Injection molding mold for upper cover of charger

Abstract

The utility model discloses an injection molding mold for an upper cover of a charger. The injection molding mold comprises an upper mold, a lower mold and a pouring system, the upper die comprises a first upper die plate, a second upper die plate, an upper die core and an upper die core, and the upper die core comprises a mounting part and a forming part connected to the bottom of the mounting part; the lower mold comprises a lower mold plate, a lower mold core and an ejection mechanism, the ejection mechanism comprises an ejection block and an ejection rod, the top of the ejection block is provided with a first forming surface, the lower mold core is provided with a second through groove which is vertically through, and the upper section of the second through groove is provided with a second forming surface; the forming part, the first forming surface and the second forming surface jointly define an injection mold cavity for forming the upper cover of the charger, and the lower mold is provided with an air blowing channel for cooling the ejection block; the output end of the pouring system is exposed out of the bottom of the forming part. The upper cover of the charger is placed in the injection molding mold in an inverted mode, glue is fed from the inner surface of the upper cover of the charger, the appearance surface of the upper cover of the charger is free of sprue marks, and the appearance is more attractive.

Description

Technical Field

[0001] This utility model relates to the field of charger manufacturing technology, and in particular to an injection molding mold for a charger cover. Background Technology

[0002] The charger uses high-frequency power technology and advanced intelligent dynamic adjustment charging technology. The charger cover is a component of the charger. The production of the charger cover requires the use of molds. Molds are various molds and tools used in industrial production to obtain the desired products by methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping.

[0003] With the advancement of technology, the requirements for injection molding of product appearance are becoming increasingly stringent, and the appearance requirements for chargers are becoming more and more stringent. In the existing technology, the injection molding mold for charger cover usually uses top or side injection, which means that the gate mark will be on the appearance surface of the cover, affecting the aesthetics of the charger cover. In addition, the inner top wall of the charger cover has markings, and it is difficult to ensure that all ejector pins contact the charger cover at the same time during ejection. This makes the charger cover prone to shaking during ejection, causing the appearance surface of the charger cover to rub against the injection mold cavity, thus affecting the appearance of the charger cover.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of the above, this utility model addresses the deficiencies of the existing technology, and its main objective is to provide an injection molding mold for a charger cover. The upper mold core includes an mounting part and a molding part. The top of the ejector block has a first molding surface, and the upper part of the second through groove has a second molding surface. Both the molding part and the ejector block can extend into the second through groove. The molding part, the first molding surface, and the second molding surface together form an injection mold cavity for molding the charger cover, so that the charger cover is placed inverted in the injection molding mold. The output end of the gating system is exposed at the bottom of the molding part, and the glue is injected from the inner surface of the charger cover, so that the appearance of the charger cover is free of gate marks, making the appearance more beautiful. Furthermore, the ejection is directly performed using the first molding surface, which has good ejection balance and helps to improve product quality. In addition, the setting of the air blowing channel allows the molded charger cover to be quickly separated from the ejector block, which is conducive to product demolding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A charger cover injection molding mold includes a mold body, the mold body including an upper mold, a lower mold and a gating system;

[0008] The upper mold includes a first upper template, a second upper template, an upper mold core, and an upper mold core. The bottom of the first upper template is recessed with a first groove. The upper mold core includes an mounting part and a forming part connected to the bottom of the mounting part. The second upper template has a first through groove that runs vertically through it. An upper mold core mounting groove is provided on the side of the first through groove. The upper mold core is fixed in the upper mold core mounting groove and the mounting part is fixed in the first groove.

[0009] The lower mold includes a lower template, a lower mold core, and an ejection mechanism. The ejection mechanism includes an ejector block and an ejector rod. The top of the ejector block has a first forming surface, and the bottom of the ejector block has a slot. The top of the ejector rod is slidably engaged in the slot. The top of the lower template has a second recessed groove. The lower mold core is fixed in the second recessed groove. The lower mold core has a second through groove that runs vertically through it. The upper part of the second through groove has a second forming surface. Both the forming part and the ejector block can extend into the second through groove. The forming part, the first forming surface, and the second forming surface together form an injection mold cavity for forming the top cover of the charger. The lower mold is provided with an air blowing channel for cooling the ejector block. The air blowing channel connects the second through groove and the outside of the lower mold.

[0010] The output end of the gating system is exposed at the bottom of the molding section.

[0011] As a preferred embodiment, the upper mold further includes a top plate, a hot runner plate, and a mounting plate arranged sequentially from top to bottom. The first upper mold plate is located at the bottom of the mounting plate. The gating system includes a hot runner, a gating head connected to the hot runner, and a gating channel connected to the gating head. The hot runner is disposed on the hot runner plate, the gating head is disposed on the mounting plate, and the gating channel passes through the first upper mold plate and the upper mold core and is exposed at the bottom of the molding part.

[0012] As a preferred embodiment, the top of the upper mold core is provided with a boss, the boss is located in the first through groove, the top of the boss is recessed downward with a third groove, and the mounting part is sandwiched between the first groove and the third groove.

[0013] As a preferred embodiment, the bottom of the third groove is provided with a third through groove for the molding part to pass through. A connecting part is connected between the mounting part and the molding part. The connecting part is tapered with a larger top and a smaller bottom. Correspondingly, the third through groove has an inclined surface that matches the connecting part. The cooperation between the inclined surface and the connecting part can further ensure that the upper mold core is stable on the upper mold.

[0014] As a preferred embodiment, the second forming surface is recessed outward from the wall surface of the upper section of the second through groove.

[0015] As a preferred embodiment, the bottom of the second groove is provided with a downward-facing ejector block movable groove corresponding to the second through groove. The ejector block is movably disposed in the ejector block movable groove, and the bottom of the ejector block movable groove is provided with a clearance groove for the ejector rod to pass through.

[0016] As a preferred embodiment, the outer periphery of the ejector block's movable groove extends outward beyond the outer periphery of the second through groove, reducing frictional contact between the ejector block and the lower mold, thus making ejection smoother.

[0017] As a preferred embodiment, the ejection mechanism further includes an upper ejector plate and a lower ejector plate, with the bottom of the ejector rod fixed between the upper ejector plate and the lower ejector plate.

[0018] As a preferred embodiment, the input end of the air blowing channel is located on the side of the lower template, and the output end of the air blowing channel is exposed on the side wall of the second through groove. Correspondingly, an air passage groove corresponding to the output end of the air blowing channel is opened on the periphery of the ejector block, and an annular groove is also opened on the periphery of the ejector block. The annular groove is connected to the air passage groove. The setting of the annular groove makes the cooling of the ejector block more uniform.

[0019] As a preferred embodiment, four ejector blocks and four ejector rods are provided, and correspondingly, four forming parts are provided. The four forming parts protrude together from the bottom of the mounting part and are integrally formed, which facilitates the assembly of the upper mold core and allows four products to be formed at one time, resulting in high production efficiency.

[0020] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0021] The main features are as follows: the upper mold core includes an mounting part and a molding part; the top of the ejector block has a first molding surface; the upper part of the second through groove has a second molding surface; both the molding part and the ejector block can extend into the second through groove; the molding part, the first molding surface, and the second molding surface together form an injection mold cavity for molding the charger cover, so that the charger cover is placed inverted in the injection mold; the output end of the gating system is exposed at the bottom of the molding part; and the glue is injected from the inner surface of the charger cover, so that the appearance of the charger cover is free of gate marks, making the appearance more beautiful; and the first molding surface is used for ejection, which has good ejection balance and helps to improve product quality; and the setting of the air blowing channel allows the molded charger cover to be quickly separated from the ejector block, which is conducive to product demolding.

[0022] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1This is a perspective view of a preferred embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0025] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0026] Figure 4 This is a partial assembly diagram of a preferred embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the cooperation between the air blowing channel and the ejector block in a preferred embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the assembly of the injection mold cavity according to a preferred embodiment of the present invention.

[0029] Explanation of reference numerals in the attached diagram:

[0030] 10. Upper mold 11. First upper mold plate

[0031] 111. First groove; 12. Second upper template

[0032] 121. First through groove; 122. Upper mold core mounting groove

[0033] 13. Upper mold core 131. Boss

[0034] 132. Third groove; 133. Third through groove

[0035] 134. Incline 14. Upper mold core

[0036] 141. Mounting section; 142. Molding section

[0037] 143. Connecting part; 15. Top plate

[0038] 16. Hot runner plate 17. Mounting plate

[0039] 20. Lower mold 21. Lower template

[0040] 211. Second groove; 212. Ejector block movable groove

[0041] 213. Clearance groove; 22. Lower mold core

[0042] 221. Second through groove; 222. Second forming surface

[0043] 23. Ejection Mechanism 231. Ejection Block

[0044] 232, Top rod; 233, First forming surface

[0045] 234. Card slot; 235. Upper ejector plate

[0046] 236. Lower ejector plate; 237. Air passage groove

[0047] 238, Annular groove; 30, Gating system

[0048] 31. Hot runner; 32. Pour head

[0049] 33. Pouring channel; 40. Air blowing channel

[0050] 50. Cooling water passage. Detailed Implementation

[0051] First, it should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0052] Please refer to Figures 1 to 6 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a mold body, which includes an upper mold 10, a lower mold 20, and a gating system 30.

[0053] The upper mold 10 includes a first upper template 11, a second upper template 12, an upper mold core 13, and an upper mold core 14. The bottom of the first upper template 11 is recessed with a first groove 111. The upper mold core 14 includes a mounting part 141 and a forming part 142 connected to the bottom of the mounting part 141. The second upper template 12 has a first through groove 121 that runs vertically through it. An upper mold core mounting groove 122 is provided on the side of the first through groove 121. The upper mold core 13 is fixed in the upper mold core mounting groove 122 and the mounting part 141 is fixed in the first groove 111.

[0054] Specifically, see Figure 2 As shown, the upper mold 10 also includes a top plate 15, a hot runner plate 16, and a mounting plate 17 arranged sequentially from top to bottom. The first upper mold plate 11 is located at the bottom of the mounting plate 17. The top of the upper mold core 13 is provided with a boss 131, which is located in the first through groove 121. The top of the boss 131 is recessed downward with a third groove 132. The mounting part 141 is sandwiched between the first groove 111 and the third groove 132.

[0055] Furthermore, the bottom of the third groove 132 is provided with a third through groove 133 for the molding part 142 to pass through, and a connecting part 143 is connected between the mounting part 141 and the molding part 142; preferably, the connecting part 143 is tapered with a larger upper part and a smaller lower part, and correspondingly, the third through groove 133 has an inclined surface 134 that matches the connecting part 143. The cooperation between the inclined surface 134 and the connecting part 143 can further ensure that the upper mold core 14 is stable on the upper mold 10.

[0056] The lower mold 20 includes a lower template 21, a lower mold core 22, and an ejection mechanism 23. The ejection mechanism 23 includes an ejector block 231 and an ejector rod 232. The top of the ejector block 231 has a first forming surface 233, and the bottom of the ejector block 231 has a slot 234. The top of the ejector rod 232 is slidably engaged in the slot 234. The top of the lower template 21 has a downwardly recessed second groove 211, and the lower mold core 22 is fixed in the second groove 211. The lower mold core 22 has a second through groove 221 that extends vertically. The upper part of the second through groove 221 is provided with a second molding surface 222. The molding part 142 and the ejector block 231 can both extend into the second through groove 221. The slot 234 is provided to facilitate the installation of the ejector block 231 in the second through groove 221. The molding part 142, the first molding surface 233, and the second molding surface 222 together form an injection mold cavity for molding the charger cover. The lower mold 20 is provided with an air blowing channel 40 for cooling the ejector block 231. The air blowing channel 40 connects the second through groove 221 and the outside of the lower mold 20.

[0057] See Figure 2 and Figure 3 As shown, specifically, the second forming surface 222 is recessed outward from the upper part of the wall of the second through groove 221. The bottom of the second groove 211 is provided with an ejector block movable groove 212 corresponding to the second through groove 221. The ejector block 231 is movably disposed in the ejector block movable groove 212. The bottom of the ejector block movable groove 212 is provided with a clearance groove 213 for the ejector rod 232 to pass through. The outer periphery of the ejector block movable groove 212 extends outward beyond the outer periphery of the second through groove 221, reducing the frictional contact between the ejector block 231 and the lower mold 20, making the ejection smoother. The ejection mechanism 23 also includes an upper ejector plate 235 and a lower ejector plate 236. The bottom of the ejector rod 232 is fixed between the upper ejector plate 235 and the lower ejector plate 236.

[0058] The output end of the gating system 30 is exposed at the bottom of the molding section 142; specifically, see [reference needed]. Figure 2As shown, the gating system 30 includes a hot runner 31, a gating head 32 connected to the hot runner 31, and a gating channel 33 connected to the gating head 32. The hot runner 31 is disposed on the hot runner plate 16, the gating head 32 is disposed on the mounting plate 17, and the gating channel 33 passes through the first upper mold plate 11 and the upper mold core 14 and is exposed at the bottom of the forming part 142.

[0059] See Figure 4 As shown, both the upper mold core 13 and the lower mold core 22 are provided with cooling water channels 50 to accelerate the cooling of the upper mold core 13 and the lower mold core 22. The design of the cooling water channels 50 is a mature existing technology and will not be described in detail here.

[0060] See Figure 5 and Figure 6 As shown, the input end of the air blowing channel 40 is located on the side of the lower template 21, and the output end of the air blowing channel 40 is exposed on the side wall of the second through groove 221. Correspondingly, the periphery of the ejector block 231 is provided with an air passage groove 237 corresponding to the output end of the air blowing channel 40. The periphery of the ejector block 231 is also provided with an annular groove 238, which is connected to the air passage groove 237. The setting of the annular groove 238 makes the cooling of the ejector block 231 more uniform. In this embodiment, there are four ejector blocks 231 and four ejector rods. Correspondingly, there are four forming parts 142. The four forming parts 142 protrude together from the bottom of the mounting part 141. The four forming parts 142 are integrally formed, which is easy to assemble the upper mold core 14. Four products can be formed at one time, resulting in high production efficiency. There are two air blowing channels 40. The output end of the air blowing channel 40 is split to the air passage grooves 237 of the two ejector blocks 231.

[0061] The key design feature of this utility model is:

[0062] The main features are as follows: the upper mold core includes an mounting part and a molding part; the top of the ejector block has a first molding surface; the upper part of the second through groove has a second molding surface; both the molding part and the ejector block can extend into the second through groove; the molding part, the first molding surface, and the second molding surface together form an injection mold cavity for molding the charger cover, so that the charger cover is placed inverted in the injection mold; the output end of the gating system is exposed at the bottom of the molding part; and the glue is injected from the inner surface of the charger cover, so that the appearance of the charger cover is free of gate marks, making the appearance more beautiful; and the first molding surface is used for ejection, which has good ejection balance and helps to improve product quality; and the setting of the air blowing channel allows the molded charger cover to be quickly separated from the ejector block, which is conducive to product demolding.

[0063] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A charger cover injection molding mold, comprising a mold body, the mold body including an upper mold, a lower mold, and a gating system; characterized in that: The upper mold includes a first upper template, a second upper template, an upper mold core, and an upper mold core. The bottom of the first upper template is recessed with a first groove. The upper mold core includes an mounting part and a forming part connected to the bottom of the mounting part. The second upper template has a first through groove that runs vertically through it. An upper mold core mounting groove is provided on the side of the first through groove. The upper mold core is fixed in the upper mold core mounting groove and the mounting part is fixed in the first groove. The lower mold includes a lower template, a lower mold core, and an ejection mechanism. The ejection mechanism includes an ejector block and an ejector rod. The top of the ejector block has a first forming surface, and the bottom of the ejector block has a slot. The top of the ejector rod is slidably engaged in the slot. The top of the lower template has a second recessed groove. The lower mold core is fixed in the second recessed groove. The lower mold core has a second through groove that runs vertically through it. The upper part of the second through groove has a second forming surface. Both the forming part and the ejector block can extend into the second through groove. The forming part, the first forming surface, and the second forming surface together form an injection mold cavity for forming the top cover of the charger. The lower mold is provided with an air blowing channel for cooling the ejector block. The air blowing channel connects the second through groove and the outside of the lower mold. The output end of the gating system is exposed at the bottom of the molding section.

2. The injection molding mold for a charger cover according to claim 1, characterized in that: The upper mold also includes a top plate, a hot runner plate, and a mounting plate arranged sequentially from top to bottom. The first upper mold plate is located at the bottom of the mounting plate. The gating system includes a hot runner, a gating head connected to the hot runner, and a gating channel connected to the gating head. The hot runner is disposed on the hot runner plate, and the gating head is disposed on the mounting plate. The gating channel passes through the first upper mold plate and the upper mold core and is exposed at the bottom of the molding part.

3. The injection molding mold for a charger cover according to claim 1, characterized in that: The top of the upper mold core is provided with a boss, which is located in the first through groove. The top of the boss is recessed downward with a third groove, and the mounting part is sandwiched between the first groove and the third groove.

4. The injection molding mold for a charger cover according to claim 3, characterized in that: The bottom of the third groove is provided with a third through groove for the molding part to pass through. A connecting part is connected between the mounting part and the molding part. The connecting part is tapered, with a larger top and a smaller bottom. Correspondingly, the third through groove has a slope that matches the connecting part.

5. The injection molding mold for a charger cover according to claim 1, characterized in that: The second forming surface is recessed outward from the wall surface of the upper section of the second through groove.

6. The injection molding mold for a charger cover according to claim 1, characterized in that: The bottom of the second groove is provided with a downward-facing ejector block movable groove corresponding to the second through groove. The ejector block is movably disposed in the ejector block movable groove. The bottom of the ejector block movable groove is provided with a clearance groove for the ejector rod to pass through.

7. The injection molding mold for a charger cover according to claim 6, characterized in that: The outer periphery of the ejector block movable groove extends outward beyond the outer periphery of the second through groove.

8. The injection molding mold for a charger cover according to claim 1, characterized in that: The ejection mechanism further includes an upper ejector plate and a lower ejector plate, and the bottom of the ejector rod is fixed between the upper ejector plate and the lower ejector plate.

9. The injection molding mold for a charger cover according to claim 1, characterized in that: The input end of the air blowing channel is located on the side of the lower template, and the output end of the air blowing channel is exposed on the side wall of the second through groove. Correspondingly, the periphery of the ejector block is provided with an air passage groove corresponding to the output end of the air blowing channel, and the periphery of the ejector block is also provided with an annular groove, which is connected to the air passage groove.

10. The injection molding mold for a charger cover according to claim 1, characterized in that: There are four ejector blocks and four ejector rods. Correspondingly, there are four forming parts, which protrude together from the bottom of the mounting part.

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