Power supply shell injection mold and injection molding method

Abstract

The invention discloses a power supply shell injection mold and an injection molding method. An energy storage power supply shell and a power-up package shell can be manufactured through only one set of mold. The power supply shell injection mold comprises an upper mold body and a lower mold body, a cavity is formed when the upper mold body and the lower mold body are attached, the upper mold body comprises an upper mold body, a first insert, a second insert, a third insert and a fourth insert, and a first mounting hole penetrating in the vertical direction and a second mounting hole penetrating in the vertical direction are formed in the left side and the right side of the upper mold body correspondingly; the first insert or the third insert penetrates into the first mounting hole, the second insert or the fourth insert penetrates into the second mounting hole, the third insert and the fourth insert are each provided with a plurality of first structure gaps, and a second structure gap is defined between the third insert mounted in the first mounting hole and the left side wall of the upper die body. And a second structural gap is also defined between the fourth insert mounted in the second mounting hole and the right side wall of the upper die body, and the second structural gap is communicated with the first structural gap.

Description

Technical Field

[0001] The present invention relates to the field of power supply housing injection molding, and in particular to a power supply housing injection molding mold and an injection molding method Background Art

[0002] Injection molds are tools for producing plastic products and also tools for giving plastic products complete structures and precise dimensions. Injection molding is a processing method used in mass production of certain complex parts. Specifically, it refers to injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product.

[0003] In the prior art, increasing the capacity of the energy storage power supply is generally achieved by increasing the volume of the equipment or incorporating a power pack. The shell of the power pack is basically the same as the shell of the energy storage power supply, but because the output power of the power pack is relatively small and the heat generation is small, more battery cells can be loaded into the power pack. For example, the energy storage power supply is loaded with 11 battery cells, while the power pack is loaded with 14 battery cells, increasing the capacity of the power pack. The shell of the power pack is basically the same as the shell of the energy storage power supply. The only difference is that the internal arrangement of the shell is different. The cavity of the shell of the energy storage power supply is provided with a side plate for filling, while the power pack does not need to be provided with a side plate. At present, only these two differences require two sets of molds, which greatly increases the production cost and has low production flexibility.

[0004] Therefore, there is an urgent need for a power supply shell injection mold and an injection molding method that can respectively manufacture an energy storage power supply shell and a power pack shell using only one set of molds to overcome the above-mentioned defects. Summary of the invention

[0005] The object of the present invention is to provide a power supply housing injection mold which can manufacture an energy storage power supply housing and a power pack housing respectively with only one set of molds.

[0006] Another object of the present invention is to provide a power supply housing injection molding method that can manufacture the energy storage power supply housing and the power pack housing respectively using only one set of molds.

[0007] In order to achieve the above-mentioned purpose, the power supply shell injection mold provided by the present invention is suitable for injection molding power supply shells, the energy storage power supply includes a left side plate, a right side plate and a bottom side plate respectively connected to the left side plate and the right side plate, the power supply shell injection mold of the present invention includes an upper mold and a lower mold, and a cavity is formed when the upper mold and the lower mold are fitted together, the upper mold includes an upper mold body, a first insert, a second insert, a third insert and a fourth insert, the left and right sides of the upper mold body are respectively provided with a first mounting hole penetrating in the up and down direction and a second mounting hole penetrating in the up and down direction, the first insert or the third insert is inserted into the first mounting hole and placed outside the left side wall of the upper mold body, the second insert or the fourth insert is inserted into the second mounting hole The holes are arranged outside the right side wall of the upper mold body, and the third insert and the fourth insert are respectively provided with a plurality of first structural gaps, the first structural gaps extend in the up-down direction, and the plurality of first structural gaps are arranged at intervals in the front-to-back direction, a second structural gap is enclosed between the third insert installed in the first mounting hole and the left side wall of the upper mold body, a second structural gap is also enclosed between the fourth insert installed in the second mounting hole and the right side wall of the upper mold body, the second structural gap is connected with the first structural gap, the first insert and the second insert are both complete continuous structures, the first insert installed in the first mounting hole is close to the left side wall of the upper mold body, and the second insert installed in the second mounting hole is close to the right side wall of the upper mold body.

[0008] Preferably, a left side accommodating groove is formed on the left side wall of the upper mold body, and the left side accommodating groove is communicated with the first mounting hole.

[0009] Preferably, a right side accommodating groove is formed on the right side wall of the upper mold body, and the right side accommodating groove is communicated with the second mounting hole.

[0010] Preferably, the upper end portion of the left side of the upper mold body extends toward the left side to form a left side extension portion, and the upper end portion of the right side of the upper mold body extends toward the right side to form a right side extension portion.

[0011] Preferably, four peripheral corners of the lower end of the upper mold body are formed with insertion positioning blocks that are separated from the upper mold body.

[0012] Preferably, the lower mold includes a lower mold body and a lower side plate connected to the left and right sides of the lower mold body and extending upward.

[0013] Preferably, a structural groove extending along the front-rear direction is respectively formed on the left and right sides of the top of the lower mold body.

[0014] Preferably, the first insert and the third insert are detachably mounted on the first mounting hole, and the second insert and the fourth insert are detachably mounted on the second mounting hole.

[0015] Preferably, an ejection mechanism is also installed on the lower die.

[0016] To achieve the above-mentioned second purpose, the present invention also provides a power supply casing injection molding method, comprising the following steps: (1) selecting a first assembly mode or a second assembly mode according to the structural form of the power supply casing to be produced. In the first assembly mode, an upper mold body, a third insert and a fourth insert are used, the third insert is installed in the first mounting hole, and the fourth insert is installed in the second mounting hole. In the second assembly mode, an upper mold body, a first insert and a second insert are used, the first insert is installed in the first mounting hole, and the second insert is installed in the second mounting hole; (2) the upper mold and the lower mold are closed and locked, and plastic is injected into the cavity; (3) the mold is opened after maintaining pressure, and the injection molded product is ejected by the ejection mechanism on the lower mold.

[0017] Compared with the prior art, the present invention is used to produce the power pack shell by combining the first insert, the second insert and the upper mold body, and is used to produce the energy storage power supply shell by combining the third insert, the fourth insert and the upper mold body. The first insert and the third insert are installed in the first mounting hole, and the second insert and the fourth insert are installed in the second mounting hole. The same upper mold and lower mold can be used for injection molding production. When switching production, only the corresponding insert needs to be replaced, and there is no need to set up two different molds to produce the energy storage power supply shell and the power pack shell respectively, which reduces production costs and helps to improve production flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The upper mold is formed by combining the third insert, the fourth insert and the upper mold body of the present invention, and is a front view of the upper mold and the lower mold when they cooperate to produce the power-up pack shell.

[0019] Figure 2 yes Figure 1 The power supply housing injection mold is shown in a three-dimensional view after the lower mold is hidden.

[0020] Figure 3 yes Figure 2 A perspective view of the structure shown after separation from the upper mold.

[0021] Figure 4 yes Figure 3 The structure shown is a three-dimensional view after being further separated from the third insert and the fourth insert.

[0022] Figure 5 is along Figure 1 Section view cut along the AA line and after hiding the lower mold.

[0023] Figure 6 The upper mold is formed by combining the first insert, the second insert and the upper mold body of the present invention, and is a front view of the upper mold and the lower mold when they cooperate to produce the energy storage power supply housing.

[0024] Figure 7 yes Figure 6The power supply housing injection mold is shown in a three-dimensional view after the lower mold is hidden.

[0025] Figure 8 yes Figure 7 A perspective view of the structure shown after separation from the upper mold.

[0026] Fig. 9 yes Figure 8 The structure shown is a three-dimensional view after being further separated from the first insert and the second insert.

[0027] Fig.10 is along Figure 6 Section view cut along the BB line and after hiding the lower die. DETAILED DESCRIPTION

[0028] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0029] like Figures 1 to 4 As shown, the present invention discloses a power supply housing injection mold 100, which is suitable for injection molding a power supply housing. The power supply housing comprises a left side plate 011, a right side plate 012 and a bottom side plate 013 connected to the left side plate 011 and the right side plate 012 respectively.

[0030] like Figures 1 to 10As shown, the power supply housing injection mold 100 of the present invention includes an upper mold 10 and a lower mold 20, and a cavity is formed when the upper mold 10 and the lower mold 20 are attached. The upper mold 10 includes an upper mold body 11, a first insert 12, a second insert 13, a third insert 14 and a fourth insert 15. The left and right sides of the upper mold body 11 are respectively provided with a first mounting hole 111 penetrating in the up-down direction and a second mounting hole 112 penetrating in the up-down direction. The first insert 12 or the third insert 14 is inserted into the first mounting hole 111 and placed outside the left side wall of the upper mold body 11, and the second insert 13 or the fourth insert 15 is inserted into the second mounting hole 112 and placed outside the right side wall of the upper mold body 11. The third insert 14 and the fourth insert 15 are respectively provided with a plurality of first structural gaps 101, the first structural gaps 101 extend in the up-down direction, and the plurality of first structural gaps 101 are arranged at intervals in the front-back direction. A second structural gap 102 is enclosed between the third insert 14 installed in the first mounting hole 111 and the left side wall of the upper mold body 11, and the second structural gap 102 is connected to the first structural gap 101. A second structural gap 102 is also enclosed between the fourth insert 15 installed in the second mounting hole 112 and the right side wall of the upper mold body 11. The second structural gap 102 is connected to the first structural gap 101. The first insert 12 and the second insert 13 are both complete continuous structures. The first insert 12 installed in the first mounting hole 111 is tightly attached to the left side wall of the upper mold body 11, and there is no gap between them. The second insert 13 installed in the second mounting hole 112 is tightly attached to the right side wall of the upper mold body 11, and there is no gap between them.

[0031] like Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, the power supply housing of the present invention includes two structural forms, including an energy storage power supply housing 02 and a power pack housing 03, and the appearance of the two is roughly the same. The energy storage power supply housing and the power pack housing both include a left side plate 011, a right side plate 012 and a bottom side plate 013. The difference between the two is that the energy storage power supply housing 02 can carry fewer battery cells than the power pack housing 03. In the embodiment provided by the present invention, the energy storage power supply housing 02 is loaded with 11 battery cells, and the power pack housing 03 is loaded with 14 battery cells, but this is only an example and does not constitute a limitation on the technical solution to be protected by the present invention.

[0032] In order to save production costs, the present invention uses the same power supply housing injection mold 100 to produce the energy storage power supply housing 02 and the power pack housing 03. However, due to the different capacities of the two for loading battery cells, some adjustments need to be made during production.

[0033] When it is necessary to produce the energy storage power supply casing 02, the third insert 14 is installed in the first mounting hole 111, and the fourth insert 15 is installed in the second mounting hole 112. Since the third insert 14 and the left side wall of the upper mold body 11 enclose a second structural gap 102, and the fourth insert 15 and the right side wall of the upper mold body 11 enclose a second structural gap 102, plastic can flow into these two second structural gaps 102 to form a filling side panel 014, and plastic can flow into the first structural gap 101 to form a connecting rib plate 015. The connecting rib plate 015 is connected to the filling side panel 014, and the connecting rib plate 015 is connected to the left side panel 011 and the right side panel 012. The connecting rib plate 015 is equivalent to occupying a part of the inner cavity of the energy storage power supply casing 02, and the energy storage power supply casing 02 can only load 11 battery cells.

[0034] When it is necessary to produce the power pack shell 03, the first insert 12 is installed in the first mounting hole 111, and the second insert 13 is installed in the second mounting hole 112. Since the first insert 12 is tightly attached to the left side wall of the upper mold body 11, there is no gap between the two, and plastic cannot flow in. Since the second insert 13 is tightly attached to the right side wall of the upper mold body 11, there is no gap between the two, and plastic cannot flow in. Therefore, the side surface of the left side plate 011 formed is smooth, and the side surface of the right side plate 012 formed is also smooth. The power pack shell 03 can carry more battery cells and can carry 14 battery cells.

[0035] In this way, the present invention is used to produce the power pack housing 03 through the combination of the first insert 12, the second insert 13 and the upper mold body 11, and is used to produce the energy storage power supply housing 02 through the combination of the third insert 14, the fourth insert 15 and the upper mold body 11. The first insert 12 and the third insert 14 are installed in the first mounting hole 111, and the second insert 13 and the fourth insert 15 are installed in the second mounting hole 112. The same upper mold 10 and lower mold 20 can be used for injection molding production. When switching production, only the corresponding inserts need to be replaced, and there is no need to set up two different molds to produce the energy storage power supply housing 02 and the power pack housing 03 respectively, which reduces production costs and helps to improve production flexibility.

[0036] The steps performed when the power supply housing injection mold 100 provided by the present invention is used for injection molding production are defined as a power supply housing injection molding method, which is used to produce an energy storage power supply housing 02 or a power pack housing 03, and specifically includes the following steps: (1) selecting a first assembly mode or a second assembly mode according to the structural form of the power supply housing to be produced. Specifically, when the energy storage power supply housing 02 is to be produced, the first assembly mode is selected, and when the power pack housing 03 is to be produced, the second assembly mode is selected. In the first assembly mode, the upper mold is used to form a mold. The upper mold body 11, the third insert 14 and the fourth insert 15, the third insert 14 is installed in the first mounting hole 111, and the fourth insert 15 is installed in the second mounting hole 112. In the second assembly mode, the upper mold body 11, the first insert 12 and the second insert 13 are used, the first insert 12 is installed in the first mounting hole 111, and the second insert 13 is installed in the second mounting hole 112; (2) the upper mold 10 and the lower mold 20 are closed and locked, and the plastic is injected into the cavity; (3) the mold is opened after maintaining pressure, and the ejection mechanism on the lower mold 20 is used to eject the injection molded product.

[0037] Preferably, the first mounting hole 111 and the second mounting hole 112 are square holes, but not limited thereto. The filling side plate 014 and the connecting rib plate 015 both surround a plurality of through-hole structures, and the through-holes are used for the third insert 14 and the fourth insert 15 to be inserted.

[0038] like Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, the left side wall of the upper mold body 11 is provided with a left accommodating groove 113, which is communicated with the first mounting hole 111, and the first insert 12 and the third insert 14 inserted into the first mounting hole 111 are also placed in the left accommodating groove 113. The right side wall of the upper mold body 11 is provided with a right accommodating groove 114, which is communicated with the second mounting hole 112, and the second insert 13 and the fourth insert 15 inserted into the second mounting hole 112 are also placed in the right accommodating groove 114.

[0039] like Figures 1 to 10 As shown, the upper end portion of the left side of the upper mold body 11 extends to the left to form a left extension portion 115, and the upper end portion of the right side of the upper mold body 11 extends to the right to form a right extension portion 116. The four corners of the lower end of the upper mold body 11 are formed with plug-in positioning blocks 117 separated from the upper mold body 11. The left extension portion 115, the right extension portion 116 and the plug-in positioning block 117 are provided to facilitate docking and positioning with the lower mold 20.

[0040] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9As shown, the lower mold 20 includes a lower mold body 21 and lower side plates 22 extending upward on the left and right sides of the lower mold body 21. The left and right sides of the top of the lower mold body 21 are respectively provided with structural grooves 211 along the front-back direction. The structural grooves 211 are provided for plastic to flow in, and the left side plate 011 passes downward through the bottom side plate 013, and the right side plate 012 passes downward through the bottom side plate 013.

[0041] like Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the first insert 12 and the third insert 14 are detachably provided with a first mounting hole 111 to facilitate the disassembly and assembly of the first insert 12 and the third insert 14 , and the second insert 13 and the fourth insert 15 are detachably provided with a second mounting hole 112 to facilitate the disassembly and assembly of the second insert 13 and the fourth insert 15 .

[0042] In order to facilitate ejection of the product after injection molding, an ejection mechanism (not shown) is also installed on the lower mold 20.

[0043] Figure 1 , Figure 2 , Figure 6 and Figure 7 In the figure, the direction indicated by arrow X is from left to right, the direction indicated by arrow Y is from back to front, and the direction indicated by arrow Z is from top to bottom.

[0044] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A power supply housing injection mold, suitable for injection molding a power supply housing, wherein the energy storage power supply comprises a left side plate, a right side plate and a bottom side plate respectively connected to the left side plate and the right side plate, characterized in that: The present invention comprises an upper mold and a lower mold, wherein a mold cavity is formed when the upper mold and the lower mold are fitted together, wherein the upper mold comprises an upper mold body, a first insert, a second insert, a third insert and a fourth insert, wherein the left and right sides of the upper mold body are respectively provided with a first mounting hole penetrating in the up-down direction and a second mounting hole penetrating in the up-down direction, wherein the first insert or the third insert is inserted into the first mounting hole and is placed outside the left side wall of the upper mold body, wherein the second insert or the fourth insert is inserted into the second mounting hole and is placed outside the right side wall of the upper mold body, wherein the third insert and the fourth insert are respectively provided with a plurality of first structural gaps, wherein the first structural gaps are provided in the first structure. The gap extends in the up-down direction, and multiple first structural gaps are arranged at intervals in the front-to-back direction. A second structural gap is enclosed between the third insert installed in the first mounting hole and the left side wall of the upper mold body, and a second structural gap is also enclosed between the fourth insert installed in the second mounting hole and the right side wall of the upper mold body. The second structural gap is connected to the first structural gap. The first insert and the second insert are both complete continuous structures. The first insert installed in the first mounting hole is close to the left side wall of the upper mold body, and the second insert installed in the second mounting hole is close to the right side wall of the upper mold body.

2. The power supply housing injection mold according to claim 1, characterized in that: A left accommodating groove is formed on the left side wall of the upper mold body, and the left accommodating groove is communicated with the first mounting hole.

3. The power supply housing injection mold according to claim 1, characterized in that: A right side accommodating groove is formed on the right side wall of the upper mold body, and the right side accommodating groove is communicated with the second mounting hole.

4. The power supply housing injection mold according to claim 1, characterized in that: The upper end portion of the left side of the upper mold body extends toward the left side to form a left side extension portion, and the upper end portion of the right side of the upper mold body extends toward the right side to form a right side extension portion.

5. The power supply housing injection mold according to claim 1, characterized in that: The four peripheral corners of the lower end of the upper mold body are all formed with insertion positioning blocks separated from the upper mold body.

6. The power supply housing injection mold according to claim 1, characterized in that: The lower mold comprises a lower mold body and a lower side plate connected to the left and right sides of the lower mold body and extending upward.

7. The power supply housing injection mold according to claim 6, characterized in that: The left and right sides of the top of the lower mold body are respectively provided with structural grooves extending in the front-to-back direction.

8. The power supply housing injection mold according to claim 1, characterized in that: The first insert and the third insert are detachably mounted on the first mounting hole, and the second insert and the fourth insert are detachably mounted on the second mounting hole.

9. The power supply housing injection mold according to claim 1, characterized in that: The lower die is also provided with an ejection mechanism.

10. A method for injection molding a power supply housing, characterized in that: The method comprises the following steps: (1) selecting a first assembly mode or a second assembly mode according to the structural form of the power supply housing to be produced. In the first assembly mode, an upper mold body, a third insert and a fourth insert are used, the third insert is installed in the first mounting hole, and the fourth insert is installed in the second mounting hole. In the second assembly mode, an upper mold body, a first insert and a second insert are used, the first insert is installed in the first mounting hole, and the second insert is installed in the second mounting hole; (2) the upper mold and the lower mold are closed and locked, and plastic is injected into the mold cavity; (3) the mold is opened after maintaining pressure, and the injection molded product is ejected by the ejection mechanism on the lower mold.

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