Composite insulator injection positioning device

Abstract

The utility model provides a composite insulator injection positioning device. The device comprises a fixed plate, a movable plate and a supporting piece, the fixed plate and the movable plate are sequentially arranged on the supporting piece in a spaced and parallel sleeving mode. A fixing groove used for fixing a composite insulator end fitting is formed in the center of the side, close to the movable plate, of the fixed plate. The top of the movable plate is provided with a placement groove used for placing a core rod of the composite insulator, and the straight line where the placement groove and the fixed groove are located is perpendicular to the fixed plate. According to the technical scheme, the problem that an end hardware fitting cannot be fixed in the first section injection molding process of a composite insulator product is solved, and the product quality after injection molding is improved.

Description

Technical Field

[0001] This application relates to the field of composite insulator product production, and particularly to a composite insulator injection positioning device. Background Art

[0002] Composite insulators have been widely used in the power system due to their advantages such as small size, light weight, and high pollution flashover voltage resistance. In the production process of composite insulators, the injection molding process is one of the key steps. The injection molding machine heats the silicone rubber material to a molten state and injects it into the closed mold cavity. After a certain temperature and pressure vulcanization, the product is finally formed.

[0003] In the existing injection molding process of composite insulators, ejector rods are usually designed in the mold to fix the core rod and prevent the core rod from shifting due to the impact of the rubber compound during the injection process.

[0004] However, during the first-stage injection process of the above-mentioned injection molding of composite insulators, the fixation of the core rod cannot be guaranteed, which reduces the quality of the composite insulators. Summary of the Utility Model

[0005] This application provides a composite insulator injection positioning device to solve the technical problem that the fixation of the core rod cannot be guaranteed during the first-stage injection process of composite insulator injection molding.

[0006] This application provides a composite insulator injection positioning device, including:

[0007] A fixed plate, a movable plate, and a support member;

[0008] The fixed plate and the movable plate are sequentially and parallelly sleeved on the support member at intervals;

[0009] On one side of the fixed plate close to the movable plate, a fixing groove is provided for fixing the end fitting of the composite insulator;

[0010] The movable plate is provided with a placement groove for placing the core rod of the composite insulator, and the straight line where the placement groove and the fixing groove are located is perpendicular to the fixed plate.

[0011] Optionally, the placement groove is a U-shaped groove.

[0012] Optionally, the fixing groove is a concave groove.

[0013] Optionally, a first fastener is sleeved on the support member, and the first fastener is arranged at one end of the support member close to the fixed plate and away from the movable plate.

[0014] Optionally, a second fastener is sleeved on the support member, and the second fastener is arranged at one end of the support member close to the movable plate and away from the fixed plate.

[0015] Optionally, a spring is further disposed between the fixed plate and the movable plate, and the spring is sleeved on the support member.

[0016] Optionally, a depth adjusting member is disposed inside the fixing groove.

[0017] Optionally, anti-slip threads are disposed on the surfaces of the first fastener and the second fastener.

[0018] Optionally, the support member includes a first threaded rod and a second threaded rod.

[0019] Optionally, both the first fastener and the second fastener are bolts.

[0020] The composite insulator injection positioning device provided by the present application includes a fixed plate, a movable plate and a support member; the fixed plate and the movable plate are sequentially and parallelly sleeved on the support member at intervals; a fixing groove for fixing the end fitting of the composite insulator is opened at the center of one side of the fixed plate close to the movable plate; a placement groove for placing the core rod of the composite insulator is opened at the top of the movable plate, and the straight line where the placement groove and the fixing groove are located is perpendicular to the fixed plate. In this technical solution, when the composite insulator product is injection-molded at the first stage, a positioning tooling is added outside the mold, including a movable plate for fixing the core rod and a fixed plate for fixing the end fitting. Among them, a placement groove for placing the core rod is opened on the movable plate to prevent the core rod from being eccentric during the injection of glue, and a fixing groove for placing the end fitting is provided on the fixed plate to prevent the end fitting from moving, thereby improving the accuracy of the composite insulator during the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0022] Figure 1 is a schematic structural diagram of the composite insulator injection positioning device provided by the present application;

[0023] Figure 2 is another schematic structural diagram of the composite insulator injection positioning device provided by the present application.

[0024] Reference Signs:

[0025] 100 - Composite insulator injection positioning device; 101 - Fixed plate; 102 - Movable plate; 103 - Fixing groove; 104 - Placement groove; 105 - First fastener; 106 - Second fastener; 107 - Spring; 108 - First threaded rod; 109 - Second threaded rod.

[0026] Through the above-mentioned accompanying drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be provided hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Specific Embodiment

[0027] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0028] In the prior art, in the injection molding die of a composite insulator, there is a ejector rod to fix the core rod to prevent eccentricity caused by the impact of the rubber compound. The end fitting stop collar rubber head part is suspended on the die. During the first-stage injection, there is no tooling to position and fix the insulator semi-finished product placed on the machine table. The injected rubber compound will carry the core rod and rush out and move, resulting in quality problems caused by the end fitting stop collar not being in the middle position of the rubber head.

[0029] In view of the problems in the prior art, the inventors recognized that if the quality of the composite insulator after injection molding is to be ensured, it is necessary to ensure that both the core rod and the end fitting can be fixed in place, thereby avoiding the problem of the core rod shifting during the injection process. Based on this, on the basis of in-depth analysis and research of the above problems, the inventors came up with the idea of designing a device for uniformly fixing the core rod and the end fitting during the injection molding process of a composite insulator, which can ensure that both the core rod and the end fitting can be fixed and unchanged during the injection process, and thus ensure the quality of the composite insulator after injection.

[0030] The following uses specific embodiments to detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0031] Figure 1 It is a schematic structural diagram of the composite insulator injection positioning device provided by the embodiment of the present application. As Figure 1 shown, the composite insulator injection positioning device 100 includes:

[0032] A fixed plate 101, a movable plate 102 and a support member;

[0033] The fixed plate 101 and the movable plate 102 are sequentially and spaced parallelly sleeved on the support member;

[0034] On one side of the fixed plate 101 close to the movable plate 102, a fixing groove 103 for fixing the end fitting of the composite insulator is provided.

[0035] The movable plate 102 is provided with a placement groove 104 for placing the core rod of the composite insulator. The straight line where the placement groove 104 and the fixing groove 103 are located is perpendicular to the fixed plate 101.

[0036] Among them, the injection positioning device 100 for composite insulators is mainly used to solve the problem of core rod deviation caused by the impact of the rubber compound during the injection molding process. Specifically, first, the core rod of the composite insulator is placed in the placement groove 104 of the movable plate 102, and the end fitting is inserted into the fixing groove 103 of the fixed plate 101. Since the positions of the fixing groove 103 and the placement groove 104 are perpendicular to each other, the stability of the core rod and the end fitting in space can be ensured. Such a structural design can effectively avoid product quality problems caused by the movement of the core rod or the fitting during the injection process, especially prevent the situation where the fitting stop is not in the middle position of the rubber coating head.

[0037] Optionally, the placement groove 104 is a U-shaped groove.

[0038] Among them, in practical applications, the placement groove 104 is designed as a U-shaped groove. This design can better match the shape of the core rod, thus providing more stable support. This U-shaped groove structure ensures that the core rod can be evenly supported during the injection molding process, further avoiding the position movement of the core rod during the injection process. In addition, the arc structure of the U-shaped groove can effectively disperse the impact force of the rubber compound during the injection process, preventing the core rod from shifting due to uneven force.

[0039] Optionally, the fixing groove 103 is a concave groove.

[0040] Among them, the fixing groove 103 is designed as a concave groove. The purpose is to better fix the end fitting and ensure that it will not move during the injection process. The concave groove can accurately wrap the outer shape of the end fitting, providing a strong fixing effect. In addition, such a design ensures that during the injection process, even if affected by the impact of the rubber compound, the end fitting can remain stable and immovable, ensuring that the fitting stop is located in the middle of the rubber coating head and improving the final quality of the product.

[0041] Optionally, a first fastener 105 is sleeved on the support member. The first fastener 105 is arranged at one end of the support member close to the fixed plate 101 and away from the movable plate 102.

[0042] Among them, to further improve the stability of the positioning device, a first fastener 105 is designed on the support member. The first fastener 105 is located at one end of the support member close to the fixed plate 101 and far from the movable plate 102. Specifically, by tightening the first fastener 105, the stability of the fixed plate 101 is increased, ensuring that the fixed plate 101 does not shake or shift during the entire injection process, thereby further ensuring the fixing effect of the end fitting and avoiding the quality problem that the fitting spigot is not in the middle position of the rubber-coated head.

[0043] Optionally, a second fastener 106 is sleeved on the support member. The second fastener 106 is arranged at one end of the support member close to the movable plate 102 and far from the fixed plate 101.

[0044] Among them, similar to the first fastener 105, the second fastener 106 is designed at one end of the support member close to the movable plate 102. Specifically, by tightening the second fastener 106, the stability of the movable plate 102 is ensured, preventing the movable plate 102 from shifting when impacted by the rubber compound during the injection process, thereby ensuring the stability of the mandrel. By adjusting the second fastener 106, the fixing degree of the movable plate 102 can be adjusted according to actual needs, further improving the accuracy and product quality of the entire injection molding process.

[0045] Optionally, a spring 107 is further arranged between the fixed plate 101 and the movable plate 102. The spring 107 is sleeved on the support member.

[0046] Among them, in order to improve the buffering capacity of the positioning device, a spring 107 structure is designed between the fixed plate 101 and the movable plate 102. Specifically, the spring 107 is sleeved on the support member. When the impact force of the rubber compound during the injection process is transmitted to the fixed plate 101 or the movable plate 102, the spring 107 can provide a certain elastic buffer, reducing the stress concentration between the device components. With this device structure, not only the device itself is protected, but also the movement of the mandrel or fitting caused by severe vibration can be avoided, thereby further ensuring the stability of the injection molding process and the product quality.

[0047] Optionally, a depth adjuster is arranged inside the fixed groove 103.

[0048] Among them, in order to adapt to composite insulators of different specifications, a depth adjuster is designed inside the fixed groove 103. Specifically, the depth adjuster can be adjusted mechanically or hydraulically to adapt to end fittings of different lengths and diameters, thereby improving the versatility and flexibility of the positioning device, ensuring that the fixed plate 101 can still firmly fix the end fitting even in products of different specifications, and thus avoiding quality problems caused by the instability of the end fitting during the injection process.

[0049] For example, when the depth adjustment piece is adjusted mechanically, it is usually achieved by rotating an adjusting bolt or a gear set. Specifically, a threaded hole or a rack is provided in the fixing groove 103. By rotating the adjusting bolt, the depth adjustment piece can move up and down along the vertical direction of the fixing groove to adjust the effective depth of the groove. Therefore, the depth can be accurately adjusted according to the length and diameter of the hardware to ensure that the hardware is firmly locked in the fixing groove.

[0050] In addition, when the depth adjustment member is adjusted hydraulically, a hydraulic cylinder is usually connected inside the fixed groove 103, and then the hydraulic cylinder piston is pushed up and down by controlling the hydraulic pressure to adjust the depth of the fixed groove 103. The hydraulic adjustment method can provide smoother and more precise adjustment, which is especially suitable for production scenarios that require frequent replacement of hardware of different specifications.

[0051] Optionally, surfaces of the first fastener 105 and the second fastener 106 are both provided with anti-slip threads.

[0052] Among them, in order to prevent the fasteners from slipping during the adjustment process, the surfaces of the first fastener 105 and the second fastener 106 are designed with anti-slip threads; specifically, this anti-slip design ensures that the fasteners can be firmly locked during operation, preventing the fixed plate 101 or the movable plate 102 from moving due to loosening of the fasteners during the injection process. Therefore, the anti-slip threads improve the operational safety and reliability of the device, thereby ensuring the production quality of the composite insulator.

[0053] Optionally, the support member includes a first threaded rod 108 and a second threaded rod 109 .

[0054] The support is mainly designed to connect and fix the fixed plate 101 and the movable plate 102, and may include a first threaded rod 108 and a second threaded rod 109. Specifically, the design of the support allows the distance between the fixed plate 101 and the movable plate 102 to be adjusted when necessary to accommodate composite insulators of different specifications. For example, when producing composite insulators of larger sizes, the threaded rod can be rotated to increase the distance between the fixed plate 101 and the movable plate 102 to accommodate larger hardware and core rods. When processing composite insulators of smaller sizes, the distance between the plates can be shortened to ensure the distance between the fixed plate 101 and the movable plate 102. Ensure the fixing effect; secondly, the use of threaded rods makes the adjustment process more precise and can firmly lock the adjusted plate position. After completing the adjustment of the distance between the plates, the threaded rods can firmly lock the adjusted plate position through nuts or locking devices, ensuring that during the injection molding process, no matter how much impact or vibration is received, the relative position between the fixed plate 101 and the movable plate 102 will not change. The firmly locked threaded rods not only prevent the displacement of the plates in the vertical direction, but also effectively suppress the shaking of the plates in other directions, thereby further improving the stability of the device during the injection process.

[0055] Optionally, both the first fastener 105 and the second fastener 106 are bolts.

[0056] Among them, the first fastener 105 and the second fastener 106 adopt a bolt design, which can provide a reliable fixing effect; specifically, by tightening the bolts to fix the positions of the fixed plate 101 and the movable plate 102, ensuring that they will not move during the injection molding process; in addition, the bolt design is simple and efficient, easy to operate and maintain, and can withstand large mechanical stresses, which is the key component to ensure the stability of the device and the production quality of composite insulators.

[0057] The composite insulator injection positioning device 100 provided in this embodiment, through the ingenious combination design of the fixed plate 101, the movable plate 102 and the support member, provides an effective solution to prevent the offset problem of the core rod and the end fitting caused by the impact of the rubber material during the injection process; the fixing groove 103 on the fixed plate 101 and the placement groove 104 on the movable plate 102 are respectively used to firmly fix the end fitting and the core rod, and ensure that the fitting stop is always in the middle position of the rubber covering head through precise positioning; the innovative design of this device, including the U-shaped placement groove 104, the concave fixing groove 103, the fastener and the spring 107 buffer structure, etc., significantly improves the stability and quality consistency of the insulator during the injection molding process, and solves the quality problems caused by the movement of the core rod and the end fitting in the prior art.

[0058] Figure 2 Another structural schematic diagram of the composite insulator injection positioning device provided in the embodiment of the present application. As Figure 2 shown, the composite insulator injection positioning device 100 includes:

[0059] A first fastener 105, a second fastener 106, a support member, a movable plate 102 and a fixed plate 101; among them, the movable plate 102 and the fixed plate 101 are fixedly arranged on the support member in parallel, the fixed plate 101 is located at the front end of the composite insulator injection positioning device 100, and the movable plate 102 is located at the rear end of the composite insulator injection positioning device 100.

[0060] Among them, a fixing groove 103 is designed at the center of the fixed plate 101, and this fixing groove 103 is used to accommodate and fix the fitting, preventing it from moving outward due to the impact force of the rubber material during the injection molding process; the depth and shape of the fixing groove 103 are adapted to the fitting head, so as to provide a firm fixing effect.

[0061] The center of the movable plate 102 is cut into a semi-elliptical shape, and its size matches the outer diameter of the fitting; when the fitting is placed in the semi-elliptical cut of the movable plate 102, the movable plate 102 can effectively prevent the fitting from shifting left and right, ensuring the stable position of the core rod during the injection molding process.

[0062] Specifically, by tightening the second fastening bolt, ensure that the entire tooling is firmly connected to the workbench surface and maintained in a horizontal state. During injection molding, first place the semi-finished product after crimping into the semi-elliptical incision of the movable plate 102, then move the fitting so that its stop portion aligns with the encapsulation head portion in the mold, and then by adjusting the position of the fixed plate 101, make the fixed slot 103 closely adhere to the head of the fitting to provide additional fixing force; finally, by tightening the first fastening bolt, further fix the position of the fitting to ensure that the end fitting does not move at all during the injection process.

[0063] For example, the overall working process of the positioning tooling may include placing the semi-finished product of the composite insulator after crimping (including the end fitting and the core rod) in the composite insulator injection positioning device 100, aligning the head of the end fitting with the semi-elliptical fixed slot 103 of the movable plate 102, and gently inserting the end fitting into the fixed slot 103. Among them, the semi-elliptical design of the movable plate 102 can adapt to the outer diameter size of the fitting to initially fix the position of the fitting and prevent it from moving left and right; then, move the end fitting so that its stop portion aligns with the encapsulation head portion in the mold to ensure that the head of the end fitting is in the center position of the encapsulation head, which determines the precise alignment of the fitting and the core rod during the injection molding process and thus affects the quality of the final product.

[0064] Then adjust the fixed plate 101. By adjusting the height of the fixed plate 101 through the first threaded rod 108 and the second threaded rod 109, make the fixed plate 101 gradually press down until the fixed slot 103 in the center of the fixed plate 101 tightly adheres to the top of the end fitting. Among them, the fixed slot 103 in the center of the fixed plate 101 is designed to stabilize the head of the fitting and prevent it from moving outward under the impact force during the injection molding process; after the fixed slot 103 in the center of the fixed plate 101 is in close contact with the head of the end fitting, tighten the first fastener 105 to ensure that the fixed plate 101 has no displacement in the vertical direction to ensure that the end fitting is always in a stable state during the injection molding process.

[0065] Finally, adjust the movable plate 102. After fixing the fixed plate 101, ensure that the movable plate 102 is still in a horizontal state and the semi-elliptical fixed slot 103 of the movable plate 102 closely fits the outer diameter of the fitting. Among them, the position of the movable plate 102 can be slightly adjusted to ensure that the fixed slot 103 can completely fix the fitting and prevent it from shifting left and right; then, after confirming that the end fitting has been completely fixed on the movable plate 102, further tighten the second fastener 106 on the movable plate 102 to ensure that the movable plate 102 does not change its position during the entire injection process.

[0066] Based on the previous device embodiment, the positioning tooling provided in this embodiment removes the spring 107 on the support member, and is mainly applicable to process scenarios with relatively low requirements for fixing force. For example, in the molding process of composite insulators with smaller specifications or lighter weights, through the collaborative action of only the top plate and the movable plate 102, an effective and simple solution for the injection positioning of composite insulators can be provided, ensuring the stable positions of the fittings and the core rod during the injection molding process of composite insulators, avoiding product quality problems caused by the offset of the fittings or the core rod, and improving production efficiency and the qualified rate of products.

[0067] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0068] It should be understood that the above device embodiments are only illustrative, and the devices of this application can also be implemented in other ways. For example, the division of units / modules in the above embodiments is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0069] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0070] After considering the specification and practicing the utility model disclosed herein, those skilled in the art will easily think of other implementation schemes of this application. This application aims to cover any variations, uses or adaptive changes of this application, and these variations, uses or adaptive changes follow the general principles of this application and include common general knowledge or conventional technical means in the technical field not disclosed in this application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of this application are pointed out by the following claims.

[0071] It should be understood that this application is not limited to the precise structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is only limited by the appended claims.

Claims

1. A composite insulator injection positioning device, characterized in that: include: Fixed plates, movable plates and supports; The fixed plate and the movable plate are sequentially spaced and sleeved on the support member in parallel; A fixing groove for fixing a hardware fitting at the end of the composite insulator is provided on one side of the fixing plate close to the movable plate; The movable plate is provided with a placement groove for placing the core rod of the composite insulator, and the straight line where the placement groove and the fixing groove are located is perpendicular to the fixing plate.

2. The device according to claim 1, characterized in that The placement groove is a U-shaped groove.

3. The device according to claim 1 or 2, characterized in that: The fixing groove is a concave groove.

4. The device according to claim 1 or 2, characterized in that: The support member is sleeved with a first fastener, which is arranged on one end of the support member close to the fixed plate and away from the movable plate.

5. The device according to claim 4, characterized in that The support member is sleeved with a second fastener, which is arranged on an end of the support member close to the movable plate and away from the fixed plate.

6. The device according to claim 1 or 2, characterized in that: A spring is also arranged between the fixed plate and the movable plate, and the spring is sleeved on the supporting member.

7. The device according to claim 1 or 2, characterized in that: A depth adjusting piece is arranged inside the fixing groove.

8. The device according to claim 5, characterized in that The surfaces of the first fastener and the second fastener are both provided with anti-slip threads.

9. The device according to claim 1 or 2, characterized in that: The support member includes a first threaded rod and a second threaded rod.

10. The device according to claim 5, characterized in that The first fastening member and the second fastening member are both bolts.

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