A cable sheath sealing lead welding and fixing mold

Abstract

This invention proposes a cable sheath lead sealing and welding fixing mold, specifically relating to cable processing equipment. The cable sheath lead sealing and welding fixing mold includes a worktable and a lower mold fixedly connected to the worktable. Multiple limiting rods are fixedly connected to the lower mold, and an upper mold is slidably connected to the multiple limiting rods. A lead injection hole is opened in the middle of the upper mold. Both ends of the lower and upper molds are provided with clamping parts. Each clamping part includes a first arc-shaped clamping plate rotatably connected to the lower mold and a second arc-shaped clamping plate rotatably connected to the upper mold. The cable sheath lead sealing and welding fixing mold provided by this invention uses a drive unit to rotate the cable held by the clamping parts within the mold. Centrifugal force effectively removes air bubbles and impurities from the molten lead, making the temperature and flow fields of the molten lead more uniform, thereby reducing defects such as porosity and shrinkage, and enhancing the bonding effect between the lead layer and the cable sheath.

Description

Technical Field

[0001] This invention relates to the field of cable processing equipment technology, specifically to a cable sheath sealing lead welding and fixing mold. Background Technology

[0002] Lead sealing welding of cable sheaths is a key process in the splicing and repair of power cables. It is used to inject molten lead into cable joints or damaged areas through a mold, so that after cooling, a lead-sealed sheath that integrates sealing, mechanical protection and electromagnetic shielding is formed. This process has extremely high requirements for sealing and waterproofing, mechanical strength and electrical continuity, and is an important technical link to ensure the long-term safe and stable operation of cable lines.

[0003] However, in the existing lead sealing process using fixed molds, the molten lead is in a static cooling state within the mold cavity. This method easily leads to uneven flow and poor shrinkage of the lead due to its own weight and natural cooling sequence. As a result, defects such as air holes and shrinkage may occur inside the formed lead sealing sheath. Furthermore, the tightness of the bond between the lead layer and the cable sheath surface is difficult to achieve. The inherent quality problems caused by the static casting and solidification process directly affect the long-term sealing reliability and mechanical properties of the lead sealing sheath.

[0004] Therefore, it is necessary to provide a new type of cable sheath sealing lead welding and fixing mold to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by this invention is to overcome the problems of uneven distribution of lead liquid and easy generation of internal defects caused by static casting in the existing cable sheath sealing process, as well as low efficiency and low quality consistency of manual operation. The invention provides a cable sheath sealing lead welding and fixing mold. The equipment uses a synchronously rotating clamping part and a set of purely mechanical linkage drive and reset components to drive the cable to rotate at a uniform speed in the mold during the welding process. Centrifugal force and dynamic stirring action are used to make the lead liquid fill and solidify evenly. The process realizes the operation from clamping and positioning, rotation welding to automatic reset, which improves the bonding strength, process consistency and operation efficiency of the sealing sheath, and reduces the intensity of manual operation and quality risk.

[0006] To solve the above-mentioned technical problems, the present invention provides a cable sheath lead sealing and welding fixing mold, including a worktable and a lower mold fixedly connected to the worktable. Multiple limiting rods are fixedly connected to the lower mold, and an upper mold is slidably connected to the multiple limiting rods. A lead injection hole is opened in the middle of the upper mold. Both ends of the lower mold and the upper mold are provided with clamping parts. Each clamping part includes a first arc-shaped clamping plate rotatably connected to the lower mold and a second arc-shaped clamping plate rotatably connected to the upper mold. The clamping parts are used to clamp the two sides of the workpiece to be welded. A driving unit is provided on the lower mold, and the driving unit is used to simultaneously drive the two clamping parts to rotate for welding.

[0007] Preferably, an electric telescopic rod is fixedly connected to the worktable, the extended end of the electric telescopic rod is fixedly connected to the upper mold, a plurality of alignment rods are fixedly connected to the bottom of the upper mold, and a plurality of alignment grooves adapted to the alignment rods are fixedly connected to the top of the lower mold.

[0008] Preferably, both the first and second arc-shaped card plates are fixedly connected to a limiting ring with an L-shaped cross-section. The lower and upper molds are both provided with limiting grooves that are adapted to the size of the limiting rings. Both the limiting rings and the limiting grooves are semi-circular arc-shaped. A plug rod is fixedly connected to the second arc-shaped card plate, and a slot adapted to the size of the plug rod is fixedly connected to the first arc-shaped card plate.

[0009] Preferably, an arc-shaped connecting plate is fixedly connected to both the first arc-shaped clamping plate and the second arc-shaped clamping plate. An arc-shaped turntable is fixedly connected to one end of the arc-shaped connecting plate facing away from the first arc-shaped clamping plate and the second arc-shaped clamping plate. The arc-shaped turntable is rotatably connected to the side wall of the lower mold. The arc-shaped turntable is used to connect with the driving unit to drive the clamping part to rotate the workpiece.

[0010] Preferably, the drive unit includes follower gears fixedly connected to two arc-shaped turntables on the same side and a drive gear rotatably connected to the lower mold. The follower gear is divided into two along the central axis and fixedly connected to the two arc-shaped turntables respectively. The follower gear meshes with the drive gear. A reset unit is provided on the lower mold. The reset unit is used to move the drive unit to the initial position so as to facilitate the separation of the separately set follower gears.

[0011] Preferably, a drive rod is fixedly connected between the drive gears at both ends of the lower mold, a first bevel gear is fixedly connected to the drive rod, a manual turntable is rotatably connected to the lower mold, a second bevel gear is fixedly connected to the manual turntable, and the first bevel gear and the second bevel gear are meshed together.

[0012] Preferably, the reset unit includes a first mounting rod fixedly connected to the lower mold and a second mounting rod fixedly connected to the drive gear. A locking block is elastically connected to the second mounting rod, and a slot adapted to the size of the locking block is provided on the second mounting rod. The end face of the locking block is provided with an inclined ramp. When the locking block is inserted into the slot, the first arc-shaped locking plate and the second arc-shaped locking plate rotate to an angle that is symmetrical from top to bottom.

[0013] Preferably, the second mounting rod has a storage cavity for moving the locking block. The locking block is elastically connected to the inner wall of the storage cavity by a return spring. Dovetail blocks are fixedly connected to both sides of the locking block. A dovetail groove adapted to the size of the dovetail block is formed on the inner wall of the storage cavity. Beneficial effects

[0014] Compared with related technologies, the cable sheath sealing lead welding and fixing mold provided by the present invention has the following beneficial effects: 1. The cable sheath sealing lead welding and fixing mold proposed in this invention drives the cable held by the clamping part to rotate inside the mold through the driving unit. The centrifugal force effectively removes air bubbles and impurities in the lead liquid, making the temperature field and flow field of the lead liquid more uniform, thereby reducing defects such as porosity and shrinkage, enhancing the bonding effect between the lead layer and the cable sheath, and finally obtaining a uniform and high-strength sealing lead sheath.

[0015] 2. The cable sheath sealing lead welding and fixing mold proposed in this invention uses an electric telescopic rod to drive the mold opening and closing. With the help of the guide positioning system of the limit rod, alignment rod and alignment groove, it can achieve fast and accurate mold closing. The insertion rod and slot structure ensures that the split arc-shaped card plate can be automatically spliced ​​into a concentric circle. The gear transmission mechanism realizes synchronous rotation at both ends. The overall design reduces manual intervention and improves process consistency and production efficiency.

[0016] 3. The separate follower gear and drive gear of the cable sheath sealing lead welding and fixing mold proposed in this invention solve the functional contradiction between rotation drive and mold opening and closing. The purely mechanical reset unit ensures that the drive system can automatically reset to a safe position after each cycle, ensuring smooth mold opening action. The additional manual drive interface enhances the applicability of the equipment in the absence of power or in the case of debugging. The overall structure is robust and reliable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a cable sheath sealing lead welding and fixing mold according to the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a diagram showing the state of a cable sheath sealing lead welding and fixing mold during mold closing according to the present invention; Figure 4 This is a connection diagram of the drive unit of a cable sheath sealing lead welding and fixing mold according to the present invention; Figure 5 This is a split view of the first and second arc-shaped clamping plates of a cable sheath sealing lead welding and fixing mold according to the present invention; Figure 6 This is a diagram showing the positional relationship of the clamping part in a cable sheath sealing lead welding and fixing mold according to the present invention; Figure 7 This is a diagram showing the positional relationship of the reset unit in a cable sheath sealing lead welding and fixing mold according to the present invention. Figure 8 This is an exploded view of the reset unit of a cable sheath sealing lead welding and fixing mold according to the present invention.

[0019] Explanation of icon numbers: 1. Workbench; 11. Lower mold; 12. Upper mold; 121. Lead injection hole; 13. Electric telescopic rod; 14. Limiting rod; 15. Alignment rod; 16. Alignment groove; 2. Material clamping section; 21. First arc-shaped clamping plate; 22. Second arc-shaped clamping plate; 211. Limiting ring; 212. Limiting groove; 23. Arc-shaped connecting plate; 231. Arc-shaped turntable; 24. Insert rod; 25. Slot; 3. Drive unit; 31. Drive gear; 311. Follower gear; 32. Drive rod; 33. Manual turntable; 34. First bevel gear; 35. Second bevel gear; 4. Reset unit; 41. First mounting rod; 42. Second mounting rod; 43. Clamping block; 431. Overtaking ramp; 44. Clamping groove; 45. Receiving cavity; 46. Dovetail block; 47. Dovetail groove; 48. Reset spring; 5. Cable workpiece. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figures 1 to 8 As shown in the figure, an embodiment of the present invention provides a cable sheath lead sealing and welding fixing mold, including a workbench 1 and a lower mold 11 fixedly connected to the workbench 1. The lower mold 11 is rigidly fixed to the workbench 1 by bolts or welding. An upper mold 12 is sleeved on multiple limiting rods 14 fixed to the lower mold 11 through guide holes. To facilitate the loading and unloading of cables, the limiting rods 14 can be set on the same side. A lead injection hole 121 opened in the center of the upper mold 12 is used to pour molten lead. At both ends of the mold, a set of clamping parts 2 are respectively provided. Each set of clamping parts 2 consists of a first arc-shaped clamping plate 21 located in the lower mold 11 and a second arc-shaped clamping plate 22 located in the upper mold 12. When the mold is closed, the two together form a complete circular hole to clamp the two sides of the cable to be sealed with lead. When the arc-shaped clamping plate is specifically set, its clamping surface can be increased. A high-temperature resistant flexible liner is added, and the drive unit 3 set in the lower mold 11 can drive the two sets of clamping parts 2 and the clamped cables to rotate synchronously through a mechanical linkage mechanism. In specific implementation, an elastic baffle can be set between the upper mold 12 and the second arc-shaped clamping plate 22, and between the lower mold 11 and the first arc-shaped clamping plate 21. In the mold-open state, the baffle forces the corresponding arc-shaped clamping plate to always stay in the preset initial position in its arc-shaped limiting groove. This position is the starting position for mold closing and docking. The baffle can be moved away before mold closing. In this way, the cable clamping function and the rotation drive function are integrated into both ends of the mold body, so that after the lead liquid is poured, the cable can be driven to rotate in the mold cavity immediately. This optimizes the flow and solidification process of the lead liquid by using centrifugal force and stirring action, thereby improving the quality of the molded lead sheath.

[0024] The cylinder of the electric telescopic rod 13 is fixed below or to the side of the worktable 1. The extended end of its piston rod is connected to the lifting lug of the upper mold 12. By controlling the extension and retraction of the electric telescopic rod 13, the upper mold 12 can be raised and lowered. On the bottom surface of the upper mold 12, multiple cylindrical alignment rods 15 are also provided. On the corresponding position on the upper surface of the lower mold 11, a conical hole or cylindrical hole matching its shape and size is machined as an alignment groove 16. In the final stage of the mold closing process, the upper mold 12 approaches the lower mold 11 under the drive of the electric telescopic rod 13. At this time, the alignment rod 15 will first insert into the alignment groove 16, guiding the upper mold 12 to complete the final alignment, ensuring that the cavities of the upper and lower molds 11 and the clamping parts 2 at both ends are completely aligned. The advantage of this setting is that it improves production efficiency and reduces the intensity of manual operation. The cooperation between the alignment rod 15 and the alignment groove 16 can serve as a guide for the side without the limit rod 14, ensuring the accuracy of each mold closing.

[0025] Specifically, the first arc-shaped clamping plate 21, through an L-shaped limiting ring 211 cast or welded on its back, is embedded into the corresponding arc-shaped limiting groove 212 machined on the lower mold 11, forming a rotating pair. Similarly, the second arc-shaped clamping plate 22 also achieves a rotating connection by cooperating with the limiting groove 212 of the upper mold 12 through its own L-shaped limiting ring 211. This L-shaped cross-section constitutes an axial and radial constraint, allowing the clamping plate to rotate smoothly around its central axis. In addition, a short insert rod 24 is vertically fixed on the splicing end face of the second arc-shaped clamping plate 22, and on the splicing end face of the first arc-shaped clamping plate 21... At the corresponding position, a blind hole is opened as a slot 25. When the upper and lower molds 11 are closed, the two arc-shaped clamping plates approach each other, and the insert rod 24 will be precisely inserted into the slot 25. This setting provides stable and reliable rotational support for the arc-shaped clamping plates. The L-shaped limiting ring 211 and the limiting groove 212 are easy to process and assemble. The design of the insert rod 24 and the slot 25 realizes the interlocking of the two semi-circular clamping plates when the mold is closed, ensuring that they can form a concentric circle to clamp the cable. At the same time, the two clamping plates are temporarily connected into a whole that can be driven synchronously, providing a basis for subsequent rotational actions.

[0026] Secondly, one side of the arc-shaped connecting plate 23 is fixed to the back of the arc-shaped clamping plate, and the other side is fixed to the arc-shaped turntable 231. The arc-shaped turntable 231 can rotate freely. Since the first arc-shaped clamping plate 21 and the second arc-shaped clamping plate 22 are connected during mold closing through the insert rod 24 and the slot 25, the arc-shaped turntable 231 on their backs actually constitutes a driven plate. The output power of the drive unit 3 will act on this arc-shaped turntable 231. Secondly, at each end of the mold, a half-gear is fixed to the outer edge of each of the two arc-shaped turntables 231. These two half-gears, when the mold is closed, can be assembled into a complete follower gear 311. A drive gear 31 is mounted on the side of the lower mold 11 through a bearing seat and meshes with this assembled follower gear 311. When the drive cable needs to rotate, the power is applied to the drive gear 31, which can simultaneously drive the two half-gears to rotate synchronously. Since the mold needs to open and close, the follower gear 311 must be separable. The function of the reset unit 4 is to ensure that the drive gear 31 can move to the initial position before or at the start of the mold opening action. At this position, the teeth of the drive gear 31 are just disengaged from the two half-gears. The separable follower gear 311 solves the problem of rotation drive and mold opening and closing, realizing the effect of mold closing linkage and mold opening separation. The reset unit 4 ensures that the transmission system can be smoothly disengaged each time the mold is opened.

[0027] Furthermore, a drive rod 32 passes through the support seat inside or on the side of the lower mold 11, and its two ends are fixed to the drive gears 31 at the left and right ends of the mold by means of key connection or other means, so that the two drive gears 31 can rotate synchronously. In the middle section of the drive rod 32, a first bevel gear 34 is installed, and a manual turntable 33 is rotatably installed on the lower mold 11. A second bevel gear 35 that meshes with the first bevel gear 34 is installed on the manual turntable 33. When the operator rotates the manual turntable 33, the power is transmitted to the drive rod 32 through the bevel gear reversal, and finally synchronously drives the drive gears 31 at both ends.

[0028] Furthermore, the reset unit 4 is a one-way overrunning clutch structure mounted on the shaft of the drive gear 31. The first mounting rod 41 is fixed to the lower mold 11, and its end is equivalent to a fixed limiting block. The second mounting rod 42 is fixed to the drive gear 31 and rotates accordingly. The locking block 43 is mounted in the locking groove 44 at the end of the second mounting rod 42 by a spring and can extend and retract radially. Its front end is machined with an overrunning ramp 431 with an inclined surface. When the drive gear 31 is rotated manually or electrically in the working direction, the inclined surface on the locking block 43 will contact the first mounting rod 41. Under the action of the inclined surface, the locking block 43 is pressed back into the locking groove 44, thereby allowing the second mounting rod 42 to rotate. After successfully rotating past the first mounting rod 41, the drive gear 31 stops or is slightly reversed in the reset direction by external force. The other side of the vertical surface of the locking block 43 will press against the first mounting rod 41 and lock under the action of the spring, thereby preventing reverse rotation and locking the drive gear 31 in the current position. In specific implementation, this locking position is exactly the initial position where the drive gear 31 disengages from the follower gear 311. This setting realizes a purely mechanical reset and positioning function, ensuring that the drive gear 31 can return to the preset initial angle position after each welding rotation process, preparing for the safe separation of the gear when the mold is opened next time.

[0029] Furthermore, a closed storage cavity 45 is machined at the end of the second mounting rod 42. The main body of the locking block 43 is placed in this cavity, and its rear end abuts against a return spring 48. The other end of the spring abuts against the bottom of the cavity, providing a continuous outward elastic force for the locking block 43. In order to ensure that the locking block 43 does not deflect or fall off during the extension and retraction process, dovetail blocks 46 are designed on both sides, which cooperate with the dovetail grooves 47 on the inner wall of the storage cavity 45 to provide a stable guide for the locking block 43, ensuring that the locking block 43 can only extend and retract smoothly in the preset straight direction, and ensuring that the locking block 43 can pop out in time and achieve effective locking under various working conditions.

[0030] Working principle: During operation, the operator places the cable to be sealed with lead at the predetermined position on the lower mold 11, ensuring the area to be processed is between the first arc-shaped clamping plates 21 at both ends. The equipment is then started, and the electric telescopic rod 13 below the worktable 1 actuates, driving the upper mold 12 to descend smoothly along the limiting rod 14 fixed to the lower mold 11, entering the mold closing process. In the final stage of mold closing, multiple cylindrical alignment rods 15 at the bottom of the upper mold 12 are precisely inserted into the alignment grooves 16 at the top of the lower mold 11, completing the positioning and ensuring the cavities of the upper and lower molds 11 are completely aligned. Simultaneously, short inserts 24 installed on the end face of the second arc-shaped clamping plate 22 of the upper mold 12 are inserted into the slots 25 on the end face of the first arc-shaped clamping plate 21 of the lower mold 11, interlocking the upper and lower arc-shaped clamping plates radially and axially. A concentric circular hole is formed to securely clamp the cable within it. The arc-shaped turntables 231, connected to the backs of the two clamping plates, also align. The two half-gears on their outer edges combine to form a complete follower gear 311. After mold closing, molten lead is poured into the sealed cavity through the lead injection hole 121. Subsequently, the drive unit 3 is activated. The operator can rotate the manual turntable 33, or the mold can be driven by external power. Power is transmitted through the meshing second bevel gear 35 and first bevel gear 34, causing the horizontal drive rod 32 to rotate. The drive gears 31 fixed at both ends of the drive rod 32 rotate synchronously. The drive gears 31 mesh with the follower gears 311 already assembled at both ends of the mold, thereby driving the arc-shaped turntables 231, arc-shaped connecting plates 23, and the... The first arc-shaped clamping plate 21 and the second arc-shaped clamping plate 22, driven by these components, rotate synchronously around the cable axis as a whole. The clamped cable rotates within the cavity filled with molten lead. This rotation process utilizes centrifugal force to promote the movement of air bubbles and impurities in the molten lead to the periphery, and through stirring, makes the temperature and composition distribution of the molten lead more uniform, thereby optimizing the solidification process and improving the density and bonding strength of the lead sheath. After the welding and rotation process is completed, the mold is opened. At this time, the reset unit 4 integrated on the drive gear 31 shaft begins to function. This unit is essentially a one-way overrunning clutch, consisting of a first mounting rod 41 fixed to the lower mold 11, a second mounting rod 42 fixed to the drive gear 31 shaft, and an internal elastically telescopic clamping block 43. At this time, the reverse rotation occurs. When the drive gear 31 reverses, the manual turntable 33, under the action of the internal return spring 48, pops out, and its vertical surface locks against the first mounting rod 41, locking the drive gear 31 at a specific angle position. This position is the initial position of the follower gear 311, that is, the two parts of the follower gear 311, which are divided into two, can be divided in two along the horizontal line, preparing for mold opening. Finally, the electric telescopic rod 13 moves in the opposite direction, pulling the upper mold 12 up. Since the drive gear 31 has been reset to the disengaged position, the mold opening process is not hindered by gear meshing. As the upper mold 12 rises, the second arc-shaped clamping plate 22 drives the first arc-shaped clamping plate 21 to move slightly in sync through the insertion rod 24 and then separates, exposing the high-quality lead-sealed sheath that has been formed on the cable.Then simply remove the workpiece.

[0031] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A die for sealing and fixing cable sheaths with lead welding, characterized in that: The device includes a workbench (1) and a lower mold (11) fixedly connected to the workbench (1). Multiple limiting rods (14) are fixedly connected to the lower mold (11). An upper mold (12) is slidably connected to the multiple limiting rods (14). A lead injection hole (121) is opened in the middle of the upper mold (12). Both ends of the lower mold (11) and the upper mold (12) are provided with clamping parts (2). The clamping parts (2) include a first arc-shaped clamping plate (21) rotatably connected to the lower mold (11) and a second arc-shaped clamping plate (22) rotatably connected to the upper mold (12). The clamping parts (2) are used to clamp the two sides of the workpiece to be welded. A driving unit (3) is provided on the lower mold (11). The driving unit (3) is used to drive the two clamping parts (2) to rotate simultaneously for welding.

2. The cable sheath lead sealing welding and fixing mold according to claim 1, characterized in that: An electric telescopic rod (13) is fixedly connected to the workbench (1). The extended end of the electric telescopic rod (13) is fixedly connected to the upper mold (12). A plurality of alignment rods (15) are fixedly connected to the bottom of the upper mold (12). A plurality of alignment slots (16) that are adapted to the alignment rods (15) are fixedly connected to the top of the lower mold (11).

3. The cable sheath lead sealing welding and fixing mold according to claim 1, characterized in that: Both the first arc-shaped plate (21) and the second arc-shaped plate (22) are fixedly connected to a limiting ring (211) with an L-shaped cross section. Both the lower mold (11) and the upper mold (12) are provided with a limiting groove (212) that matches the size of the limiting ring (211). Both the limiting ring (211) and the limiting groove (212) are semi-circular arc-shaped. A plug rod (24) is fixedly connected to the second arc-shaped plate (22), and a slot (25) that matches the size of the plug rod (24) is fixedly connected to the first arc-shaped plate (21).

4. The cable sheath sealing lead welding and fixing mold according to claim 1, characterized in that: Both the first arc-shaped clamping plate (21) and the second arc-shaped clamping plate (22) are fixedly connected to an arc-shaped connecting plate (23). An arc-shaped turntable (231) is fixedly connected to one end of the arc-shaped connecting plate (23) facing away from the first arc-shaped clamping plate (21) and the second arc-shaped clamping plate (22). The arc-shaped turntable (231) is rotatably connected to the side wall of the lower mold (11). The arc-shaped turntable (231) is used to connect with the driving unit (3) to drive the clamping part (2) to rotate the workpiece.

5. The cable sheath lead sealing welding and fixing mold according to claim 4, characterized in that: The drive unit (3) includes a follower gear (311) fixedly connected to two arc-shaped turntables (231) on the same side and a drive gear (31) rotatably connected to the lower mold (11). The follower gear (311) is divided into two along the central axis and fixedly connected to the two arc-shaped turntables (231) respectively. The follower gear (311) meshes with the drive gear (31). The lower mold (11) is provided with a reset unit (4). The reset unit (4) is used to move the drive unit (3) to the initial position so as to facilitate the separation of the separately set follower gear (311).

6. The cable sheath lead sealing welding and fixing mold according to claim 5, characterized in that: A drive rod (32) is fixedly connected between the drive gears (31) at both ends of the lower mold (11). A first bevel gear (34) is fixedly connected to the drive rod (32). A manual turntable (33) is rotatably connected to the lower mold (11). A second bevel gear (35) is fixedly connected to the manual turntable (33). The first bevel gear (34) and the second bevel gear (35) are meshed together.

7. The cable sheath lead sealing welding and fixing mold according to claim 5, characterized in that: The reset unit (4) includes a first mounting rod (41) fixedly connected to the lower mold (11) and a second mounting rod (42) fixedly connected to the drive gear (31). A locking block (43) is elastically connected to the second mounting rod (42). A slot (44) adapted to the size of the locking block (43) is provided on the second mounting rod (42). A ramp (431) with an inclined surface is provided on the end face of the locking block (43). When the locking block (43) is inserted into the slot (44), the first arc-shaped locking plate (21) and the second arc-shaped locking plate (22) rotate to an angle that is symmetrical up and down.

8. The cable sheath lead sealing welding and fixing mold according to claim 7, characterized in that: The second mounting rod (42) has a storage cavity (45) for moving the locking block (43). The locking block (43) is elastically connected to the inner wall of the storage cavity (45) by a return spring (48). Dovetail blocks (46) are fixedly connected to both sides of the locking block (43). A dovetail groove (47) adapted to the size of the dovetail block (46) is provided on the inner wall of the storage cavity (45).

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