Mobile phone cover mold ejection mechanism

Abstract

The utility model discloses a mobile phone cover mould ejection mechanism which comprises an upper mould and a lower mould, the upper mould is clamped with the lower mould, an inner cavity of the upper mould is fixedly connected with an upper forming mould, a mounting groove is formed in the lower mould, an injection mould is fixedly connected in the mounting groove, a clamping groove is formed in the injection mould, and the upper forming mould and the lower forming mould are fixedly connected in the clamping groove. The utility model relates to the technical field of mobile phone cover injection molds. According to the mobile phone cover mold ejection mechanism, a side ejection rod is pushed to drive a side ejection block connected with the top end of the side ejection rod to slide in an injection mold, then the side edge of a mobile phone cover subjected to injection molding is separated from a lower mold, and then a center ejection rod connected with a connecting rod is pushed to drive a lower forming mold connected with the top end of the center ejection rod to slide in the injection mold; the demolding speed of the mobile phone cover is high, the demolding mode is simple and convenient, the mobile phone cover cannot be abraded in the demolding process, and the production quality of the mobile phone cover cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone case injection mold technology, specifically a mobile phone case mold ejection mechanism. Background Technology

[0002] Phone cases are widely used mobile phone accessories, primarily used to protect phones from scratches, impacts, dust, and everyday wear and tear. There are several manufacturing methods for phone cases, with injection molding being the most common. The injection molding process for phone cases mainly includes the following steps:

[0003] 1. Raw material pretreatment: The plastic raw material is added to the hopper, heated and stirred to fully melt it and meet the requirements for injection molding;

[0004] 2. Mold heating: The mold enters the heating furnace and reaches the predetermined temperature to meet the injection molding requirements;

[0005] 3. Injection molding: The molten plastic material is injected into the mold cavity to fill the cavity;

[0006] 4. Pressure holding: The injected plastic material is kept under a certain pressure in the cavity to ensure the density and dimensional stability of the product;

[0007] 5. Cooling: Reduce the temperature of the injection mold and the plastic product to facilitate rapid demolding;

[0008] 6. Demolding: Remove the plastic product from the mold to complete the injection molding process.

[0009] After existing phone cases are injection molded in a mold, due to the depth of the phone case, the edge of the phone case will be stuck inside the lower mold. At this time, the processing personnel need to use tools to pry the phone case out from the inside of the lower mold to complete the demolding. However, this demolding method will affect the demolding speed of the phone case, and the edges of the phone case are prone to wear when prying it out, thus affecting the production quality of the phone case.

[0010] To address this issue, the present invention provides a mobile phone case mold ejection mechanism, which first ejects the side of the mobile phone case using a side ejector block, and then uses a lower forming mold to eject it a second time from the center of the mobile phone case, thereby solving the aforementioned problem. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this utility model provides a mobile phone case mold ejection mechanism, which solves the aforementioned problems.

[0012] To achieve the above objectives, this utility model provides the following technical solution: a mobile phone case mold ejection mechanism, comprising an upper mold and a lower mold, wherein the upper mold and the lower mold are engaged, an upper forming mold is fixedly connected to the inner cavity of the upper mold, an installation groove is provided inside the lower mold, an injection mold is fixedly connected inside the installation groove, a retaining groove is provided inside the injection mold, a lower forming mold is movably connected inside the retaining groove, and a side top block is engaged at the outer end of the lower forming mold, the side top block being slidably connected to the inside of the injection mold.

[0013] Preferably, the upper forming mold and the lower forming mold have the same shape and are interlocked, the bottom of the upper forming mold is convex, the top of the lower forming mold is provided with a groove, and the side top block is annular.

[0014] Preferably, a connecting plate is fixedly connected to the back of the lower molding die, the connecting plate passes through the injection mold, and a central ejector rod is symmetrically slidably connected inside the connecting plate, the central ejector rod being fixedly connected to the lower molding die.

[0015] Preferably, a connecting rod is slidably connected to the center position of the inner cavity of the connecting plate, and the connecting rod is fixedly connected to the central top rod.

[0016] Preferably, the injection mold has symmetrically slidingly connected side ejector rods inside, the side ejector rods pass through the lower mold, the side ejector rods are slidably connected to the lower mold, and the side ejector rods are fixedly connected to the side ejector block.

[0017] Preferably, the lower mold has an injection hole on one side, which is connected to the injection mold, and the upper mold has a positioning hole at its outer end, with a positioning pin engaged inside the positioning hole, and the positioning pin is inclined. Beneficial effects

[0018] This utility model provides a mobile phone case mold ejection mechanism. Compared with the prior art, it has the following advantages:

[0019] This phone case mold ejection mechanism pushes the side ejector rod, causing the side ejector block connected to its top to slide inside the injection mold. This causes the side of the injection-molded phone case to separate from the lower mold. Then, it pushes the center ejector rod connected to the connecting rod, causing the lower molding mold connected to its top to slide inside the injection mold. This results in a secondary ejection from the center of the phone case. The demolding speed of the phone case is fast and the demolding method is simple. The demolding process will not cause wear to the phone case and will not affect the production quality of the phone case. Attached Figure Description

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

[0021] Figure 2 This is an exploded view of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the injection mold and the lower forming mold of this utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure between the upper mold and the upper forming mold of this utility model.

[0024] In the diagram: 1. Upper mold; 2. Lower mold; 3. Upper forming mold; 4. Mounting groove; 5. Injection mold; 6. Slot; 7. Lower forming mold; 8. Side top block; 9. Connecting plate; 10. Center ejector pin; 11. Connecting rod; 12. Side ejector pin; 13. Injection hole; 14. Positioning hole; 15. Positioning pin. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0026] Please see Figures 1-4A mobile phone case mold ejection mechanism includes an upper mold 1 and a lower mold 2, which are engaged with each other. An upper forming mold 3 is fixedly connected to the inner cavity of the upper mold 1. An installation groove 4 is provided inside the lower mold 2. An injection mold 5 is fixedly connected inside the installation groove 4. A retaining groove 6 is provided inside the injection mold 5. A lower forming mold 7 is movably connected inside the retaining groove 6. A side top block 8 is engaged at the outer end of the lower forming mold 7. The side top block 8 is slidably connected inside the injection mold 5. The purpose of this setup is that, during the injection molding process, the upper mold 1 and lower mold 2 are first engaged, and molten plastic is injected into the injection mold 5. At this time, the molten plastic enters between the upper forming mold 3 and the lower forming mold 7. After sufficient injection molding, the upper mold 1 and lower mold 2 are cooled to form the phone case. During the demolding process, the upper mold 1 and lower mold 2 are first separated, and the side ejector block 8 inside the injection mold 5 is moved to initially eject the side of the phone case, causing the side of the phone case to separate from the injection mold 5. After the side of the phone case is separated from the injection mold 5, the lower forming mold 7 inside the injection mold 5 is pushed. At this time, the lower forming mold 7 ejects the phone case a second time from the center position, thus completely separating the phone case from the injection mold 5. By using a two-stage ejection method, the demolding efficiency of the phone case from the injection mold 5 is improved. At the same time, during the demolding process, the processing personnel do not need to use tools to demold the phone case, thereby avoiding wear on the phone case during demolding and thus preventing the production quality of the phone case from being affected.

[0027] Preferably, the upper molding mold 3 and the lower molding mold 7 have the same shape and are interlocked. The bottom of the upper molding mold 3 is convex, and the top of the lower molding mold 7 is provided with a groove. The side top block 8 is annular. The purpose of this arrangement is that the annular lower molding mold 7 can be ejected from the side of the molded mobile phone case, and the convexity at the bottom of the upper molding mold 3 and the groove at the top of the lower molding mold 7 allow the molten plastic to be formed in the gap between the two.

[0028] Preferably, a connecting plate 9 is fixedly connected to the back of the lower molding mold 7, the connecting plate 9 penetrates the injection mold 5, and a central ejector rod 10 is symmetrically slidably connected inside the connecting plate 9. The central ejector rod 10 is fixedly connected to the lower molding mold 7, and a connecting rod 11 is slidably connected to the center position of the inner cavity of the connecting plate 9. The connecting rod 11 is fixedly connected to the central ejector rod 10. The purpose of this arrangement is that during secondary demolding, by pushing the connecting rod 11 at the center position of the connecting plate 9, the connecting rod 11 drives the two central ejector rods 10 to slide inside the connecting plate 9, thereby causing the central ejector rod 10 to drive the lower molding mold 7 to slide inside the injection mold 5, thus ejecting the phone case from its center position.

[0029] Preferably, the injection mold 5 has symmetrically slidingly connected side ejector rods 12, which penetrate the lower mold 2 and are slidably connected to it. The side ejector rods 12 are also fixedly connected to the side ejector block 8. This arrangement is intended to push the side ejector rods 12 through the lower mold 2 during the initial ejection, causing the fixed side ejector block 8 to slide inside the injection mold 5, thus ejecting the side end of the phone case from inside the injection mold 5. Example

[0030] Please see Figures 1-4 This embodiment provides a technical solution for the ejection mechanism of a mobile phone case mold based on Embodiment 1: An injection hole 13 is provided on one side of the lower mold 2, and the injection hole 13 is connected to the injection mold 5. A positioning hole 14 is provided at the outer end of the upper mold 1, and a positioning pin 15 is engaged inside the positioning hole 14. The positioning pin 15 is inclined. The purpose of this arrangement is that the injection hole 13 is used to inject molten plastic, allowing the molten plastic to enter the interior of the injection mold 5, and the inclined positioning pin 15 is used to engage the upper mold 1 and the lower mold 2, thereby completing the mold closing operation of the upper mold 1 and the lower mold 2.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile phone case mold ejection mechanism, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) is engaged with the lower mold (2). The upper forming mold (3) is fixedly connected to the inner cavity of the upper mold (1). The lower mold (2) has an installation groove (4) inside. The injection mold (5) is fixedly connected inside the installation groove (4). The injection mold (5) has a slot (6) inside. The lower forming mold (7) is movably connected inside the slot (6). The side top block (8) is engaged at the outer end of the lower forming mold (7). The side top block (8) is slidably connected inside the injection mold (5).

2. The mobile phone case mold ejection mechanism according to claim 1, characterized in that: The upper forming mold (3) and the lower forming mold (7) have the same shape and are interlocked. The bottom of the upper forming mold (3) is convex, the top of the lower forming mold (7) is provided with a groove, and the side top block (8) is annular.

3. The mobile phone case mold ejection mechanism according to claim 1, characterized in that: The lower molding die (7) is fixedly connected to a connecting plate (9), which passes through the injection mold (5). A central push rod (10) is symmetrically slidably connected inside the connecting plate (9), and the central push rod (10) is fixedly connected to the lower molding die (7).

4. The mobile phone case mold ejection mechanism according to claim 3, characterized in that: A connecting rod (11) is slidably connected to the center of the inner cavity of the connecting plate (9), and the connecting rod (11) is fixedly connected to the center top rod (10).

5. The mobile phone case mold ejection mechanism according to claim 1, characterized in that: The injection mold (5) has a symmetrical sliding connection of a side ejector rod (12), which passes through the lower mold (2). The side ejector rod (12) is slidably connected to the lower mold (2), and the side ejector rod (12) is fixedly connected to the side ejector block (8).

6. The mobile phone case mold ejection mechanism according to claim 1, characterized in that: The lower mold (2) has an injection hole (13) on one side, which is connected to the injection mold (5). The upper mold (1) has a positioning hole (14) at its outer end, and a positioning pin (15) is engaged inside the positioning hole (14). The positioning pin (15) is inclined.

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