A high flatness battery mold

Abstract

The utility model provides a high flatness's battery mould, including upper die body and lower die body, be provided with upper die core on the upper die body, be provided with lower die core on the lower die body, form the cavity for forming battery middle cover between upper die core and lower die core, be provided with stripping mechanism on the lower die body, and the stripping mechanism includes the push board, be provided with a plurality of inclined jacking assembly on the push board. The utility model discloses above -mentioned structure, through the flat support head and extension support part of inclined jacking rod as a part of cavity inner wall, extension support part is located at the place of cross -grid busbar exhaust passage, can make this position form wall thickness thinning area, to reduce the wall thickness when forming this position, can guarantee the shrinkage even when cooling, avoid the front surface of battery middle cover to appear recess, to guarantee the appearance quality of battery middle cover front surface, through the push board of stripping mechanism push inclined jacking base and inclined jacking rod, can make inclined jacking rod move to one side when pushing battery middle cover, thereby separates the rubber area, realizes stripping.

Description

Technical Field

[0001] This utility model relates to the field of battery mold technology, and in particular to a battery mold with high flatness. Background Technology

[0002] The battery cover is an important component of a battery and is typically manufactured using injection molding. In its structural design, the battery cover includes a filler hole and a vent. The filler hole is used to inject electrolyte into the battery, while the vent is used to release gases generated during battery use, preventing gas explosions due to accumulation. In existing technology, a cross-cell venting channel is usually provided between the filler hole and the separator, corresponding to the vent, to collect and discharge gases generated by each individual cell.

[0003] However, in the design of existing battery cover molds, the wall thickness at the cross-cell venting channel is too large. As a result, during the injection molding process, due to the uneven cooling and shrinkage of the plastic melt, surface shrinkage marks and dents appear on the front (appearance surface) of the battery cover corresponding to the cross-cell venting channel, which seriously affects the appearance quality of the product. Utility Model Content

[0004] This utility model discloses a high-flatness battery mold, which mainly solves the problem that when producing the battery cover, the wall thickness at the cross-grid confluence and exhaust channel of the existing battery mold is too large, which easily causes uneven cooling and shrinkage of the plastic melt and forms surface shrinkage grooves.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows: This utility model provides a high-flatness battery mold, including an upper mold body and a lower mold body. An upper mold core is provided on the upper mold body, and a lower mold core is provided on the lower mold body. A cavity for forming a battery cover is formed between the upper mold core and the lower mold core. A demolding mechanism is provided on the lower mold body. The demolding mechanism includes a push plate, and multiple inclined ejector components are provided on the push plate. The inclined ejector assembly includes an inclined ejector base and an inclined ejector rod mounted on a push plate. One end of the inclined ejector rod is slidably connected to the inclined ejector base, and the other end passes through the lower mold body and the lower mold core in sequence. A flat support head is provided at the end of the inclined ejector rod away from the inclined ejector base. An extended support part is provided on the flat support head. The flat support head and the extended support part are part of the cavity wall. The flat support head is supported at the position corresponding to the partition on the back of the battery cover. The extended support part extends into the cross-grid venting channel corresponding to the vent hole on the back of the battery cover, so that the wall thickness reduction area is formed at this position.

[0006] In one embodiment, the inclined top base is provided with a sliding groove, the inclined top rod is slidably connected in the sliding groove, the inclined top base is provided with a limiting protrusion at the opening of the sliding groove, the inclined top rod is provided with a limiting groove at the position of the limiting protrusion, and the limiting protrusion is disposed in the limiting groove.

[0007] In one embodiment, the lower mold core is provided with a first oblique guide hole at the position corresponding to the oblique ejector rod, and the first oblique guide hole is adapted to the oblique ejector rod.

[0008] In one embodiment, the inclined ejector assembly further includes an auxiliary guide block mounted on the lower mold body, the auxiliary guide block having a second inclined guide hole adapted to the inclined ejector rod.

[0009] In one embodiment, the flat support head is provided with a groove at the position corresponding to the partition plate, and the groove serves as part of the cavity wall to form the partition plate of part of the battery cover.

[0010] In one embodiment, the flat support head is provided with a groove corresponding to the position of the filling hole of the battery cover. The groove serves as part of the cavity wall and is used to form part of the outer wall of the filling hole of the battery cover.

[0011] In one embodiment, the demolding mechanism further includes a plurality of demolding pins, one end of which is mounted on a push plate and the other end of which passes through the lower mold body and the lower mold core in sequence, so that the end surface of the demolding pins serves as part of the cavity wall.

[0012] The advantages or beneficial effects of the above technical solution include at least the following: Because a slanted ejector assembly is provided on the demolding mechanism of the lower mold body, the slanted ejector base and slanted ejector rod of the slanted ejector assembly, during injection molding, utilize the flat support head and extended support portion of the slanted ejector rod as part of the cavity wall. The extended support portion is located at the cross-grid confluence and exhaust channel, which allows a wall thickness reduction area to be formed at this location, thereby reducing the wall thickness during molding. This ensures uniform shrinkage during cooling, preventing dents on the front of the battery cover and ensuring the appearance quality of the front of the battery cover. During mold opening and demolding, the ejector plate of the demolding mechanism pushes the slanted ejector base and slanted ejector rod, causing the slanted ejector rod to eject the battery cover. During this process, because the slanted ejector base and slanted ejector rod are slidably connected, the slanted ejector rod can move to one side when pushing the battery cover, thereby disengaging from the ejection area and achieving demolding. Attached Figure Description

[0013] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0014] Figure 1 A schematic diagram of a battery mold according to the present invention is shown; Figure 2 The present invention is shown Figure 1 A cross-sectional schematic diagram; Figure 3 A schematic diagram of the inclined top assembly according to the present invention is shown; Figure 4 A schematic diagram of the battery cover and the inclined push rod according to the present invention is shown.

[0015] Explanation of reference numerals in the attached figures: 1. Upper mold body; 2. Lower mold body; 3. Upper mold core; 4. Lower mold core; 41. First oblique guide hole; 5. Battery cover; 51. Partition plate; 52. Cross-compartment venting channel; 521. Wall thickness reduction area; 53. Liquid filling hole; 6. Demolding mechanism; 61. Push plate; 62. Demolding pin; 7. Sloping roof assembly; 71. Inclined top base; 711. Slide groove; 712. Limiting protrusion; 72. Inclined top rod; 721. Flat support head; 722. Extended support part; 723. Limiting groove; 724. Partition groove; 725. Hole groove; 73. Auxiliary guide block; 731. Second inclined guide hole. Detailed Implementation

[0016] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0017] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0019] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0020] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0021] See Figures 1 to 4 The present invention provides a high flatness battery mold, including an upper mold body 1 and a lower mold body 2. An upper mold core 3 is provided on the upper mold body 1, and a lower mold core 4 is provided on the lower mold body 2. A cavity for molding the battery cover 5 is formed between the upper mold core 3 and the lower mold core 4. A demolding mechanism 6 is provided on the lower mold body 2. The demolding mechanism 6 includes a push plate 61 and multiple inclined ejector components 7 are provided on the push plate 61. The inclined ejector assembly 7 includes an inclined ejector base 71 and an inclined ejector rod 72 mounted on the push plate 61. One end of the inclined ejector rod 72 is slidably connected to the inclined ejector base 71, and the other end passes through the lower mold body 2 and the lower mold core 4 in sequence. A flat support head 721 is provided at the end of the inclined ejector rod 72 away from the inclined ejector base 71. An extension support part 722 is provided on the flat support head 721. The flat support head 721 and the extension support part 722 are part of the cavity wall. The flat support head 721 is supported on the back of the battery cover 5 at the position corresponding to the partition 51. The extension support part 722 extends into the cross-grid confluence exhaust channel 52 on the back of the battery cover 5 corresponding to the exhaust hole, so that the wall thickness reduction area 521 is formed at this position.

[0022] With the above structure, since the inclined ejector assembly 7 is provided on the demolding mechanism 6 of the lower mold body 2, the inclined ejector base 71 and the inclined ejector rod 72 of the inclined ejector assembly 7 cooperate to form a wall-thinning area 521 at the cross-grid venting channel 52 during injection molding. This reduces the wall thickness at the molding location, ensuring uniform shrinkage during cooling and preventing dents on the front of the battery cover 5. This ensures the appearance quality of the front of the battery cover 5. During demolding, the push plate 61 of the demolding mechanism 6 pushes the inclined ejector base 71 and the inclined ejector rod 72, causing the inclined ejector rod 72 to push out the battery cover 5. During this process, since the inclined ejector base 71 and the inclined ejector rod 72 are slidably connected, the inclined ejector rod 72 can move to one side when pushing the battery cover 5, thereby separating from the ejection area and achieving demolding.

[0023] In one embodiment, see Figure 3 and Figure 4 In order to achieve a sliding connection between the inclined base 71 and the inclined rod 72, the inclined base 71 is provided with a groove 711, the inclined rod 72 is slidably connected in the groove 711, the inclined base 71 is provided with a limiting protrusion 712 at the opening of the groove 711, and the inclined rod 72 is provided with a limiting groove 723 at the position of the limiting protrusion 712, the limiting protrusion 712 is provided in the limiting groove 723.

[0024] In order to guide the inclined ejector rod 72 when it extends out of the lower mold core 4, the lower mold core 4 is provided with a first inclined guide hole 41 corresponding to the position of the inclined ejector rod 72, and the first inclined guide hole 41 is adapted to the inclined ejector rod 72.

[0025] To ensure stable guidance when the angled ejector rod 72 extends out of the lower mold core 4, the angled ejector assembly 7 also includes an auxiliary guide block 73 installed on the lower mold body 2. The auxiliary guide block 73 is provided with a second angled guide hole 731 that is adapted to the angled ejector rod 72.

[0026] The lower mold body 2 has a vertical clearance hole corresponding to the position of the inclined ejector rod 72, so that the inclined ejector rod 72 can pass through the lower mold body 2. The lower mold body 2 has a groove corresponding to the position of the auxiliary guide block 73, so that the auxiliary guide block 73 can be installed in the lower mold body 2.

[0027] In order to facilitate the flat support head 721 to pass through the partition 51 and be supported on the back of the battery cover 5, the flat support head 721 is provided with a groove 724 corresponding to the position of the partition 51. The groove 724 is part of the cavity wall and is used to form part of the partition 51 of the battery cover 5.

[0028] In order to facilitate the flat support head 721 to pass through the filling hole 53 and be supported on the back of the battery cover 5, the flat support head 721 is provided with a groove 725 corresponding to the position of the filling hole 53 of the battery cover 5. The groove 725 is part of the cavity wall and is used to form part of the outer wall of the filling hole 53 of the battery cover 5.

[0029] In one embodiment, see Figure 2 In order to ensure the demolding function of the demolding mechanism 6, the demolding mechanism 6 also includes a plurality of demolding pins 62. One end of the plurality of demolding pins 62 is mounted on the push plate 61, and the other end passes through the lower mold body 2 and the lower mold core 4 in sequence, so that the end surface of the demolding pins 62 is part of the cavity wall.

[0030] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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.

[0031] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A high-flatness battery mold, characterized in that, It includes an upper mold body and a lower mold body. The upper mold body is provided with an upper mold core, and the lower mold body is provided with a lower mold core. A cavity for molding the middle cover of the battery is formed between the upper mold core and the lower mold core. The lower mold body is provided with a demolding mechanism, which includes a push plate and multiple inclined ejector components. The inclined ejector assembly includes an inclined ejector base and an inclined ejector rod mounted on a push plate. One end of the inclined ejector rod is slidably connected to the inclined ejector base, and the other end passes through the lower mold body and the lower mold core in sequence. A flat support head is provided at the end of the inclined ejector rod away from the inclined ejector base. An extended support part is provided on the flat support head. The flat support head and the extended support part are part of the cavity wall. The flat support head is supported at the position corresponding to the partition on the back of the battery cover. The extended support part extends into the cross-grid venting channel corresponding to the vent hole on the back of the battery cover, so that the wall thickness reduction area is formed at this position.

2. The high-flatness battery mold as described in claim 1, characterized in that, The inclined base is provided with a sliding groove, the inclined rod is slidably connected in the sliding groove, the inclined base is provided with a limiting protrusion at the opening of the sliding groove, the inclined rod is provided with a limiting groove at the position of the limiting protrusion, and the limiting protrusion is provided in the limiting groove.

3. The high-flatness battery mold as described in claim 1, characterized in that, The lower mold core is provided with a first oblique guide hole at the position corresponding to the oblique ejector rod, and the first oblique guide hole is adapted to the oblique ejector rod.

4. The high-flatness battery mold as described in claim 3, characterized in that, The inclined ejector assembly also includes an auxiliary guide block installed on the lower mold body, and the auxiliary guide block is provided with a second inclined guide hole adapted to the inclined ejector rod.

5. The high-flatness battery mold as described in claim 1, characterized in that, The flat support head is provided with a groove at the position corresponding to the partition plate. The groove, as part of the cavity wall, is used to form the partition plate of part of the battery cover.

6. The high-flatness battery mold as described in claim 1, characterized in that, The flat support head is provided with a groove corresponding to the position of the filling hole of the battery cover. The groove serves as part of the cavity wall and is used to form part of the outer wall of the filling hole of the battery cover.

7. The high-flatness battery mold as described in claim 1, characterized in that, The demolding mechanism also includes a plurality of demolding pins, one end of which is mounted on a push plate and the other end passes through the lower mold body and the lower mold core in sequence, so that the end surface of the demolding pins serves as part of the cavity wall.

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