Injection mold with ejection mechanism

Abstract

The utility model relates to an injection mold, in particular to an injection mold with an ejection mechanism, which comprises a base and a top plate, an upper mold is mounted on the lower end face of the top plate, a mounting box is fixedly connected to the upper end face of the base, and a plurality of uniformly distributed notches are formed in the outer wall of the mounting box. A lower mold matched with the upper mold is installed on the upper end face of the installation box and comprises a plurality of mold blocks which are evenly distributed and slidably connected with the upper end face of the installation box. The device is simple in structure, a corresponding power mechanism does not need to be configured, generated power energy is effectively utilized, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to an injection mold with an ejection mechanism. Background Technology

[0002] Injection molds are used to process plastic products, enabling them to have a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, followed by cooling and solidification to obtain the injection molded part.

[0003] After injection molding, the molded part will be embedded inside the mold and difficult to demold. Usually, an ejection mechanism needs to be installed in the mold to facilitate demolding.

[0004] Existing injection molds with ejection mechanisms require small power mechanisms, such as cylinders and electric telescopic rods, which increases production costs and wastes energy. Summary of the Invention

[0005] The purpose of this invention is to provide an injection mold with an ejection mechanism, which has a simple structure, does not require a corresponding power mechanism, and effectively utilizes the generated power energy, thereby reducing production costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection mold with an ejection mechanism, comprising a base and a top plate, an upper mold mounted on the lower end face of the top plate, an mounting box fixedly connected to the upper end face of the base, a plurality of evenly distributed notches on the outer wall of the mounting box, a lower mold matching the upper mold mounted on the upper end face of the mounting box, the lower mold comprising a plurality of evenly distributed mold blocks that are slidably connected to the upper end face of the mounting box;

[0007] The upper surface of the mounting box has multiple evenly distributed grooves. The lower end of each groove has a through hole. An ejector block is movably connected to the interior of each groove. The lower end of the ejector block is fixedly connected to a connecting rod extending through the through hole into the interior of the mounting box. The lower ends of the multiple connecting rods are fixedly connected to a movable plate. The outer wall of the movable plate is fixedly connected to multiple evenly distributed connecting plates extending through multiple notches into the exterior of the mounting box. The other ends of the multiple connecting plates are fixedly connected to an abutment plate.

[0008] In order to move multiple mold blocks, as a preferred embodiment of the present invention, an injection mold with an ejection mechanism, wherein each of the multiple mold blocks is fixedly connected to a drive plate, and each of the drive plates has a through-hole on its upper end face. Each of the four corners of the upper end face of the abutment plate is fixedly connected to an inclined block that matches the multiple inclined holes, and the other end of each of the inclined blocks passes through the multiple inclined holes.

[0009] In order to push the abutment plate downward, as a preferred embodiment of the injection mold with an ejection mechanism of this utility model, the lower end face of the top plate is fixedly connected with a plurality of evenly distributed abutment rods located around the upper mold, and the other ends of the plurality of abutment rods abut against the upper end face of the abutment plate.

[0010] In order to move the top plate, as a preferred embodiment of the present invention, an injection mold with an ejection mechanism is provided, wherein two multi-stage electric telescopic rods are fixedly connected between the base and the top plate.

[0011] In order to push the movable plate upward, as a preferred embodiment of the injection mold with an ejection mechanism of this utility model, a plurality of evenly distributed springs are fixedly connected between the lower end of the inner side of the mounting box and the lower end face of the movable plate.

[0012] In order to make the multiple mold blocks move smoothly, as a preferred embodiment of the present invention, an injection mold with an ejection mechanism, the multiple mold blocks are slidably connected to the mounting box by trapezoidal sliders and trapezoidal grooves.

[0013] To facilitate the injection of molten plastic into the lower and upper molds, as a preferred embodiment of the present invention, an injection mold with an ejection mechanism is preferably provided with an injection tube fixedly connected to the upper end face of the top plate, which communicates with the upper mold.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] During the mold closing process of the upper and lower molds in this application, the moving plate compresses multiple springs to contract, causing the multiple springs to generate elastic force. This elastic force is stored in the multiple springs to move the moving plate upward. During the separation process of the upper and lower molds, the rebound force of the multiple springs pushes the moving plate upward. The moving plate pushes the injection molded part out of the lower mold through the cooperation between multiple connecting rods and multiple ejector blocks. This eliminates the need for a corresponding power mechanism and effectively utilizes the generated power energy, reducing production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a frontal cross-sectional view of the structure of this utility model in its contracted state;

[0018] Figure 3 This is a top view cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a frontal cross-sectional view of the unfolded structure of this utility model.

[0020] In the diagram: 1. Base; 2. Top plate; 3. Upper mold; 4. Mounting box; 5. Notch; 6. Lower mold; 7. Mold block; 8. Groove; 9. Through hole; 10. Ejector block; 11. Connecting rod; 12. Moving plate; 13. Connecting plate; 14. Abutment plate; 15. Drive plate; 16. Angled hole; 17. Angled block; 18. Abutment rod; 19. Multi-stage electric telescopic rod; 20. Spring; 21. Injection tube. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. Furthermore, in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0022] Please see Figures 1 to 4 An injection mold with an ejection mechanism includes a base 1 and a top plate 2. An upper mold 3 is installed on the lower end face of the top plate 2. An installation box 4 is fixedly connected to the upper end face of the base 1. The outer wall of the installation box 4 has multiple evenly distributed notches 5. A lower mold 6 that matches the upper mold 3 is installed on the upper end face of the installation box 4. The lower mold 6 includes multiple evenly distributed mold blocks 7 that are slidably connected to the upper end face of the installation box 4.

[0023] The upper surface of the mounting box 4 has multiple evenly distributed grooves 8. The lower end of each groove 8 has a through hole 9. Each groove 8 is movably connected to an ejector block 10. The lower end of the ejector block 10 is fixedly connected to a connecting rod 11 that extends through the through hole 9 into the mounting box 4. The lower ends of the multiple connecting rods 11 are fixedly connected to a movable plate 12. The outer wall of the movable plate 12 is fixedly connected to multiple evenly distributed connecting plates 13 that extend through multiple notches 5 into the outside of the mounting box 4. The other ends of the multiple connecting plates 13 are fixedly connected to an abutment plate 14.

[0024] In this embodiment: During injection molding, the top plate 2 moves downward, causing multiple abutment rods 18 to abut against the abutment plate 14. Then, the multiple abutment rods 18 push the abutment plate 14 downward. The abutment plate 14, together with multiple connecting plates 13, drives the moving plate 12 downward. The moving plate 12 compresses multiple springs 20 to contract. Then, the moving plate 12, together with multiple connecting rods 11, drives multiple ejector blocks 10 to enter the groove 8 respectively. At the same time, multiple mold blocks 7 move and approach each other, causing multiple mold blocks 7 to abut against each other, thereby assembling into a complete lower mold 6. At this time, the top plate 2 drives the upper mold 3 to abut against and connect with the lower mold 6, so that the molten plastic can be injected into the lower mold 6 and the upper mold 3 through the injection tube 21.

[0025] When the injection molded part needs to be demolded after injection molding, the top plate 2 moves upward, driving multiple abutment rods 18 and the upper mold 3 to move upward and reset. At the same time, multiple springs 20 rebound, and multiple springs 20 push the moving plate 12 to move upward. The moving plate 12, together with multiple connecting rods 11, drives multiple ejector blocks 10 to move out of multiple grooves 8 respectively, and pushes the injection molded part out of the lower mold 6 through multiple ejector blocks 10. At the same time, multiple mold blocks 7 move and move away from each other, so that the lower mold 6 is dispersed around the injection molded part, so that the injection molded part is located on the upper surface of multiple ejector blocks 10, and the injection molded part can be removed.

[0026] During the closing process of the upper mold 3 and the lower mold 6, the moving plate 12 compresses multiple springs 20 to contract, causing the multiple springs 20 to generate elastic force, thereby storing the upward movement power of the moving plate 12 through the multiple springs 20; during the separation process of the upper mold 3 and the lower mold 6, the rebound force of the multiple springs 20 pushes the moving plate 12 to move upward, and the moving plate 12 pushes the injection molded part out of the lower mold 6 through the mutual cooperation between multiple connecting rods 11 and multiple ejector blocks 10, so that the ejection mechanism can play its role. There is no need to configure a corresponding power mechanism, and the generated power energy is effectively utilized, reducing production costs.

[0027] As a technical optimization of this utility model, a drive plate 15 is fixedly connected to the outer wall of multiple mold blocks 7. An oblique hole 16 is opened through the upper end surface of multiple drive plates 15. An oblique block 17 that matches the multiple oblique holes 16 is fixedly connected to the four corners of the upper end surface of the abutment plate 14. The other end of the multiple oblique blocks 17 passes through the multiple oblique holes 16 respectively.

[0028] In this embodiment: when the moving plate 12 moves downward, the moving plate 12, together with multiple connecting plates 13 and abutting plates 14, drives multiple inclined blocks 17 to move downward. During the movement of the multiple inclined blocks 17, the cooperation between the multiple inclined blocks 17 and the multiple inclined holes 16 drives multiple driving plates 15 to move and move closer to each other, thereby driving multiple mold blocks 7 to move and move closer to each other.

[0029] When the moving plate 12 moves upward, the moving plate 12, together with multiple connecting plates 13 and abutting plates 14, drives multiple inclined blocks 17 to move upward. During the movement of the multiple inclined blocks 17, the cooperation between the multiple inclined blocks 17 and the multiple inclined holes 16 drives multiple driving plates 15 to move and move away from each other, thereby driving multiple mold blocks 7 to move and move away from each other.

[0030] As a technical optimization of this utility model, the lower end face of the top plate 2 is fixedly connected with a plurality of evenly distributed abutment rods 18 located around the upper mold 3, and the other ends of the plurality of abutment rods 18 abut against the upper end face of the abutment plate 14.

[0031] In this embodiment, multiple abutment rods 18 can push the abutment plate 14 downward.

[0032] As a technical optimization of this utility model, two multi-stage electric telescopic rods 19 are fixedly connected between the base 1 and the top plate 2.

[0033] In this embodiment, two multi-stage electric telescopic rods 19 can drive the top plate 2 to move.

[0034] As a technical optimization of this utility model, a plurality of evenly distributed springs 20 are fixedly connected between the lower end of the inner side of the mounting box 4 and the lower end face of the moving plate 12.

[0035] In this embodiment, multiple springs 20 can push the movable plate 12 to move upward.

[0036] As a technical optimization of this utility model, multiple mold blocks 7 and mounting box 4 are slidably connected by trapezoidal sliders and trapezoidal grooves.

[0037] In this embodiment, the trapezoidal slider and trapezoidal groove enable multiple mold blocks 7 to move smoothly.

[0038] As a technical optimization of this utility model, the upper end face of the top plate 2 is fixedly connected with an injection tube 21 that communicates with the upper mold 3.

[0039] In this embodiment, the injection tube 21 facilitates the injection of molten plastic into the lower mold 6 and the upper mold 3.

[0040] Working principle: During injection molding, two multi-stage electric telescopic rods 19 drive the top plate 2 to move downward, thereby driving multiple abutment rods 18 to abut against the abutment plate 14. Then, the multiple abutment rods 18 push the abutment plate 14 to move downward. The abutment plate 14, together with multiple connecting plates 13, drives the moving plate 12 to move downward. The moving plate 12 compresses multiple springs 20 to retract. Then, the moving plate 12, together with multiple connecting rods 11, drives multiple ejector blocks 10 to enter the groove 8 respectively.

[0041] At the same time, the moving plate 12, together with multiple connecting plates 13 and abutting plates 14, drives multiple inclined blocks 17 to move downward. During the movement of the multiple inclined blocks 17, the cooperation between the multiple inclined blocks 17 and the multiple inclined holes 16 drives multiple driving plates 15 to move and move closer to each other, thereby driving multiple mold blocks 7 to move and move closer to each other, so that the multiple mold blocks 7 abut against each other and are combined into a complete lower mold 6. At this time, the top plate 2 drives the upper mold 3 to abut against and connect with the lower mold 6, so that the molten plastic can be injected into the lower mold 6 and the upper mold 3 through the injection tube 21.

[0042] When the injection molded part needs to be demolded after injection molding, two multi-stage electric telescopic rods 19 drive the top plate 2 to move upward, thereby driving multiple abutment rods 18 and the upper mold 3 to move upward and reset. At the same time, multiple springs 20 rebound, and multiple springs 20 push the moving plate 12 to move upward. The moving plate 12, together with multiple connecting rods 11, drives multiple ejector blocks 10 to move out of multiple grooves 8 respectively, and pushes the injection molded part out of the lower mold 6 through multiple ejector blocks 10.

[0043] At the same time, the moving plate 12, together with multiple connecting plates 13 and abutting plates 14, drives multiple inclined blocks 17 to move upward. During the movement of the multiple inclined blocks 17, the cooperation between the multiple inclined blocks 17 and the multiple inclined holes 16 drives multiple driving plates 15 to move and move away from each other, thereby driving multiple mold blocks 7 to move and move away from each other, so that the lower mold 6 is dispersed around the injection molded part, so that the injection molded part is located on the upper surface of multiple ejector blocks 10, and the injection molded part can be removed.

[0044] During the closing process of the upper mold 3 and the lower mold 6, the moving plate 12 compresses multiple springs 20, causing the multiple springs 20 to generate elastic force. This elastic force is stored in the multiple springs 20 to move the moving plate 12 upward. During the separation process of the upper mold 3 and the lower mold 6, the rebound force of the multiple springs 20 pushes the moving plate 12 upward. The moving plate 12 pushes the injection molded part out of the lower mold 6 through the mutual cooperation between multiple connecting rods 11 and multiple ejector blocks 10, so that the ejection mechanism can play its role. There is no need to configure a corresponding power mechanism, and the generated power energy is effectively utilized, reducing production costs.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection mold with an ejection mechanism, comprising a base (1) and a top plate (2), wherein an upper mold (3) is mounted on the lower end face of the top plate (2), characterized in that: The upper end face of the base (1) is fixedly connected to the mounting box (4). The outer wall of the mounting box (4) is provided with multiple evenly distributed notches (5). The upper end face of the mounting box (4) is equipped with a lower mold (6) that matches the upper mold (3). The lower mold (6) includes multiple evenly distributed mold blocks (7) that are slidably connected to the upper end face of the mounting box (4). The upper surface of the mounting box (4) is provided with a plurality of evenly distributed grooves (8), and the lower end of each of the plurality of grooves (8) is provided with a through hole (9). Each of the plurality of grooves (8) is movably connected to an ejector block (10). The lower end of the ejector block (10) is fixedly connected to a connecting rod (11) extending through the through hole (9) into the mounting box (4). The lower ends of the plurality of connecting rods (11) are fixedly connected to a moving plate (12). The outer wall of the moving plate (12) is fixedly connected to a plurality of evenly distributed connecting plates (13) extending through a plurality of notches (5) into the outside of the mounting box (4). The other end of the plurality of connecting plates (13) is fixedly connected to an abutment plate (14).

2. The injection mold with an ejection mechanism according to claim 1, characterized in that: A drive plate (15) is fixedly connected to the outer wall of each of the multiple mold blocks (7). An oblique hole (16) is opened through the upper end face of each of the multiple drive plates (15). An oblique block (17) that matches the multiple oblique holes (16) is fixedly connected to the four corners of the upper end face of the abutment plate (14). The other end of the multiple oblique blocks (17) passes through the multiple oblique holes (16).

3. The injection mold with an ejection mechanism according to claim 1, characterized in that: The lower end face of the top plate (2) is fixedly connected with a plurality of evenly distributed abutment rods (18) located around the upper mold (3), and the other end of the plurality of abutment rods (18) abuts against the upper end face of the abutment plate (14).

4. The injection mold with an ejection mechanism according to claim 1, characterized in that: Two multi-stage electric telescopic rods (19) are fixedly connected between the base (1) and the top plate (2).

5. An injection mold with an ejection mechanism according to claim 1, characterized in that: Multiple evenly distributed springs (20) are fixedly connected between the lower end of the inner side of the mounting box (4) and the lower end face of the moving plate (12).

6. An injection mold with an ejection mechanism according to claim 1, characterized in that: The multiple mold blocks (7) are slidably connected to the mounting box (4) by trapezoidal sliders and trapezoidal grooves.

7. An injection mold with an ejection mechanism according to claim 1, characterized in that: The upper end face of the top plate (2) is fixedly connected to an injection tube (21) that communicates with the upper mold (3).

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