Insulator manufacturing mold

Abstract

The utility model discloses an insulator manufacturing mold, comprising: an upper mold assembly, the upper mold assembly is provided with a runner penetrating the upper and lower surfaces, the lower surface of the upper mold assembly is provided with a first groove and a first runner opening downward, one end of the first runner is connected to the upper end of the first groove, and the other end is connected to the runner; a lower mold assembly, the upper surface of the lower mold assembly is connected to the lower surface of the upper mold assembly, a parting surface is formed between the upper mold assembly and the lower mold assembly, the upper surface of the lower mold assembly is provided with a second groove and a second runner opening upward, the second groove is connected to the first groove and forms a mold cavity together, the second runner is connected to the first runner and is symmetrically arranged up and down relative to the parting surface, and the second runner is connected to the lower end of the second groove. The utility model can avoid the problem of insulator core rod offset, and the finished insulator has a high qualified rate.

Description

Technical Field

[0001] The utility model relates to the technical field of insulator production equipment, in particular to an insulator manufacturing mold. Background Art

[0002] Composite insulators are generally composed of three parts: an insulating core rod, a silicone rubber umbrella sleeve, and connecting hardware at both ends. The silicone rubber umbrella sleeve is usually molded onto the insulating core rod using an injection molding process. During this preparation and production process, a mold is often required.

[0003] The mold used to manufacture insulators usually includes a lower mold and an upper mold, the upper surface of the lower mold and the lower surface of the upper mold are parting surfaces, and the upper mold and the lower mold together form a mold cavity required for glue injection and filling. In existing molds, a glue injection channel is often set on the upper mold, and a diverter channel is set at the parting surface. The two ends of the diverter channel are connected to the glue injection channel and the mold cavity respectively. During the glue injection process, the glue flows from the glue injection channel to the diverter channel and flows into the mold cavity through the diverter channel.

[0004] The core rod needs to be placed in the mold cavity before glue injection, but the existing shunt channel is often set on one side of the mold cavity, that is, the shunt channel is located on the left or right side of the core rod. During the glue injection process, the flow of glue can easily deflect the core rod of the insulator, resulting in a low qualified rate of the finished insulators. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an insulator manufacturing mold.

[0006] The solution of the utility model to solve the technical problem is:

[0007] An insulator manufacturing mold, comprising:

[0008] An upper mold assembly, wherein the upper mold assembly is provided with a runner penetrating the upper and lower surfaces, and the lower surface of the upper mold assembly is provided with a first groove and a first runner opening downward, wherein one end of the first runner is connected to the upper end of the first groove, and the other end is connected to the runner;

[0009] A lower mold assembly, wherein the upper surface of the lower mold assembly is connected to the lower surface of the upper mold assembly, a parting surface is formed between the upper mold assembly and the lower mold assembly, the upper surface of the lower mold assembly is provided with a second groove and a second runner opening upward, the second groove is connected to the first groove and together form a mold cavity, the second runner is connected to the first runner and is symmetrically arranged up and down relative to the parting surface, and the second runner is connected to the lower end of the second groove.

[0010] The utility model has at least the following beneficial effects: a core rod can be placed in the mold cavity, and after glue is injected into the mold cavity through the runner, the inner wall surface of the mold cavity can shape the glue, so as to obtain an insulator product of a desired shape; due to the provision of a first branch channel and a second branch channel, the glue in the runner can be guided to the upper end and the lower end of the mold cavity, and the glue enters from the upper and lower ends of the mold cavity, and the upper glue and the lower glue can offset each other's impact force on the core rod located in the mold cavity, thereby avoiding the core rod being offset by the impact of the glue, improving the quality of the obtained insulator product, and improving the qualified rate of the product.

[0011] As a further improvement of the above technical solution, the first branch channel includes a first horizontal channel, a first inclined channel and a first vertical channel, the first horizontal channel is open downward, one end of the first horizontal channel is connected to the runner, and the other end is connected to the lower end of the first inclined channel, the first inclined channel extends upwardly and obliquely to the top of the first groove, the upper end of the first vertical channel is connected to the upper end of the first inclined channel, and the lower end of the first vertical channel is connected to the upper end of the first groove; the second branch channel includes a second horizontal channel, a second inclined channel and a second vertical channel, the second horizontal channel is open upward and communicated with the first horizontal channel, the upper end of the second inclined channel is connected to the second horizontal channel, the second inclined channel extends downwardly and obliquely to the bottom of the second groove, the lower end of the second vertical channel is connected to the lower end of the second inclined channel, and the upper end of the second vertical channel is connected to the lower end of the second groove.

[0012] Such an arrangement allows the rubber material of the runner to smoothly enter the mold cavity, allowing the rubber material to enter from the upper and lower ends of the mold cavity and fill the mold cavity as quickly as possible.

[0013] As a further improvement of the above technical solution, the diameter of the first vertical channel gradually increases from top to bottom; the diameter of the second vertical channel gradually increases from bottom to top. This arrangement allows the rubber to quickly pass through the first vertical channel and the second vertical channel into the mold cavity, quickly fill the mold cavity, and also allows the rubber to flow more steadily and smoothly.

[0014] As a further improvement of the above technical solution, the diameter of the runner increases gradually from top to bottom. Such an arrangement allows the rubber to quickly enter and fill the mold cavity and prevents the rubber in the mold cavity from flowing back.

[0015] As a further improvement of the above technical solution, the connection between the runner and the first runner is connected by an arc, which can make the connection between the runner and the first horizontal channel smoother, which is conducive to the flow of the rubber material and improves the quality of the finished insulator.

[0016] As a further improvement of the above technical solution, the lower mold assembly is provided with a cold slug hole with an upward opening, the cold slug hole is connected with the second runner and is located on the same straight line as the runner. The cold slug hole can store the cold slug head generated during the interval of injecting the rubber material to prevent the cold slug from entering the mold cavity, so as to ensure the quality of the finished insulator.

[0017] As a further improvement of the above technical solution, the lower mold assembly is further provided with an exhaust groove opening upward, and the exhaust groove is arranged on the left and right sides of the second groove. The provision of the exhaust groove can effectively solve the exhaust problem of the insulator manufacturing mold and avoid the accumulation of gas in the mold cavity to affect the quality of the finished insulator.

[0018] As a further improvement of the above technical solution, two mold cavities are symmetrically arranged on the left and right sides of the runner, two first runners are symmetrically arranged on the left and right sides of the runner, the two first runners are respectively connected to the upper ends of the two mold cavities, and two second runners are respectively connected to the lower ends of the two mold cavities. In this way, two mold cavities can be filled with glue through one runner, so that two finished insulators can be manufactured at the same time, improving the efficiency of insulator manufacturing.

[0019] As a further improvement of the above technical solution, the insulator manufacturing mold further includes an upper shell, a lower shell and a core rod, the upper shell is connected to the lower shell and together forms a cavity, the upper mold assembly and the lower mold assembly are arranged in the cavity, the core rod is arranged in the mold cavity, and the front and rear ends of the core rod are connected to the inner wall surface of the cavity. Such an arrangement can realize the fixation of the core rod, the upper mold assembly and the lower mold assembly, and the mold closing is convenient and has high stability.

[0020] As a further improvement of the above technical solution, the upper mold assembly and the lower mold assembly are both provided with a plurality of them, and the number of the upper mold assembly and the number of the lower mold assembly are the same. In this way, multiple runners can be injected with glue at the same time, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the insulator manufacturing mold of the embodiment of the utility model;

[0023] Figure 2It is a schematic diagram of the internal arrangement of the insulator manufacturing mold according to an embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the arrangement of a group of umbrella leaf modules according to an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a group of pouring modules of an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the internal structure of the pouring module of the embodiment of the utility model.

[0027] Figure numerals: 100, upper shell; 200, lower shell; 300, core rod; 400, upper mold assembly; 410, runner; 420, first horizontal channel; 430, first inclined channel; 440, first vertical channel; 500, lower mold assembly; 510, cold material hole; 520, second horizontal channel; 530, second inclined channel; 540, second vertical channel; 550, exhaust groove; 600, mold cavity; 700, umbrella leaf module. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0033] Reference Figures 1 to 5 The embodiment of the utility model provides an insulator manufacturing mold, which can avoid the problem of the insulator core rod 300 being offset, and the finished insulators manufactured have a high pass rate.

[0034] In this embodiment, the insulator manufacturing mold includes an upper mold assembly 400 and a lower mold assembly 500. The lower surface of the upper mold assembly 400 is detachably connected to the upper surface of the lower mold assembly 500. A parting surface is formed between the upper mold assembly 400 and the lower mold assembly 500. After the insulator is manufactured using the insulator manufacturing mold of this embodiment, the finished insulator can be demolded and removed by separating the upper mold assembly 400 and the lower mold assembly 500.

[0035] It is understandable that the upper mold assembly 400 and the lower mold assembly 500 can be detachably connected by connecting parts such as screws.

[0036] The lower surface of the upper mold assembly 400 is provided with a first groove, and the upper surface of the lower mold assembly 500 is provided with a second groove, the first groove is opened downward, and the second groove is opened upward, when the upper mold assembly 400 and the lower mold assembly 500 are molded together, the first groove and the second groove are connected to each other and jointly form a mold cavity 600. It can be understood that the mold cavity 600 is used to place the core rod 300 and shape the rubber material to produce a finished insulator of a desired shape.

[0037] The upper mold assembly 400 is provided with a runner 410, which runs through the upper and lower surfaces of the upper mold assembly 400. The upper end of the runner 410 is a gate, through which the operator can inject the rubber material, and the rubber material can flow downward along the runner 410. It can be understood that the runner 410 is provided on the left or right side of the mold cavity 600.

[0038] In this embodiment, the upper mold assembly 400 is also provided with a first branch channel, which is opened downward, one end of the first branch channel is connected to the upper end of the first groove and communicated with the first groove, and the other end of the first branch channel is communicated with the runner 410. The rubber flowing along the runner 410 can flow along the first branch channel to the first groove, and flow into the mold cavity 600 from the upper end of the first groove.

[0039] The lower mold assembly 500 is also provided with a second branch channel, which is opened upward, one end of the second branch channel is connected to the lower end of the second groove and is communicated with the second groove, while the other end of the second branch channel is communicated with the first branch channel. The first branch channel and the second branch channel are symmetrically arranged up and down relative to the parting surface. The rubber material flowing into the first branch channel along the runner 410 can enter the second branch channel, flow along the second branch channel to the lower end of the second groove, and enter the mold cavity 600 from the lower end of the second groove.

[0040] It is understandable that the rubber enters the mold cavity 600 from both ends at the same time, and the rubber above and the rubber below can offset each other's impact on the core rod 300 in the mold cavity 600, thereby avoiding the deviation of the core rod 300.

[0041] It can be understood that the first branch channel and the second branch channel guide the rubber material to the upper and lower ends of the mold cavity 600 respectively, and the first branch channel and the second branch channel can be arc-shaped channels or zigzag-line channels.

[0042] In this embodiment, the first and second flow channels are zigzag channels. The first flow channel includes a first vertical channel 440 , a first inclined channel 430 and a first horizontal channel 420 , while the second flow channel includes a second vertical channel 540 , a second inclined channel 530 and a second horizontal channel 520 .

[0043] The first horizontal channel 420 is extended in the left-right direction and opened downward. One end of the first horizontal channel 420 is connected to the lower end of the runner 410, and the other end is connected to the lower end of the first inclined channel 430. The first inclined channel 430 extends upward to the top of the first groove, and the upper end of the first vertical channel 440 is connected to the upper end of the first inclined channel 430. The first vertical channel 440 extends in the up-down direction, and the angle between the first inclined channel 430 and the first vertical channel 440 is an acute angle. The lower end of the first vertical channel 440 is connected to the upper end of the first groove, thereby realizing the communication between the runner 410 and the upper end of the first groove.

[0044] The second runner and the first runner are symmetrically arranged with respect to the parting surface. Specifically, the second horizontal channel 520 extends in the left-right direction and opens upward. The second horizontal channel 520 is connected to the first horizontal channel 420. One end of the second horizontal channel 520 is connected to the runner 410, and the other end is connected to the upper end of the second inclined channel 530. The second inclined channel 530 extends downwardly to the bottom of the second groove, and the lower end of the second inclined channel 530 is connected to the lower end of the second vertical channel 540. The second vertical channel 540 extends in the up-down direction, and the upper end of the second vertical channel 540 extends upward to the second groove. The angle between the second inclined channel 530 and the second vertical channel 540 is an acute angle, and the upper end of the second vertical channel 540 is connected to the lower end of the second groove, so as to achieve the communication between the runner 410 and the lower end of the second groove.

[0045] It can be understood that such a configuration allows the rubber material to smoothly enter the mold cavity 600 and fill the mold cavity 600 as quickly as possible.

[0046] In this embodiment, the diameter of the first vertical channel 440 gradually increases from top to bottom, presenting a cone structure with the tip pointing upward, while the diameter of the second vertical channel 540 gradually decreases from top to bottom, presenting a cone structure with the tip pointing downward.

[0047] It is understandable that the cross-sectional area of ​​the first vertical channel 440 is the smallest at the connection with the first inclined channel 430, so the rubber can quickly enter the first vertical channel 440 and flow downward, quickly filling the mold cavity 600 with the rubber, and also avoiding the backflow of the rubber in the mold cavity 600.

[0048] In addition, such a configuration can also avoid a sudden change in the flow cross section at the connection between the first vertical channel 440 and the first inclined channel 430, ensuring a smooth transition of the flow cross section of the entire first branch channel, allowing the rubber to flow more steadily and smoothly.

[0049] Similarly, the cross-street area of ​​the second vertical channel 540 at the connection with the second inclined channel 530 is the smallest, and the rubber can quickly enter the second vertical channel 540 and flow upward to quickly fill the mold cavity 600. It can also avoid the backflow of the rubber in the mold cavity 600 and the sudden change of the flow cross section at the connection between the second vertical channel 540 and the second inclined channel 530, so that the rubber can flow more steadily and smoothly, reducing defects such as bubbles and cracks in the finished insulator.

[0050] In this embodiment, the diameter of the runner 410 gradually increases from top to bottom, that is, the cross-sectional area at the gate is the smallest. It can be understood that, with such a configuration, the flow rate of the rubber at the gate is the largest, and the rubber can quickly enter and fill the mold cavity 600. After filling the mold cavity 600, the rubber at the gate can be quickly solidified to achieve the closure of the mold cavity 600 and prevent the rubber in the mold cavity 600 from flowing back.

[0051] In some embodiments, the connection between the runner 410 and the first runner is connected by an arc, that is, the first horizontal channel 420 is connected to the lower end of the runner 410 by an arc. It can be understood that such a setting can make the connection between the runner 410 and the first horizontal channel 420 smoother, which is conducive to the flow of the rubber.

[0052] In some embodiments, a cold material well 510 is provided below the runner 410. The cold material well 510 is located at the lower mold assembly 500 and is opened upward. The cold material well 510 is connected to the second branch channel. When the upper mold assembly 400 and the lower mold assembly 500 are closed, the cold material well 510 and the runner 410 are located on the same straight line.

[0053] It can be understood that the cold material cavity 510 can store the cold material head generated during the interval of injecting the rubber material to prevent the cold material from entering the mold cavity 600, so as to ensure the quality of the finished insulator.

[0054] In some embodiments, in order to timely exhaust the gas in the mold cavity 600, an exhaust groove 550 is provided on the upper surface of the lower mold assembly 500, and the exhaust groove 550 is opened upward.

[0055] It is understandable that during the injection molding process, in addition to the air in the mold cavity 600 and the pouring system such as the runner 410, the first branch channel, the second branch channel, etc., the rubber will also evaporate some gases when it is heated or solidified. If these gases cannot be discharged smoothly, the gas will be compressed and generate high temperature, which may cause local carbonization and burning of the product, the generation of bubbles, poor welding of the rubber, etc.

[0056] The exhaust groove 550 is provided at the parting surface and the matching clearance of the parting surface is utilized, so that the exhaust difficulty problem can be effectively solved, thereby ensuring the quality of the obtained insulator product.

[0057] In this embodiment, an exhaust groove 550 is disposed on both sides of the second groove to ensure good exhaust effects on both sides of the mold cavity 600.

[0058] In some embodiments, two mold cavities 600 are symmetrically arranged on the left and right sides of the runner 410, and two first branch channels are symmetrically arranged, and the two first branch channels are respectively connected to the upper ends of the two mold cavities 600, and two second branch channels are correspondingly arranged, and the two second branch channels are respectively connected to the lower ends of the two mold cavities 600.

[0059] It is understandable that, with such an arrangement, two mold cavities 600 can be filled with glue through one runner 410 , so that two finished insulator products can be manufactured at the same time, thereby improving the efficiency of insulator manufacturing.

[0060] In some embodiments, the insulator manufacturing mold further includes a core rod 300, an upper shell 100 and a lower shell 200. The lower surface of the upper shell 100 is provided with an upper cavity, and the upper surface of the lower shell 200 is provided with a lower cavity. When the lower surface of the upper shell 100 is connected to the upper surface of the lower shell 200, the upper cavity and the lower cavity can jointly form a cavity for placing the upper mold assembly 400 and the lower mold assembly 500. During installation, the core rod 300 is inserted into the mold cavity 600, and the front and rear ends of the core rod 300 extend out of the front and rear ends of the mold cavity 600 respectively, and are connected to the inner wall surface of the cavity.

[0061] In this embodiment, the upper shell 100 and the lower shell 200 are separable, and a card groove is provided on the inner wall surface of the cavity. After the core rod 300 is placed in the second groove, the upper mold assembly 400 and the lower mold assembly 500 are molded, and the lower mold assembly 500 is arranged in the lower cavity. The core rod 300 can be clamped in the card groove. The upper shell 100 is above the lower shell 200, so that the upper mold assembly 400 is located in the upper cavity, thereby realizing the fixation of the core rod 300, the upper mold assembly 400 and the lower mold assembly 500, and the mold closing is convenient and the stability is high.

[0062] It can be understood that the upper mold assembly 400 and the lower mold assembly 500 casting module, for the insulator manufacturing mold for manufacturing composite insulators, in addition to the casting module formed by the upper mold assembly 400 and the lower mold assembly 500, a plurality of umbrella leaf modules 700 are also provided in the cavity, each umbrella leaf module 700 includes an upper module and a lower module, the upper module and the lower module together form a cavity, the plurality of umbrella leaf modules 700 are arranged in the front-to-back direction, the casting module is arranged at the front side or the rear side of the umbrella leaf module 700, the mold cavity 600 is connected to the mold cavity, and the core rod 300 is inserted into the mold cavity 600 and the plurality of mold cavities arranged in the front-to-back direction. The insulator manufacturing mold can be used to manufacture a finished insulator with a plurality of umbrella leaves.

[0063] In some embodiments, a plurality of groups of umbrella leaf modules 700 are disposed in a cavity formed by the upper shell 100 and the lower shell 200 , and the plurality of groups of umbrella leaf modules 700 are arranged in a left-right direction or a front-back direction.

[0064] In this embodiment, six groups of leaf modules 700 are provided, forming a matrix of three groups in the front and three groups in the back in the cavity. Each leaf module 700 is provided with two cavities. Each group of leaf modules 700 can hold two core rods 300, that is, each group of leaf modules 700 can produce two finished insulators. The entire insulator production mold can hold 12 core rods 300 and produce 12 insulators at the same time, thereby improving the efficiency of large-scale production.

[0065] It can be understood that each group of umbrella leaf modules 700 is matched with at least one casting module.

[0066] When multiple sets of umbrella leaf modules 700 are provided, there are multiple casting modules, that is, multiple upper mold assemblies 400 and multiple lower mold assemblies 500 are provided. It can be understood that the upper mold assembly 400 and the lower mold assembly 500 are matched and arranged, and the number of the upper mold assembly 400 and the lower mold assembly 500 should be consistent.

[0067] In some embodiments, each group of leaf modules 700 is matched with multiple casting modules, and several leaf modules 700 are arranged between two adjacent casting modules. Glue injection is performed through multiple casting modules to improve the injection efficiency and make the injection molding of the same insulator product more uniform.

[0068] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An insulator manufacturing mold, characterized in that: include: An upper mold assembly, wherein the upper mold assembly is provided with a runner penetrating the upper and lower surfaces, and the lower surface of the upper mold assembly is provided with a first groove and a first runner opening downward, wherein one end of the first runner is connected to the upper end of the first groove, and the other end is connected to the runner; A lower mold assembly, wherein the upper surface of the lower mold assembly is connected to the lower surface of the upper mold assembly, a parting surface is formed between the upper mold assembly and the lower mold assembly, the upper surface of the lower mold assembly is provided with a second groove and a second runner opening upward, the second groove is connected to the first groove and together form a mold cavity, the second runner is connected to the first runner and is symmetrically arranged up and down relative to the parting surface, and the second runner is connected to the lower end of the second groove.

2. The insulator manufacturing mold according to claim 1, characterized in that: The first runner includes a first horizontal channel, a first inclined channel and a first vertical channel. The first horizontal channel is open downward, one end of the first horizontal channel is connected to the runner, and the other end is connected to the lower end of the first inclined channel. The first inclined channel extends upwardly and obliquely to the top of the first groove. The upper end of the first vertical channel is connected to the upper end of the first inclined channel, and the lower end of the first vertical channel is connected to the upper end of the first groove. The second runner includes a second horizontal channel, a second inclined channel and a second vertical channel. The second horizontal channel is open upward and communicated with the first horizontal channel. The upper end of the second inclined channel is connected to the second horizontal channel. The second inclined channel extends downwardly and obliquely to the bottom of the second groove. The lower end of the second vertical channel is connected to the lower end of the second inclined channel, and the upper end of the second vertical channel is connected to the lower end of the second groove.

3. The insulator manufacturing mold according to claim 2, characterized in that: The diameter of the first vertical channel gradually increases from top to bottom; the diameter of the second vertical channel gradually increases from bottom to top.

4. The insulator manufacturing mold according to claim 1, characterized in that: The diameter of the runner increases gradually from top to bottom.

5. The insulator manufacturing mold according to claim 1, characterized in that: The connection between the runner and the first runner is connected by an arc.

6. The insulator manufacturing mold according to claim 1, characterized in that: The lower mold assembly is provided with a cold material well opening upward, the cold material well is communicated with the second branch runner and is located on the same straight line as the runner.

7. The insulator manufacturing mold according to claim 1, characterized in that: The lower mold assembly is also provided with an exhaust groove opening upward, and the exhaust groove is arranged on the left and right sides of the second groove.

8. The insulator manufacturing mold according to claim 1, characterized in that: Two mold cavities are symmetrically arranged on the left and right sides of the runner, two first branch channels are symmetrically arranged on the left and right sides of the runner, the two first branch channels are respectively connected to the upper ends of the two mold cavities, and two second branch channels are respectively connected to the lower ends of the two mold cavities.

9. The insulator manufacturing mold according to claim 1, characterized in that: It also includes an upper shell, a lower shell and a core rod, the upper shell is connected to the lower shell and together form a cavity, the upper mold assembly and the lower mold assembly are arranged in the cavity, the core rod is arranged in the mold cavity, and the front and rear ends of the core rod are connected to the inner wall surface of the cavity.

10. The insulator manufacturing mold according to claim 1, characterized in that: The upper mold assembly and the lower mold assembly are each provided with a plurality, and the number of the upper mold assembly and the number of the lower mold assembly are the same.

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