Multi-stage linkage type liquid-cooled cable core coating forming equipment

Abstract

The invention relates to the technical field of cable processing, in particular to multi-stage linkage type liquid-cooled cable core coating forming equipment which comprises a rack and a protection frame, the protection frame is fixedly installed on one side of the rack, a pretreatment mechanism is arranged in the protection frame, and a first forming frame, a second forming frame and a connection treatment mechanism are sequentially arranged on the top face of the rack. The pretreatment mechanism comprises two sets of treatment frames which are movably arranged in the rack and are of a hoist structure, and long clamping grooves are formed in the front ends of the opposite faces of the two sets of treatment frames. The problems that the surface cleanliness of a cable core of a liquid-cooled cable is insufficient, the binding force of a coating layer is weak, and cooling is uneven are solved, and the forming quality and production efficiency of the liquid-cooled cable are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable processing, in particular to multi-stage linkage liquid-cooled cable core covering molding equipment. Background Art

[0002] With the rapid development of new energy, data centers, industrial automation and other fields, liquid-cooled cables with high power and high heat dissipation requirements are becoming more and more widely used. Liquid-cooled cables are filled with cooling medium through internal microchannels, which can effectively reduce the operating temperature of the cable core, extend the service life and improve safety. However, the core performance of liquid-cooled cables is highly dependent on the quality of cable core pretreatment, the molding accuracy of the coating layer and the cooling and shaping effect.

[0003] Liquid-cooled cables require extremely high interfacial bonding strength between the coating and the cable core. However, the existing technology does not adequately treat the cable core, which can lead to problems such as insufficient surface cleanliness of the cable core, weak coating bonding, and uneven cooling. For example, a shake-resistant cable core coating machine with patent number CN221406896U reduces the shaking of the cable core during transportation and when it enters the coating extruder by stabilizing the cable core transport mechanism.

[0004] However, the above device can only ensure the straight transmission of the cable core, and lacks surface treatment of the cable core before coating. It is easy to affect the bonding strength between the cable core and the coating material due to oil stains and oxide layer pollutants on the cable core surface, and cannot meet the high sealing requirements of liquid-cooled cables.

[0005] In addition, due to the widespread use of a single-stage extrusion process, it is difficult to meet the graded coating requirements of the "inner sealing layer - outer protective layer" of liquid-cooled cables, which can easily lead to insufficient cable core coating thickness. At the same time, the cooling and shaping link after coating is disconnected from the coating process. The cable core is prone to displacement or knotting due to tension fluctuations during transmission, resulting in coating thickness deviation, which further affects the cable core coating quality. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems of insufficient surface cleanliness of the liquid-cooled cable core, weak bonding strength of the coating, and uneven cooling through the coordinated setting of multi-process integrated pretreatment, graded overmolding, dynamic rotation correction and synchronous cooling, so as to significantly improve the molding quality and production efficiency of the liquid-cooled cable.

[0007] The object of the present invention can be achieved by the following technical solution: a multi-stage linkage liquid-cooled cable core overmolding device, comprising a frame and a protective frame, wherein the protective frame is fixedly mounted on one side of the frame, a pre-processing mechanism is provided inside the protective frame, and a first molding frame, a second molding frame and a connection processing mechanism are sequentially provided on the top surface of the frame;

[0008] Among them, the pretreatment mechanism includes two groups of processing frames with gourd structures movably arranged inside the frame, long slots are provided at the front ends of the opposite surfaces of the two groups of processing frames, and a round tooth plate is rotatably provided at the front end inside the processing frame, a V-shaped slot is provided at the center of the rear end of the round tooth plate, and the inner wall of the V-shaped slot is rough, and heat-conducting rollers are provided at adjacent positions on the side of the two groups of round tooth plates away from each other and at the angle end of the V-shaped slot, and two groups of auxiliary rotating gears are meshed at the rear end of the round tooth plate inside the processing frame, and the rear ends of the two groups of auxiliary rotating gears are meshed with main rotating gears.

[0009] Furthermore, the opposite ends of the two groups of main rotating gears extend to the outside of the processing frame and are fixedly sleeved with transmission gears. The rear ends of the two groups of transmission gears are jointly engaged with long-toothed rollers, and the shaft at one end of the long-toothed roller extends to the inner wall of one side of the protective frame and is provided with a single-axis motor.

[0010] Furthermore, a single-axis motor 2 is provided at the center of the top surface of one group of the processing frames, and a spiral guide rod 1 is provided at the output end of the single-axis motor 2, and a spiral sleeve is fixedly installed at the center of the top surface of another group of the processing frames, and the spiral sleeve is spirally sleeved on the outside of the spiral guide rod 1.

[0011] Furthermore, a material guide tube is provided at the center of the top of the first molding frame and the second molding frame, and a hot melt frame is provided on the top of the material guide tube. A spiral extrusion rod is vertically provided inside the hot melt frame, and the bottom of the spiral extrusion rod extends to the inside of the material guide tube. The inner diameter of the conical extrusion port of the second molding frame is twice the inner diameter of the conical extrusion port of the first molding frame.

[0012] Furthermore, the connection processing mechanism includes two groups of concave positioning frames fixedly installed on the top surface of the frame, the two groups of positioning frames are staggered and arranged at adjacent positions of the first forming frame and the second forming frame, and limiting gears are rotatably arranged at the front and rear ends and the bottom center inside the positioning frames. A dual-axis motor is commonly arranged between the limiting gears located at the bottom of the two groups of positioning frames, and a gear ring frame is commonly meshed and connected between the three groups of limiting gears.

[0013] Furthermore, a horizontal frame is provided on the inner wall of the top of the gear ring frame, and a dual-axis motor 2 is provided on the bottom of the horizontal frame through the machine base, and two spiral guide rods with opposite threads are fixedly installed at both ends of the dual-axis motor 2, and the two groups of spiral guide rods are externally spirally sleeved with clamping frames, and several groups of rollers are embedded in the opposite surfaces of the two groups of clamping frames at equal distances.

[0014] Furthermore, the spacing between the two groups of clamping frames inside one group of the gear ring frames is twice the spacing between the two groups of clamping frames inside the other group of the gear ring frames, and a double-headed fan is provided at the top end of one side of each group of the gear ring frames.

[0015] Furthermore, cooling vertical frames are provided on one side of the gear ring frame and at the front and rear ends of the double-headed fan, and the front and rear end ventilation pipes of the double-headed fan are respectively fixedly connected to the top of the cooling vertical frames. The two groups of cooling vertical frames are mirror-symmetrical relative to the central axis of the gear ring frame, and ventilation mesh panels are embedded in the opposite surfaces of the two groups of cooling vertical frames.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention sets a pre-treatment mechanism, first positioning and clamping: two sets of processing frames clamp the wire core through the V-shaped groove of the round tooth plate to prevent the wire core from sliding during the pre-treatment process. The design of the V-shaped groove and the opening groove of the processing frame overlaps to achieve precise positioning of the wire core; then dynamic friction cleaning and correction: a single-axis motor drives a spiral guide rod to cooperate with a spiral sleeve to achieve left and right movement of the processing frame, and uses the rotating round tooth plate to dynamically correct the bending area of ​​the wire core to avoid subsequent coating wrinkles; and the built-in heat conduction roller of the round tooth plate evenly conducts heat to the surface of the wire core as it rotates, thereby improving the bonding stability of the subsequent coating material and the wire core;

[0018] The pretreatment mechanism integrates four major functions: clamping and positioning, friction cleaning, bending correction and thermal preheating, providing a clean, flat and temperature-adapted wire core surface for overmolding, directly improving the bonding strength of the coating layer and the molding quality.

[0019] 2. The present invention also sets a first molding frame and a second molding frame to correspond to the layered thickening requirements of the primary coating and secondary coating of the liquid cooling cable respectively. The primary coating is the bottom layer seal, and the secondary coating is the outer layer protection. The layered structure strengthens the sealing of the liquid cooling channel.

[0020] 3. The present invention also provides a connection processing mechanism to adjust the clamping and rotary rolling: the gear ring frame is driven by the limit gear of the dual-axis motor 1 to rotate synchronously, and the internal clamping frame is adjusted by the reverse spiral guide rod 2 of the dual-axis motor 2 to adapt to the change in the diameter of the cable core after the first and second coating. The curved surface of the roller inside the clamping frame fits the cable core, and the rotary rolling ensures the flatness of the outer wall to avoid surface defects of the coating layer.

[0021] Post-rotation cooling and shaping: The gear ring frame rotates synchronously with the limit gear, and the internal double-head fan supplies air to the cooling vertical frame through the ventilation duct. The cold air blows evenly on the outer wall of the cable core through the ventilation mesh plate. The rotating structure ensures cooling without dead angles, avoiding cable core deformation or coating shrinkage and cracking due to local uneven cooling, further improving the quality of layered coated cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the frame and its surface structure of the present invention;

[0025] Figure 3 It is a side sectional view of the combination of the protection frame and the pre-treatment mechanism of the present invention;

[0026] Figure 4 is a top sectional view of the protective frame of the present invention;

[0027] Figure 5 It is a partial schematic diagram of the pretreatment mechanism of the present invention;

[0028] Figure 6 It is a partial schematic diagram of the connection processing mechanism of the present invention;

[0029] Figure 7 It is a side sectional view of the positioning frame of the present invention.

[0030] In the figure: 1. Frame; 2. Protection frame; 3. Pretreatment mechanism; 31. Treatment frame; 32. Circular tooth plate; 321. Heat transfer roller; 33. Auxiliary gear; 34. Main gear; 35. Transmission gear; 36. Long tooth roller; 37. Single-axis motor 1; 38. Single-axis motor 2; 39. Spiral guide rod 1; 310. Spiral sleeve; 4. First forming frame; 401. Material guide tube; 402. Hot melt frame; 403. Spiral extrusion rod; 5. Second forming frame; 6. Connection processing mechanism; 61. Positioning frame; 62. Limiting gear; 63. Double-axis motor 1; 64. Gear ring frame; 65. Horizontal frame; 66. Double-axis motor 2; 67. Spiral guide rod 2; 68. Clamping frame; 69. Roller; 610. Double-head fan; 611. Cooling vertical frame. DETAILED DESCRIPTION

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1 - Figure 5 As shown, the multi-stage linkage liquid-cooled cable core overmolding equipment includes a frame 1 and a protective frame 2. The protective frame 2 is fixedly mounted on one side of the frame 1, and a pretreatment mechanism 3 is provided inside the protective frame 2.

[0033] The pre-treatment mechanism 3 includes two groups of processing frames 31 with a gourd structure movably arranged inside the frame 1. Long slots are provided at the front ends of the opposite surfaces of the two groups of processing frames 31, and a scalloped plate 32 is rotatably provided at the front end of the processing frame 31. A V-shaped slot is provided at the center of the rear end of the scalloped plate 32, and the inner wall of the V-shaped slot is roughened. Heat-conducting rollers 321 are provided at adjacent positions at the angle ends of the V-shaped slot on the side of the two groups of scalloped plates 32 away from each other. Two groups of auxiliary rotating gears 33 are meshed at the rear ends of the scalloped plates 32 inside the processing frame 31, and the rear ends of the two groups of auxiliary rotating gears 33 are meshed with the main rotating gear 34.

[0034] The opposite ends of the two sets of main rotating gears 34 extend to the outside of the processing frame 31 and are fixedly sleeved with transmission gears 35. The rear ends of the two sets of transmission gears 35 are meshed with long tooth rollers 36, and the shafts at one end of the long tooth rollers 36 extend to the inner wall of one side of the protective frame 2. A single-axis motor 37 is provided. A single-axis motor 38 is provided at the center of the top surface of one set of processing frames 31, and a spiral guide rod 39 is provided at the output end of the single-axis motor 38. A spiral sleeve 310 is fixedly installed at the center of the top surface of the other set of processing frames 31, and the spiral sleeve 310 is spirally sleeved on the outside of the spiral guide rod 39.

[0035] First, the wire core is introduced into the protective frame 2, and the wire core is first pre-processed by the pre-processing mechanism 3; the specific pre-processing operation includes: starting the single-axis motor 37 to drive the long-toothed roller 36 to rotate, the rotation of the long-toothed roller 36 drives the two sets of transmission gears 35 to engage and transmit, and then drives the two sets of main rotating gears 34 to rotate synchronously, and the rotation of the two sets of main rotating gears 34 drives the two sets of auxiliary rotating gears 33 to engage and transmit, and finally drives the two sets of round tooth plates 32 to rotate relative to each other until the V-shaped grooves of the two sets of round tooth plates 32 coincide with the open grooves of the processing frame 31, so that the wire core is clamped in the V-shaped grooves, thereby the wire core is clamped by the V-shaped grooves of the two sets of round tooth plates 32 to avoid slipping during the pre-processing process;

[0036] Subsequently, the two sets of scalloped plates 32 continue to rotate, using the V-shaped grooves to pre-treat the surface of the wire core and rub it to remove impurities and oil residue on the wire core. At the same time, the single-axis motor 2 38 is activated, driving the spiral guide rod 1 39 to rotate. The rotation of the spiral guide rod 1 39, in conjunction with the spiral sleeve 310, can drive one set of processing frames 31 to move left and right. During the movement, the scalloped plates 32 are used to correct the bent areas of the wire core.

[0037] The rotation of the scalloped plate 32 drives the heat-conducting roller 321 to rotate. The rotation of the heat-conducting roller 321 can evenly conduct heat to the surface of the wire core, thereby improving the stability of subsequent overmolding.

[0038] The setting of the pre-treatment mechanism 3 forces the wire core to undergo a series of fine pre-treatment operations before entering the overmolding stage, which greatly improves the quality and efficiency of overmolding. After the pre-treatment is completed, the wire core continues to enter the subsequent overmolding process;

[0039] It is worth mentioning that the top surface of the frame 1 is sequentially provided with a first molding frame 4, a second molding frame 5 and a connection processing mechanism 6. A material guide tube 401 is provided at the center of the top of the first molding frame 4 and the second molding frame 5, and a hot melt frame 402 is provided on the top of the material guide tube 401. A spiral extrusion rod 403 is vertically provided inside the hot melt frame 402, and the bottom of the spiral extrusion rod 403 extends into the inside of the material guide tube 401. The inner diameter of the tapered extrusion port of the second molding frame 5 is twice the inner diameter of the tapered extrusion port of the first molding frame 4.

[0040] The specific coating process includes: the pre-treated wire core enters the first molding frame 4, at this time the spiral extrusion rod 403 is started to drive the coating material inside the hot melt frame 402 into the guide tube 401, and the wire core is subjected to the initial coating treatment. The wire core that has undergone the initial coating treatment enters the second molding frame 5 for the second coating treatment. Finally, the wire core that has undergone the second coating treatment can be discharged through the connection processing mechanism 6.

[0041] Example 2: Please refer to Figure 2 、 Figure 6 and Figure 7 As shown, the connection processing mechanism 6 includes two groups of concave positioning frames 61 fixedly mounted on the top surface of the frame 1. The two groups of positioning frames 61 are staggered and arranged at adjacent positions of the first forming frame 4 and the second forming frame 5, and the positioning frames 61 are internally provided with limit gears 62 at the front and rear ends and the bottom center. A dual-axis motor 1 63 is commonly provided between the limit gears 62 located at the bottom of the two groups of positioning frames 61. The three groups of limit gears 62 are commonly meshed and connected with a gear ring frame 64.

[0042] A horizontal frame 65 is provided on the inner wall of the top of the gear ring frame 64. A dual-axis motor 66 is provided at the bottom of the horizontal frame 65 through the machine base. Two spiral guide rods 67 with opposite threads are fixedly mounted on both ends of the dual-axis motor 66. The two sets of spiral guide rods 67 are spirally sleeved on the outside of the two sets of spiral guide rods 67. Several sets of rollers 69 are embedded in the opposite surfaces of the two sets of clamping frames 68 at equal distances. The spacing between the two sets of clamping frames 68 in one gear ring frame 64 is twice the spacing between the two sets of clamping frames 68 in the other gear ring frame 64.

[0043] After the initial coating, the cable core first passes through the interior of the adjacent gear ring frame 64, and then passes through the two adjacent groups of clamping frames 68 and the two adjacent groups of cooling vertical frames 611. The dual-axis motor 66 drives the spiral guide rod 67 to rotate in the opposite direction, forcing the clamping frames 68 to move toward or away from each other to adjust the clamping force of the cable core, and forcing the two sides of the cable core to be respectively clamped at the gap between the two adjacent groups of rollers 69, and the curved surface of the roller 69 is in contact with the outer wall of the cable core.

[0044] At this time, the dual-axis motor 1 63 is started to drive the limiting gear 62 on the bottom layer of the inner wall of the positioning frame 61 to engage, and the limiting gear 62 is engaged with the gear ring frame 64 to realize the synchronous rotation of the gear ring frame 64 and its internal structure as well as the remaining limiting gears 62. The horizontal frame 65 of the gear ring frame 64 and the dual-axis motor 2 66 rotate accordingly, ensuring that the clamping frame 68 and the roller shaft 69 always rotate around the center of the cable core, so as to achieve comprehensive and uniform rolling of the cable core and keep the outer wall of the cable core smooth after the initial coating material.

[0045] Subsequently, the cable core continues to move forward and enters the second forming frame 5 for further coating. Similarly, the cable core extruded through the second forming frame 5 enters another set of toothed ring frames 64 in sequence. Since the spacing between the two sets of clamping frames 68 inside this set of toothed ring frames 64 is twice that of the previous set, it adapts to the increase in diameter of the cable core after the secondary coating, ensuring smooth transmission of the cable core throughout the entire processing process and keeping the outer wall of the finished cable after the secondary coating material flat.

[0046] It is worth noting that a double-headed fan 610 is provided at the top of one side of each set of gear ring frames 64, and cooling vertical frames 611 are provided on one side of the gear ring frame 64 and at the front and rear ends of the double-headed fan 610, and the front and rear end ventilation pipes of the double-headed fan 610 are respectively fixedly connected to the top of the cooling vertical frames 611, and the two sets of cooling vertical frames 611 are mirror-symmetrical relative to the central axis of the gear ring frame 64, and ventilation mesh panels are embedded in the opposite surfaces of the two sets of cooling vertical frames 611.

[0047] After the cable core is initially and secondarily coated with materials and corrected, it is led out of the toothed ring frame 64 and sequentially passes through the intervals between adjacent groups of cooling vertical frames 611. The double-headed fan 610 also rotates with the toothed ring frame 64. The two groups of cooling vertical frames 611 always rotate around the center of the cable core. At this time, the double-headed fan 610 is started and sends air into the cooling vertical frames 611 through the ventilation pipes at the front and rear ends. The cold air in the cooling vertical frames 611 is blown toward the outer wall of the cable core through the ventilation mesh plate, so as to cool and shape the cable core after the initial and secondary coating.

[0048] During the cooling and shaping process, the cold air in the cooling vertical frame 611 can not only effectively reduce the temperature of the cable core and quickly shape it, but also can be evenly distributed through the ventilation mesh to ensure that all parts of the cable core receive the same cooling effect, thereby avoiding problems such as cable core deformation or uneven quality caused by uneven cooling;

[0049] The setting of the connection processing mechanism 6 not only ensures that the cable core always maintains the correct position and posture during the transmission process, but also improves the covering effect of the cable core, and can effectively reduce the damage to the outer wall of the cable core, thereby protecting the integrity of the cable core.

[0050] Working Principle: When in use, the present invention first introduces the pretreated wire core into the multi-stage linkage liquid-cooled cable core overmolding equipment. The pretreatment mechanism 3 first performs a fine pretreatment operation on the wire core. Through the rotation of the scalloped plate 32, the wire core is stably clamped in the V-shaped clamping groove, avoiding slippage during the pretreatment process. At the same time, the rotation of the scalloped plate 32 also drives the rotation of the heat-conducting roller 321, uniformly conducting heat on the surface of the wire core and improving the stability of the subsequent overmolding.

[0051] Subsequently, the wire core enters the first forming frame 4, and the spiral extruder 403 is started, driving the coating material inside the hot melt frame 402 into the guide tube 401 to perform the primary coating process on the wire core. The wire core after the primary coating process then enters the second forming frame 5 for the secondary coating process, and finally obtains the finished cable;

[0052] During the transmission of the cable core and the cable, the spiral guide rod 2 67 is driven by the dual-axis motor 2 66 to rotate in the opposite direction, and the clamping frame 68 moves toward or away from each other, thereby adjusting the clamping force on the cable core. At the same time, the dual-axis motor 1 63 drives the limiting gear 62 located at the bottom layer on the inner wall of the positioning frame 61 to engage, thereby realizing the synchronous rotation of the gear ring frame 64 and its internal structure and the remaining limiting gears 62, ensuring that the clamping frame 68 and the roller shaft 69 always rotate around the center of the cable core, realizing comprehensive and uniform rolling of the cable core, and maintaining the flatness of the outer wall of the cable core;

[0053] In addition, the double-headed fan 610 is started to blow cold air to the outer wall of the cable core through the ventilation mesh plate in the cooling vertical frame 611, cooling and shaping the cable core, thereby avoiding problems such as cable core deformation or uneven quality caused by uneven cooling;

[0054] In summary, the design of the multi-stage linkage liquid-cooled cable core overmolding equipment can achieve fine pretreatment of the core, efficient overmolding, and smooth transmission cooling and shaping treatment, greatly improving the overmolding quality and efficiency of the liquid-cooled cable core.

[0055] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage linkage liquid-cooled cable core overmolding device, comprising a frame (1) and a protective frame (2), characterized in that: The protective frame (2) is fixedly mounted on one side of the frame (1), and a pre-processing mechanism (3) is provided inside the protective frame (2), and a first forming frame (4), a second forming frame (5) and a connection processing mechanism (6) are sequentially provided on the top surface of the frame (1); The pre-processing mechanism (3) comprises two groups of processing frames (31) of gourd structure movably arranged inside the frame (1), long slots are arranged at the front ends of the opposite surfaces of the two groups of processing frames (31), and a round tooth plate (32) is rotatably arranged at the front end of the processing frame (31), a V-shaped slot is arranged at the center of the rear end of the round tooth plate (32), and the inner wall of the V-shaped slot is rough, a heat-conducting roller (321) is arranged at the adjacent position of the angle end of the V-shaped slot on the side of the two groups of round tooth plates (32) away from each other, and two groups of auxiliary rotating gears (33) are arranged at the rear end of the round tooth plate (32) inside the processing frame (31), and the rear ends of the two groups of auxiliary rotating gears (33) are meshed with the main rotating gear (34).

2. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 1, characterized in that: The opposite ends of the two groups of main rotating gears (34) extend to the outside of the processing frame (31) and are fixedly sleeved with a transmission gear (35); the rear ends of the two groups of transmission gears (35) are commonly engaged with a long tooth roller (36), and the shaft at one end of the long tooth roller (36) extends to the inner wall of one side of the protection frame (2) and is provided with a single-axis motor (37).

3. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 1, characterized in that: A second single-axis motor (38) is provided at the center of the top surface of one group of the processing frames (31), and a first spiral guide rod (39) is provided at the output end of the second single-axis motor (38); a spiral sleeve (310) is fixedly installed at the center of the top surface of the other group of the processing frames (31), and the spiral sleeve (310) is spirally sleeved on the outside of the first spiral guide rod (39).

4. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 1, characterized in that: A material guide tube (401) is provided at the center of the top of each of the first molding frame (4) and the second molding frame (5), and a hot melt frame (402) is provided at the top of the material guide tube (401). A spiral extrusion rod (403) is vertically provided inside the hot melt frame (402), and the bottom of the spiral extrusion rod (403) extends into the inside of the material guide tube (401). The inner diameter of the tapered extrusion port of the second molding frame (5) is twice the inner diameter of the tapered extrusion port of the first molding frame (4).

5. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 1, characterized in that: The connection processing mechanism (6) comprises two groups of concave positioning frames (61) fixedly mounted on the top surface of the frame (1), the two groups of positioning frames (61) are staggeredly arranged at adjacent positions of the first forming frame (4) and the second forming frame (5), and the positioning frames (61) are internally provided with limit gears (62) at the front and rear ends and the bottom center, a dual-axis motor (63) is commonly provided between the limit gears (62) located at the bottom of the two groups of positioning frames (61), and a gear ring frame (64) is commonly engaged and connected between the three groups of limit gears (62).

6. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 5, characterized in that: A transverse frame (65) is provided at the inner wall of the top of the gear ring frame (64), and a dual-axis motor (66) is provided at the bottom of the transverse frame (65) through the machine base, and two spiral guide rods (67) with opposite threads are fixedly installed at both ends of the dual-axis motor (66), and two groups of the spiral guide rods (67) are spirally sleeved on the outside with clamping frames (68), and the opposite surfaces of the two groups of the clamping frames (68) are respectively embedded with a plurality of groups of rollers (69) at equal distances.

7. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 5, characterized in that: The spacing between the two groups of clamping frames (68) inside one group of the gear ring frames (64) is twice the spacing between the two groups of clamping frames (68) inside the other group of the gear ring frames (64), and a double-headed fan (610) is provided at the top end of one side of each group of the gear ring frames (64).

8. The multi-stage linkage liquid-cooled cable core overmolding equipment according to claim 4, characterized in that: A cooling vertical frame (611) is provided on one side of the gear ring frame (64) and at the front and rear ends of the double-headed fan (610), and the front and rear end ventilation pipes of the double-headed fan (610) are respectively fixedly connected to the top of the cooling vertical frame (611). The two groups of cooling vertical frames (611) are mirror-symmetrical relative to the central axis of the gear ring frame (64), and ventilation mesh plates are embedded in the opposite surfaces of the two groups of cooling vertical frames (611).

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