Storage battery shell injection mold
By setting the first flow channel groove and convex strip on the injection mold of the battery case, combining the fixing rod and the connecting hole, the problem of core movement is solved, and the uniform distribution of the plastic and the consistency of the dimensionality of the molded product is achieved.
Patent Information
- Application Number
- CN202420136957.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The existing battery shell injection molds are prone to core movement during injection molding, resulting in different thicknesses of molded products and affecting the use of products.
A battery shell injection mold is designed. By setting a plurality of first flow channel grooves on the inner wall of the upper template and corresponding convex strips on the outer side of the core, and matching the fixing rod and connecting holes, ensuring that the core is not easy to move during injection molding. And uniform distribution of the plastic is achieved through a funnel-like material channel and an adapted second runner channel channel.
Effectively prevent the core from moving during injection molding, avoiding different thicknesses, and ensuring that the plastic is evenly distributed on the core surface, improving the quality of molded products.
Smart Images
Figure CN222201518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to an injection mold for a battery shell. Background Art
[0002] Injection molds are tools for producing plastic products; they are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then forming it after cooling and solidification. It has the advantages of fast production speed, high efficiency, and precise dimensions, and is suitable for mass production and processing of complex-shaped products.
[0003] Electric vehicles are generally pure electric non-motorized vehicles powered by lead-acid batteries (batteries) and driven by electric motors. Considering safety, it is necessary to put a battery shell on the battery pack of electric vehicles to prevent it from being damaged by collision and squeezing. Most of the above battery shells can be directly molded by injection molding, but the existing injection molds are prone to core movement during injection molding, which leads to uneven thickness of the molded products, affecting the use of the products. Utility Model Content
[0004] Based on this, it is necessary to provide a battery housing injection mold to address the above problems, so that the core is not easy to move during injection molding and can be better positioned.
[0005] The utility model discloses a battery shell injection mold, comprising an upper mold base, an upper mold plate, a lower mold plate and a lower mold base which are connected in sequence, the upper mold plate is arranged at the bottom end of the upper mold base, the lower mold plate is arranged at the top end of the lower mold base, a core is arranged on the lower mold plate, the upper mold plate is provided with a through hole for placing the core, a side wall of the through hole is provided with a plurality of first flow channel grooves distributed at intervals, a plurality of convex strips distributed at intervals are provided on the outer side of the core, and each of the convex strips corresponds to one of the first flow channel grooves.
[0006] In one embodiment, a gap is left between the upper mold plate and the core, and the depth of the first flow channel groove is greater than the depth of the gap.
[0007] In one of the embodiments, a through channel is provided on the upper die base and the upper die plate, and the channel is connected to the gap.
[0008] In one of the embodiments, a fixing rod is provided at each of the four corners of the core, and the fixing rod passes through and connects the upper mold base, the upper mold plate and the core in sequence.
[0009] In one of the embodiments, a second flow channel groove recessed inwardly is provided on a side of the upper mold base away from the material channel, and the material channel is connected to the second flow channel groove.
[0010] In one embodiment, the outer contour of the second flow channel groove is matched with the contour of the core, and a gap is left between the second flow channel groove and the core.
[0011] In one embodiment, the material channel is funnel-shaped.
[0012] In one embodiment, the upper mold base, the upper mold plate, the lower mold plate and the lower mold base are provided with interconnecting connecting holes.
[0013] When the heated and melted plastic is injected into the mold cavity by the injection molding machine under high pressure, the heated and melted plastic flows through the material channel through the second flow channel groove until it reaches the core, and after being cooled and solidified, a formed product is obtained. The utility model arranges a plurality of first flow channel grooves on the inner wall of the upper mold plate and a plurality of convex strips corresponding to the first flow channel grooves on the outer side of the core. On the one hand, the cooperation of the convex strips and the first flow channel grooves can position the core, prevent the core from moving when the heated and melted plastic flows through its surface, and avoid the situation of uneven thickness; on the other hand, the first flow channel groove can also play a role in diverting the heated and melted plastic, so that the plastic can be evenly distributed on the surface of the core. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an exploded schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the upper die seat of the utility model;
[0016] Figure 3 It is a structural schematic diagram of the upper template of the utility model;
[0017] Figure 4 It is a structural schematic diagram of the lower template and the core of the utility model.
[0018] In the figure, 1, upper die base, 2, upper mold plate, 3, lower mold plate, 4, lower die base, 5, core, 6, through hole, 7, first flow channel groove, 8, convex strip, 9, material channel, 10, fixing rod, 11, second flow channel groove, 12, connecting hole. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0020] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.
[0022] like Figures 1 to 4 As shown, the present embodiment discloses a battery casing injection mold, comprising an upper mold base 1, an upper mold plate 2, a lower mold plate 3 and a lower mold base 4 connected in sequence, wherein the upper mold plate 2 is arranged at the bottom end of the upper mold base 1, the lower mold plate 3 is arranged at the top end of the lower mold base 4, a core 5 is provided on the lower mold plate 3, the upper mold plate 2 is provided with a through hole 6 for placing the core 5, the side wall of the through hole 6 is provided with a plurality of first flow channel grooves 7 distributed at intervals, and the outer side of the core 6 is provided with a plurality of convex strips 8 distributed at intervals, each of the convex strips 8 corresponds to one of the first flow channel grooves 7. By providing a plurality of first flow channel grooves 7 on the inner wall of the through hole 6 and a plurality of convex strips 8 corresponding to the first flow channel grooves on the outer side of the core 5, on the one hand, the cooperation of the convex strips 8 and the first flow channel grooves 7 can position the core 5, prevent the core 5 from moving when the heated and melted plastic flows through its surface, and avoid the situation of uneven thickness.
[0023] In this embodiment, a gap is left between the upper mold plate 2 and the core 5, and the gap facilitates the flow of hot-melt plastic; the depth of the first flow channel 7 is greater than the depth of the gap. In addition to allowing the hot-melt plastic to pass through, the first flow channel 7 can also play a positioning role for the core 5.
[0024] In this embodiment, a penetrating material channel 9 is provided on the upper mold base 1 and the upper mold plate 2, and the material channel 9 is funnel-shaped. A second flow channel groove 11 recessed inward is provided on the side of the upper mold base 1 away from the material channel 9. The material channel 9 is connected to the second flow channel groove 11. The second flow channel groove 11 can divert the hot-melt plastic entering therein, so that the plastic can be evenly distributed on the surface of the core 5.
[0025] Preferably, the outer contour of the second flow channel 7 is adapted to the contour of the core 5, and a gap is left between the second flow channel 11 and the core 5. The gap can facilitate the flow of hot melt plastic.
[0026] In this embodiment, a fixing rod 10 is provided at each of the four corners of the core 5, and the fixing rod 10 sequentially penetrates and connects the upper mold base 1, the upper mold plate 2 and the core 5. The fixing rod 10 fixes the core 5 to prevent it from moving during pouring.
[0027] In this embodiment, the upper die base 1, the upper die plate 2, the lower die plate 3 and the lower die base 4 are provided with interconnecting connecting holes 12. The upper die base 1, the upper die plate 2, the lower die plate 3 and the lower die base 4 are sequentially connected and fixed by connecting rods.
[0028] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0029] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A battery housing injection mold, comprising an upper mold base, an upper mold plate, a lower mold plate and a lower mold base connected in sequence, wherein the upper mold plate is arranged at the bottom end of the upper mold base, and the lower mold plate is arranged at the top end of the lower mold base, characterized in that: The lower mold plate is provided with a core, the upper mold plate is provided with a through hole for placing the core, the side wall of the through hole is provided with a plurality of first flow channel grooves distributed at intervals, the outer side of the core is provided with a plurality of convex strips distributed at intervals, and each convex strip corresponds to one of the first flow channel grooves.
2. The battery housing injection mold according to claim 1, characterized in that: A gap is left between the upper mold plate and the core, and the depth of the first flow channel groove is greater than the depth of the gap.
3. The battery housing injection mold according to claim 2, characterized in that: The upper die seat and the upper die plate are provided with a penetrating material channel, and the material channel is communicated with the gap.
4. The battery housing injection mold according to any one of claims 1 to 3, characterized in that: A fixing rod is respectively arranged at the four corners of the core, and the fixing rod passes through and connects the upper die seat, the upper die plate and the core in sequence.
5. The battery housing injection mold according to claim 3, characterized in that: A second flow channel groove recessed inwardly is provided on a side of the upper die seat away from the material channel, and the material channel is communicated with the second flow channel groove.
6. The battery housing injection mold according to claim 5, characterized in that: The outer contour of the second flow channel groove is matched with the contour of the core, and a gap is left between the second flow channel groove and the core.
7. The battery housing injection mold according to claim 3, characterized in that: The material channel is funnel-shaped.
8. The battery housing injection mold according to claim 1, characterized in that: The upper die base, the upper die plate, the lower die plate and the lower die base are provided with interconnecting connecting holes.