Separating device for upper mold body and lower mold body of injection mold
Through the design of the staging and ejection components, the problem of errors in mold opening steps and difficulty in mold removal of injection molds is solved, and sequential mold opening and efficient ejection are achieved, reducing production costs.
Patent Information
- Application Number
- CN202422147629.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing injection molds are prone to step errors when opening the mold, resulting in mold damage or increased production costs, especially when products with difficult demoulding, requiring additional ejection devices, which increases production costs.
The hierarchical separation components and ejection components are adopted, including telescopic push rods, side frames, push rods, positioning blocks, horizontal plates, cross ejection frames and cross limit frames. By separating the upper and lower molds step by step, the mold opening is achieved sequentially, and the product can be ejected without additional ejection devices.
Sequential mold opening is achieved, which avoids mold damage, reduces production costs, improves ejection efficiency, and avoids product damage.
Smart Images
Figure CN223085351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and particularly relates to a separating device for the upper and lower mold bodies of an injection mold. Background Art
[0002] An injection mold is a tool for producing plastic products; it is also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some parts with complex shapes. Specifically, it means that the molten plastic heated is injected into the mold cavity under high pressure by an injection molding machine. After cooling and solidifying, the formed product is obtained. The injection mold consists of a moving mold and a fixed mold. The moving mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. When injection molding, the moving mold and the fixed mold are closed to form a gating system and a cavity. When opening the mold, the moving mold and the fixed mold are separated to take out the plastic product.
[0003] When the existing mold is opened, the mold needs to be opened in a certain order. Especially for precision molds, there are many processes. Since the shapes of plastic products are diverse, the mold needs to be opened in a certain step when opening the mold. If the opening steps are incorrect, the mold that is opened first may not be removed, blocking the mold that is opened later, resulting in incorrect mold opening and damage to the plastic product.
[0004] Moreover, when the existing mold is in use, when injecting some products that are not easy to demold, it is not convenient for the injected product to fall off when opening the mold. Only by additionally adding an ejection device to eject the product, but this method additionally adds an output end and increases the production cost. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a separating device for the upper and lower mold bodies of an injection mold to solve the problems put forward in the above background art.
[0006] To solve the above technical problems, the technical solution adopted by the utility model is:
[0007] A separating device for the upper and lower mold bodies of an injection mold includes an upper base, a lower base, an upper mold, and a lower mold. A grading separation component is arranged on one side of the lower mold, and the grading separation component is used for gradually separating the upper base, the lower base, the upper mold, and the lower mold.
[0008] A cavity is opened inside the lower mold, and an ejection component is arranged inside the cavity. The ejection component includes a cross ejection frame and a cross limiting frame. A top spring is fixedly connected to the bottom surface of the cross limiting frame, and an internal cross groove adapted to the cross ejection frame is opened at the bottom of the inner wall of the cavity.
[0009] The hierarchical separation component includes a side frame and a push rod slidably connected to the inner wall of the side frame. A positioning block is fixedly connected to the outer wall of the push rod near the top end. A cross plate is fixedly connected to the bottom surface of the push rod, and a telescopic push rod is fixedly connected to the bottom surface of the push rod.
[0010] With the above technical solution, in this solution, the telescopic push rod is started, so that the telescopic push rod pushes the push rod to slide upward on the inner wall of the side frame. At this time, the upper base starts to move upward when the push rod moves upward. When the push rod moves upward a certain distance, the cross plate on the push rod contacts the bottom surface of the side frame. As the push rod continues to move upward, the cross plate drives the side frame to move upward, and the side frame drives the upper mold to move upward while moving upward, thereby realizing sequential mold opening.
[0011] A further improvement of the technical solution of the present utility model is that one side of the side frame is fixedly connected to one side of the upper mold, one side of the positioning block is fixedly connected to one side of the upper base, and the bottom end of the telescopic push rod is fixedly connected to the upper surface of the lower base.
[0012] A further improvement of the technical solution of the present utility model is that the outer wall of the cross-shaped ejection frame is inserted into the inner wall of the built-in cross-shaped groove. A guiding cross-shaped groove communicating with the built-in cross-shaped groove is opened on the upper surface of the lower mold. The outer wall of the cross-shaped limiting frame is adaptively inserted into the inner wall of the guiding cross-shaped groove, and a guiding rod is fixedly connected to the bottom surface of the cross-shaped limiting frame.
[0013] With the above technical solution, the cross-shaped ejection frame is of a cross structure. When ejecting the product, it can increase the ejection area, reduce the local pressure between the product and the product, improve the ejection efficiency, and avoid damaging the product during the ejection process.
[0014] A further improvement of the technical solution of the present utility model is that a guiding hole is opened at the bottom of the inner wall of the guiding cross-shaped groove, and the bottom end of the guiding rod is inserted into the inner wall of the guiding hole.
[0015] With the above technical solution, when the cross-shaped ejection frame is driven by the cross-shaped limiting frame to perform ejection, the guiding rod slides on the inner wall of the guiding hole to limit the upward movement path of the cross-shaped limiting frame, avoid its dislocation problem, and at the same time facilitate the subsequent reset work of the cross-shaped ejection frame.
[0016] A further improvement of the technical solution of the present utility model is that one end of the cross-shaped ejection frame is fixedly connected to one end of the cross-shaped limiting frame.
[0017] With the above technical solution, when the cross-shaped limiting frame moves upward, it will drive the cross-shaped ejection frame to move upward on the inner wall of the built-in cross-shaped groove and push the finished product inside the cavity upward.
[0018] A further improvement of the technical solution of the present utility model lies in that: the number of the grading and separating components is two groups, and the two groups of the grading and separating components are symmetrically distributed on both sides of the lower mold.
[0019] A further improvement of the technical solution of the present utility model lies in that: a first injection hole is provided on the upper surface of the upper base, and a second injection hole is provided on the upper surface of the upper mold.
[0020] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:
[0021] 1. The present utility model provides a separating device for the upper and lower die bodies of an injection mold. By using the cooperation of the telescopic push rod, the side frame, the push rod, the positioning block and the cross plate in the grading and separating component, after the upper base is opened to an appropriate degree, the upper mold can be opened, so as to achieve sequential mold opening and avoid incorrect mold opening steps.
[0022] 2. The present utility model provides a separating device for the upper and lower die bodies of an injection mold. By using the cooperation of the cross-shaped ejector frame, the cross-shaped limiting frame, the ejector spring and the guide rod in the ejecting component, after the upper mold is opened, the product can be ejected without adding an additional ejecting device, which is convenient for people to eject the product, reduces the production cost, and at the same time, has a simple structure and is convenient for repeated use. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a structural schematic diagram of the present utility model;
[0024] Figure 2 is a separating structural schematic diagram of the present utility model;
[0025] Figure 3 is a structural schematic diagram of the grading and separating component of the present utility model;
[0026] Figure 4 is a structural schematic diagram of the lower mold of the present utility model;
[0027] Figure 5 is a structural schematic diagram of the ejecting component of the present utility model.
[0028] In the figure: 1. upper base; 2. lower base; 3. upper mold; 4. lower mold; 5. first injection hole; 6. grading and separating component; 7. second injection hole; 8. telescopic push rod; 9. side frame; 10. push rod; 11. positioning block; 12. cavity; 13. ejecting component; 14. guiding cross groove; 15. internal cross groove; 16. cross-shaped ejector frame; 17. cross-shaped limiting frame; 18. ejector spring; 19. guide rod; 20. guide hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] The following further describes the present utility model in detail with reference to the embodiments:
[0031] Embodiment 1
[0032] As Figures 1-5 shown, the present utility model provides a separation device for the upper and lower mold bodies of an injection mold, including an upper base 1, a lower base 2, an upper mold 3, and a lower mold 4. A grading separation assembly 6 is provided on one side of the lower mold 4, and the grading separation assembly 6 is used to gradually separate the upper base 1, the lower base 2, the upper mold 3, and the lower mold 4.
[0033] A cavity 12 is formed inside the lower mold 4, and an ejection assembly 13 is arranged inside the cavity 12. The ejection assembly 13 includes a cross ejection frame 16 and a cross limiting frame 17. A bottom surface of the cross limiting frame 17 is fixedly connected to an ejection spring 18, and an internal cross groove 15 adapted to the cross ejection frame 16 is formed at the bottom of the inner wall of the cavity 12.
[0034] The grading separation assembly 6 includes a side frame 9 and a push rod 10 slidably connected to the inner wall of the side frame 9. A positioning block 11 is fixedly connected to an outer wall of the push rod 10 near the top end. A cross plate is fixedly connected to the bottom surface of the push rod 10, and a telescopic push rod 8 is fixedly connected to the bottom surface of the push rod 10.
[0035] One side of the side frame 9 is fixedly connected to one side of the upper mold 3, one side of the positioning block 11 is fixedly connected to one side of the upper base 1, and a bottom end of the telescopic push rod 8 is fixedly connected to an upper surface of the lower base 2.
[0036] The number of the grading separation assemblies 6 is two groups, and the two groups of grading separation assemblies 6 are symmetrically distributed on both sides of the lower mold 4.
[0037] A first injection hole 5 is formed on an upper surface of the upper base 1, and a second injection hole 7 is formed on an upper surface of the upper mold 3.
[0038] Embodiment 2
[0039] As Figures 1-5As shown in the figure, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the outer wall of the cross-shaped ejection frame 16 is inserted into the inner wall of the built-in cross-shaped groove 15, and a guiding cross-shaped groove 14 communicating with the built-in cross-shaped groove 15 is opened on the upper surface of the lower mold 4. The outer wall of the cross-shaped limiting frame 17 is adaptively inserted into the inner wall of the guiding cross-shaped groove 14, and a guiding rod 19 is fixedly connected to the bottom surface of the cross-shaped limiting frame 17.
[0040] The cross-shaped ejection frame 16 is of a cross-shaped structure. When ejecting the product, it can increase the ejection area, reduce the local pressure between the product and itself, improve the ejection efficiency, and avoid damaging the product during the ejection process.
[0041] During the process of the upper mold 3 resetting and closing with the lower mold 4, the cross-shaped limiting frame 17 is pressed by the upper mold 3, and then the ejection spring 18 is compressed again and fits and resets with the inner wall of the guiding cross-shaped groove 14. When the cross-shaped limiting frame 17 resets, it drives the cross-shaped ejection frame 16 to reset. At this time, the injection work can be carried out through the first injection hole 5 and the second injection hole 7.
[0042] A guiding hole 20 is opened at the bottom of the inner wall of the guiding cross-shaped groove 14, and the bottom end of the guiding rod 19 is inserted into the inner wall of the guiding hole 20. When the cross-shaped ejection frame 16 is driven by the cross-shaped limiting frame 17 to eject, the guiding rod 19 slides on the inner wall of the guiding hole 20 to limit the upward movement path of the cross-shaped limiting frame 17, avoid its dislocation problem, and facilitate the subsequent reset work of the cross-shaped ejection frame 16.
[0043] One end of the cross-shaped ejection frame 16 is fixedly connected to one end of the cross-shaped limiting frame 17.
[0044] Next, specifically describe the working principle of the separation device of the upper and lower die bodies of this injection mold.
[0045] As Figures 1-5 shown, when in use, start the telescopic push rod 8, so that the telescopic push rod 8 pushes the push rod 10 to slide upward on the inner wall of the side frame 9. At this time, during the upward movement of the push rod 10, it drives the upper base 1 to move upward. When the push rod 10 moves upward a certain distance, at this time, the cross plate on the push rod 10 contacts the bottom surface of the side frame 9. As the push rod 10 continues to move upward, the cross plate drives the side frame 9 to move upward, and when the side frame 9 moves upward, it drives the upper mold 3 to move upward, thus realizing sequential mold opening.
[0046] When the upper mold 3 separates from the lower mold 4, the pressure of the upper mold 3 on the cross-shaped limit frame 17 gradually weakens. At this time, the cross-shaped limit frame 17 gradually moves upward under the reset force of the ejection spring 18. During the upward movement of the cross-shaped limit frame 17, it will drive the cross-shaped ejection frame 16 to move upward along the inner wall of the built-in cross-shaped groove 15, and push the finished product inside the cavity 12 upward and out. Without adding an additional ejection device, the product can be ejected, which is convenient for people to eject the product and reduces the production cost.
[0047] When the upper mold 3 is reset and closes with the lower mold 4, the cross-shaped limit frame 17 will compress the ejection spring 18 again under the pressure exerted by the upper mold 3, and then fit and reset with the inner wall of the guiding cross-shaped groove 14. When the cross-shaped limit frame 17 resets, it will drive the cross-shaped ejection frame 16 to reset. At this time, injection molding work can be carried out through the first injection hole 5 and the second injection hole 7.
[0048] The cross-shaped ejection frame 16 is in a cross shape. When ejecting the product, it can increase the ejection area, reduce the local pressure between the product and itself, improve the ejection efficiency, and avoid damaging the product during the ejection process.
[0049] When the cross-shaped ejection frame 16 is driven by the cross-shaped limit frame 17 to eject, the guide rod 19 slides along the inner wall of the guide hole 20 to limit the upward movement path of the cross-shaped limit frame 17, prevent it from being misaligned, and at the same time facilitate the subsequent reset work of the cross-shaped ejection frame 16.
[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of other identical elements in the process, method, article or device including the said element. The above has generally described the present invention in detail, but based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A separating device for the upper and lower die bodies of an injection mold, comprising an upper base (1), a lower base (2), an upper mold (3) and a lower mold (4), characterized in that: One side of the lower mold (4) is provided with a grading and separating assembly (6), and the grading and separating assembly (6) is used to gradually separate the upper base (1), the lower base (2), the upper mold (3) and the lower mold (4); A cavity (12) is formed inside the lower mold (4), and an ejection assembly (13) is arranged inside the cavity (12). The ejection assembly (13) includes a cross ejection frame (16) and a cross limiting frame (17). A bottom surface of the cross limiting frame (17) is fixedly connected with an ejection spring (18), and an inner cross groove (15) adapted to the cross ejection frame (16) is formed at the bottom of the inner wall of the cavity (12); The grading and separating assembly (6) includes a side frame (9) and a push rod (10) slidably connected to the inner wall of the side frame (9). A positioning block (11) is fixedly connected to an outer wall of the push rod (10) near the top end. A cross plate is fixedly connected to a bottom surface of the push rod (10), and a telescopic push rod (8) is fixedly connected to the bottom surface of the push rod (10).
2. The separating device for the upper and lower die bodies of an injection mold according to claim 1, characterized in that: One side of the side frame (9) is fixedly connected with one side of the upper mold (3). One side of the positioning block (11) is fixedly connected with one side of the upper base (1). A bottom end of the telescopic push rod (8) is fixedly connected with an upper surface of the lower base (2).
3. The separation device for the upper and lower die bodies of an injection mold according to claim 1, characterized in that: An outer wall of the cross ejection frame (16) is inserted into an inner wall of the inner cross groove (15). A guiding cross groove (14) communicating with the inner cross groove (15) is formed on an upper surface of the lower mold (4). An outer wall of the cross limiting frame (17) is adaptively inserted into an inner wall of the guiding cross groove (14). A guiding rod (19) is fixedly connected to a bottom surface of the cross limiting frame (17).
4. The separating device for the upper and lower die bodies of an injection mold according to claim 3, wherein: A guiding hole (20) is formed at the bottom of the inner wall of the guiding cross groove (14). A bottom end of the guiding rod (19) is inserted into an inner wall of the guiding hole (20).
5. The separating device for the upper and lower die bodies of an injection mold according to claim 1, wherein: One end of the cross ejection frame (16) is fixedly connected with one end of the cross limiting frame (17).
6. The separating device for the upper and lower die bodies of an injection mold according to claim 1, characterized in that: The number of the grading and separating assemblies (6) is two, and the two grading and separating assemblies (6) are symmetrically distributed on two sides of the lower mold (4).
7. A separating device for the upper and lower die bodies of an injection mold according to claim 1, characterized in that: A first injection hole (5) is formed on an upper surface of the upper base (1), and a second injection hole (7) is formed on an upper surface of the upper mold (3).