Injection mold for double-layer storage box

Abstract

The utility model relates to the field of injection mold design, and discloses an injection mold of a double-layer storage box, which comprises a first casting mold frame, a second casting mold frame and a lower mold seat, a mold cover is arranged above the first casting mold frame, the second casting mold frame is arranged right below the first casting mold frame, the lower mold seat is arranged right below the second casting mold frame, and a mold cover is arranged above the lower mold seat. A first casting mold device is formed between the first casting mold frame and the second casting mold frame, an embedded layered shell of the double-layer storage box can be formed in the first casting mold device in a die-casting mode, a second casting mold device is formed between the second casting mold frame and the lower mold base, and an external supporting box body of the double-layer storage box can be formed in the second casting mold device in a die-casting mode. The embedded layered shell is placed in the external supporting box body, and then the double-layer storage box with the suspended bottom can be formed. According to the utility model, the two groups of casting mould devices which work independently are arranged, so that the molding treatment of the embedded layered shell and the external supporting box body can be realized.

Description

Technical Field

[0001] This utility model relates to the field of injection mold design technology, and more specifically, to an injection mold for a double-layer storage box. Background Technology

[0002] Existing molds for storage boxes are relatively simple, typically allowing only one type of box structure to be formed in a single casting operation. This results in low production efficiency and inefficient use of internal space, making it difficult to achieve independent, layered storage of items and affecting the usability of the storage boxes. If layering is required, separate molds are needed to produce other sizes of compartments, and these separately produced compartments may have assembly difficulties with the storage box itself. Therefore, this paper proposes an injection mold for a double-layer storage box. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address at least one of the aforementioned problems, this utility model first provides an injection mold for a double-layer storage box, which can complete the molding process of the outer support box and the inner layered shell of the storage box in one step, resulting in a double-layer storage box structure that meets the requirements for layered use.

[0005] (II) Technical Solution

[0006] To solve the aforementioned technical problem, this utility model provides an injection mold for a double-layer storage box, including a first mold frame, a second mold frame, and a lower mold base. A mold cover is provided on the top of the first mold frame, the second mold frame is located directly below the first mold frame, and the lower mold base is located directly below the second mold frame. A first mold device is formed between the first mold frame and the second mold frame. An embedded layered shell of the double-layer storage box can be die-cast in the first mold device. A second mold device is formed between the second mold frame and the lower mold base. An external support box of the double-layer storage box can be die-cast in the second mold device. By placing the embedded layered shell in the external support box, a double-layer storage box with a suspended bottom can be formed.

[0007] Furthermore, a first fixed mold frame is provided in the center of the inner cavity of the first mold frame, and a first fixed mold core is provided at the bottom edge of the first fixed mold frame.

[0008] Furthermore, a first demolding frame is provided in the inner cavity of the mold cover corresponding to the first fixed mold frame, and multiple sets of telescopic frames are evenly arranged in the first demolding frame, and each telescopic frame output end is provided with a first ejector rod.

[0009] Furthermore, a second moving mold core is provided at the bottom center of the second mold frame panel, and a number of guide channels are provided on the surface of the second moving mold core. The second moving mold core is fixedly connected to the second mold frame through multiple sets of fixing pins. A first moving mold core is provided on the second mold frame panel corresponding to the second moving mold core. The first moving mold core is embedded in the first fixed mold core in the mold closing state.

[0010] Furthermore, the lower mold base cavity is provided with a second fixed mold frame, and the second fixed mold frame is provided with a second fixed mold core.

[0011] Furthermore, a first support leg and a second support leg are provided on both sides below the lower mold base, and a mounting base is provided at the bottom of the first support leg and the second support leg.

[0012] Furthermore, the mounting base is provided with a bottom pin plate, and the bottom pin plate is provided with a top pin plate. A set of support rods is provided at each of the four corners of the bottom pin plate, passing through the top pin plate and entering the lower mold base. The inner side of the mounting base is provided with several sets of built-in brackets that abut against the lower mold base. The outer side of the built-in brackets is provided with several external brackets that abut against the lower mold base. The bottom pin plate is evenly provided with several second ejector rods that pass through the top pin plate and enter the lower mold base.

[0013] Furthermore, the rear end of the mold cover is provided with a material inlet seat, the center of the material inlet seat is provided with a first injection port, the bottom of the first injection port is provided with a first guide pipe, the first guide pipe is a spiral pipe, and the first guide pipe is connected to the first mold cavity; a plurality of sets of second injection ports are evenly provided at the outer end of the first injection port, the bottom of each of the second injection ports is provided with a second guide pipe, the second guide pipe is a long strip pipe, and the second guide pipe is connected to the second mold cavity.

[0014] (III) Beneficial Effects

[0015] This utility model provides an injection mold for a double-layer storage box, which is equipped with an independently operating first mold device and a second mold device. These devices can respectively mold the inner layered shell and the outer support box. The top of the inner layered shell can be perfectly engaged with the outer support box. The cavity of the inner layered shell is designated as the upper storage space, and the cavity between the inner layered shell and the outer support box is designated as the lower storage space, enabling double-layer storage of the storage box. This design includes two sets of moving mold cores at the upper and lower ends of the second mold frame. The upper moving mold core, in conjunction with the first fixed mold core, forms the first mold cavity for molding the inner layered shell, while the lower moving mold core, in conjunction with the second fixed mold core, forms the second mold cavity for molding the outer support box. This allows for simultaneous molding of the double-layer storage box, effectively improving production efficiency. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of the injection mold according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the disassembly structure of the injection mold according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the mold base of the injection mold according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of region A of the injection mold according to an embodiment of the present invention;

[0020] Figure 5 This is a front sectional view of the first mold frame of the injection mold according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1 is the mold cover, 11 is the material inlet seat, 12 is the first injection port, 13 is the second injection port, 14 is the first guide tube, 15 is the second guide tube, 2 is the first casting mold frame, 21 is the first movable cavity, 22 is the first movable sleeve, 23 is the first fixed mold frame, 24 is the first fixed mold core, 25 is the first demolding frame, 26 is the telescopic frame, 27 is the first ejector rod, 3 is the second casting mold frame, 31 is the second movable cavity, 32 is the support frame, 33 is the second movable sleeve, 34 is the second moving mold core, 35 is the guide channel, 4 is the lower mold base, 41 is the second fixed mold frame, 42 is the second fixed mold core, 5 is the first support leg, 6 is the second support leg, 7 is the mounting base, 71 is the bottom pin plate, 72 is the surface pin plate, 73 is the support rod, 74 is the external bracket, 75 is the internal bracket, and 76 is the second ejector rod. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] See Figures 1 to 5This utility model provides an injection mold for a double-layer storage box, including a first mold frame 2, a second mold frame 3, and a lower mold base 4. A mold cover 1 is provided above the first mold frame 2, the second mold frame 3 is located directly below the first mold frame 2, and the lower mold base 4 is located directly below the second mold frame 3. A first mold device is formed between the first mold frame 2 and the second mold frame 3. The inner layered shell of the double-layer storage box can be die-cast in the first mold device. A second mold device is formed between the second mold frame 3 and the lower mold base 4. The outer support box of the double-layer storage box can be die-cast in the second mold device. The inner layered shell is placed in the outer support box to form a double-layer storage box with a suspended bottom. The second mold device is used to complete the casting of the outer support box, and the first mold device is used to complete the casting of the inner layered shell. The slot of the inner layered shell is engaged with the snap-fit ​​edge on the top of the outer support box. The space between the inner layered shell and the outer support box is the storage interlayer.

[0025] The mold cover 1 is fixed to the first mold frame 2 by connecting pins. The mold cover 1 provides the first mold frame 2 with demolding and feeding components. The first mold frame 2 has first movable cavities 21 at its four corners, which facilitates the connection between the first mold frame 2 and the second mold frame 3. The bottom of the support frame 32 is set in the lower mold base 4, and it passes through the second mold frame 3 and enters the first mold frame 2. During the casting and mold closing, the first movable sleeve 22 is placed in the first movable cavity 21 and sleeved on the top of the support frame 32, and the second movable sleeve 33 is placed in the second movable cavity 31. During the mold opening, the first mold device is opened first to take out the external support box, then the first mold device is closed, and then the second mold device is opened to take out the embedded layered shell. The molding operation of the two sets of box structures can be completed at one time.

[0026] See Figure 2 and Figure 5 The first mold frame 2 has a first fixed mold frame 23 in the center of its inner cavity, and a first fixed mold core 24 is provided at the bottom edge of the first fixed mold frame 23. The first fixed mold frame 23 and the first fixed mold core 24 are fixed in the center of the inner cavity of the first mold frame 2 by multiple sets of fasteners. The top of the first fixed mold frame 23 is provided with an ejection through hole and a shell casting panel, which facilitates ejection after the embedded layered shell is formed. The first fixed mold core 24 cooperates with the first moving mold core to form a first casting cavity. After the raw material is introduced into the first casting cavity and solidifies, an embedded layered shell is formed.

[0027] A first demolding frame 25 is provided in the inner cavity of the mold cover 1 corresponding to the first fixed mold frame 23. Multiple sets of telescopic frames 26 are evenly arranged in the first demolding frame 25. Each telescopic frame 26 has a first ejector rod 27 at its output end. The first demolding frame 25 is located in the center of the inner cavity of the mold cover 1, which limits the setting of each set of telescopic frames 26. After the molding process of the embedded layered shell is completed, the first casting device is opened, the first moving mold core is withdrawn from the first fixed mold core 24, and the telescopic frame 26 extends with the first ejector rod 27 to push the embedded layered shell out from the first casting frame 2.

[0028] See Figure 2 The second mold frame 3 has a second moving mold core 34 at the bottom center of the panel. The second moving mold core 34 has several guide channels 35 on its face. The second moving mold core 34 is fixedly connected to the second mold frame 3 by multiple sets of fixing pins. The second moving mold core is located on the panel of the second mold frame 3 at the position corresponding to the second moving mold core 34. The first moving mold core is embedded in the first fixed mold core 24 when the mold is closed. There is a first gap between the inner cavity of the first moving mold core and the first fixed mold core 24. The first gap is the first casting cavity, which can receive the raw material in the first guide tube 14. The second moving mold core 34 is fixed at the bottom of the panel of the second mold frame 3 by fixing pins. The second guide tube 15 guides the raw material to the top of the second moving mold core 34 and guides it to the second casting cavity by the guide channels 35. The guide channels 35 can effectively extend the flow path of the raw material and help to achieve the cooling treatment of the raw material.

[0029] The lower mold base 4 has a second fixed mold frame 41 in its inner cavity, and a second fixed mold core 42 is provided on the second fixed mold frame 41. The lower mold base 4 fixes the second fixed mold core 42 by the second fixed mold frame 41. There is a second gap between the second fixed mold core 42 and the second moving mold core 34. The second gap is the second casting cavity, which can receive the raw material in the guide channel 35. After the raw material is introduced into the second casting cavity and solidifies, it forms an external support box.

[0030] The lower mold base 4 is provided with a first support leg 5 and a second support leg 6 on both sides below. The first support leg 5 and the second support leg 6 are provided with a mounting base 7 at their bottom. The mounting base 7 serves as the mounting component of the mold structure. It works with the first support leg 5 and the second support leg 6 to establish a support setting for the lower mold base 4, making the mold structure a complete and stable molding device.

[0031] See Figure 3The mounting base 7 has a bottom pin plate 71, and a top pin plate 72 on the bottom pin plate 71. A set of support rods 73 are located at each of the four corners of the bottom pin plate 71, passing through the top pin plate 72 and connecting to the lower mold base 4. Several sets of built-in brackets 75 are located inside the mounting base 7, abutting against the lower mold base 4. Several external brackets 74 are located outside the built-in brackets 75, abutting against the lower mold base 4. Several second ejector rods 76 are evenly distributed on the bottom pin plate 71, passing through the top pin plate 72 and entering the lower mold base 4. The mounting base 7 restricts the installation of the bottom pin plate 71, and a top pin plate is built above the bottom pin plate 71. With the bottom pin plate 71 fixed at the four corners to support the installation of the support rod 73, the top of the support rod 73 is connected to the lower mold base 4 to achieve the first layer of fixed support for the lower mold base 4 by the mounting base 7. The mounting base 7 limits the installation of each set of internal brackets 75 and external brackets 74, and extends the internal brackets 75 and external brackets 74 to abut against the lower mold base 4 to ensure the firmness of the support for the lower mold base 4. The bottom pin plate 71 can be pushed upward by the second ejector rod 76 to push the external support box in the second mold cavity out from the second fixed mold core 42.

[0032] See Figure 4 and Figure 5 The mold cover 1 has a material inlet seat 11 at its rear end. The setting of the material inlet seat 11 and its material guide pipe does not conflict with the setting of the first demolding frame 25. It can independently complete the material guiding process for the two sets of casting cavities. The material inlet seat 11 has a first injection port 12 in the center. The bottom of the first injection port 12 has a first guide pipe 14. The first guide pipe 14 is a spiral pipe. The first guide pipe 14 is connected to the first casting cavity. The first injection port 12 provides raw material supply to the first casting cavity. The raw material required by the first casting cavity is less than that required by the second casting cavity. The independent first injection port 12 with a larger specification supplies material to the first guide pipe 14. The spiral pipe structure can effectively extend the guide length of the first guide pipe 14. The material path allows for pre-cooling of the raw material during the material guiding process, which can shorten the molding time of the embedded layered shell. Several sets of second injection ports 13 are evenly provided at the outer end of the first injection port 12. The bottom of the second injection port 13 is provided with a second guide pipe 15. The second guide pipe 15 is a long strip pipe that connects to the second mold cavity. Multiple sets of second injection ports 13 provide raw materials to multiple sets of second guide pipes 15. Multiple sets of second guide pipes 15 simultaneously convey the raw material to the guide channel 35. The guide channel 35, in conjunction with the second guide pipes 15, can effectively extend the material conveying path. After pre-cooling by the guide channel 35, the material flows into the second mold cavity, which can shorten the molding time of the external support box.

[0033] The present invention provides an injection mold for a double-layer storage box, which is equipped with two sets of mold frames with matching specifications. The mold frame and the lower mold base 4 are used to assemble the two sets of mold cavities. The independently set first guide pipe 14 can convey the raw material into the first mold cavity to form the inner layered shell. The first mold cavity can form a groove on the edge of the frame of the inner layered shell. The second guide pipe 15 can convey the raw material into the second mold cavity to form the outer support box. The first mold cavity can form a snap-fit ​​edge on the edge of the outer support box to fit the snap-fit ​​groove. The inner layered shell can embed the bottom of the shell into the outer support box and place the snap-fit ​​groove on the snap-fit ​​edge to assemble the outer support box and the inner layered shell, forming a double-layer storage box for use.

[0034] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. An injection mold for a double-layer storage box, characterized in that, The device includes a first mold frame (2), a second mold frame (3), and a lower mold base (4). A mold cover (1) is provided above the first mold frame (2). The second mold frame (3) is located directly below the first mold frame (2). The lower mold base (4) is located directly below the second mold frame (3). A first mold device is formed between the first mold frame (2) and the second mold frame (3). The first mold device can be used to die-cast the inner layered shell of the double-layer storage box. A second mold device is formed between the second mold frame (3) and the lower mold base (4). The second mold device can be used to die-cast the outer support box of the double-layer storage box. By placing the inner layered shell in the outer support box, a double-layer storage box with a suspended bottom can be formed.

2. The injection mold for a double-layer storage box according to claim 1, characterized in that, The first mold frame (2) has a first fixed mold frame (23) in the center of its inner cavity, and a first fixed mold core (24) is provided at the bottom edge of the first fixed mold frame (23).

3. The injection mold for a double-layer storage box according to claim 2, characterized in that, The inner cavity of the mold cover (1) is provided with a first demolding frame (25) corresponding to the first fixed mold frame (23). Multiple sets of telescopic frames (26) are evenly arranged inside the first demolding frame (25). The output end of each telescopic frame (26) is provided with a first ejector rod (27).

4. The injection mold for a double-layer storage box according to claim 2, characterized in that, The second mold frame (3) has a second moving mold core (34) at the bottom center of the panel. The second moving mold core (34) has several guide channels (35) on its surface. The second moving mold core (34) is fixedly connected to the second mold frame (3) by multiple sets of fixing pins. The second mold frame (3) has a first moving mold core at the position corresponding to the second moving mold core (34) on the panel. The first moving mold core is embedded in the first fixed mold core (24) in the mold closing state.

5. The injection mold for a double-layer storage box according to claim 1, characterized in that, The lower mold base (4) has a second fixed mold frame (41) in its inner cavity, and a second fixed mold core (42) is provided on the second fixed mold frame (41).

6. The injection mold for a double-layer storage box according to claim 1, characterized in that, The lower mold base (4) is provided with a first support leg (5) and a second support leg (6) on both sides below, and the first support leg (5) and the second support leg (6) are provided with a mounting base (7) at the bottom.

7. The injection mold for a double-layer storage box according to claim 6, characterized in that, The mounting base (7) is provided with a bottom pin plate (71), and the bottom pin plate (71) is provided with a face pin plate (72). The bottom pin plate (71) has a set of support rods (73) at each of its four corners, which pass through the face pin plate (72) and enter the lower mold base (4). The mounting base (7) has a number of built-in brackets (75) on its inner side that abut against the lower mold base (4). The built-in brackets (75) have a number of external brackets (74) on their outer sides that abut against the lower mold base (4). The bottom pin plate (71) is provided with a number of second ejector rods (76) that pass through the face pin plate (72) and enter the lower mold base (4).

8. The injection mold for a double-layer storage box according to claim 1, characterized in that, The mold cover (1) has a material inlet seat (11) at the rear end. The material inlet seat (11) has a first injection port (12) in the center. The bottom of the first injection port (12) has a first guide tube (14). The first guide tube (14) is a spiral pipe and is connected to the first mold cavity. The outer end of the first injection port (12) is evenly provided with several sets of second injection ports (13). The bottom of each second injection port (13) is provided with a second guide tube (15). The second guide tube (15) is a long strip pipe and is connected to the second mold cavity.

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