Shielded copper busbar insulation rubber injection mold and copper busbar

Abstract

This utility model discloses a shielded copper busbar insulation rubber injection mold and a copper busbar. The shielded copper busbar insulation rubber injection mold includes a first template, a second template, a first end mold core, a second end mold core, an outer shielding layer, and a workpiece body. The first template and the second template can be separated or joined together. The first end mold core and the second end mold core are arranged opposite each other and spaced apart, and are both located between the first template and the second template. The outer shielding layer is located between the first template and the second template, and between the first end mold core and the second end mold core. The two ends of the workpiece body are detachably located at the first end mold core and the second end mold core, respectively, and pass through the outer shielding layer. At least the first end mold core, the second end mold core, the outer shielding layer, and the workpiece body form a molding cavity, which is used to form an insulation layer. The insulation layer connects the workpiece body and the outer shielding layer, forming an integral structure.

Description

Technical Field

[0001] This utility model relates to the field of cable accessories, and in particular to a shielded copper busbar insulation rubber injection mold and a copper busbar. Background Technology

[0002] Currently, other manufacturers on the market use a spray coating process for the semi-conductive outer shielding layer of their 35kV shielded copper busbars. While the mold structure is relatively simple, this process has significant quality defects, resulting in lower product quality. Furthermore, because this product cannot have any burrs or flash on the entire contact surface, the requirements for the insulation mold structure and manufacturing process of the molded outer shielding layer are extremely high, and this type of mold is not available on the market. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a shielded copper busbar insulation rubber injection mold, which can improve product quality.

[0004] A copper busbar was also proposed.

[0005] According to the first aspect of the present invention, a shielded copper busbar insulation rubber injection mold includes: The first template and the second template can be separated or combined with each other; The first end mold core and the second end mold core, which are arranged opposite to and spaced apart from each other, are both located between the first template and the second template; An outer shielding layer is disposed between the first template and the second template, and between the first end mold core and the second end mold core; The workpiece body has two ends that are detachably disposed on the first end mold core and the second end mold core, respectively, and pass through the outer shielding layer; Wherein, at least the first end mold core, the second end mold core, the outer shielding layer and the workpiece body form a molding cavity, the molding cavity is used to form an insulating layer, the insulating layer connects the workpiece body and the outer shielding layer, and forms an integral structure.

[0006] According to the first aspect of the present invention, the shielded copper busbar insulation rubber injection mold has at least the following beneficial effects: a molding cavity is formed between the first end mold core, the second end mold core, the outer shielding layer, and the workpiece body, and an insulation layer is directly formed in the molding cavity. The insulation layer connects the workpiece body and the outer shielding layer into an integral structure, thereby realizing the overall molding of the shielded copper busbar and improving the product quality of the shielded copper busbar.

[0007] According to some embodiments of the present invention, the top of the first end mold core and / or the second end mold core has an exhaust hole, which communicates between the molding cavity and the outside.

[0008] According to some embodiments of the present invention, the first end mold core has a first separation hole, the first separation hole is connected between the molding cavity and the outside along the line connecting the two ends of the workpiece body, and the end face of the workpiece body abuts against and closes the first separation hole.

[0009] According to some embodiments of the present invention, the first end mold core includes a fixing part and a forming part, the forming part is connected to the fixing part, the forming part has a second cavity, the second cavity forms part of the forming cavity, the fixing part has a mounting hole, the mounting hole communicates with the second cavity, one end of the workpiece body is mounted in the mounting hole and the mounting hole is sealed.

[0010] According to some embodiments of the present invention, it further includes a first lifting component, which is connected to the first template and / or the second template to close or separate the first template and the second template.

[0011] According to some embodiments of the present invention, a second lifting component is also included. The second lifting component is disposed below the first end mold core and / or the second end mold core, and is capable of separating the first end mold core, the second end mold core, the workpiece body, the outer shielding layer, and the insulating layer as a whole from the first template and the second template.

[0012] According to some embodiments of the present invention, the outer peripheral surface of the workpiece body has an adhesive layer.

[0013] According to some embodiments of the present invention, the outer peripheral surface of the outer shielding layer has a first snap-fit ​​portion, and the first template and / or the second template has a second snap-fit ​​portion on the inner peripheral surface of the first cavity, wherein the first snap-fit ​​portion snaps into the second snap-fit ​​portion.

[0014] According to some embodiments of the present invention, the first snap-fit ​​portion has a first flow channel, which is connected to the molding cavity.

[0015] According to some embodiments of this utility model, the number of molding cavities is multiple.

[0016] According to a second aspect embodiment of the present invention, the copper busbar includes: Workpiece body; An insulating layer is provided on the outer peripheral surface of the main body; An outer shielding layer is disposed on the outer peripheral surface of the insulating layer; The insulating layer is injection molded, and the insulating layer connects the workpiece body and the outer shielding layer, forming an integral structure.

[0017] The copper busbar according to the second aspect of the present invention has at least the following beneficial effects: the copper busbar connects the workpiece body and the outer shielding layer through the insulation layer, thereby realizing the overall forming of the copper busbar and improving the product quality of the copper busbar.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a shielded copper busbar insulation rubber injection mold according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram from a first perspective of a shielded copper busbar insulation rubber injection mold according to an embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram from a second perspective of a shielded copper busbar insulation rubber injection mold according to an embodiment of the present invention.

[0020] Icon labels: First template 100; Second flow channel 110; Second template 200; First end mold core 300; vent hole 310; first separation hole 320; fixing part 330; forming part 340; Second end mold core 400; Outer shielding layer 500; First snap-fit ​​part 510; Workpiece body 600; Insulation layer 700; First lifting component 800; Second lifting component 900. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" refers to one or more, and "multiple" refers to two or more. The use of "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figures 1 to 3 As shown, the first aspect of this utility model provides a shielded copper busbar insulation rubber injection mold, including: a first template 100, a second template 200, a first end mold core 300, a second end mold core 400, an outer shielding layer 500, and a workpiece body 600.

[0026] The first template 100 and the second template 200 are capable of separating or closing with each other. The first template 100 has a first parting surface, and the second template 200 has a second parting surface. The first and second parting surfaces are arranged opposite to each other. Separation means that the first and second parting surfaces, which were initially in contact, separate from each other, changing from an contact state to a spaced-out state. Closure means that the first and second parting surfaces, which were initially spaced out, move closer to each other, changing from a spaced-out state to an contact state. The first parting surface has a first cavity, and the second parting surface has a second cavity. When the first template 100 and the second template 200 are closed, the first and second cavities merge to form a first cavity. In some other embodiments, either the first or second parting surface may have a first cavity with an opening, and the other parting surface may be a plane that covers the opening to form a complete first cavity.

[0027] In this embodiment, the first cavity includes a first mounting cavity, a second mounting cavity, and a third mounting cavity. The third mounting cavity is located between the first mounting cavity and the second mounting cavity. The first mounting cavity, the third mounting cavity, and the second mounting cavity are arranged sequentially in the same direction.

[0028] The first end mold core 300 and the second end mold core 400 are arranged opposite to each other and spaced apart. The first end mold core 300 and the second end mold core 400 are both located between the first template 100 and the second template 200. The first end mold core 300 is located in the first mounting cavity, and the second end mold core 400 is located in the second mounting cavity. The opposite end face of the first end mold core 300 has a second cavity, and the opposite end face of the second end mold core 400 has a third cavity. The second cavity and the third cavity are opposite to each other and communicate with each other.

[0029] The outer shielding layer 500 is disposed between the first template 100 and the second template 200, and between the first end mold core 300 and the second end mold core 400. The outer shielding layer 500 is disposed in the third mounting cavity. Furthermore, the two ends of the outer shielding layer 500 are inserted into the second cavity and the third cavity by a certain distance, respectively. The outer peripheral surfaces of the two ends of the outer shielding layer 500 are basically in contact with the inner peripheral surfaces of the second cavity and the third cavity, respectively. The outer peripheral surface between the two ends of the outer shielding layer 500 is basically in contact with the inner peripheral surface of the first cavity.

[0030] The two ends of the workpiece body 600 are detachably disposed at the first end mold core 300 and the second end mold core 400, respectively, and pass through the outer shielding layer 500, that is, the workpiece body 600 passes through the second cavity, the outer shielding layer 500 and the third cavity.

[0031] A molding cavity is formed between the first end mold core 300, the second end mold core 400, the outer shielding layer 500, and the workpiece body 600. This cavity is used to mold the insulating layer 700, which connects the workpiece body 600 and the outer shielding layer 500, forming a single integrated structure. At this point, the connection point between the insulating layer 700 and the outer shielding layer 500 is located within the first end mold core 300 and the second end mold core 400. The transition between the outer shielding layer 500 and the insulating layer 700 is smooth, neat, and free of burrs, significantly improving product performance and yield. Furthermore, the outer peripheral contact surface at the transition point between the outer shielding layer 500 and the insulating layer 700 has virtually no parting line, better meeting design requirements and further enhancing product performance.

[0032] In another implementation, when one end of the outer shielding layer 500 is not inserted into the second or third cavity, or when neither end of the outer shielding layer 500 is inserted into the second or third cavity respectively, the first cavity portion will also form part of the forming cavity. That is, a forming cavity is formed between the first template 100, the second template 200, the first end mold core 300, the second end mold core 400, the outer shielding layer 500, and the workpiece body 600. The forming cavity is used to form the insulating layer 700. The insulating layer 700 connects the workpiece body 600 and the outer shielding layer 500 and forms an integral structure.

[0033] It is worth understanding that a forming cavity is formed between the first end mold core 300, the second end mold core 400, the outer shielding layer 500, and the workpiece body 600. An insulating layer 700 is directly formed in the forming cavity, and the insulating layer 700 connects the workpiece body 600 and the outer shielding layer 500 into an integral structure, thereby realizing the overall forming of the shielded copper busbar and improving the product quality of the shielded copper busbar.

[0034] Reference Figure 1 and Figure 2As shown, in some specific embodiments of this utility model, the top of the first end mold core 300 and / or the second end mold core 400 has an exhaust hole 310, which is connected between the molding cavity and the outside.

[0035] It is understandable that the molten insulation layer 700 material is injected into the molding cavity. During injection, the pressure inside the molding cavity increases, and gas is expelled through the vent 310. Furthermore, the vent 310 is located at the top of the second end mold core 400, while the molten insulation layer 700 material is generally at the bottom of the molding cavity. This allows the molten insulation layer 700 material to expel gas from the bottom of the molding cavity upwards, reducing the possibility of gas remaining in the molten insulation layer 700 material and forming bubble defects, thus improving the molding quality of the insulation layer 700.

[0036] In this embodiment, the first end mold core 300 has a vent 310, one end of which is connected to the second cavity, and the other end is connected to the gap between the outer peripheral surface of the first end mold core 300 and the first template 100. The second end mold core 400 also has a vent, one end of which is connected to the third cavity, and the other end is connected to the gap between the outer peripheral surface of the second end mold core 400 and the second template 200, allowing gas to be discharged to the outside through the gap. It should be noted that during the venting process, the vent 310 cannot immediately balance the air pressure between the molding cavity and the outside. The air pressure in the molding cavity will increase first, and after increasing to a certain level, the air pressure and the venting speed will reach a dynamic balance. Then the air pressure will begin to decrease, thus achieving venting.

[0037] It is understandable that during the initial injection process, the air pressure inside the molding cavity increases, thereby applying pressure to the inner circumferential surface of the outer shielding layer 500. This causes the outer circumferential surface of the outer shielding layer 500 to abut against the inner circumferential surfaces of the first end mold core 300 and the second end mold core 400, reducing the possibility of the molten insulation layer 700 entering the gap between the outer shielding layer 500 and the inner circumferential surfaces of the first end mold core 300 and the second end mold core 400. This allows the insulation layer 700 to be formed according to the predetermined shape, improving the molding quality of the product.

[0038] Reference Figure 2 As shown, in some specific embodiments of this utility model, the first end mold core 300 has a first separation hole 320. The first separation hole 320 is connected between the molding cavity and the outside along the line connecting the two ends of the workpiece body 600. The end face of the workpiece body 600 abuts against and closes the first separation hole 320.

[0039] In this embodiment, the end face of the workpiece body 600 abuts against the first separation hole 320. This keeps the molding cavity sealed, allowing the insulating layer 700 to be formed smoothly within the molding cavity. During the forming of the insulating layer 700, a separate separator separates the first end mold core 300 and the workpiece body 600 along the first separation hole 320. This allows the workpiece body 600 with the formed insulating layer 700 and outer shielding layer 500 to be directly separated from the first end mold core 300, facilitating the removal of the workpiece body 600 for replacement with the next workpiece body 600 without the formed insulating layer 700. The separator is a bolt with threads inside the first separation hole 320. The separator is threaded to the first end mold core 300. After the separator is screwed into the first separation hole 320, it can continue to be screwed into the first separation hole 320 after abutting against the end face of the workpiece body 600, thus achieving the separation of the workpiece body 600 from the first end mold core 300.

[0040] In addition, the second end mold core 400 also has a second separation hole. The structure of the second separation hole is the same as that of the first separation hole 320, and the function is also the same, so it will not be described again here.

[0041] Reference Figure 2 As shown, in some specific embodiments of this utility model, the first end mold core 300 includes a fixing part 330 and a forming part 340. The forming part 340 is connected to the fixing part 330. The forming part 340 has a second cavity, which forms part of the forming cavity. The fixing part 330 has a mounting hole, which communicates with the second cavity. One end of the workpiece body 600 is mounted in the mounting hole and the mounting hole is sealed.

[0042] In this embodiment, the mounting hole connects the first separation hole 320 and the second cavity. The inner circumferential surface of the mounting hole can be tightly attached to the outer circumferential surface of the workpiece body 600, thereby sealing the gap between the two and preventing the molten insulating layer 700 material from entering. This is beneficial to improving the molding quality of the insulating layer 700, thereby improving the product quality.

[0043] Reference Figure 2 As shown, in some specific embodiments of this utility model, a first lifting component 800 is also included. The first lifting component 800 is connected to the first template 100 and / or the second template 200 to close or separate the first template 100 and the second template 200.

[0044] In this embodiment, the first template 100 is located above the second template 200, and the first lifting component 800 is connected to the first template 100. It can move upward to separate the first template 100 from the second template 200, thereby realizing the separation of the first template 100 from the second template 200 and facilitating the removal of the molded product.

[0045] It should be noted that the second template 200 can be fixed or connected to the lifting platform. The second template 200 can be separated from the first template 100 by moving downward, thereby realizing the separation of the first template 100 and the second template 200.

[0046] Reference Figure 2 As shown, in some specific embodiments of this utility model, a second lifting component 900 is also included. The second lifting component 900 is disposed below the first end mold core 300 and / or the second end mold core 400, and is capable of separating the first end mold core 300, the second end mold core 400, the workpiece body 600, the outer shielding layer 500, and the insulating layer 700 as a whole from the first template 100 and the second template 200.

[0047] In this embodiment, the second lifting component 900 can separate the overall structure formed by the first end mold core 300, the second end mold core 400, the workpiece body 600, the outer shielding layer 500, and the insulating layer 700 from the first template 100 and the second template 200, and then separate the first end mold core 300 and the second end mold core 400 from the formed product to obtain a complete product.

[0048] The second lifting component 900 is fixedly connected to the production equipment outside the mold. The second lifting component 900 can be kept fixed while the second template 200 is lowered so that the first end mold core 300 and the second end mold core 400 are placed on the second lifting component 900. Alternatively, the second lifting component 900 can be raised to lift the first end mold core 300 and the second end mold core 400, thereby separating the overall structure from the second mold.

[0049] In some specific embodiments of this utility model, the outer peripheral surface of the workpiece body 600 has an adhesive layer. It is worth understanding that the adhesive layer helps to bond the insulating layer 700 to the outer peripheral surface of the workpiece body 600, so that the connection between the insulating layer 700 and the workpiece body 600 is tighter after the insulating layer 700 is formed, and the product quality is higher.

[0050] Reference Figure 3 As shown, in some specific embodiments of this utility model, the outer peripheral surface of the outer shielding layer 500 has a first snap-fit ​​portion 510, and the first template 100 and / or the second template 200 have a second snap-fit ​​portion on the inner peripheral surface of the first cavity, with the first snap-fit ​​portion 510 snapped into the second snap-fit ​​portion.

[0051] It is worth understanding that the outer shielding layer 500 is positioned with the first template 100 and the second template 200 through the first snap-fit ​​part 510, which makes the positioning accuracy of the outer shielding higher, thereby improving the quality of the molded product.

[0052] In this embodiment, the first latching portion 510 is a hook, which is conical in shape. The small end of the hook is connected to the outer peripheral surface of the outer shielding layer 500, and the large end of the hook is away from the outer peripheral surface of the outer shielding layer 500. The first parting surface of the first template 100 has a first groove similar in shape to the hook, and the second parting surface of the second template 200 has a second groove similar in shape to the hook. The first groove and the second groove form the second latching portion of the hook. Furthermore, after the shielded copper busbar is fully formed, the first latching portion 510 needs to be cut off to make the surface of the shielded copper busbar neat.

[0053] Reference Figure 3 As shown, in some specific embodiments of this utility model, the first snap-fit ​​portion 510 has a first flow channel, which is connected to the molding cavity.

[0054] In this embodiment, the first snap-fit ​​portion 510 has a first flow channel, and the parting surface of the first template 100 has a second flow channel 110. The second flow channel 110 is connected to the first groove and the first flow channel, so that the insulating layer 700 material in the external molten state can pass through the second flow channel 110 and enter the first flow channel and enter the molding cavity to realize the injection of the insulating layer 700 material. After cooling, the insulating layer 700 is formed, and the workpiece body 600 and the outer shielding layer 500 are connected as one unit.

[0055] Reference Figure 3 As shown, in some specific embodiments of this utility model, there are multiple molding cavities, which enables multiple workpieces to be injection molded at one time, resulting in higher product manufacturing efficiency.

[0056] A second aspect of this utility model provides a copper busbar, comprising a workpiece body 600, an insulating layer 700, and an outer shielding layer 500. The insulating layer 700 is disposed on the outer peripheral surface of the workpiece body; the outer shielding layer 500 is disposed on the outer peripheral surface of the insulating layer 700; wherein the insulating layer 700 is injection molded, and the insulating layer 700 connects the workpiece body 600 and the outer shielding layer 500, forming an integral structure. It is worth understanding that the copper busbar connects the workpiece body 600 and the outer shielding layer 500 through the insulating layer 700, achieving integral molding of the copper busbar, thereby improving the product quality of the copper busbar.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mold for insulating and injecting an O-ring to a shielded copper bus, characterized by, include: The first template and the second template can be separated or combined with each other; The first end mold core and the second end mold core, which are arranged opposite to and spaced apart from each other, are both located between the first template and the second template; An outer shielding layer is disposed between the first template and the second template, and between the first end mold core and the second end mold core; The workpiece body has two ends that are detachably disposed on the first end mold core and the second end mold core, respectively, and pass through the outer shielding layer; Wherein, at least the first end mold core, the second end mold core, the outer shielding layer and the workpiece body form a molding cavity, the molding cavity is used to form an insulating layer, the insulating layer connects the workpiece body and the outer shielding layer, and forms an integral structure.

2. The shielded copper busbar insulation injection molding tool of claim 1, wherein: The top of the first end mold core and / or the second end mold core has an exhaust hole, which communicates between the molding cavity and the outside.

3. The shielded copper busbar insulation injection molding tool of claim 1, wherein: The first end mold core has a first separation hole, which is connected between the molding cavity and the outside along the line connecting the two ends of the workpiece body. The end face of the workpiece body abuts against and closes the first separation hole.

4. The shielded copper busbar insulation injection molding tool of claim 1, wherein: The first end mold core includes a fixing part and a forming part. The forming part is connected to the fixing part. The forming part has a second cavity, which forms part of the forming cavity. The fixing part has a mounting hole, which communicates with the second cavity. One end of the workpiece body is mounted in the mounting hole and the mounting hole is sealed.

5. The shielded copper busbar insulation injection molding tool of claim 1, wherein: It also includes a first lifting component, which is connected to the first template and / or the second template to close or separate the first template and the second template.

6. The shielded copper busbar insulation injection molding tool of claim 1, wherein: It also includes a second lifting component, which is located below the first end mold core and / or the second end mold core, and is capable of separating the first end mold core, the second end mold core, the workpiece body, the outer shielding layer, and the insulating layer as a whole from the first template and the second template.

7. The shielded copper busbar insulation injection molding tool of claim 1, wherein: The outer peripheral surface of the workpiece body has an adhesive layer.

8. The shielded copper busbar insulation injection molding tool of claim 1, wherein: The outer peripheral surface of the outer shielding layer has a first snap-fit ​​portion, and the first template and / or the second template has a second snap-fit ​​portion on the inner peripheral surface of the first cavity, wherein the first snap-fit ​​portion snaps into the second snap-fit ​​portion.

9. The shielded copper busbar insulation injection molding tool of claim 8, wherein: The first snap-fit ​​portion has a first flow channel, which is connected to the molding cavity.

10. A copper busbar characterized by, include: Workpiece body; An insulating layer is provided on the outer peripheral surface of the main body; An outer shielding layer is disposed on the outer peripheral surface of the insulating layer; The insulating layer is injection molded, and the insulating layer connects the workpiece body and the outer shielding layer, forming an integral structure.

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