High-voltage wiring hardware terminal product processing injection mold

Abstract

The utility model relates to a high -voltage wiring hardware terminal product processing injection mold, apply in injection technology field, solved the multilayer insert product that the existing injection molding mold processed will appear the risk of electrification breakdown, influence normal work's problem, including lower mould and upper mould, be provided with the lower mould cavity for placing the insert of laminating in the lower mould, be provided with the upper mould cavity with lower mould cavity cooperation in the upper mould, be provided with a plurality of lower positioning rod respectively for supporting every positioning convex end in the lower mould, the top of lower positioning rod extends to the lower mould cavity, the interval between two adjacent lower positioning rods is greater than 9mm, the position corresponding with every lower positioning rod in the upper mould is provided with upper positioning rod, the bottom of upper positioning rod extends to the upper mould cavity, after the mould closes, the bottom of upper positioning rod presses on positioning convex end, have guarantee the position degree of insert correct, will not appear the risk of high -voltage current breakdown, improve the effect of safety performance when working.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding technology, specifically relating to an injection mold for processing high-voltage wiring hardware terminal products. Background Technology

[0002] The existing patent publication number "CN211492610U" discloses an injection molding mold for a multi-layer insert product, which includes a male mold and a female mold. At least one positioning rod is embedded in the male mold and / or the female mold. Positioning holes are sequentially opened on the multi-layer insert. The positioning rod is used to insert into the positioning hole, and the size of the positioning hole on the insert gradually changes in the insertion direction of the positioning rod. The positioning rod has a rod portion and a positioning portion disposed at one end of the rod portion. The positioning portion is provided with a step that matches the positioning hole. The positioning portion of a single positioning rod passes through the positioning hole sequentially. The outer side of the step is clearance-fitted with the positioning hole, and the step surface of the step abuts against the insert.

[0003] The above description has the following problems: When this multi-layer insert product is injection molded using this injection molding mold, a positioning through hole is made on the product insert to cooperate with the positioning rod in order to achieve the positioning of the insert. Then, the positioning rod in the injection mold is inserted into this positioning through hole. After positioning is completed, the product is injected and cooled to form. When the product is energized and operated by the injection mold, the diameter of the exposed positioning through hole in the insert is small. There is a risk of electrical breakdown between the radially opposite sidewalls of the positioning through hole in the insert, which affects the normal operation of the product. Utility Model Content

[0004] The purpose of this utility model is to provide an injection mold for processing high-voltage wiring hardware terminal products, which solves the problem that multi-layer insert products processed by existing injection molding molds may have the risk of electrical breakdown, affecting normal operation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The purpose of this utility model is to provide an injection mold for processing high-voltage wiring hardware terminal products. The high-voltage wiring hardware terminal products include multi-layer inserts and injection molding parts wrapped around the inserts. The inserts are arc-shaped, and at least one positioning protrusion is provided on the radial outer edge surface of the inserts. The positioning protrusions on the multi-layer inserts are staggered. The injection mold includes a lower mold and an upper mold that cooperates with the lower mold. The lower mold has a lower mold cavity for placing the stacked inserts. The upper mold has an upper mold cavity that cooperates with the lower mold cavity. The lower mold has a plurality of lower positioning rods for supporting the ends of each positioning protrusion. The top of the lower positioning rods extends upward into the lower mold cavity. The distance between two adjacent lower positioning rods is greater than 9mm. An upper positioning rod is provided in the upper mold at a position corresponding to each of the lower positioning rods. The bottom end of the upper positioning rod extends downward into the upper mold cavity. After the mold is closed, the bottom end of the upper positioning rod presses against the positioning protrusion end.

[0006] Furthermore, both the lower positioning rod and the upper positioning rod have rectangular cross-sections.

[0007] Furthermore, a protrusion is provided on the outer edge of the bottom end of the upper positioning rod. The protrusion cooperates with the upper positioning rod to form a step. The transverse surface of the step abuts against the end of the positioning protrusion, and the thickness of the longitudinal surface of the step is equal to the thickness of the positioning protrusion.

[0008] Furthermore, the length of the transverse surface of the step is greater than or equal to 2 mm.

[0009] Furthermore, the upper mold cavity is provided with an insertion hole for the upper positioning rod to pass through, and the lower mold cavity is also provided with an insertion hole for the lower positioning rod to pass through. Each insertion hole is provided with a recess. In the mold closed state, the recess in the upper mold cavity and the recess in the lower mold cavity cooperate to form a sealed cavity for glue injection.

[0010] Furthermore, limit protrusions are provided on one side of the top end of the upper positioning rod and one side of the bottom end of the lower positioning rod.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model discloses an injection mold for processing high-voltage wiring hardware terminal products, including a lower mold and an upper mold that mates with the lower mold. The lower mold has a lower mold cavity for placing the stacked inserts, and the upper mold has an upper mold cavity that mates with the lower mold cavity. The lower mold has a plurality of lower positioning rods for supporting each positioning protrusion end, with the top end of each lower positioning rod extending upward into the lower mold cavity, and the distance between two adjacent lower positioning rods being greater than 9mm. The upper mold has an upper positioning rod at a position corresponding to each lower positioning rod, with the bottom end of each upper positioning rod extending downward into the upper mold cavity. After the mold is closed, the bottom end of the upper positioning rod presses against the positioning protrusion end. When processing this product, the injection mold with this structure can use the upper and lower positioning rods to press against the positioning protrusions on the insert, thereby positioning the insert and ensuring the correct position of the insert. There is no need to open positioning through holes on the insert. The distance between the two positioning protrusions in the injection molded product is a safe distance. When the power is applied, there is no risk of high voltage current breakdown between the two positioning protrusions, which improves the safety performance during operation. Attached Figure Description

[0012] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a structural schematic diagram of the high-voltage wiring hardware terminal product in a preferred embodiment of this utility model; Figure 2 This is a schematic diagram of the insert in a preferred embodiment of the present invention; Figure 3 This is a top view of the high-voltage wiring hardware terminal product in a preferred embodiment of this utility model; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the injection mold in a preferred embodiment of the present invention; Figure 6 yes Figure 5 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the lower mold in a preferred embodiment of the present invention; Figure 8 yes Figure 7 Enlarged view of point C in the middle; Figure 9 This is a schematic diagram of the upper mold in a preferred embodiment of the present invention; Figure 10 yes Figure 9 Enlarged view of point D in the middle.

[0013] The reference numerals in the attached figures are explained as follows: 1. Insert 1; 2. Injection part; 3. Positioning protrusion; 4. Lower mold; 5. Upper mold; 6. Lower mold cavity; 7. Upper mold cavity; 8. Lower positioning rod; 9. Upper positioning rod; 10. Limiting protrusion; 11. Protrusion; 12. Step; 13. Insertion hole; 14. Slot; 15. Insulating layer. Detailed Implementation

[0014] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] refer to Figures 1-4 This utility model provides an injection mold for processing high-voltage wiring hardware terminal products. The high-voltage wiring hardware terminal products include multi-layer inserts 1 and injection molded parts 2 that are partially wrapped around the outer periphery of the inserts 1 (the inserts have exposed portions).

[0018] refer to Figures 1-4 The multi-layer inserts 1 are stacked and need to be positioned before injection molding to ensure the correct position of the inserts 1. The inserts 1 are arc-shaped and at least one positioning protrusion 3 is provided on the radial outer edge surface of the inserts 1 along its circumference. In this example, there are two positioning protrusions 3 on the inserts. The positioning protrusions 3 on the multi-layer inserts 1 are staggered along the circumference.

[0019] refer to Figures 5-10 The injection mold includes a lower mold 4 and an upper mold 5 that mates with the lower mold 4. The lower mold 4 has a lower mold cavity 6, and the upper mold 5 has an upper mold cavity 7 that mates with the lower mold cavity 6. In the closed state, the lower mold cavity 6 and the upper mold cavity 7 mate to form a cavity for the injection-molded product. The lower mold 4 has multiple lower positioning rods 8 that support the ends of each positioning protrusion 3. The top ends of the lower positioning rods 8 extend upwards into the lower mold cavity 6, and the distance between two adjacent lower positioning rods 8 is greater than 9mm. The upper mold 5 has upper positioning rods 9 at positions corresponding to each lower positioning rod 8. The bottom ends of the upper positioning rods 9 extend downwards into the upper mold cavity 7. After the mold is closed, the bottom ends of the upper positioning rods 8 press against the upper surface of the positioning protrusion 3. In this invention, the distance between two adjacent lower positioning rods 8 is 10mm. Since the function of the lower positioning rods 8 and the upper positioning rods 9 is to press against the positioning protrusion 3, the distance between two adjacent positioning protrusions 3 in the product is also 10mm.

[0020] refer to Figure 5 and Figure 6During injection molding, the upper positioning rod 8 and the lower positioning rod 9 cooperate to press against the positioning protrusion 3 on the insert 1, thereby positioning the insert 1 and ensuring its correct position. Afterwards, the injection mold is used to inject the molten plastic, which surrounds a portion of the outer periphery of the insert 1 (the insert has an exposed portion) and then cools and solidifies. The distance between the two positioning protrusions 3 in the product injection molded by this mold is 10mm. This distance is a safety distance, so there is no risk of high-voltage current breakdown between the two positioning protrusions 3 when the product is energized with high voltage, improving safety performance during operation.

[0021] refer to Figure 5 and Figure 6 Limiting protrusions 10 are provided on one side of the top of the upper positioning rod 9 and one side of the bottom of the lower positioning rod 8. The limiting protrusions 10 can limit the positioning accuracy of the upper positioning rod 9 in the upper mold 5 or the lower positioning rod 8 in the lower mold 4, thereby improving the firmness and positioning accuracy of the upper positioning rod 9 and the lower positioning rod 8 in abutting the end of the positioning protrusion 3.

[0022] refer to Figure 5 and Figure 6 Both the lower positioning rod 8 and the upper positioning rod 9 have rectangular cross-sections. The rectangular design improves the stability and firmness of the upper positioning rod 9 and the lower positioning rod 10 in the injection mold. In addition, while ensuring that the upper positioning rod 9 and the lower positioning rod 8 cooperate to achieve precise positioning of the insert 1, the size of the through holes corresponding to the upper positioning rod 9 and the lower positioning rod 8 on the injection molded product can be reduced, thus improving the product's aesthetics.

[0023] refer to Figure 5 and Figure 6 The outer edge of the bottom end of the upper positioning rod 9 is provided with a protrusion 11. The protrusion 11 cooperates with the upper positioning rod 9 to form a step 12. The transverse surface of the step 12 abuts against the end of the positioning protrusion 3, and the thickness of the longitudinal surface of the step 12 is equal to the thickness of the positioning protrusion 3. Through the cooperation of the upper positioning rod 9 and the lower positioning rod 8, the axial and radial limits of the insert 1 can be achieved, further improving the positioning accuracy of the insert 1. The length of the transverse surface of the step 12 is greater than or equal to 2mm. The transverse surface of this step 1 completely covers the end of the positioning protrusion 3. While ensuring that the upper positioning rod 9 and the lower positioning rod 8 can abut against the positioning protrusion 3 to achieve accurate positioning of the insert, the exposed length of the end of the positioning protrusion 3 is reduced, thereby reducing the risk during operation of this product and improving safety performance.

[0024] refer to Figure 4 , Figure 7 , Figure 8 , Figure 9 and Figure 10The upper mold cavity 7 has an insertion hole 13 for the upper positioning rod 9 to pass through, and the lower mold cavity 6 also has an insertion hole 13 for the lower positioning rod 8 to pass through. Each insertion hole 13 has a countersunk groove 14 coaxially arranged with it. In the mold-closed state, the countersunk groove 14 in the upper mold cavity 7 and the countersunk groove 14 in the lower mold cavity 6 cooperate to form a sealed cavity for injection. After the mold is closed, the end of the positioning protrusion 3 is located in this sealed cavity. The upper positioning rod 9 and the lower positioning rod 8 are inserted into this sealed cavity and press against the end of the positioning protrusion 3 to achieve clamping and positioning of the end of the positioning protrusion. When the injection mold injects glue, the injection liquid enters this sealed cavity to cool and form an insulating layer 14. After forming, the end of the positioning protrusion 3 that is partially exposed outside the product is located in the corresponding insulating layer 14. It can play an insulating protection role during the subsequent operation of the product, avoid leakage, and improve the safety performance of the product when it is powered on.

[0025] In summary, when processing this product using an injection mold with this structure, the upper positioning rod 9 and the lower positioning rod 8 can work together to press against the positioning protrusion 3 on the insert 1, thereby achieving the positioning of the insert 1 and ensuring the correct position of the insert 1. There is no need to open a positioning through hole on the insert 1. The distance between the two positioning protrusions 3 in the injection molded product is a safe distance. When energized, there is no risk of high-voltage current breakdown between the two positioning protrusions 3, thus improving the safety performance during operation.

[0026] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-voltage wiring hardware terminal product processing injection mold, characterized in that, The high-voltage wiring hardware terminal product includes a multi-layer insert (1) and a glue-filled part wrapped around the multi-layer insert (1). The insert (1) is arc-shaped and at least one positioning protrusion (3) is provided on the radial outer edge surface of the insert (1). The positioning protrusions (3) on the multi-layer insert (1) are staggered. The injection mold includes a lower mold (4) and an upper mold (5) that mates with the lower mold (4). The lower mold (4) has a lower mold cavity (6) for placing the stacked inserts (1). The upper mold (5) has an upper mold cavity (7) that mates with the lower mold cavity (6). The lower mold (4) has a plurality of lower positioning rods (8) for supporting the ends of each positioning protrusion (3). The top of the lower positioning rods (8) extends upward into the lower mold cavity (6). The distance between two adjacent lower positioning rods (8) is greater than 9 mm. An upper positioning rod (9) is provided in the upper mold (5) at a position corresponding to each of the lower positioning rods (8). The bottom end of the upper positioning rod (9) extends downward into the upper mold cavity (7). After the mold is closed, the bottom end of the upper positioning rod (9) presses against the end of the positioning protrusion (3).

2. The injection mold for processing high-voltage wiring hardware terminal products according to claim 1, characterized in that, Both the lower positioning rod (8) and the upper positioning rod (9) have rectangular cross-sections.

3. The injection mold for processing high-voltage wiring hardware terminal products according to claim 1 or 2, characterized in that, The bottom outer edge of the upper positioning rod (9) is provided with a protrusion (11), the protrusion (11) and the upper positioning rod (9) cooperate to form a step (12), the transverse surface of the step (12) abuts against the end of the positioning protrusion (3), and the thickness of the longitudinal surface of the step (12) is equal to the thickness of the positioning protrusion (3).

4. The injection mold for processing high-voltage wiring hardware terminal products according to claim 3, characterized in that, The length of the transverse surface of the step (12) is greater than or equal to 2 mm.

5. The injection mold for processing high-voltage wiring hardware terminal products according to claim 1 or 4, characterized in that, The upper mold cavity (7) is provided with an insertion hole (13) through which the upper positioning rod (9) passes, and the lower mold cavity (6) is also provided with an insertion hole (13) through which the lower positioning rod (8) passes. Each insertion hole (13) is provided with a recess (14). In the mold closed state, the recess (14) in the upper mold cavity (7) and the recess (14) in the lower mold cavity (6) cooperate to form a sealed cavity for glue injection.

6. The injection mold for processing high-voltage wiring hardware terminal products according to claim 5, characterized in that, Limiting protrusions (10) are provided on one side of the top end of the upper positioning rod (9) and one side of the bottom end of the lower positioning rod (8).

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