Injection mold for a case body

Abstract

The utility model relates to an injection mold of storage box main part belongs to injection mold technical field. Including top plate, fixed mold plate, movable mold plate and bottom plate who arranges successively, the top of movable mold plate is equipped with the upward convex forming block, the both sides of forming block and the bottom of fixed mold plate enclose and form the closed forming cavity, the inside of forming cavity is equipped with the cooling forming casing, the top of forming block is equipped with a plurality of downward recessed notches, the top of notch all is equipped with semicircular forming groove, both ends of forming groove are connected with forming cavity, the edge wall of casing is equipped with the mounting groove who forms in the inside of notch, the inside of mounting groove is equipped with the crosswise link; in this scheme, because the top of forming block is equipped with the downward recessed notch and forming groove, the structure that the casing edge wall can form mounting groove, and the inside of mounting groove can form the link, the edge wall for inserting storage box in the inside of mounting groove, and through the crosswise link and the edge wall bottom hinged, make storage box can fold or disassemble.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and relates to an injection mold for the main body of a storage box. Background Technology

[0002] Storage boxes are items used for storage. Because they are made of plastic, they can be manufactured using injection molding. In the injection molding process, the plastic raw material is first heated to a molten state and then injected into the pre-set molding cavity inside the mold. After the cavity is filled, the mold is rapidly cooled, and the molten plastic material cools and solidifies, forming the desired storage box structure. Using injection molding to produce plastic products has advantages such as high precision and high efficiency.

[0003] However, the existing injection molds used to produce storage boxes still have some shortcomings. In order to make the storage boxes easy to store when not in use, a folding structure can be set on the storage boxes. Therefore, a connecting structure needs to be set at the bottom of the box. Thus, the molding cavity structure inside the injection mold needs to be improved so that the connecting structure for folding can be directly formed on the molded storage box, thereby improving production efficiency. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the current technology by proposing an injection mold for the main body of a storage box. The technical problem to be solved by this utility model is: how to improve the internal molding cavity structure of the injection mold.

[0005] The purpose of this utility model can be achieved through the following technical solution: An injection mold for the main body of a storage box includes a top plate, a fixed template, a movable template, and a bottom plate arranged in sequence. The top of the movable template is provided with an upwardly protruding molding block. The two sides of the molding block and the bottom of the fixed template enclose a sealed molding cavity. A shell that has been cooled and formed is provided inside the molding cavity. The top of the molding block is provided with several downwardly recessed slots. The top of each slot is provided with a semi-circular molding groove. The two ends of the molding groove are connected to the molding cavity. The side wall of the shell is provided with an installation groove formed inside the slot. A horizontally arranged connecting rod is provided inside the installation groove.

[0006] In this solution, molten plastic heated to a molten state is filled into the molding cavity, wrapping both sides of the molding block before cooling and molding. The molten plastic cools and forms a shell structure. Because the top of the molding block has a downward-recessed groove and a molding groove, an installation groove structure can be formed on the side wall of the molded shell. A connecting rod can be formed inside the installation groove. The installation groove is used to insert the side wall of the storage box and is hinged to the bottom of the side wall through a horizontal connecting rod, so that the storage box can be folded or disassembled. Through the above method, the internal structure of the molding cavity is improved, and the installation groove and connecting rod structure for folding can be directly formed on the top of the shell, improving production efficiency.

[0007] In the injection mold of the aforementioned storage box body, the sidewalls of the shell are composed of an inner shell and an outer shell, which are arranged enclosingly on both sides of the molded block. The sidewalls of the shell have a hollow structure composed of an inner shell and an outer shell, making the shell lighter.

[0008] In the injection mold of the aforementioned storage box body, the top of the molding block is provided with several longitudinally arranged strip grooves, which are horizontally arranged. Several integrally connected first reinforcing ribs are provided between the inner shell and the outer shell, and these first reinforcing ribs are formed by cooling within the strip grooves. During the process of filling the molding cavity with the plastic solution, the connected strip grooves are filled together, forming a first reinforcing rib structure inside the strip grooves. The two ends of the first reinforcing ribs connect the inner shell and the outer shell, thereby improving the structural strength of the shell's sidewalls.

[0009] In the injection mold of the aforementioned storage box body, a slidingly connected push plate is provided on the inner side of the base plate. The push plate is provided with several fixed ejector pins, which slide through the moving template and extend to the bottom of the molding cavity. During the demolding process of the shell, the push plate is pushed towards the side closer to the moving template. The push plate drives the ejector pins to extend from the bottom of the molding cavity together, ejecting the cooled and molded shell out of the mold.

[0010] In the injection mold of the aforementioned storage box body, the top of the moving mold plate is provided with a downwardly recessed grid groove, which is connected to the bottom of the molding cavity. The ejector pin is located at the bottom of the intersection of the grid grooves, and the bottom of the shell is provided with a grid-like second reinforcing rib. The top of the ejector pin abuts against the bottom of the second reinforcing rib. The plastic solution can fill into the grid groove, forming a second reinforcing rib at the bottom of the shell, thereby improving the structural strength of the shell base plate.

[0011] In the injection mold of the aforementioned storage box body, the top plate is provided with a feed inlet, and the top plate has a flow divider plate inside. The bottom of the feed inlet is connected to the flow divider plate, and the bottom of the flow divider plate is provided with a connected nozzle. The bottom of the nozzle passes through the fixed mold plate and is connected to the molding cavity. After the plastic raw material is heated to a molten state, it is injected from the feed inlet. After being divided by the flow divider plate, it flows evenly into the nozzle at the bottom and is injected into the molding cavity at the bottom through the nozzle.

[0012] In the injection mold of the aforementioned storage box body, several cooling channels are provided on the side walls of the fixed mold plate and the moving mold plate, respectively, on both sides of the molding cavity. After the molten plastic fills the molding cavity, coolant is injected into the cooling channels to rapidly cool the inside of the mold, allowing the molten plastic to cool and solidify quickly, thereby improving production efficiency.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In this solution, since the top of the molding block is provided with a downward recessed groove and a molding groove, the side wall of the molded shell can form a structure for forming an installation groove, and a connecting rod can be formed inside the installation groove. The inside of the installation groove is used to insert the side wall of the storage box, and is hinged to the bottom of the side wall through the horizontal connecting rod, so that the storage box can be folded or disassembled. Attached Figure Description

[0015] Figure 1 This is a frontal half-sectional view of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal opening structure of the moving template of this utility model;

[0017] Figure 3 This is a schematic diagram of the half-section structure of the shell of this utility model.

[0018] In the diagram, 1. Top plate; 1a. Feed inlet; 1b. Diverter plate; 1c. Nozzle; 2. Fixed template; 3. Moving template; 3a. Molding block; 3b. Groove; 3b1. Molding groove; 3c. Strip groove; 3d. Mesh groove; 4. Bottom plate; 4a. Push plate; 4b. Ejector pin; 5. Molding cavity; 6. Cooling channel; 7. Shell; 7a. Mounting groove; 7a1. Connecting rod; 7b. Inner shell; 7c. Outer shell; 8. First reinforcing rib; 9. Second reinforcing rib. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] Example

[0021] like Figure 1As shown, the injection mold for the main body of the storage box includes a top plate 1. A fixed template 2 is fixedly connected to the bottom of the top plate 1. A movable template 3 is slidably connected to the bottom of the fixed template 2. A bottom plate 4 is fixedly connected to the bottom of the movable template 3. A molding cavity 5 is provided between the fixed template 2 and the movable template 3. A feed inlet 1a is provided on the top plate 1. A flow divider 1b is provided inside the top plate 1. The bottom of the feed inlet 1a is connected to the flow divider 1b. A nozzle 1c is connected to the bottom of the flow divider 1b. The bottom of the nozzle 1c passes through the fixed template 2 and is connected to the molding cavity 5. Several cooling channels 6 are provided on the side walls of the fixed template 2 and the movable template 3. The cooling channels 6 are respectively on both sides of the molding cavity 5. A push plate 4a is slidably connected to the bottom plate 4. Several ejector pins 4b are fixedly connected to the push plate 4a. The ejector pins 4b slide through the movable template 3 and extend to the bottom of the molding cavity 5.

[0022] like Figure 2 As shown, the top of the moving template 3 is provided with an upwardly protruding forming block 3a. The two sides of the forming block 3a and the bottom of the fixed template 2 enclose a sealed forming cavity 5. The top of the forming block 3a is provided with several downwardly recessed slots 3b. The top of each slot 3b is provided with a semi-circular forming groove 3b1. The two ends of the forming groove 3b1 are connected to the forming cavity 5. The top of the forming block 3a is provided with several longitudinally arranged strip grooves 3c. The strip grooves 3c are arranged horizontally. The top of the moving template 3 is provided with a downwardly recessed grid groove 3d. The grid groove 3d is connected to the bottom of the forming cavity 5. The ejector pin 4b is located at the bottom of the intersection of the grid grooves 3d.

[0023] like Figure 3 As shown, the molding cavity 5 is provided with a cooled and formed shell 7. The side wall of the shell 7 is provided with an installation groove 7a formed inside the slot 3b. The installation groove 7a is provided with a horizontally arranged connecting rod 7a1. The side wall of the shell 7 is composed of an inner shell 7b and an outer shell 7c. Several integrally connected first reinforcing ribs 8 are provided between the inner shell 7b and the outer shell 7c. The first reinforcing ribs 8 are cooled and formed inside the strip groove 3c. The bottom of the shell 7 is provided with a grid-like second reinforcing rib 9. The second reinforcing rib 9 is cooled and formed inside the grid groove 3d.

[0024] The working principle of this solution is as follows: Figure 1-3As shown, after the plastic raw material is heated to a molten state, it is injected into the inlet 1a. After being diverted by the flow divider 1b, it flows evenly into the nozzle 1c at the bottom and is injected into the molding cavity 5 at the bottom through the nozzle 1c. After the plastic solution fills the molding cavity 5 and the connected strip groove 3c and grid groove 3d, the inside of the mold is rapidly cooled to form the shell structure 7. Then, the moving platen 3 is moved to open the mold, and the push plate 4a is pushed to the side closer to the moving platen 3. The push plate 4a drives the ejector pin 4b to extend from the bottom of the molding cavity 5, ejecting the cooled and formed shell 7 and demolding it. The side wall of the formed shell 7 can form a structure of mounting groove 7a, and the mounting groove 7a can form a connecting rod 7a1 inside. The mounting groove 7a is used to insert the side wall of the storage box, and is hinged to the bottom of the side wall through the horizontal connecting rod 7a1, so that the storage box can be folded or disassembled.

[0025] 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.

[0026] Although this document frequently uses terms such as 1. top plate; 1a. feed inlet; 1b. flow divider; 1c. nozzle; 2. fixed template; 3. moving template; 3a. forming block; 3b. slot; 3b1. forming groove; 3c. strip groove; 3d. mesh groove; 4. bottom plate; 4a. push plate; 4b. ejector pin; 5. forming cavity; 6. cooling channel; 7. shell; 7a. mounting groove; 7a1. connecting rod; 7b. inner shell; 7c. outer shell; 8. first reinforcing rib; 9. second reinforcing rib, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An injection mold for a storage box body, comprising a top plate (1), a fixed template (2), a movable template (3), and a bottom plate (4) arranged sequentially, wherein the top of the movable template (3) is provided with an upwardly protruding molding block (3a), and the two sides of the molding block (3a) and the bottom of the fixed template (2) enclose a sealed molding cavity (5), wherein a cooled and molded shell (7) is provided inside the molding cavity (5), characterized in that, The top of the molding block (3a) is provided with several downwardly recessed slots (3b), and the top of each slot (3b) is provided with a semi-circular molding groove (3b1). The two ends of the molding groove (3b1) are connected to the molding cavity (5). The side wall of the shell (7) is provided with an installation groove (7a) formed inside the slot (3b), and a horizontally arranged connecting rod (7a1) is provided inside the installation groove (7a).

2. The injection mold for the main body of a storage box according to claim 1, characterized in that, The sidewalls of the housing (7) are composed of an inner shell (7b) and an outer shell (7c), which are arranged enclosingly on both sides of the molded block (3a).

3. The injection mold for the main body of a storage box according to claim 2, characterized in that, The top of the molding block (3a) is provided with several longitudinally arranged strip grooves (3c), which are horizontally arranged. The inner shell (7b) and the outer shell (7c) are provided with several integrally connected first reinforcing ribs (8), which are cooled and formed inside the strip grooves (3c).

4. The injection mold for the main body of a storage box according to claim 3, characterized in that, The bottom plate (4) has a slidingly connected push plate (4a) on its inner side. The push plate (4a) has several fixed ejector pins (4b) that slide through the moving template (3) and extend to the bottom of the forming cavity (5).

5. The injection mold for the main body of a storage box according to claim 4, characterized in that, The top of the moving template (3) is provided with a downwardly recessed grid groove (3d), the grid groove (3d) is connected to the bottom of the forming cavity (5), the ejector pin (4b) is located at the bottom of the intersection of the grid groove (3d), the bottom of the shell (7) is provided with a grid-shaped second reinforcing rib (9), and the top of the ejector pin (4b) abuts against the bottom of the second reinforcing rib (9).

6. The injection mold for the main body of a storage box according to claim 1, characterized in that, The top plate (1) is provided with a feed inlet (1a), and the top plate (1) is provided with a flow divider (1b). The bottom of the feed inlet (1a) is connected to the flow divider (1b). The bottom of the flow divider (1b) is provided with a connected nozzle (1c). The bottom of the nozzle (1c) passes through the fixed template (2) and is connected to the molding cavity (5).

7. The injection mold for the main body of a storage box according to claim 1, characterized in that, The fixed template (2) and the moving template (3) are provided with a plurality of cooling channels (6) on their side walls, and the cooling channels (6) are respectively located on both sides of the molding cavity (5).

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