Trapezoidal shell injection mold
By designing trapezoidal core and matching convex groove structure in the injection mold, combined with the split plate and material channel design, the problem of uneven wall thickness caused by the movement of the mold core is solved, and precise control of the injection molding process and product quality improvement is achieved.
Patent Information
- Application Number
- CN202420202220.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-26
AI Technical Summary
In the injection molding process of existing plastic shells, the mold core is prone to move, resulting in uneven wall thickness of the molded product, affecting its use.
Design a trapezoidal shell injection mold, by setting convex strips on the inner wall of the upper template, matching grooves on the outside of the mold core, and setting the mold core into a trapezoid to prevent movement, while introducing the split plate and material channels into the mold for uniform flow Plastic to ensure uniform wall thickness.
Effectively prevent the mold core from moving during the injection molding process, ensure uniform wall thickness of the molded product, and improve the accuracy and product quality of the injection molding process.
Smart Images
Figure CN222201456U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a trapezoidal shell injection mold. 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 high-pressure injection of heated and melted plastic into the mold cavity by the injection molding machine, and then it is formed 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 fields such as products with complex shapes. When the existing plastic shell products are undergoing the injection molding process, the mold core is prone to movement, resulting in uneven wall thickness of the molded product, which affects its use. Utility Model Content
[0003] 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.
[0004] The utility model discloses a trapezoidal shell injection mold, comprising an upper mold base, an upper mold plate, a lower mold plate and a lower mold base connected in sequence, the upper mold plate is arranged at the bottom of the upper mold base, the lower mold plate is arranged at the top of the lower mold base, and also comprises a mold core arranged in the lower mold plate, the cross section of the mold core is trapezoidal, the angle between the two long sides of the mold core and the lower mold base is greater than 90°, the lower mold plate is provided with a first through hole for placing the mold core, the shape of the first through hole matches the outer contour of the mold core, the two long sides of the mold core are provided with a plurality of grooves arranged at intervals, and the inner wall of the first through hole is provided with a plurality of convex strips adapted to the grooves.
[0005] In one of the embodiments, a diverter plate is provided between the mold core and the upper mold plate, a plurality of second through holes are provided on the diverter plate, a top of the diverter plate is connected to the upper mold plate, and a bottom of the diverter plate is in contact with the mold core.
[0006] In one of the embodiments, a receiving groove for placing the diverter plate is provided at the bottom of the upper template.
[0007] In one of the embodiments, a material channel is provided at the top of the upper template, and the material channel is connected to the containing groove.
[0008] In one of the embodiments, the upper mold base is provided with a gate, and the gate is arranged above the material channel.
[0009] In one embodiment, the gate is funnel-shaped.
[0010] In one embodiment, the upper die base, the upper die plate, the lower die plate and the lower die base are provided with connecting holes which pass through in sequence.
[0011] 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 diverter plate, and onto the mold core. After being cooled and solidified, a formed product is obtained. The utility model provides a plurality of convex strips on the inner wall of the upper mold plate, and a plurality of grooves matching the convex strips on the outer side of the mold core are provided. On the one hand, the cooperation of the convex strips and the grooves can position the mold core, prevent the mold core from moving when the heated and melted plastic flows through its surface, and avoid the situation of uneven thickness; on the other hand, setting the mold core into a trapezoid can also prevent the mold core from moving during pouring. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is an exploded schematic diagram of the structure of the utility model;
[0013] Figure 2 It is a structural schematic diagram of the upper template of the utility model;
[0014] Figure 3 It is a structural schematic diagram of the lower template of the utility model;
[0015] In the figure, 1, upper mold base, 2, upper mold plate, 3, lower mold plate, 4, lower mold base, 5, mold core, 6, first through hole, 7, groove, 8, convex strip, 9, diverter plate, 10, second through hole, 11, receiving groove, 12, material channel, 13, gate. DETAILED DESCRIPTION
[0016] 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.
[0017] 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.
[0018] 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.
[0019] like Figures 1 to 3As shown, the present embodiment discloses a trapezoidal shell 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 of the upper mold base 1, and the lower mold plate 3 is arranged at the top of the lower mold base 4, and also comprises a mold core 5 arranged in the lower mold plate 3, the cross section of the mold core 5 is trapezoidal, and the angle between the two long sides of the mold core 5 and the lower mold base 4 is greater than 90°, and the lower mold plate 3 is provided with a first through hole 6 for placing the mold core 5, and the shape of the first through hole 6 matches the outer contour of the mold core 5, and the two long sides of the mold core 5 are provided with a plurality of grooves 7 arranged at intervals, and the inner wall of the first through hole 6 is provided with a plurality of convex strips 8 adapted to the grooves 7.
[0020] In this embodiment, a diverter plate 9 is provided between the mold core 5 and the upper mold plate 2, and a plurality of second through holes 10 are provided on the diverter plate 9. The top of the diverter plate 9 is connected to the upper mold plate 2, and the bottom of the diverter plate 9 is in contact with the mold core 5. The heated and melted plastic flows through the diverter plate 9 through the material channel 12 and can flow evenly along the plurality of second through holes 10 provided on the diverter plate 9 to the gap between the mold core 5 and the upper mold plate 2, so that the wall thickness of the molded product can be uniform.
[0021] In this embodiment, a receiving groove 11 is provided at the bottom of the upper mold plate 2 for placing the diverter plate 9. A material channel 12 is provided at the top of the upper mold plate 2, and the material channel 12 is connected to the receiving groove 11. The heated and melted plastic is dispersed to the diverter plate 9 placed in the receiving groove 11 through the material channel 12, and the diversion of the diverter plate 9 can make the wall thickness of the molded product uniform.
[0022] In this embodiment, the upper mold base 4 is provided with a funnel-shaped gate 13 , and the gate 13 is arranged above the material channel 12 .
[0023] 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 connecting holes which pass through in sequence, and they are connected and fixed by an external connecting rod.
[0024] The heated and melted plastic flows through the material channel, through the diverter plate, and onto the mold core. After being cooled and solidified, a formed product is obtained. The utility model provides a plurality of convex strips on the inner wall of the upper mold plate, and a plurality of grooves matching the convex strips on the outer side of the mold core are provided. On the one hand, the cooperation of the convex strips and the grooves can position the mold core, preventing the mold core from moving when the heated and melted plastic flows through its surface, thereby avoiding the situation of uneven thickness; on the other hand, the mold core is set in a trapezoidal shape, which can also prevent the mold core from moving during pouring.
[0025] 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.
[0026] 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 trapezoidal shell 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 of the upper mold base, and the lower mold plate is arranged at the top of the lower mold base, characterized in that: It also includes a mold core arranged in the lower mold plate, the cross-section of the mold core is trapezoidal, the angle between the two long sides of the mold core and the lower mold base is greater than 90°, the lower mold plate is provided with a first through hole for placing the mold core, the shape of the first through hole matches the outer contour of the mold core, the two long sides of the mold core are provided with a plurality of grooves arranged at intervals, and the inner wall of the first through hole is provided with a plurality of convex strips adapted to the grooves.
2. The trapezoidal housing injection mold according to claim 1, characterized in that: A diverter plate is provided between the mold core and the upper mold plate, and a plurality of second through holes are provided on the diverter plate. The top of the diverter plate is connected to the upper mold plate, and the bottom of the diverter plate is in contact with the mold core.
3. The trapezoidal housing injection mold according to claim 2, characterized in that: The bottom of the upper template is provided with a receiving groove for placing the diverter plate.
4. The trapezoidal housing injection mold according to claim 3, characterized in that: A material channel is provided at the top of the upper template, and the material channel is communicated with the containing groove.
5. The trapezoidal housing injection mold according to claim 4, characterized in that: The upper mold base is provided with a gate, and the gate is arranged above the material channel.
6. The trapezoidal housing injection mold according to claim 5, characterized in that: The gate is funnel-shaped.
7. The trapezoidal 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 connecting holes which penetrate in sequence.