Hollow composite insulator solid glue injection core mold

Abstract

The present application relates to the technical field of mould, disclose a kind of hollow composite insulator solid glue injection core mould, comprising: mould core body, inside is provided with inner heating mechanism, for from mould core body inside to outside heating;The inner heating mechanism includes spiral heat pipe, straight-through pipe, sensor and heat supply component, the spiral heat pipe is located in mould core body inside and is closely attached with its inner wall;Two the straight-through pipe is respectively connected at the one-third and two-thirds of the length direction of spiral heat pipe, and is communicated with spiral heat pipe;The present application is directly supplemented by injecting high-temperature medium to low-temperature section by setting straight-through pipe and guide head, and combining sensor detection and control, when temperature difference appears in different sections of core mould, the time of medium spiral flow in spiral heat pipe is saved, so that local area is heated and compensated quickly and accurately, the temperature uniformity of core mould as a whole is significantly improved, and the solidification defects caused by uneven temperature are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of molds, more particularly, to a hollow composite insulator solid glue injection core mold. BACKGROUND

[0002] Hollow composite insulators are widely used in power systems, and in the manufacturing process, solid glue injection molding is a key link. In the solid glue injection molding process, temperature control of the core mold is crucial to product quality.

[0003] In the traditional internal circulation heating mode, high-temperature heat-conducting medium usually enters from one end, flows along the spiral or straight-through pipe, and then flows out from the other end.

[0004] Because the medium gradually loses heat during the flow process, there is a temperature gradient in different regions of the core mold, especially in the end region or the region far from the liquid inlet end, the temperature is often low. This temperature non-uniformity can cause uneven solidification of the solid glue, affecting the mechanical and electrical properties of the insulator, and even producing defects such as bubbles and cracks. Therefore, we propose a hollow composite insulator solid glue injection core mold. SUMMARY

[0005] The present application provides a hollow composite insulator solid glue injection core mold, which solves the technical problem of uneven temperature in the related art, which can cause uneven solidification of the solid glue, affect the mechanical and electrical properties of the insulator, and even produce defects such as bubbles and cracks.

[0006] The present application provides a hollow composite insulator solid glue injection core mold, comprising: a mold core body, which is internally provided with an internal heating mechanism for heating from the inside of the mold core body to the outside;

[0007] The internal heating mechanism comprises a spiral heat pipe, a straight-through pipe, a sensor and a heat supply assembly, the spiral heat pipe is arranged in the mold core body and tightly adheres to the inner wall thereof; two straight-through pipes are respectively connected to one-third and two-thirds of the length direction of the spiral heat pipe and are in communication with the spiral heat pipe;

[0008] The straight-through pipe and the spiral heat pipe are connected with the heat supply assembly, and the outlet end of each straight-through pipe and the spiral heat pipe is provided with a guide head, and the sensor is installed on the inner wall of the mold core body;

[0009] In use, the heat supply assembly supplies high-temperature heat-conducting medium to the spiral heat pipe to heat the mold core body, and the sensor detects the temperature of different sections. When there is a temperature difference between the end section and the liquid inlet end section of the mold core body, the straight-through pipe at the corresponding position directly supplements and injects high-temperature medium into the low-temperature section through the guide head, realizing local temperature control compensation.

[0010] Furthermore, a core mold plug is provided inside the top end of the mold core, and a positioning post is fixedly provided at the center of the core mold plug. There are two core mold plugs, which are respectively provided inside the two top ends of the mold core. Both core mold plugs are detachable structures.

[0011] Furthermore, the heating component includes a mold temperature controller accessory, which is inserted into and fixedly connected to the positioning post. The center lines of the mold temperature controller accessory, the core mold plug head, and the mold core coincide with each other. The top of the mold temperature controller accessory, away from the mold core, is provided with a liquid inlet pipe head and a liquid return pipe head.

[0012] Furthermore, the side wall of the core mold plug is fixedly provided with an inlet connector and a return connector, and the inlet connector is fixedly connected to the outlet end of the inlet pipe head, and the return connector is fixedly connected to the near end of the return pipe head.

[0013] Furthermore, the interior of the core mold plug head is divided into four independent spaces, and each space is designed with a main flow control valve. Three of the four main flow control valves are connected to the liquid inlet connector, while the other main flow control valve is connected to the liquid return connector. Two of the three main flow control valves connected to the liquid inlet connector are respectively connected to two straight pipes.

[0014] Furthermore, the inlet end of the spiral heat pipe is provided with an injection pipe, which is connected to one of the three main flow control valves connected to the inlet connector. The outlet end of the spiral heat pipe is provided with a return pipe, which is connected to the only main flow control valve connected to the return connector.

[0015] Furthermore, the two straight pipes are a first liquid inlet pipe and a last liquid inlet pipe, respectively. The first liquid inlet pipe is connected at one-third of the length of the spiral heat pipe, and the last liquid inlet pipe is connected at two-thirds of the length of the spiral heat pipe. Both the first liquid inlet pipe and the last liquid inlet pipe are interconnected with their respective main flow control valves.

[0016] Furthermore, the guide head consists of two sets of retractable plates, a second set of retractable plates, and a fixed base plate. The two sets of retractable plates are the sidewalls of the guide head. The retractable plates are rotatably connected to each other. The retractable plates are rotatably connected to the fixed base plate and the top wall of the guide head, respectively. The orientation of the guide head is the same as the direction of liquid flow in the spiral heat pipe. The liquid inlet end of the guide head is provided with a flexible hose head, and the flexible hose head is fixedly connected to the liquid outlet end of the straight pipe.

[0017] Furthermore, a solid bladder base plate is provided on the side of the guide head away from the liquid outlet end, and an expansion plug is fixedly provided on the upper wall of the solid bladder base plate. A flow-stopping pipe is fixedly connected to the liquid inlet end of the expansion plug, and a secondary flow control valve is provided at the end of the flow-stopping pipe away from the expansion plug. The two secondary flow control valves are respectively connected to the liquid inlet connector.

[0018] Furthermore, the top of the mold temperature controller accessory is also equipped with a sensor control terminal connected to a control terminal, which is connected to all the main flow control valves, secondary flow control valves and sensors via wires.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention, by setting up a straight pipe and a guide head, and combining sensor detection and control, can directly inject high-temperature medium into the low-temperature section when temperature differences occur in different sections of the core mold. This eliminates the time for the medium to spiral flow in the spiral heat pipe, thereby quickly and accurately heating and compensating for local areas. This significantly improves the overall temperature uniformity of the core mold, avoids curing defects caused by uneven temperature, and improves the quality of insulator products.

[0021] By setting detachable core mold plugs and expansion plugs, and in conjunction with secondary flow control valves, a portion of the spiral heat pipe can be cut off according to actual needs, enabling segmented heating of different length sections of the core mold. This greatly enhances the applicability and flexibility of the core mold, allowing it to adapt to the manufacturing needs of insulators of different specifications and production processes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the mold core structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the spiral heat pipe structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the straight pipe structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the core mold plug head of the present invention;

[0027] Figure 6 This is a schematic diagram of the guide head structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the expansion structure of the expansion plug of the present invention;

[0029] Figure 8 This is the invention Figure 7 Enlarged diagram of point A in the middle.

[0030] In the diagram: 11. Mold core; 12. Core mold plug; 13. Positioning pin; 2. Internal heating mechanism; 21. Spiral heat pipe; 23. Return pipe; 24. Injection pipe; 25. Straight pipe; 251. First section liquid pipe; 252. Tail section liquid pipe; 26. Disconnected liquid pipe; 27. Sensor; 31. Liquid inlet connector; 32. Liquid return connector; 33. Main flow control valve; 34. Secondary flow control valve; 41. Mold temperature controller accessory; 42. Liquid inlet pipe connector; 43. Liquid return pipe connector; 51. Guide head; 52. Fixed head base plate; 53. Fixed bladder base plate; 54. Expansion plug; 55. Hose head; 56. Closing plate one; 57. Closing plate two; 61. Control terminal. Detailed Implementation

[0031] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0032] like Figures 1-8 As shown, a hollow composite insulator solid glue injection core mold includes: a mold core 11, which is provided with an internal heating mechanism 2 for heating from the inside of the mold core 11 to the outside;

[0033] The internal heating mechanism 2 includes a spiral heat pipe 21, a straight pipe 25, a sensor 27, and a heating assembly. The spiral heat pipe 21 is located inside the mold core 11 and is tightly fitted to its inner wall. The two straight pipes 25 are respectively connected to one-third and two-thirds of the length of the spiral heat pipe 21 and are connected to the spiral heat pipe 21.

[0034] Both the straight pipe 25 and the spiral heat pipe 21 are connected to the heating component. Each straight pipe 25 and spiral heat pipe 21 has a guide head 51 at the outlet end of the connection between the straight pipe 25 and the spiral heat pipe 21. The sensor 27 is installed on the inner wall of the mold core 11.

[0035] In use, a high-temperature heat transfer medium is supplied to the spiral heat pipe 21 through the heating component to heat the mold core 11, and the temperature of different sections is detected by the sensor 27. When there is a temperature difference between the end section and the liquid inlet section of the mold core 11, the straight pipe 25 at the corresponding position is controlled to directly inject high-temperature medium into the low-temperature section through the guide head 51 to achieve local temperature control compensation.

[0036] A core mold plug head 12 is provided inside the top of the mold core 11. A positioning post 13 is fixedly provided at the center of the core mold plug head 12. There are two core mold plug heads 12, which are respectively provided inside the two top ends of the mold core 11. Both core mold plug heads 12 are detachable structures.

[0037] The heating component includes a mold temperature controller accessory 41, which is inserted into and fixedly connected to the positioning post 13. The center lines of the mold temperature controller accessory 41, the core mold plug head 12, and the mold core 11 coincide with each other. The top of the mold temperature controller accessory 41 away from the mold core 11 is provided with a liquid inlet pipe head 42 and a liquid return pipe head 43.

[0038] The mandrel plug head 12 is fixedly provided with an inlet connector 31 and a return connector 32 on its side wall. The inlet connector 31 is fixedly connected to the outlet end of the inlet pipe 42, and the return connector 32 is fixedly connected to the near end of the return pipe 43.

[0039] The interior of the core mold plug head 12 is divided into four independent spaces, and each space is designed with a main flow control valve 33. Three of the four main flow control valves 33 are connected to the liquid inlet connector 31, while the other main flow control valve 33 is connected to the liquid return connector 32. Two of the three main flow control valves 33 connected to the liquid inlet connector 31 are respectively connected to two straight pipes 25.

[0040] The inlet end of the spiral heat pipe 21 is provided with an injection pipe 24, which is connected to one of the three main flow control valves 33 connected to the inlet connector 31. The outlet end of the spiral heat pipe 21 is provided with a return pipe 23, which is connected to the only main flow control valve 33 connected to the return connector 32.

[0041] The two straight pipes 25 are the first liquid passage pipe 251 and the last liquid passage pipe 252, respectively. The first liquid passage pipe 251 is connected at one-third of the length of the spiral heat pipe 21, and the last liquid passage pipe 252 is connected at two-thirds of the length of the spiral heat pipe 21. Both the first liquid passage pipe 251 and the last liquid passage pipe 252 are connected to their respective main flow control valves 33.

[0042] The guide head 51 consists of two sets of retractable plates 56 and 57, and a fixed base plate 52. The two sets of retractable plates 56 and 57 are the side walls of the guide head 51. The retractable plates 56 and 57 are rotatably connected. The retractable plates 56 and 57 are rotatably connected to the fixed base plate 52 and the top wall of the guide head 51, respectively. The orientation of the guide head 51 is the same as the liquid flow direction in the spiral heat pipe 21. The liquid inlet end of the guide head 51 is provided with a flexible hose head 55, and the flexible hose head 55 is fixedly connected to the liquid outlet end of the straight pipe 25.

[0043] A solid bladder base plate 53 is provided on the side of the guide head 51 away from the liquid outlet. An expansion plug 54 is fixedly provided on the upper wall of the solid bladder base plate 53. A flow-stopping pipe 26 is fixedly connected to the liquid inlet end of the expansion plug 54. A secondary flow control valve 34 is provided at the end of the flow-stopping pipe 26 away from the expansion plug 54. The two secondary flow control valves 34 are respectively connected to the liquid inlet connector 31.

[0044] The top of the mold temperature controller accessory 41 is also equipped with a control terminal of sensor 27, which is connected to a control terminal 61. The control terminal 61 is connected to all the main flow control valves 33, secondary flow control valves 34 and sensor 27 via wires.

[0045] Sensor 27 monitors the temperature of each section in real time and transmits the data to control terminal 61. By analyzing the data, control terminal 61 automatically controls the opening and closing of main flow control valve 33 and secondary flow control valve 34, realizing fully automatic temperature monitoring and compensation, and ensuring the accuracy and intelligence of the heating process.

[0046] When in use, the staff first need to put the insulating tube in, and then use the hoisting equipment to hoist the mold core 11 into the outer mold of the hollow composite insulator injection molding equipment, so that the positioning post 13 is inserted into the positioning hole of the injection molding equipment and the mold core 11 is fixed.

[0047] When the mold core 11 and the insulating tube are all adjusted to the designated positions, the injection pipe of the mold temperature controller is connected to the inlet pipe 42, and the return pipe of the mold temperature controller is connected to the return pipe 43. The high-temperature liquid is injected into the inlet pipe 42 through the mold temperature controller. Then, the main control valve 33 connected to the injection pipe 24 and the main control valve 33 connected to the return pipe 23 are controlled by the control terminal 61. At this time, the high-temperature liquid passes through the inlet pipe 42, the inlet connector 31 and the injection pipe 24. Then, the high-temperature liquid flows along the spiral heat pipe 21. When the high-temperature liquid flows in the spiral heat pipe 21, it will gradually heat the mold core 11. Finally, the high-temperature liquid flowing in the spiral heat pipe 21 flows back to the mold temperature controller through the return pipe 23, the return connector 32 and the return pipe 43.

[0048] When the mold core 11 is heated, multiple sensors 27 detect the temperature of the inner wall of the mold core 11 and transmit the temperature data to the control terminal 61.

[0049] If there is a temperature difference between the third section of the mold core 11 and the first two sections, the control terminal 61 controls the corresponding main flow control valve 33 to work, so that the high-temperature liquid in the liquid inlet connector 31 flows into the tail liquid pipe 252, and then directly into the spiral heat pipe 21 of this section through the guide head 51, eliminating the spiral flow in the spiral heat pipe 21, thereby directly heating this section of the mold core 11. If the temperature of the second section of the mold core 11 does not reach the specified value, the first liquid pipe 251 is directly controlled to inject high-temperature liquid into the spiral heat pipe 21 of this section.

[0050] When the high-temperature liquid is injected directly into the spiral heat pipe 21 of the corresponding stage through the straight pipe 25, the high-temperature liquid first enters the guide head 51 through the hose head 55. As the high-temperature liquid rushes into the guide head 51, under the impact of the liquid, the first closing plate 56 and the second closing plate 57 stand up under the rotating shaft, causing the folded guide head 51 to unfold. The high-temperature liquid flows from the guide head 51 in the direction of liquid flow in the spiral heat pipe 21, while the fixed head base plate 52 is tightly fixed to the inner wall of the spiral heat pipe 21 to fix the entire guide head 51.

[0051] When the high-temperature liquid stops entering the guide head 51 from the straight pipe 25, the expanded guide head 51 is automatically closed by the increased flow of the high-temperature liquid in the spiral heat pipe 21 and the elastic force of the hose head 55 through the closing plate 1 56 and closing plate 2 57, thereby reducing the normal flow of the high-temperature liquid in the spiral heat pipe 21.

[0052] If only a small section of the mold core 11 is actually used, it is not necessary to heat the entire mold core 11. At this time, the corresponding secondary flow control valve 34 is controlled to work according to the needs, so that a part of the high-temperature liquid enters the expansion plug 54 through the interrupted flow pipe 26. As the liquid in the expansion plug 54 increases, the expansion plug 54 gradually expands. The spiral heat pipe 21 from the expansion plug 54 to the injection pipe 24 is cut off, and at the same time, the high-temperature liquid is controlled to be directly injected into the spiral heat pipe 21 from the straight pipe 25 corresponding to the expansion plug 54, thereby completing the segmented heating.

[0053] After injection molding and fluidization, the mold core 11 and the formed insulator are then lifted to other equipment using hoisting equipment. The mold core 11 is then pulled out of the insulating tube and can be reused.

[0054] The spiral heat pipe 21 fits tightly against the inner wall of the mold core 11, achieving uniform heating from the inside. Combined with the bidirectional connection design of the straight pipe 25 at one-third and two-thirds of its length, the guide head 51 enables precise injection of high-temperature medium, solving the problem of uneven heating in traditional core molds.

[0055] Sensor 27 monitors the temperature of each section in real time. When there is a temperature difference between the end and the liquid inlet, the control terminal 61 drives the corresponding straight pipe 25 to directly replenish the high-temperature medium to the low-temperature section through the guide head 51, so as to realize local temperature control compensation and avoid quality defects caused by temperature difference during the insulator curing process.

[0056] The core mold plug head 12 adopts a detachable dual structure, which, together with the positioning column 13, enables quick installation and positioning. At the same time, the mold temperature controller accessory 41 coincides with the center line of the core, ensuring the stability of the heating system.

[0057] The hierarchical control logic of the main flow control valve 33 and the auxiliary flow control valve 34: the three liquid inlet main flow control valves 33 are respectively connected to the injection pipe 24, the first liquid passage pipe 251, and the tail liquid passage pipe 252, and the liquid return main flow control valve 33 is connected to the return pipe 23, so as to realize the independent flow control of the spiral heat pipe 21 and the straight pipe 25.

[0058] The guide head 51 automatically unfolds / closes through the rotating structure of the first retracting plate 56 and the second retracting plate 57, which, together with the flexible hose head 55, reduces interference with the normal flow of the spiral heat pipe 21. At the same time, the expansion plug 54 achieves segmented heating by cutting off the flow pipe 26, which meets the segmented heating requirements of insulators of different lengths.

[0059] Installation and positioning: Hoist the mold core 11 into the outer mold, and insert the positioning pin 13 into the positioning hole of the injection molding equipment for fixation.

[0060] Piping connection: Reliably connect the outlet and inlet of the external mold temperature controller to the liquid inlet pipe 42 and the liquid return pipe 43, respectively.

[0061] Start the main heating cycle: The main control valve 33, which is connected to the injection pipe 24 and the return pipe 23, is opened through the control terminal 61. The high-temperature heat transfer medium is pumped in from the mold temperature controller and flows through the spiral heat pipe 21 to circulate and heat the mold core 11 as a whole.

[0062] Monitoring and Compensation: Sensor 27 monitors the temperature of the inner wall of the mold core 11 in real time. When the control terminal 61 detects that the temperature of a certain section, such as the second or third section, is too low, it immediately instructs the main control valve 33 on the corresponding straight pipe 25 to open, and the high-temperature medium is directly injected into the low-temperature section of the spiral heat pipe 21 through the guide head 51 to achieve rapid and accurate temperature compensation.

[0063] Segmented heating mode: If only a portion of the mold length needs to be heated, the secondary flow control valve 34 at the corresponding position is activated by the control terminal 61, causing the expansion plug 54 to expand and block the spiral heat pipe 21, and at the same time, the valve of the corresponding straight pipe 25 is opened, so that only the required section is heated independently.

[0064] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A solid adhesive injection mold for hollow composite insulators, characterized in that, include: The mold core (11) is provided with an internal heating mechanism (2) for heating from the inside of the mold core (11) to the outside; The internal heating mechanism (2) includes a spiral heat pipe (21), a straight pipe (25), a sensor (27), and a heating assembly. The spiral heat pipe (21) is located inside the mold core (11) and is tightly fitted to its inner wall. The two straight pipes (25) are respectively connected at one-third and two-thirds of the length of the spiral heat pipe (21) and are connected to the spiral heat pipe (21). The straight pipe (25) and the spiral heat pipe (21) are both connected to the heating assembly. The outlet end of each straight pipe (25) and spiral heat pipe (21) is provided with a guide head (51). The sensor (27) is installed on the inner wall of the mold core (11). The heating component includes a mold temperature controller accessory (41), and the top of the mold temperature controller accessory (41) away from the mold core (11) is provided with a liquid inlet pipe head (42) and a liquid return pipe head (43). The top of the mold core (11) is provided with a core mold plug head (12). The interior of the core mold plug head (12) is divided into four independent spaces, and each space is designed with a main control flow valve (33). The side wall of the core mold plug head (12) is fixedly provided with a liquid inlet connector (31) and a liquid return connector (32). The liquid inlet connector (31) is fixedly connected to the liquid outlet end of the liquid inlet pipe (42), and the liquid return connector (32) is fixedly connected to the liquid near end of the liquid return pipe (43). The two straight pipes (25) are a first liquid passage pipe (251) and a last liquid passage pipe (252), respectively. The first liquid passage pipe (251) is connected at one-third of the length of the spiral heat pipe (21), and the last liquid passage pipe (252) is connected at two-thirds of the length of the spiral heat pipe (21). The first liquid passage pipe (251) and the last liquid passage pipe (252) are both connected to their respective main flow control valves (33). The guide head (51) consists of two sets of retractable plates (56) and retractable plates (57) and a fixed head base plate (52). The two sets of retractable plates (56) and retractable plates (57) are the side walls of the guide head (51). The retractable plates (56) and retractable plates (57) are rotatably connected. The retractable plates (56) and retractable plates (57) are rotatably connected to the fixed head base plate (52) and the top wall of the guide head (51) respectively. The orientation of the guide head (51) is the same as the liquid flow direction in the spiral heat pipe (21). The liquid inlet end of the guide head (51) is provided with a flexible hose head (55), and the flexible hose head (55) is fixedly connected to the liquid outlet end of the straight pipe (25). A solid bladder base plate (53) is provided on the side of the guide head (51) away from the liquid outlet. An expansion plug (54) is fixedly provided on the upper wall of the solid bladder base plate (53). A flow-stopping pipe (26) is fixedly connected to the liquid inlet end of the expansion plug (54). A secondary flow control valve (34) is provided at the end of the flow-stopping pipe (26) away from the expansion plug (54). The two secondary flow control valves (34) are respectively connected to the liquid inlet connector (31). In use, a high-temperature heat transfer medium is supplied to the spiral heat pipe (21) through the heating component to heat the mold core (11), and the temperature of different sections is detected by the sensor (27). When there is a temperature difference between the end section and the liquid inlet section of the mold core (11), the straight pipe (25) at the corresponding position is controlled to directly inject high-temperature medium into the low-temperature section through the guide head (51) to achieve local temperature control compensation.

2. The hollow composite insulator solid adhesive injection mold according to claim 1, characterized in that, A positioning post (13) is fixedly provided at the center of the core mold plug (12). There are two core mold plugs (12), which are respectively located inside the two top ends of the mold core (11). Both core mold plugs (12) are detachable structures.

3. The hollow composite insulator solid adhesive injection mold according to claim 2, characterized in that, The mold temperature controller accessory (41) is inserted into the positioning post (13) and fixedly connected to the positioning post (13). The center lines of the mold temperature controller accessory (41), the core mold plug head (12) and the mold core (11) coincide with each other.

4. The hollow composite insulator solid adhesive injection mold according to claim 3, characterized in that, Of the four main flow control valves (33), three are connected to the inlet connector (31), while the other main flow control valve (33) is connected to the return connector (32). Two of the three main flow control valves (33) connected to the inlet connector (31) are respectively connected to two straight pipes (25).

5. The hollow composite insulator solid adhesive injection mold according to claim 4, characterized in that, The spiral heat pipe (21) is provided with an injection pipe (24) at the liquid inlet end. The injection pipe (24) is connected to one of the three main flow control valves (33) connected to the liquid inlet connector (31). The spiral heat pipe (21) is provided with a return pipe (23) at the liquid outlet end. The return pipe (23) is connected to the only main flow control valve (33) connected to the return liquid connector (32).

6. The hollow composite insulator solid adhesive injection mold according to claim 5, characterized in that, The top of the mold temperature controller accessory (41) is also provided with a sensor (27) whose control end is connected to a control terminal (61). The control terminal (61) is connected to all the main flow control valves (33), secondary flow control valves (34) and sensors (27) respectively through wires.

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