Mould for metal insert of plastic tray of power battery

Abstract

The utility model provides a metal insert mold for a plastic tray of a power battery, and belongs to the technical field of molds. The insert nut forming mold comprises an upper mold plate and a lower mold plate, a pouring hole is formed in the upper mold plate, two rows of insert nut forming cavities which are symmetrically arranged along the center line of the pouring hole are formed between the upper mold plate and the lower mold plate, each row of insert nut forming cavities comprises a plurality of insert nut forming cavities which are distributed in a straight line, and the insert nut forming cavities are formed in the lower mold plate. The section of the insert nut forming cavity is rectangular, and a center hole forming structure corresponding to the insert nut forming cavity is arranged between the upper die plate and the lower die plate. According to the mold, molten metal can be injected into the insert nut forming cavity between the upper mold plate and the lower mold plate through the pouring hole to form the metal insert nut in a casting mode, the center hole forming structure can directly form a center hole in the metal insert nut when the metal insert nut is cast, drilling machining does not need to be conducted in the later period, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a metal insert mold for a power battery plastic tray. Background Technology

[0002] Metal nut inserts used in power battery plastic trays are generally formed by mold casting. After casting, a central hole is drilled in the center of the metal nut insert using drilling equipment, which results in low production efficiency.

[0003] For example, a Chinese patent discloses a metal insert mold [application number: 202322779072.8], including a mold body comprising a front mold and a rear mold, the front mold and the rear mold being detachably connected; an insert comprising a first insert and a second insert, the first insert and the second insert being detachably connected, a groove being formed between the first insert and the second insert, the connecting part of an embedded copper part being detachably disposed in the groove; an injection groove being provided in the front mold, the insert and the embedded copper part being fixedly disposed in the injection groove, the embedded copper part being suitable for injection molding in the injection groove; a slot corresponding to the insert being opened in the rear mold, the top of the insert being suitable for insertion into the slot. By setting the insert in the front mold, the embedded copper part being detachably connected to the first insert and the second insert, and placed in the injection groove of the front mold, after closing the front mold and the rear mold, injection molding is performed, so that the embedded copper part and the main structure are injection molded into an integral structure. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a metal insert mold for a power battery plastic tray.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A metal insert mold for a power battery plastic tray includes an upper mold plate and a lower mold plate. The upper mold plate is provided with a sprue hole. Between the upper mold plate and the lower mold plate, there are two rows of insert nut forming cavities symmetrically arranged along the center line of the sprue hole. Each row of insert nut forming cavities includes several insert nut forming cavities distributed in a straight line. The cross-section of the insert nut forming cavity is rectangular. Between the upper mold plate and the lower mold plate, there is a center hole forming structure corresponding to the insert nut forming cavity.

[0007] In the aforementioned power battery plastic tray metal insert mold, the central hole forming structure includes a forming rod movably disposed on the lower template. The forming rod extends vertically from the bottom of the lower template to the top of the lower template. The forming rod is disposed at the center of the insert nut forming cavity. The top of the forming rod protrudes and is provided with a central hole forming part that is inserted into the insert nut forming cavity. The bottom of the lower template is also provided with a forming rod fixing structure.

[0008] In the aforementioned power battery plastic tray metal insert mold, the top of the forming rod protrudes from the bottom surface of the insert nut forming cavity, and the bottom of the upper template is also provided with a countersunk hole forming part corresponding to the insert nut forming cavity, and the top of the center hole forming part abuts against the bottom of the countersunk hole forming part.

[0009] In the aforementioned power battery plastic tray metal insert mold, the cross-sections of the forming rod, the central hole forming part, and the countersunk hole forming part are all circular.

[0010] In the aforementioned power battery plastic tray metal insert mold, the outer diameter of the forming rod and the outer diameter of the countersunk hole forming part are equal, and the outer diameter of the center hole forming part is smaller than the outer diameter of the forming rod.

[0011] In the aforementioned power battery plastic tray metal insert mold, the lower template is provided with a forming rod mounting groove for inserting a forming rod. The inner diameter of the upper part of the forming rod mounting groove is equal to the outer diameter of the forming rod, and the inner diameter of the lower part of the forming rod mounting groove is greater than the outer diameter of the forming rod. The bottom of the lower template is also provided with a limiting groove connected to the forming rod mounting groove. The inner diameter of the limiting groove is greater than the inner diameter of the lower part of the forming rod mounting groove. The bottom of the forming rod is also provided with a limiting part. The outer diameter of the limiting part is greater than the inner diameter of the forming rod, and under the action of the forming rod fixing structure, the top of the limiting part abuts against the inner end face of the limiting groove.

[0012] In the aforementioned power battery plastic tray metal insert mold, the forming rod fixing structure includes a lower limiting plate embedded in the bottom of the lower template. The top of the lower limiting plate abuts against the limiting part at the bottom of the forming rod. The lower limiting plate is detachably fixed to the lower template by several bolts.

[0013] In the aforementioned power battery plastic tray metal insert mold, a gating channel connected to the gating hole is provided between the two rows of insert nut forming cavities, and connecting channels connecting the insert nut forming cavities are provided on both sides of the gating channel.

[0014] In the aforementioned power battery plastic tray metal insert mold, a top plate is also provided on the lower side of the lower template. The top plate is provided with several ejection structures corresponding to the insert nut forming cavity. The ejection structure includes two straight ejector rods fixed on the top plate. The straight ejector rods vertically penetrate the lower limit plate and the top of the lower template and are connected to the bottom of the insert nut forming cavity.

[0015] In the aforementioned power battery plastic tray metal insert mold, a number of excess material ejection rods are also fixedly connected to the top plate. The excess material ejection rods vertically penetrate the lower mold plate and are connected to the inlet flow channel.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. Molten metal can be injected into the insert nut forming cavity between the upper and lower templates through the sprue hole to form the metal insert nut. The center hole forming structure can directly form the center hole on the metal insert nut during casting, eliminating the need for subsequent drilling and effectively improving production efficiency.

[0018] 2. The forming rod, which is movably connected to the lower template, is fixed to the lower template through the forming rod fixing structure. The forming part at the top of the forming rod is inserted into the forming cavity of the insert nut. The center hole can be directly formed on the metal insert nut during the casting of the metal insert. The movable connection of the forming rod can be easily disassembled.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a structural diagram of the lower template;

[0023] Figure 4 This is a partial structural schematic diagram of the present invention;

[0024] Figure 5 yes Figure 2 Enlarged diagram of point A in the middle.

[0025] In the figure, the upper template is 1, the lower template is 2, the inlet hole is 3, the insert nut forming cavity is 4, the center hole forming structure is 5, the forming rod is 6, the center hole forming part is 7, the forming rod fixing structure is 8, the countersunk hole forming part is 9, the forming rod mounting groove is 10, the limiting groove is 11, the limiting part is 12, the lower limiting plate is 13, the inlet runner is 14, the connecting runner is 15, the top plate is 16, the straight ejector rod is 17, and the excess material ejector rod is 18. Detailed Implementation

[0026] like Figures 1-5 As shown, a metal insert mold for a power battery plastic tray includes an upper mold plate 1 and a lower mold plate 2. The upper mold plate 1 is provided with a sprue hole 3. Two rows of insert nut forming cavities 4 are symmetrically arranged along the center line of the sprue hole 3 between the upper mold plate 1 and the lower mold plate 2. Each row of insert nut forming cavities 4 includes several insert nut forming cavities 4 arranged in a straight line. The cross-section of the insert nut forming cavity 4 is rectangular. A center hole forming structure 5 corresponding to the insert nut forming cavity 4 is provided between the upper mold plate 1 and the lower mold plate 2.

[0027] In this invention, molten metal can be injected into the insert nut forming cavity between the upper and lower templates through the sprue hole to cast the metal insert nut. The center hole forming structure can directly form the center hole on the metal insert nut during casting, eliminating the need for subsequent drilling and effectively improving production efficiency.

[0028] Specifically, the center hole forming structure 5 includes a forming rod 6 movably mounted on the lower template 2. The forming rod 6 extends vertically from the bottom to the top of the lower template 2 and is positioned at the center of the insert nut forming cavity 4. A center hole forming part 7 protrudes from the top of the forming rod 6 and inserts into the insert nut forming cavity 4. The bottom of the lower template 2 also has a forming rod fixing structure 8. The forming rod, movably connected to the lower template, is fixed to the lower template by the forming rod fixing structure. The forming part at the top of the forming rod, inserted into the insert nut forming cavity, allows for direct forming of the center hole on the metal insert nut during casting. The movable connection of the forming rod facilitates disassembly.

[0029] Specifically, the top of the forming rod 6 protrudes from the bottom surface of the insert nut forming cavity 4, and the bottom of the upper template 1 is also provided with a countersunk hole forming part 9 corresponding to the insert nut forming cavity 4. The top of the center hole forming part 7 abuts against the bottom of the countersunk hole forming part 9. The top of the forming rod protruding from the bottom surface of the insert nut forming cavity can form a lower countersunk hole on the lower side of the metal insert nut, and the countersunk hole forming part on the upper template can form an upper countersunk hole on the upper side of the metal insert nut.

[0030] Specifically, the cross-sections of the forming rod 6, the central hole forming part 7, and the countersunk hole forming part 9 are all circular. The outer diameter of the forming rod 6 and the outer diameter of the countersunk hole forming part 9 are equal, and the outer diameter of the central hole forming part 7 is smaller than the outer diameter of the forming rod 6.

[0031] Specifically, the lower template 2 is provided with a forming rod mounting groove 10 for inserting the forming rod 6. The inner diameter of the upper part of the forming rod mounting groove 10 is equal to the outer diameter of the forming rod 6, and the inner diameter of the lower part of the forming rod mounting groove 10 is greater than the outer diameter of the forming rod 6. The bottom of the lower template 2 is also provided with a limiting groove 11 connected to the forming rod mounting groove 10. The inner diameter of the limiting groove 11 is greater than the inner diameter of the lower part of the forming rod mounting groove 10. The bottom of the forming rod 6 is also provided with a limiting part 12. The outer diameter of the limiting part 12 is greater than the inner diameter of the forming rod 6, and under the action of the forming rod fixing structure 8, the top end of the limiting part 12 abuts against the inner end face of the limiting groove 11. Setting the inner diameter of the upper part of the molding rod mounting groove 10 to be equal to the outer diameter of the molding rod 6 can ensure a sealing effect. The inner diameter of the lower part of the molding rod mounting groove 10 is greater than the outer diameter of the molding rod 6, which facilitates the insertion of the molding rod. The limiting part 12, in conjunction with the limiting groove, can limit the molding rod to the upper limit. The molding rod fixing structure can limit the molding rod to the lower limit, thereby achieving the fixing of the molding rod.

[0032] Specifically, the forming rod fixing structure 8 includes a lower limiting plate 13 embedded in the bottom of the lower template 2. The top of the lower limiting plate 13 abuts against the limiting part 12 at the bottom of the forming rod 6. The lower limiting plate 13 is detachably fixed to the lower template 2 by several bolts. The abutting between the top of the lower limiting plate 13 and the bottom of the limiting part can limit the forming rod downwards, and the detachable connection of the lower limiting plate by several bolts can facilitate the disassembly of the lower limiting plate.

[0033] Specifically, a gating channel 14 connected to the gating hole 3 is provided between the two rows of insert nut forming cavities 4, and connecting channels 15 connecting the insert nut forming cavities 4 are provided on both sides of the gating channel 14. Molten metal can be injected into multiple insert nut forming cavities through the gating channel and several connecting channels via a single gating hole.

[0034] Specifically, a top plate 16 is provided on the lower side of the lower template 2. The top plate 16 has several ejection structures corresponding to the insert nut forming cavity 4. Each ejection structure includes two straight ejector rods 17 fixed to the top plate 16. The straight ejector rods 17 vertically penetrate the lower limiting plate 13 and the top of the lower template 2, and are connected to the bottom of the insert nut forming cavity 4. After the metal insert nut is cast, the upward movement of the top plate can drive the straight ejector rods upward, thereby ejecting the metal insert nut from the insert nut forming cavity.

[0035] Specifically, a number of material ejection rods 18 are fixedly connected to the top plate 16. The material ejection rods 18 vertically penetrate the lower template 2 and are connected to the inlet channel 14. When the top plate moves upward, the material ejection rods can also eject the excess material in the inlet channel, eliminating the need for subsequent cleaning.

[0036] The working principle of this utility model is as follows: molten metal can be injected into the insert nut forming cavity between the upper and lower templates through the sprue hole to form a metal insert nut. The center hole forming structure can directly form a center hole on the metal insert nut during casting, eliminating the need for subsequent drilling and effectively improving production efficiency.

[0037] The forming rod, which is movably connected to the lower template, is fixed to the lower template by the forming rod fixing structure. The forming part at the top of the forming rod is inserted into the forming cavity of the insert nut, which can directly form a center hole on the metal insert nut during the casting of the metal insert nut. The movable connection of the forming rod can be easily disassembled. The top of the forming rod protrudes from the bottom surface of the insert nut forming cavity, which can form a countersunk hole on the lower side of the metal insert nut. The countersunk hole forming part on the upper template can form an upper countersunk hole on the upper side of the metal insert nut.

[0038] Setting the inner diameter of the upper part of the molding rod mounting groove 10 to be equal to the outer diameter of the molding rod 6 can ensure a sealing effect. The inner diameter of the lower part of the molding rod mounting groove 10 is greater than the outer diameter of the molding rod 6, which facilitates the insertion of the molding rod. The limiting part 12, in conjunction with the limiting groove, can limit the molding rod to the upper limit. The molding rod fixing structure can limit the molding rod to the lower limit, thereby achieving the fixing of the molding rod. The top of the lower limiting plate 13 and the bottom of the limiting part abut against each other to limit the molding rod to the lower limit. The lower limiting plate is detachably connected by several bolts, which facilitates the disassembly of the lower limiting plate.

[0039] Molten metal can be injected into multiple insert nut forming cavities through a single sprue via a gating channel and several connecting channels. After the metal insert nut is cast, the top plate moves upward, which drives the straight ejector rod to move upward, thereby ejecting the metal insert nut from the forming cavity. When the top plate moves upward, it can also eject the excess material in the gating channel through the excess material ejector rod, eliminating the need for subsequent cleaning.

[0040] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0041] Although this article frequently uses terms such as upper template 1, lower template 2, sprue hole 3, insert nut forming cavity 4, center hole forming structure 5, forming rod 6, center hole forming part 7, forming rod fixing structure 8, countersunk hole forming part 9, forming rod mounting groove 10, limiting groove 11, limiting part 12, lower limiting plate 13, sprue channel 14, connecting channel 15, top plate 16, straight ejector rod 17, and excess material ejector rod 18, these terms are used merely to more conveniently describe and explain the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A metal insert mold for a power battery plastic tray, comprising an upper template (1) and a lower template (2), characterized in that, The upper template (1) is provided with a sprue hole (3). There are two rows of insert nut forming cavities (4) symmetrically arranged along the center line of the sprue hole (3) between the upper template (1) and the lower template (2). Each row of insert nut forming cavities (4) includes several insert nut forming cavities (4) distributed in a straight line. The cross-section of the insert nut forming cavity (4) is rectangular. There is a center hole forming structure (5) corresponding to the insert nut forming cavity (4) between the upper template (1) and the lower template (2).

2. The power battery plastic tray metal insert mold according to claim 1, characterized in that, The central hole forming structure (5) includes a forming rod (6) movably set on the lower template (2). The forming rod (6) extends vertically from the bottom of the lower template (2) to the top of the lower template (2). The forming rod (6) is set at the center of the insert nut forming cavity (4). The top of the forming rod (6) protrudes and is provided with a central hole forming part (7) inserted into the insert nut forming cavity (4). The bottom of the lower template (2) is also provided with a forming rod fixing structure (8).

3. The power battery plastic tray metal insert mold according to claim 2, characterized in that, The top of the forming rod (6) protrudes from the bottom surface of the insert nut forming cavity (4), and the bottom of the upper template (1) is also provided with a countersunk hole forming part (9) corresponding to the insert nut forming cavity (4), and the top of the center hole forming part (7) abuts against the bottom of the countersunk hole forming part (9).

4. The power battery plastic tray metal insert mold according to claim 3, characterized in that, The cross-sections of the forming rod (6), the central hole forming part (7), and the countersunk hole forming part (9) are all circular.

5. The power battery plastic tray metal insert mold according to claim 4, characterized in that, The outer diameter of the forming rod (6) is equal to the outer diameter of the countersunk hole forming part (9), and the outer diameter of the center hole forming part (7) is smaller than the outer diameter of the forming rod (6).

6. The power battery plastic tray metal insert mold according to claim 2, characterized in that, The lower template (2) is provided with a forming rod mounting groove (10) for inserting the forming rod (6). The inner diameter of the upper part of the forming rod mounting groove (10) is equal to the outer diameter of the forming rod (6). The inner diameter of the lower part of the forming rod mounting groove (10) is greater than the outer diameter of the forming rod (6). The bottom of the lower template (2) is also provided with a limiting groove (11) connected to the forming rod mounting groove (10). The inner diameter of the limiting groove (11) is greater than the inner diameter of the lower part of the forming rod mounting groove (10). The bottom of the forming rod (6) is also provided with a limiting part (12). The outer diameter of the limiting part (12) is greater than the inner diameter of the forming rod (6). Under the action of the forming rod fixing structure (8), the top of the limiting part (12) and the inner end face of the limiting groove (11) abut against each other.

7. The power battery plastic tray metal insert mold according to claim 6, characterized in that, The forming rod fixing structure (8) includes a lower limiting plate (13) embedded in the bottom of the lower template (2). The top of the lower limiting plate (13) abuts against the limiting part (12) at the bottom of the forming rod (6). The lower limiting plate (13) is detachably fixed to the lower template (2) by several bolts.

8. The power battery plastic tray metal insert mold according to claim 7, characterized in that, A gating channel (14) connected to the gating hole (3) is provided between the two rows of insert nut forming cavities (4), and connecting channels (15) connecting the insert nut forming cavities (4) are provided on both sides of the gating channel (14).

9. The power battery plastic tray metal insert mold according to claim 8, characterized in that, The lower template (2) is also provided with a top plate (16) on its lower side. The top plate (16) is provided with several ejection structures corresponding to the insert nut forming cavity (4). The ejection structure includes two straight ejector rods (17) fixed on the top plate (16). The straight ejector rods (17) vertically penetrate the lower limiting plate (13) and the top of the lower template (2) and are connected to the bottom of the insert nut forming cavity (4).

10. The power battery plastic tray metal insert mold according to claim 9, characterized in that, Several material ejection rods (18) are also fixedly connected to the top plate (16). The material ejection rods (18) vertically penetrate the lower template (2) and are connected to the pouring channel (14).

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