The automatic cable welding device according to claim 1, wherein the traveling assembly comprises an electric slider (41) and a guide sleeve (42), the electric slider (41) is arranged on the circular guide rail, the electric slider (41) can move along the circumferential direction of the circular guide rail, the guide sleeve (42) is mounted on the electric slider (41), a guide piece (45) is connected with the guide sleeve (42) in a sliding manner, one end, far away from the clamping block (43), of an adjusting piece (44) penetrates into the guide sleeve (42), and the adjusting piece (44) is in threaded connection with the guide sleeve (42).

3. The automatic cable welding device according to claim 1, wherein the heating mechanism (5) comprises a supporting rod (51), heating blocks (52) and an opening and closing member, the supporting rod (51) is connected to the rear side of the notched ring rail (2), the two heating blocks (52) which are arranged oppositely are hinged to the upper end of the supporting rod (51), the two heating blocks (52) are used for heating the cable (100) during soldering, the opening and closing member is arranged between the heating blocks (52) and the supporting rod (51), and the opening and closing member is used for controlling the opening and closing of the two heating blocks (52) so as to facilitate the cable (100) to be placed into the two heating blocks (52) or taken out from between the two heating blocks (52).

4. The automatic cable welding device according to claim 3, wherein the opening and closing member comprises a sliding rod (53), a connecting rod (54) and a cylinder (55), a vertical sliding groove is formed in the upper portion of the supporting rod (51), the sliding rod (53) is movably arranged in the vertical sliding groove, the connecting rod (54) is hinged and connected between the sliding rod (53) and the heating block (52), the cylinder (55) is mounted on the supporting rod (51), a telescopic rod of the cylinder (55) is fixedly connected with the sliding rod (53), and the cylinder (55) stretches and retracts to control the opening and closing of the two heating blocks (52) through the sliding rod (53) and the connecting rod (54).

5. The automatic cable welding device according to claim 1, further comprising a guide mechanism (6), wherein the guide mechanism (6) comprises a support rod (61), a reel (62) and a guide plate (63), the support rod (61) is arranged on the notch ring rail (2), the reel (62) for winding the tin bar is rotatably arranged on the support rod (61), the guide plate (63) is arranged on one side, close to the reel (62), of the clamping block (43), and a guide hole for guiding the tin bar to the cable (100) is formed in the guide plate (63).

6. The automatic cable welding device according to claim 5, further comprising a traction mechanism (7) for drawing the tin bar onto the cable (100), wherein the traction mechanism (7) comprises a motor (71), a driving wheel (72) and a driven wheel (73), the guide plate (63) is provided with the motor (71) and the driven wheel (73), the driven wheel (73) is rotatably connected with the guide plate (63), the output shaft of the motor (71) is provided with the driving wheel (72), the driving wheel (72) and the driven wheel (73) are respectively located on two sides of the guide hole, and the driving wheel (72) and the driven wheel (73) are used for drawing the tin bar onto the cable (100).

7. The automatic cable welding device according to claim 2, further comprising a coating mechanism (8) for coating soldering flux on the cable (100) during soldering, wherein the coating mechanism (8) comprises a rubber cylinder (81), a delivery pipe (82) and a pressurizing assembly, the guide sleeve (42) is provided with the rubber cylinder (81) for loading the soldering flux, the discharge end of the rubber cylinder (81) is communicated with the delivery pipe (82) penetrating through the clamping block (43), the rubber cylinder (81) is connected with the pressurizing assembly, and the pressurizing assembly is used for applying pressure to the inside of the rubber cylinder (81) so that the soldering flux in the rubber cylinder (81) is extruded out of the delivery pipe (82).

8. The automatic welding device for the cables as claimed in claim 7, wherein the pressurizing assembly comprises an inflator (83), an elastic member (84) and an extrusion block (85), the inflator (83) is connected to the front end of the rubber cylinder (81), the elastic member (84) is arranged on the inflator (83), the extrusion block (85) is arranged on the front end face of the gap ring rail (2), the inflator (83) is extruded by the extrusion block (85) to do work, the elastic member (84) is used for resetting after the inflator (83) does work, so that the inflator (83) can suck and discharge air in a reciprocating manner, and the discharged air is pushed into the rubber cylinder (81) to discharge the soldering flux and is coated on the cables (100).

9. An automatic cable welding device as claimed in claim 8, characterized in that the outer rings of the driving wheel (72) and the driven wheel (73) are provided with a ring of teeth, and the teeth increase the friction force with the tin bar.

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