Insulator thermoplastic forming device and process

Abstract

The present invention relates to the technical field of insulator production, and proposes an insulator thermoplastic molding device and process, wherein an insulator thermoplastic molding device includes a frame, an upper mold, a lower mold, an intermediate frame, a core column and an adjusting sleeve, wherein the upper mold and the lower mold are both slidably arranged on the frame, the intermediate frame is lifted and slidably arranged relative to the lower mold, the intermediate frame is located between the upper mold and the lower mold, and a molding cavity is formed between the upper mold, the intermediate frame and the lower mold; the core column and the adjusting sleeve are both slidably arranged on the intermediate frame, there are multiple adjusting sleeves, the diameter increases step by step, and they are slidably sleeved on the core column in turn, and the core column and the adjusting sleeve slide into or out of the molding cavity. Through the above technical scheme, the problem that the mold needs to be replaced when the diameter size requirement of the insulator resistor rod changes in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of insulator production, and in particular to an insulator thermoplastic molding device and process. Background Art

[0002] In the field of insulator production, thermoplastic molding is a common manufacturing process. As an electrical insulation component, the structure of the insulator usually requires a resistor rod to be inserted in the center to meet specific electrical performance requirements.

[0003] In existing thermoplastic molding devices, in order to achieve the integration of the resistor rod in the insulator, a core mold corresponding to the resistor rod is usually set in the center of the cavity in the design of the injection molding cavity. This core mold is a key part of the mold, which determines the position and dimensional accuracy of the resistor rod in the insulator. When market demand changes or product design is adjusted, resulting in changes in the diameter size requirements of the resistor rod, the existing solution is mainly to replace the entire mold or replace the core mold part of the mold. This method has many disadvantages:

[0004] The design, manufacturing and procurement costs of molds are high, especially for high-precision molds. Frequent mold replacement requires continuous investment. And mold replacement is a complicated and time-consuming process. It is necessary to stop the current production process, dismantle the old mold, install the new mold, and perform a series of debugging work to ensure that the new mold can operate normally. This process may cause long-term downtime of production equipment, seriously affecting production efficiency.

[0005] The existing technology has not solved the above problems well, which has brought troubles to the normal work in this field. Therefore, there is an urgent need for an insulator thermoplastic molding device and process to solve the above problems. Summary of the invention

[0006] The present invention provides an insulator thermoplastic molding device and process, which solves the problem in the related art that when the diameter size requirement of the insulator resistance rod changes, the mold needs to be replaced.

[0007] The technical solution of the present invention is as follows: an insulator thermoplastic molding device, comprising a frame, an upper mold, a lower mold, an intermediate frame, a core column and an adjusting sleeve, the upper mold and the lower mold are both slidably arranged on the frame, the intermediate frame is lifted and slidably arranged relative to the lower mold, the intermediate frame is located between the upper mold and the lower mold, and a molding cavity is formed between the upper mold, the intermediate frame and the lower mold;

[0008] The core column and the adjusting sleeve are both slidably arranged on the intermediate frame. There are multiple adjusting sleeves with gradually increasing diameters, which are slidably arranged on the core column in sequence. The core column and the adjusting sleeve slide into or out of the forming cavity.

[0009] Optionally, it also includes a sliding cross bar, which is slidably arranged relative to the middle frame. The sliding cross bar has a positioning hole, which is used to accommodate the end of the core column. After the sliding cross bar slides, the end of the core column enters or leaves the positioning hole.

[0010] Optionally, it further includes a rotating sleeve and a waste stripping plate, wherein the rotating sleeve is rotatably disposed on the middle frame, and the waste stripping plate is disposed on the rotating sleeve. After the rotating sleeve rotates, it is used to drive the waste stripping plate to scrape off the flash on the workpiece.

[0011] Optionally, the end of the waste stripping plate has a contoured groove, and the shape of the contoured groove matches the shape of the edge of the workpiece.

[0012] Optionally, it also includes a sliding column, which is slidably arranged in the rotating sleeve, and the sliding cross bar is arranged at the end of the sliding column.

[0013] Optionally, the inner wall of the rotating sleeve has a slide groove, the slide groove is spiral-shaped, the sliding column has a slider, and the slider is located in the slide groove.

[0014] Optionally, the sliding column is a two-section split structure, and the two sections are rotatably connected.

[0015] Optionally, a top plate is further included, which is arranged on the frame in a lifting and sliding manner. After the top plate slides, it is used to lift or cancel the lifting of the middle frame.

[0016] Optionally, the upper mold is provided with an upper guide column and an upper guide hole, and the lower mold is provided with a lower guide column and a lower guide hole, the upper guide column is used to cooperate with the lower guide hole, and the lower guide column is used to cooperate with the upper guide hole.

[0017] Optionally, an insulator thermoplastic molding process uses the insulator thermoplastic molding device to process the insulator.

[0018] The working principle and beneficial effects of the present invention are:

[0019] The upper mold is set on the frame by the hydraulic lifting mechanism, and the lower mold is set on the frame by the guide rail to slide longitudinally, so that the mold opening and closing operations can be conveniently performed. The middle frame can be lifted and lowered relative to the lower mold. When the injection molding starts, the middle frame is located between the upper mold and the lower mold, and the three molds are closed. At this time, a molding cavity is formed between the upper mold, the middle frame and the lower mold.

[0020] The core column and multiple adjustment sleeves are slidably arranged on the middle frame, and the diameters of these adjustment sleeves are gradually increased. According to the diameter size of the insulator resistance rod, the corresponding number of adjustment sleeves can be slid into the molding cavity so that they together form a suitable core mold size. During the processing, the end face of the unused adjustment sleeve will remain flush with the inner wall of the middle frame, thereby ensuring the smoothness of the inner wall of the molding cavity and the molding quality of the insulator. The upper mold is provided with an injection hole, which can connect the injection molding equipment and the molding cavity. The raw material is injected into the molding cavity through the injection molding equipment and the injection hole. After cooling and solidification, the insulator workpiece is obtained. When unloading, first lift the upper mold, then move the lower mold out longitudinally, and then lift the middle frame, the workpiece on the core column will be synchronously lifted, and finally the workpiece can be pulled off the core column.

[0021] By using a core column and multiple adjustable sleeve structures to replace the traditional single core mold, the frequent replacement of the entire mold due to changes in the diameter of the resistor rod is avoided. It avoids investing money to design, manufacture and purchase new molds, effectively reducing mold-related costs, reducing equipment downtime, and increasing the effective operation time of the equipment, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0023] Figure 1 It is a structural schematic diagram of an insulator thermoplastic molding device;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 It is a structural schematic diagram of the lower mold in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the upper mold in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the middle frame of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the rotating sleeve in the present invention.

[0029] In the figure: 1, frame, 2, upper mold, 3, lower mold, 4, middle frame, 5, core column, 6, adjusting sleeve, 7, molding cavity, 8, sliding cross bar, 9, positioning hole, 10, rotating sleeve, 11, waste removal plate, 12, profiling groove, 13, sliding column, 14, slide groove, 15, slider, 16, top plate, 17, upper guide column, 18, upper guide hole, 19, lower guide column, 20, lower guide hole. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0031] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0032] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] Reference Figure 1 to Figure 6 , which is the first embodiment of the present invention, provides an insulator thermoplastic molding device, comprising a frame 1, an upper mold 2, a lower mold 3, an intermediate frame 4, a core column 5 and an adjusting sleeve 6, wherein the upper mold 2 and the lower mold 3 are both slidably arranged on the frame 1, the intermediate frame 4 is lifted and slidably arranged relative to the lower mold 3, the intermediate frame 4 is located between the upper mold 2 and the lower mold 3, and a molding cavity 7 is formed between the upper mold 2, the intermediate frame 4 and the lower mold 3;

[0035] The core column 5 and the adjusting sleeve 6 are both slidably disposed on the intermediate frame 4. There are multiple adjusting sleeves 6 with gradually increasing diameters, which are slidably sleeved on the core column 5 in sequence. The core column 5 and the adjusting sleeve 6 slide into or out of the forming cavity 7.

[0036] In this embodiment, the upper mold 2 is slidably mounted on the frame 1 by a hydraulic lifting mechanism, and the lower mold 3 is longitudinally slidably mounted on the frame 1 by a guide rail, so that the mold opening and closing operations can be conveniently performed. The middle frame 4 can be lifted and lowered relative to the lower mold 3. When the injection molding starts, the middle frame 4 is located between the upper mold 2 and the lower mold 3, and the three molds are closed, and a molding cavity 7 is formed between the upper mold 2, the middle frame 4 and the lower mold 3.

[0037] The core column 5 and a plurality of adjusting sleeves 6 are slidably arranged on the intermediate frame 4, and the diameters of these adjusting sleeves 6 are gradually increased. According to the diameter size of the insulator resistance rod, the corresponding number of adjusting sleeves 6 can be slid into the molding cavity 7 so that they together form a suitable core mold size. During the processing, the end face of the unused adjusting sleeve 6 will remain flush with the inner wall of the intermediate frame 4, thereby ensuring the smoothness of the inner wall of the molding cavity 7 and the molding quality of the insulator. The upper mold 2 is provided with an injection hole, which can connect the injection molding equipment and the molding cavity 7. The raw material is injected into the molding cavity 7 through the injection molding equipment and the injection hole. After cooling and solidification, the insulator workpiece is obtained. When unloading, first lift the upper mold 2, then move the lower mold 3 out longitudinally, and then lift the intermediate frame 4, the workpiece worn on the core column 5 will be synchronously lifted, and finally the workpiece can be pulled off the core column 5.

[0038] By adopting the core column 5 and multiple adjustable sleeve structures to replace the traditional single core mold, the frequent replacement of the entire mold due to changes in the diameter of the resistor rod is avoided. It avoids the need to invest money in designing, manufacturing and purchasing new molds, effectively reduces mold-related costs, reduces equipment downtime, and increases the effective operating time of the equipment, thereby improving production efficiency.

[0039] Furthermore, it also includes a sliding cross bar 8, which is slidably arranged relative to the middle frame 4. The sliding cross bar 8 has a positioning hole 9, and the positioning hole 9 is used to accommodate the end of the core column 5. After the sliding cross bar 8 slides, the end of the core column 5 enters or leaves the positioning hole 9.

[0040] In this embodiment, when preparing for injection molding, the sliding cross bar 8 is combined with the middle frame 4, thereby forming a closed square space together with the middle frame 4 to ensure the integrity of the molding cavity 7. At this time, the end of the core column 5 is just inserted into the positioning hole 9 on the sliding cross bar 8. In this state, after the adjustment sleeve 6 is adjusted in place according to the resistance rod diameter requirement, the position of the core column 5 and the adjustment sleeve 6 in the molding cavity 7 is well fixed, and then the injection molding operation is performed. When the injection molding is completed and demolding is required, the sliding cross bar 8 is slid outward, and the end of the core column 5 will be separated from the positioning hole 9, and the sliding cross bar 8 will no longer block the core column 5. In this way, the workpiece with the resistance rod can be directly pulled off the core column 5 very conveniently.

[0041] During the injection molding process, the closed square space formed by the sliding cross bar 8 and the fixing effect of the positioning hole 9 on the core column 5 can effectively ensure that the core column 5 and the adjustment sleeve 6 will not shake or move during molding, ensuring the position accuracy of the resistor rod in the insulator, thereby improving the molding stability during the entire injection molding process. In the demoulding stage, the core column 5 is separated from the positioning hole 9 by simply sliding the cross bar 8, eliminating the obstruction to the workpiece, so that the workpiece can be directly pulled out, which is simple to operate and improves the efficiency of demoulding.

[0042] Furthermore, it also includes a rotating sleeve 10 and a waste stripping plate 11. The rotating sleeve 10 is rotatably arranged on the middle frame 4, and the waste stripping plate 11 is arranged on the rotating sleeve 10. After the rotating sleeve 10 rotates, it is used to drive the waste stripping plate 11 to scrape off the burrs on the workpiece.

[0043] In this embodiment, during the production process of the insulator, when the injection molding is completed and the demoulding operation is required, the middle frame 4 rises. At this time, the rotating sleeve 10 starts to rotate. Since the waste stripping plate 11 is arranged on the rotating sleeve 10, the rotation of the rotating sleeve 10 will drive the waste stripping plate 11 to swing. When the waste stripping plate 11 swings to the edge of the workpiece, it can scrape off the flash waste generated by the gap between the upper mold 2 and the lower mold 3 on the workpiece. After scraping off the flash, the workpiece can be directly pulled off the core column 5. During the injection molding process, the middle frame 4 is located between the upper mold 2 and the lower mold 3. At this time, the waste stripping plate 11 is attached to the outer side of the upper mold 2, so it will not affect the sealing of the molding cavity 7, nor will it cause any adverse effects on the injection molding. Of course, a vertical accommodating groove corresponding to the waste stripping plate 11 can also be opened in the upper mold 2 to accommodate the vertical waste stripping plate 11 when the mold is closed, so as to improve the sealing of the molding cavity 7, which can be adjusted according to actual needs.

[0044] In the conventional technology, after demoulding, it is necessary to manually clean the flash, which is time-consuming and laborious. However, in the present solution, the design of driving the waste stripping plate 11 to scrape the flash by rotating the sleeve 10 eliminates the process of manually cleaning the flash, shortens the time of the entire production process, and improves the production efficiency. During the molding process, the waste stripping plate 11 is attached to the outer side of the upper mold 2, and a vertical receiving groove corresponding to the waste stripping plate 11 can also be provided in the upper mold 2 to accommodate the vertical waste stripping plate 11 when the mold is closed, which will neither affect the sealing of the molding cavity 7 nor cause adverse effects on the molding, thereby ensuring the molding quality of the insulator.

[0045] Furthermore, the end of the waste stripping plate 11 has a profiling groove 12, and the shape of the profiling groove 12 is consistent with the shape of the edge of the workpiece.

[0046] In this embodiment, the end of the waste stripping plate 11 is provided with a profiling groove 12 that matches the shape of the edge of the workpiece. When the waste stripping plate 11 swings to the edge of the workpiece, the profiling groove 12 is closely attached to the edge of the workpiece. With the movement of the waste stripping plate 11, the profiling groove 12 can scrape off the flash waste along the edge of the workpiece. Since the shape of the profiling groove 12 perfectly matches the shape of the edge of the workpiece, it can penetrate into the corner of the edge of the workpiece.

[0047] Because the shape of the profiling groove 12 matches the shape of the workpiece edge, in the process of scraping off the flash, it can fit the edge of the workpiece more closely and penetrate into some subtle places, so that the flash can be scraped more cleanly and thoroughly, effectively improving the cleaning effect of the flash waste and further improving the appearance quality of the product.

[0048] Furthermore, it also includes a sliding column 13 , which is slidably disposed in the rotating sleeve 10 , and the sliding cross bar 8 is disposed at the end of the sliding column 13 .

[0049] In this embodiment, the sliding column 13 slides in the rotating sleeve 10, providing a guide track for the movement of the sliding crossbar 8, so that the sliding crossbar 8 can slide more smoothly and accurately. This guiding effect ensures that the operations related to the sliding crossbar 8 (such as the separation and combination of the core column 5 and the positioning hole 9) can be carried out stably during the entire production process, reducing problems such as component damage or position deviation caused by unstable operation, and improving the reliability of the production equipment and the accuracy of operation.

[0050] Furthermore, the inner wall of the rotating sleeve 10 has a slide groove 14 , and the slide groove 14 is spiral-shaped. The sliding column 13 has a slider 15 , and the slider 15 is located in the slide groove 14 .

[0051] In this embodiment, the slider 15 on the sliding post 13 is located in the spiral groove 14 on the inner wall of the rotating sleeve 10. When performing the demoulding operation, the sliding post 13 needs to be pulled out of the rotating sleeve 10, and as the sliding post 13 slides, the slider 15 slides in the spiral groove 14. Since the groove 14 is a spiral design, the sliding of the slider 15 therein will generate a lateral force, which will drive the rotating sleeve 10 to rotate. The rotation of the rotating sleeve 10 will then drive the waste removal plate 11 disposed thereon to swing, and scrape off the flash on the edge of the workpiece. At the same time, the sliding crossbar 8 is also driven by the sliding post 13 to make corresponding position adjustments. In order to improve the stability of the drive, multiple groups of sliders 15 and grooves 14 can be set on the rotating sleeve 10 and the sliding post 13.

[0052] Through the design of the spiral chute 14 and the slider 15, the action of pulling out the sliding crossbar 8 and the swinging action of the waste removal plate 11 are linked. When performing the demoulding operation, only the sliding operation of the sliding column 13 is required to complete the waste removal action at the same time, which simplifies the operation process and improves the convenience and efficiency of the operation. The setting of multiple sets of sliders 15 and chute 14 makes the rotation of the rotating sleeve 10 and the swinging of the waste removal plate 11 more stable and reliable during the driving process.

[0053] Furthermore, the sliding column 13 is a two-section split structure, and the two sections are rotatably connected.

[0054] In this embodiment, since the sliding column 13 is a two-section split structure and the two sections are rotatably connected, when the sliding column 13 is pulled out to a certain extent, the two sections of the sliding column 13 can be folded downward around the rotation connection point, thereby reducing the space occupied by the equipment in the longitudinal direction. At the same time, it also makes sufficient operating space for pulling out the workpiece from the core column 5, avoiding the sliding cross bar 8 from hindering the workpiece pulling action.

[0055] The design of the sliding column 13 with two separate sections and rotatably connected can be folded after a specific operation is completed, which effectively reduces the space occupied by the equipment in the longitudinal direction and makes the layout of the entire production equipment more compact. Especially for a production environment with limited space, this design can improve the utilization rate of space. In the operation of pulling out the workpiece, the folded sliding cross bar 8 makes room for pulling out the workpiece, allowing the operator to operate more conveniently and freely, reducing the problems of collision and inconvenience in operation caused by insufficient space during the operation, and improving the convenience and efficiency of the operation.

[0056] Furthermore, it also includes a top plate 16, which is arranged on the frame 1 in a lifting and sliding manner. After the top plate 16 slides, it is used to lift or cancel the lifting of the middle frame 4.

[0057] In this embodiment, during the demoulding stage of insulator production, the lower mold 3 is first moved out from below the upper mold 2, and at this time, the top plate 16 is just below the middle frame 4. A screw is rotatably provided on the frame 1, and the top plate 16 is threadedly connected to the screw, and can be lifted and slid on the frame 1 by rotating the screw. Both ends of the middle frame 4 have parts in contact with the top plate 16. As the top plate 16 rises, the parts in contact with the middle frame 4 are subjected to an upward force, so that the middle frame 4 gradually rises. After the middle frame 4 rises, it provides convenient conditions for subsequent demoulding operations such as scraping off the flash of the waste stripping plate 11 and pulling the workpiece out of the core column 5.

[0058] Furthermore, the upper mold 2 is provided with an upper guide column 17 and an upper guide hole 18, and the lower mold 3 is provided with a lower guide column 19 and a lower guide hole 20, wherein the upper guide column 17 is used to cooperate with the lower guide hole 20, and the lower guide column 19 is used to cooperate with the upper guide hole 18.

[0059] In this embodiment, during the thermoplastic molding process of the insulator, when the upper mold 2 and the lower mold 3 need to be molded together, the upper guide post 17 on the upper mold 2 will be accurately inserted into the lower guide hole 20 of the lower mold 3, and at the same time, the lower guide post 19 of the lower mold 3 will also be inserted into the upper guide hole 18 of the upper mold 2. Through this precise matching, the upper mold 2 and the lower mold 3 can be accurately positioned, ensuring that the relative position between the upper mold 2 and the lower mold 3 remains accurate and unchanged during the injection molding process, effectively avoiding the problems of mold offset and misalignment during the mold closing process, thereby improving the positioning accuracy of the mold and ensuring the dimensional accuracy and quality stability of the insulator molding.

[0060] Furthermore, an insulator thermoplastic molding process uses the insulator thermoplastic molding device to process the insulator.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An insulator thermoplastic molding device, characterized in that: The mold (2) comprises a frame (1), an upper mold (2), a lower mold (3), an intermediate frame (4), a core column (5) and an adjusting sleeve (6); the upper mold (2) and the lower mold (3) are both slidably arranged on the frame (1); the intermediate frame (4) is arranged to be lifted and slid relative to the lower mold (3); the intermediate frame (4) is located between the upper mold (2) and the lower mold (3); and a molding cavity (7) is formed between the upper mold (2), the intermediate frame (4) and the lower mold (3); The core column (5) and the adjusting sleeve (6) are both slidably mounted on the intermediate frame (4); the adjusting sleeves (6) are multiple and have diameters that increase in stages, and are sequentially slidably mounted on the core column (5); the core column (5) and the adjusting sleeve (6) slide into or out of the molding cavity (7); It also comprises a sliding cross bar (8), the sliding cross bar (8) being slidably arranged relative to the middle frame (4), the sliding cross bar (8) having a positioning hole (9), the positioning hole (9) being used to accommodate the end of the stem (5), and after the sliding cross bar (8) slides, the end of the stem (5) enters or leaves the positioning hole (9); It also comprises a rotating sleeve (10) and a waste stripping plate (11), wherein the rotating sleeve (10) is rotatably disposed on the intermediate frame (4), and the waste stripping plate (11) is disposed on the rotating sleeve (10), and after the rotating sleeve (10) rotates, it is used to drive the waste stripping plate (11) to scrape off the flash on the workpiece; It also comprises a sliding column (13), wherein the sliding column (13) is slidably disposed in the rotating sleeve (10), and the sliding cross bar (8) is disposed at the end of the sliding column (13); The inner wall of the rotating sleeve (10) is provided with a slide groove (14), the slide groove (14) is spiral-shaped, the slide column (13) is provided with a slider (15), and the slider (15) is located in the slide groove (14); The sliding column (13) is a two-section split structure, and the two sections are rotatably connected.

2. The insulator thermoplastic molding device according to claim 1, characterized in that: The end of the waste stripping plate (11) is provided with a profiling groove (12), and the shape of the profiling groove (12) matches the shape of the edge of the workpiece.

3. The insulator thermoplastic molding device according to claim 1, characterized in that: It also comprises a top plate (16), wherein the top plate (16) is arranged on the frame (1) in a lifting and sliding manner, and after the top plate (16) slides, it is used to lift or cancel the lifting of the middle frame (4).

4. The insulator thermoplastic molding device according to claim 1, characterized in that: The upper mold (2) is provided with an upper guide column (17) and an upper guide hole (18), and the lower mold (3) is provided with a lower guide column (19) and a lower guide hole (20). The upper guide column (17) is used to cooperate with the lower guide hole (20), and the lower guide column (19) is used to cooperate with the upper guide hole (18).

5. A thermoplastic forming process for an insulator, characterized in that: An insulator thermoplastic molding device as claimed in any one of claims 1 to 4 is used to process insulators.

Images