Plastic coating process for improving deformation degree of busbar single-sided plastic-coated part

Abstract

A plastic coating process for improving the deformation degree of a busbar single-side-coated plastic part comprises the following steps that 1, an injection mold is prepared and comprises an upper mold and a lower mold, mold grooves which are correspondingly matched with each other are formed in the opposite sides of the upper mold and the lower mold, and the groove bottom of the mold groove corresponding to the lower mold is of a structure with the middle higher than the two sides; 2, the plate is placed in a mold groove corresponding to a lower mold, downward pressure is applied to the two sides of the plate through a shaping mechanism, and the two sides of the plate are bent downwards and deformed; 3, the upper mold is arranged on the lower mold in a sealing and covering mode, and then injection molding is conducted; and 4, the upper mold is opened, the plate is taken out, plastic on the top side of the plate is shrunk when cooled, and the two sides of the plate are restored to the state before deformation. Compared with the prior art, the plastic coating process for improving the deformation degree of the busbar single-sided plastic-coated part has the advantages that the problem of damage and cracking of the plastic in the subsequent shaping step can be avoided, the product yield is increased, and the plastic coating process is suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding technology, and in particular to a molding process for improving the deformation degree of a single-side plastic-coated busbar part. Background Art

[0002] New energy battery packs require a single-sided plastic-coated conductive busbar, which is usually formed by single-sided injection molding of metal plates. The plastic coated on one side will shrink after cooling, causing the two sides of the metal plate to bend and deform toward the middle. The conductive busbar has requirements for flatness, so it is usually necessary to shape it, that is, to apply pressure to the conductive busbar using a pressurized shaping mechanism. The pressure process can easily cause cracks between the plastic and the metal plate, or even break the plastic, thereby reducing the production yield and efficiency of the conductive busbar.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a plastic coating process that improves the deformation degree of the plastic coating of the busbar single-side package to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide a plastic coating process for improving the deformation degree of the plastic coating of a busbar single side.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the present invention is: a plastic coating process for improving the deformation degree of a single-side plastic coating of a busbar, comprising the following steps: Step 1: prepare an injection mold, the injection mold comprising an upper mold and a lower mold, the upper mold and the lower mold are provided with mold grooves corresponding to each other on opposite sides, and the bottom of the mold groove corresponding to the lower mold is a structure with a high middle and low sides; Step 2: placing the plate into the corresponding die groove of the lower die, applying downward pressure to both sides of the plate through a shaping mechanism to bend and deform the both sides downward; Step 3: placing the upper mold sealing cover on the lower mold, and then performing injection molding; Step 4: Open the upper mold and take out the panel. The plastic on the top side of the panel shrinks when it is cooled and restores the two sides of the panel to the state before deformation.

[0006] The preferred technical solution is: the upper mold is provided with an injection hole, and the injection hole is connected to the mold groove corresponding to the upper mold.

[0007] The preferred technical solution is: a cooling cavity is provided in both the upper die and the lower die, and the cooling cavity is connected to an external cooling water circulation system.

[0008] Due to the application of the above technical solution, the present invention has the following beneficial effects: The present invention proposes a plastic-coating process for improving the deformation degree of the single-sided plastic-coated busbar. The plate is pre-shaped in the mold groove corresponding to the lower mold so that both sides of the plate are bent and deformed toward the bottom side. The plastic parts are then coated on the top side of the plate through the injection molding process. The plastic shrinks during the cooling process, so that both sides of the plate are pulled toward the top side and then restored to the state before deformation. Compared with the prior art, this process can avoid the problem of damage and cracking of the plastic in the subsequent shaping steps, thereby improving the product yield and being suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The present invention is a schematic diagram of the injection mold structure.

[0010] Figure 2 It is a schematic diagram of the lower mold structure involved in the present invention. DETAILED DESCRIPTION

[0011] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0012] See also Figure 1-Figure 2 . It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish the descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0013] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] Example: According to an overall technical concept of the present invention, a plastic coating process for improving the deformation degree of a single-side plastic coating of a busbar is provided, comprising the following steps: Step 1: prepare an injection mold 1, the injection mold 1 comprises an upper mold 11 and a lower mold 12, opposite sides of the upper mold 11 and the lower mold 12 are provided with mold grooves corresponding to each other, and the bottom of the mold groove 121 corresponding to the lower mold 12 is a structure with a high middle and low sides; Step 2: Place the plate into the corresponding die groove of the lower die 12, and apply downward pressure to both sides of the plate through a shaping mechanism (not shown) to bend and deform the two sides downward; Step 3: placing the sealing cover of the upper mold 11 on the lower mold 12, and then performing injection molding; Step 4: Open the upper mold 11 and take out the panel. The plastic on the top side of the panel shrinks when it is cooled and restores the two sides of the panel to the state before deformation.

[0015] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the upper mold 11 is provided with an injection hole 111 , and the injection hole 111 is connected to the mold groove corresponding to the upper mold 11 .

[0016] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, cooling cavities are provided in both the upper mold 11 and the lower mold 12, and the cooling cavities are connected to an external cooling water circulation system.

[0017] Therefore, the present invention has the following advantages: The present invention proposes a plastic-coating process for improving the deformation degree of the single-sided plastic-coated busbar. The plate is pre-shaped in the mold groove corresponding to the lower mold so that both sides of the plate are bent and deformed toward the bottom side. The plastic parts are then coated on the top side of the plate through the injection molding process. The plastic shrinks during the cooling process, so that both sides of the plate are pulled toward the top side and then restored to the state before deformation. Compared with the prior art, this process can avoid the problem of damage and cracking of the plastic in the subsequent shaping steps, thereby improving the product yield and being suitable for popularization and use.

[0018] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A plastic coating process for improving the deformation of a single plastic coating of a busbar, characterized in that: The following steps are involved: Step 1: prepare an injection mold, the injection mold comprising an upper mold and a lower mold, the upper mold and the lower mold are provided with mold grooves corresponding to each other on opposite sides, and the bottom of the mold groove corresponding to the lower mold is a structure with a high middle and low sides; Step 2: placing the plate into the corresponding die groove of the lower die, applying downward pressure to both sides of the plate through a shaping mechanism to bend and deform the both sides downward; Step 3: placing the upper mold sealing cover on the lower mold, and then performing injection molding; Step 4: Open the upper mold and take out the panel. The plastic on the top side of the panel shrinks when it is cooled and restores the two sides of the panel to the state before deformation.

2. The overmolding process for improving the deformation of a single-side plastic-coated busbar according to claim 1, characterized in that: The upper mold is provided with an injection hole, and the injection hole is connected to the mold groove corresponding to the upper mold.

3. The overmolding process for improving the deformation of a busbar single-side plastic-coated part according to claim 1, characterized in that: The upper mold and the lower mold are both provided with cooling cavities, and the cooling cavities are connected to an external cooling water circulation system.

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