Injection mold

Abstract

The utility model provides an injection mold which is a front mold core-pulling mold and is internally provided with a panel, a front mold plate arranged below the panel in a sliding manner, a rear mold plate arranged below the front mold plate in a sliding manner, a front mold core embedded in the front mold plate and a rear mold core embedded in the rear mold plate, the front mold core is buckled on the rear mold core, and a cavity is formed between the front mold core and the rear mold core; a fixing block is arranged on the panel, an insert is arranged on the fixing block in a sliding mode, one end of the fixing block extends into the cavity, and the fixing block and the insert abut against each other through an inclined sliding face; a guide groove is formed in the cavity, and when the panel slides relative to the front mold plate, the fixing block follows the panel and can drive the insert to slide along the guide groove so as to be separated from a formed injection molding part. The injection mold disclosed by the utility model can improve the product quality of injection molded parts.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection mold. Background Technology

[0002] In injection molding, the design and manufacture of molds directly affect the quality of molded parts and production efficiency. The mold opening process is a critical step in the molding cycle, and its smoothness is essential for ensuring the integrity of the molded parts and reducing production losses.

[0003] However, injection molds currently face some technical challenges during the mold opening process, especially the jamming phenomenon during mold opening and closing and the dragging problem on the surface of injection molded parts. These problems have become bottlenecks restricting the improvement of injection molded parts quality and the growth of production efficiency.

[0004] Specifically, if the mold is poorly designed or lacks manufacturing precision during the opening process, it can easily lead to excessively tight fits between mold components, resulting in jamming. This jamming not only prolongs mold opening time and reduces production efficiency, but may also cause mold wear due to excessive friction, shortening the mold's lifespan. More seriously, jamming is often accompanied by abnormal movement of the injection molded part within the mold, increasing the risk of scratches or drags on the surface of the injection molded part, severely affecting its appearance quality and yield, and hindering the improvement of injection molded part quality. Utility Model Content

[0005] In view of this, the present invention aims to provide an injection mold to improve the product quality of injection molded parts.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] An injection mold is a front mold core-pulling mold. The injection mold has a panel, a front template slidably disposed below the panel, a rear template slidably disposed below the front template, a front mold core embedded on the front template, and a rear mold core embedded on the rear template.

[0008] The front mold core is fastened to the rear mold core, and a cavity is provided between the front mold core and the rear mold core;

[0009] The panel is provided with a fixing block, and an insert is slidably provided on the fixing block. One end of the fixing block extends into the cavity, and the fixing block and the insert abut against each other through an inclined sliding surface.

[0010] The cavity is provided with a guide groove. When the panel slides relative to the front template, the fixing block moves with the panel and can drive the insert to slide along the guide groove and detach from the molded injection part.

[0011] Furthermore, the fixing block is wedge-shaped and has an inclined surface that faces the insert.

[0012] Furthermore, the insert is provided with a guide groove, and the fixed block is provided with a guide block. When the insert slides along the guide groove, the guide block slides within the guide groove.

[0013] Furthermore, the guide groove is a T-shaped groove or a dovetail groove, and the guide block is adapted to the guide groove.

[0014] Furthermore, the insert includes a sliding portion and an embedded portion disposed on the sliding portion; when the panel slides away from the front template, the embedded portion can disengage from the molded injection part.

[0015] Furthermore, the insert also includes a limiting block disposed on the sliding portion, and the insert is slidably disposed in the guide groove via the limiting block.

[0016] Furthermore, a baffle is provided on the front mold core, and the baffle is located above the guide groove;

[0017] When the sliding part slides along the guide groove, the limiting block is located in the guide groove and is constrained by the baffle to constrain the insert on the front mold core.

[0018] Furthermore, the injection mold also has an opening and closing mechanism;

[0019] The opening and closing mechanism includes a driving member disposed on the front template, and limiting members disposed between the panel and the front template, and between the front template and the rear template, respectively;

[0020] The driving member can drive the panel and the rear template to slide relative to the front template, and the limiting member is used to constrain the sliding stroke of the panel and the rear template.

[0021] Furthermore, the driving component includes a bidirectional hydraulic cylinder disposed on the front template; and / or,

[0022] The limiting member between the panel and the front template, and the limiting member between the front template and the rear template, are both made of plug screws.

[0023] Furthermore, the injection mold also has an ejection mechanism located below the rear mold plate, the ejection mechanism being used to eject the molded injection part from the rear mold core.

[0024] Compared with the prior art, this utility model has the following advantages:

[0025] The injection mold described in this utility model uses a fixed block on the panel and an insert slidably mounted on the fixed block. When the panel moves the fixed block, the insert can be driven to detach from the molded injection part through the inclined sliding surface, avoiding scratches and dragging of the molded injection part during mold opening, thereby improving the yield rate of the molded injection part. Furthermore, the panel can drive the fixed block to move, which reduces the need for additional core-pulling mechanisms, helps save space in the mold, and has a simple structure that is easy to design and implement.

[0026] Furthermore, the wedge-shaped fixing block facilitates its placement within the mold cavity, resulting in a simple structure and ease of design implementation. The guide groove and guide block limit the sliding range of the insert as it slides on the fixing block, thus constraining it. This design also simplifies structure and facilitates design implementation. The guide groove can be a T-groove or dovetail groove, with the guide block fitting snugly within it. This facilitates the placement of the guide block within the groove and better constrains it during sliding. The design also simplifies structure and facilitates design implementation. Finally, the embedded part allows for adjustments to its shape to accommodate holes or grooves on the injection molded part without affecting the sliding part. This design also simplifies structure and facilitates design implementation.

[0027] Furthermore, the limiting block facilitates the sliding of the insert along the guide groove and better constrains its sliding stroke. The baffle restrains the limiting block within the guide groove, allowing the insert to be secured to the front mold core. The baffle also facilitates the installation of the insert on the front mold core, resulting in a simple structure that is easy to design and implement. The opening and closing mechanism facilitates the sliding between the panel, front mold plate, and rear mold plate, and the limiting component constrains their sliding stroke. The driving component includes a bidirectional hydraulic cylinder, facilitating the opening and closing of the control panel, front mold plate, and rear mold plate. The structure is simple, and the limiting component is a plug screw, simplifying the structure, facilitating manufacturing, and aiding design and implementation. The ejection mechanism facilitates the ejection of the molded injection part from the rear mold core, resulting in a simple structure that is easy to design and implement. Attached Figure Description

[0028] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the injection mold described in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of a first partial structure of the injection mold described in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of a second partial structure of the injection mold described in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the third partial structure of the injection mold described in an embodiment of the present utility model;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Panel; 2. Front template; 3. Rear template; 4. Front mold core; 5. Rear mold core; 6. Fixing block;

[0035] 7. Inlay;

[0036] 701. Sliding part; 702. Embedded part; 703. Limiting block;

[0037] 8. Guide groove; 9. Guide channel; 10. Guide block; 11. Baffle;

[0038] 12. Opening and closing mechanism;

[0039] 1201. Driving component; 1202. Limiting component;

[0040] t, cavity; s, inclined plane. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this 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 this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Taking the injection mold described in this utility model as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "back," are defined based on the vertical direction (also known as the height direction), horizontal direction (also known as the width direction), and front-back direction (also known as the length direction) of the injection mold. "Inner" and "outer" are defined based on the outline of the corresponding component. For example, "inner" and "outer" are defined based on the outline of the injection mold. The side of the injection mold outline closer to the middle of the injection mold is "inner," and the opposite side is "outer."

[0044] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0045] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] Example 1

[0047] This embodiment relates to an injection mold, which aims to improve the product quality of injection molded parts by optimizing the structure of the injection mold.

[0048] In terms of overall structure, such as Figure 1 As shown, the injection mold in this embodiment is a front mold core-pulling mold. The injection mold has a panel 1, a front template 2 slidably disposed below the panel 1, a rear template 3 slidably disposed below the front template 2, a front mold core 4 embedded on the front template 2, and a rear mold core 5 embedded on the rear template 3.

[0049] The front mold core 4 is fastened to the rear mold core 5, and a cavity t is provided between the front mold core 4 and the rear mold core 5. A fixing block 6 is provided on the panel 1, and an insert 7 is slidably provided on the fixing block 6. One end of the fixing block 6 extends into the cavity t, and the fixing block 6 and the insert 7 abut against each other through an inclined sliding surface. A guide groove 8 is provided in the cavity t. When the panel 1 slides relative to the front mold plate 2, the fixing block 6 moves with the panel 1, which can drive the insert 7 to slide along the guide groove 8 and detach from the molded injection part.

[0050] As described above, the injection mold in this embodiment uses a fixed block 6 on the panel 1 and an insert 7 slidably disposed on the fixed block 6. When the panel 1 moves the fixed block 6, the insert 7 can be driven to detach from the molded injection part through the inclined sliding surface, avoiding scratches and drags on the molded injection part during mold opening, thereby improving the yield rate of the molded injection part. Furthermore, the panel 1 can drive the fixed block 6 to move, which reduces the need for additional core-pulling mechanism arrangements, helps save space in the mold, and has a simple structure that is easy to design and implement.

[0051] Specifically, in this embodiment, as an exemplary structure, combined with Figures 1 to 4As shown, the structures of panel 1, front template 2 and rear template 3 in this embodiment can all refer to the corresponding structures in the prior art, and will not be described in detail here. In this embodiment, panel 1 is provided with a fixing block 6. The fixing block 6 can be wedge-shaped for example and has an inclined surface s. The inclined surface s is set towards the insert 7. The inclined surface s is the inclined sliding surface between the fixing block 6 and the insert 7, so that the fixing block 6 is wedge-shaped, which facilitates the arrangement of the fixing block 6 in the cavity t. The structure is simple and easy to design and implement.

[0052] More specifically, in order to better slide the insert 7 onto the fixed block 6, the insert 7 in this embodiment is provided with a guide groove 9, and the fixed block 6 is provided with a guide block 10. When the insert 7 slides along the guide groove 8, the guide block 10 slides within the guide groove 9. The setting of the guide groove 9 and the guide block 10 makes it easier to limit the sliding range of the insert 7 when it slides on the fixed block 6, so as to constrain the insert 7 onto the fixed block 6. The structure is simple and easy to design and implement.

[0053] Among them, combined Figures 1 to 4 As shown, in this embodiment, the guide groove 9 can be, for example, a T-shaped groove or a dovetail groove. Correspondingly, the guide block 10 is adapted to the guide groove 9, so that the guide groove 9 is a T-shaped groove or a dovetail groove, and the guide block 10 is adapted to the guide groove 9, which facilitates the arrangement of the guide block 10 in the guide groove 9. When the guide block 10 slides in the guide groove 9, it can better constrain the guide block 10 in the guide groove 9. The structure is simple and easy to design and implement.

[0054] It is worth mentioning that, combined with Figures 1 to 4 As shown, in this embodiment, the fixing block 6 and the insert 7 together with the front mold core 4 and the rear mold core 5 constitute the injection space of the injection molded part. The injection molded part is formed between the front mold core 4, the fixing block 6, the insert 7 and the rear mold core 5. Therefore, in this embodiment, the fixing block 6 and the insert 7 can be processed according to the surface shape of the injection molded part to be formed.

[0055] In addition, in order to better optimize the structure of the insert 7, the insert 7 in this embodiment includes a sliding part 701 and an embedded part 702 provided on the sliding part 701. When the panel 1 slides away from the front template 2, the embedded part 702 can be detached from the molded injection part. By setting the embedded part 702, it is convenient to change the shape of the embedded part 702 according to the shape of the hole or groove on the injection part without affecting the setting of the sliding part 701. The structure is simple and easy to design and implement.

[0056] Specifically, in combination Figures 1 to 4As shown, the insert 7 in this embodiment also includes a limiting block 703 disposed on the sliding part 701. The insert 7 is slidably disposed in the guide groove 8 through the limiting block 703. The setting of the limiting block 703 facilitates the sliding of the insert 7 along the guide groove 8, and the setting of the limiting block 703 can better constrain the sliding stroke of the insert 7 when sliding along the guide groove 8.

[0057] More specifically, in this embodiment, the front mold core 4 is provided with a baffle 11, which is located above the guide groove 8. That is, the guide groove 8 is formed between the baffle 11 and the front mold core 4. When the sliding part 701 slides along the guide groove 8, the limiting block 703 is located in the guide groove 8 and is constrained by the baffle 11 to constrain the insert 7 on the front mold core 4. The setting of the limiting block 703 facilitates the sliding of the insert 7 along the guide groove 8, and the setting of the limiting block 703 can better constrain the sliding stroke of the insert 7 when sliding along the guide groove 8.

[0058] In addition, in order to better control the opening and closing of the injection mold, combined with Figures 1 to 4 As shown, the injection mold in this embodiment is also provided with an opening and closing mechanism 12. The opening and closing mechanism 12 includes a driving member 1201 provided on the front template 2, and limiting members 1202 respectively provided between the panel 1 and the front template 2, and between the front template 2 and the rear template 3. The driving member 1201 can drive the panel 1 and the rear template 3 to slide relative to the front template 2. The limiting member 1202 is used to constrain the sliding stroke of the panel 1 and the rear template 3. The opening and closing mechanism 12 facilitates the mutual sliding of the panel 1, the front template 2 and the rear template 3, and the limiting member 1202 facilitates the constraint of the sliding stroke of the three. The structure is simple and easy to design and implement.

[0059] Specifically, in this embodiment, the driving component 1201 of the opening and closing mechanism 12 can be, for example, a bidirectional hydraulic cylinder as in the prior art. The bidirectional hydraulic cylinder is mounted on the front template 2, and its two output ends are respectively connected to the panel 1 and the rear template 3 to drive the relative sliding of the panel 1, the front template 2, and the rear template 3. The number of bidirectional hydraulic cylinders can be, for example, four evenly arranged at the four corners of the front template 2 to better control the relative sliding of the panel 1, the front template 2, and the rear template 3. The driving component 1201 includes bidirectional hydraulic cylinders, which facilitates the opening and closing of the control panel 1, the front template 2, and the rear template 3, resulting in a simple structure. In this embodiment, the limiting components 1202 between the panel 1 and the front template 2, and between the front template 2 and the rear template 3, are both made of plug screws. This makes the limiting components 1202 simple in structure, easy to process, and convenient for design and implementation.

[0060] It is worth mentioning that when controlling the opening of the injection mold, the opening or closing of the control panel 1 and the front platen 2, and the front platen 2 and the rear platen 3 can be facilitated by supplying oil to different cylinders of the bidirectional hydraulic cylinder. Furthermore, the sliding stroke of the control panel 1 and the front platen 2, and the front platen 2 and the rear platen 3 after the mold is opened is controlled by the plug screw. By changing the plug screw, the sliding stroke of the control panel 1 and the front platen 2, and the front platen 2 and the rear platen 3 after the mold is opened can be changed.

[0061] In addition, the injection mold in this embodiment also has an ejection mechanism located below the rear mold plate 3. The ejection mechanism is used to eject the molded injection part from the rear mold core 5. The specific structure of the ejection mechanism can be referred to the relevant part of the existing ejection mechanism located below the rear mold plate 3, and will not be repeated here. The other structures of the injection mold can also be referred to the relevant part of the existing injection mold, and will not be repeated here. The specific arrangement of the other structures of the injection mold can also refer to the arrangement in the existing injection mold, and will not be repeated here either.

[0062] In this embodiment, when the injection mold is in use, the front mold plate 2 first closes with the rear mold plate 3, the front mold core 4 engages with the rear mold core 5, and then the panel 1 closes with the front mold plate 2. At this time, the panel 1 moves towards the front mold plate 2, and the fixing block 6 moves with the panel 1, driving the insert 7 to slide along the guide groove 8 and the guide groove 9. When the panel 1 is in the mold closing position, the fixing block 6 and the insert 7 are also in the mold closing position. When the mold is opened after injection molding, the panel 1 first opens with the front mold plate 2. At this time, the front mold plate 2 and the rear mold plate 3 remain in the mold closing state. The panel 1 moves vertically away from the front mold plate 2, and the fixing block 6 moves with the panel 1, driving the insert 7 to slide along the guide groove 8 and the guide groove 9 towards the direction of detachment from the molded injection part. After the panel 1 is in the mold opening position, the front mold plate 2 and the rear mold plate 3 open again. After the front mold plate 2 and the rear mold plate 3 are in the mold opening position, the ejection mechanism ejects the molded injection part out of the rear mold core 5.

[0063] In this embodiment, the injection mold, through the setting of the fixing block 6 and the insert 7, can drive the insert 7 to detach from the molded injection part through the inclined sliding surface when the panel 1 moves the fixing block 6, thus avoiding scratching and dragging the molded injection part during mold opening, thereby improving the yield of the molded injection part. Furthermore, the panel 1 can drive the insert 7 to move simply by moving the fixing block 6, reducing the need for additional core-pulling mechanism arrangements, which helps save space in the mold. The structure is simple and easy to design and implement.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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, wherein the injection mold is a front mold core-pulling mold, characterized in that: The injection mold has a panel (1), a front template (2) slidably disposed below the panel (1), a rear template (3) slidably disposed below the front template (2), a front mold core (4) embedded on the front template (2), and a rear mold core (5) embedded on the rear template (3); The front mold core (4) is fastened to the rear mold core (5), and a cavity (t) is provided between the front mold core (4) and the rear mold core (5); The panel (1) is provided with a fixing block (6), and a insert (7) is slidably provided on the fixing block (6). One end of the fixing block (6) extends into the cavity (t), and the fixing block (6) and the insert (7) abut against each other through an inclined sliding surface. The cavity (t) is provided with a guide groove (8). When the panel (1) slides relative to the front template (2), the fixing block (6) moves with the panel (1) and can drive the insert (7) to slide along the guide groove (8) and detach from the molded injection part.

2. The injection mold according to claim 1, characterized in that: The fixing block (6) is wedge-shaped and has a bevel (s) facing the insert (7).

3. The injection mold according to claim 2, characterized in that: The insert (7) is provided with a guide groove (9), and the fixed block (6) is provided with a guide block (10). When the insert (7) slides along the guide groove (8), the guide block (10) slides in the guide groove (9).

4. The injection mold according to claim 3, characterized in that: The guide groove (9) is a T-shaped groove or a dovetail groove, and the guide block (10) is adapted to the guide groove (9).

5. The injection mold according to claim 1, characterized in that: The insert (7) includes a sliding part (701) and an embedded part (702) provided on the sliding part (701); When the panel (1) slides away from the front template (2), the insert (702) can disengage from the molded injection part.

6. The injection mold according to claim 5, characterized in that: The insert (7) also includes a limiting block (703) disposed on the sliding part (701), and the insert (7) is slidably disposed in the guide groove (8) through the limiting block (703).

7. The injection mold according to claim 6, characterized in that: The front mold core (4) is provided with a baffle (11), which is located above the guide groove (8); When the sliding part (701) slides along the guide groove (8), the limiting block (703) is located in the guide groove (8) and is constrained by the baffle (11) to constrain the insert (7) on the front mold core (4).

8. The injection mold according to any one of claims 1-7, characterized in that: The injection mold also has an opening and closing mechanism (12); The opening and closing mechanism (12) includes a driving member (1201) disposed on the front template (2), and limiting members (1202) respectively disposed between the panel (1) and the front template (2), and between the front template (2) and the rear template (3); The driving member (1201) can drive the panel (1) and the rear template (3) to slide relative to the front template (2), and the limiting member (1202) is used to constrain the sliding stroke of the panel (1) and the rear template (3).

9. The injection mold according to claim 8, characterized in that: The driving component (1201) includes a bidirectional hydraulic cylinder disposed on the front template (2); and / or, The limiting member (1202) between the panel (1) and the front template (2), and the limiting member (1202) between the front template (2) and the rear template (3) are both made of plug screws.

10. The injection mold according to claim 8, characterized in that: The injection mold also has an ejection mechanism located below the rear mold plate (3), which is used to eject the molded injection part from the rear mold core (5).

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