Core pulling structure capable of opening mold step by step
By using a step-opening core-pulling structure and employing inclined guide pillars and sliders, three-stage core pulling is achieved, solving the demolding problem of complex parts molds and improving the demolding efficiency and service life of the mold.
Patent Information
- Application Number
- CN202423261736.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing molds have difficulty achieving single-stage demolding of complex parts during the core-pulling process, resulting in an increase in the number of mold assembly parts, complex design and processing, and a tendency to overlook details, affecting mold accuracy and efficiency.
The core-pulling structure adopts a step-opening mold. Through the combination design of inclined guide pillars and sliders, the mold is opened in three stages. The inclined guide pillars slide in different inclined holes, driving the slider and valve core to move, thus realizing the step-opening core.
To ensure smooth product demolding, avoid sticking to the mold, improve demolding efficiency, reduce mold wear, and extend mold life.
Smart Images
Figure CN223589993U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mould technical field, concretely relates to a core-pulling structure of step by step mold opening. BACKGROUND
[0002] Mould is used for injection, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods to get the desired product in industrial production all kinds of mould and tool, mould is precision tool, has higher request to structural strength, rigidity, surface hardness, surface roughness and machining accuracy, its development level is one of important signs of mechanical manufacturing level,
[0003] For the mould with complex part structure, single core-pulling is often difficult to realize, needs to design multiple core-pulling mechanisms, increases the number of parts of mould combination, makes the design and processing assembly process become complex, is easy to miss details, causes mould error, so needs a core-pulling structure of step by step mold opening to adapt to the core-pulling of complex part structure. UTILITY MODEL CONTENT
[0004] In view of the problems in the above background art, the utility model aims at providing a core-pulling structure of step by step mold opening.
[0005] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:
[0006] A core-pulling structure of step by step mold opening, including inclined guide pillar fixedly installed on A plate and bottom plate fixedly installed on B plate, the bottom plate is equipped with first avoiding slot, the first slide block is slidably installed on the bottom plate upside, the first slide block is equipped with first inclined hole, the second slide block is slidably installed on the first slide block, and the second slide block is equipped with second inclined hole;
[0007] The inclined guide pillar is located in the first avoiding slot, the first inclined hole and the second inclined hole, the diameter size of the first inclined hole is greater than the diameter size of the inclined guide pillar, and the second inclined hole is matched with the gap of the inclined guide pillar;
[0008] The second slide block is fixedly installed with a pressing block, the first valve core is fixedly installed in the pressing block, the pressing block is integrally provided with a buckle groove, the second valve core is placed in the buckle groove, and the first slide block is fixedly installed with a third valve core;
[0009] There is displacement gap between the buckle groove and the second valve core, the first valve core is located in the inside of the second valve core, the second valve core is located in the inside of the third valve core, and the first valve core, the second valve core and the third valve core are coaxial.
[0010] Further limited, the pressing block is provided with four fixing holes, and the four fixing holes are evenly distributed on the end face of the pressing block, and the design ensures the strength of installation and fixation.
[0011] Further limit, the upper and lower ends of the second valve core are provided with parallel planes, which can prevent rotation during movement.
[0012] Further limit, a wear-resistant block is installed between the first slider and the second slider, and the wear-resistant block is provided with a second avoiding groove, which can prevent the frequent movement of the first slider from causing wear on both sides of the first slider and the second slider, thereby affecting the mold precision.
[0013] Further limit, the outer surface of the inclined guide pillar and the inner holes of the first inclined hole and the second inclined hole are all subjected to smooth polishing treatment, which can ensure the sliding effect of the inclined guide pillar and control the distance precision of movement.
[0014] The beneficial effects of the utility model are as follows:
[0015] The structure design of the utility model can ensure smooth demolding of products through three times of core pulling, avoids the problem that the conventional row position structure cannot meet the structure requirement, and adapts to the structure of complex and insufficient space;
[0016] The utility model can gradually open the mold through three times of core pulling, ensure that each part can be smoothly demolded, avoid the phenomenon of mold sticking, and improve the demolding efficiency;
[0017] The reasonable slider design and core pulling mechanism of the utility model can reduce mold wear and prolong the service life of the mold; DETAILED DESCRIPTION OF DRAWINGS
[0018] The utility model can be further illustrated by the non-limiting embodiments shown in the drawings;
[0019] Figure 1 It is a structure schematic view of a core pulling structure embodiment of the utility model gradually opening the mold;
[0020] Figure 2 It is a half-cut structure schematic view of a core pulling structure embodiment of the utility model gradually opening the mold;
[0021] Figure 3 It is a cross-sectional structure schematic view of a core pulling structure embodiment of the utility model gradually opening the mold;
[0022] Figure 4 It is a matching structure schematic view of a pressing block and a second valve core of a core pulling structure embodiment of the utility model gradually opening the mold;
[0023] The main element symbol is explained as follows:
[0024] 1. Inclined guide post; 2. Base plate; 3. First clearance groove; 4. First slider; 5. First inclined hole; 6. Second slider; 7. Second inclined hole; 8. Pressure block; 9. First valve core; 10. Clip groove; 11. Second valve core; 12. Third valve core; 13. Displacement gap; 14. Fixing hole; 15. Plane; 16. Wear-resistant block; 17. Second clearance groove. Detailed Implementation
[0025] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] Example 1:
[0027] like Figures 1-4 As shown, the present invention provides a step-opening core-pulling structure, including an inclined guide post 1 fixedly installed on plate A and a base plate 2 fixedly installed on plate B. The base plate 2 is provided with a first clearance groove 3. A first slider 4 is slidably installed on the upper side of the base plate 2. The first slider 4 is provided with a first inclined hole 5. A second slider 6 is slidably installed on the first slider 4. The second slider 6 is provided with a second inclined hole 7.
[0028] The inclined guide post 1 is located in the first clearance groove 3, the first inclined hole 5 and the second inclined hole 7. The diameter of the first inclined hole 5 is larger than the diameter of the inclined guide post 1, and the second inclined hole 7 is matched with the inclined guide post 1 in terms of clearance.
[0029] The second slider 6 is fixedly installed with a pressure block 8, the pressure block 8 is fixedly installed with a first valve core 9, the pressure block 8 is integrally provided with a buckle groove 10, the buckle groove 10 is placed with a second valve core 11, and the first slider 4 is fixedly installed with a third valve core 12.
[0030] There is a displacement gap 13 between the slot 10 and the second valve core 11. The first valve core 9 is located inside the second valve core 11, and the second valve core 11 is located inside the third valve core 12. The first valve core 9, the second valve core 11 and the third valve core 12 are coaxial.
[0031] In this implementation case, once the injection molding cycle is complete, the system automatically sends a signal to begin mold opening, and plates A and B begin to move away horizontally. Figure 3 Taking the placement direction as an example, because the A plate moves vertically upward, the inclined guide post 1 starts to move vertically upward. Because the second inclined hole 7 matches the inclined guide post 1, the second slider 6, which is slidably mounted on the first slider 4, will move to the right under this movement. The movement distance is limited by the size of the first inclined hole 5. The movement of the second slider 6 pulls the fixed pressure block 8 to move, and then pulls the first valve core 9 fixed by the pressure block 8 to move, thereby realizing the first core pulling.
[0032] When the second slider 6 drives the pressure block 8 to continue moving a distance exceeding the size of the displacement gap 13, the retaining groove 10 drives the second valve core 11 to move, thereby realizing the second core pulling.
[0033] When the inclined guide post 1 moves and contacts the other edge of the first inclined hole 5 and continues to move, the inclined guide post 1 pulls the first slider 4 to move, and the first slider 4 pulls the third valve core 12 to move, thereby realizing the third core pulling.
[0034] In summary, by pulling the core three times, the mold can be opened gradually, ensuring that each part can be smoothly disengaged, avoiding sticking to the mold and improving demolding efficiency.
[0035] Example 2:
[0036] like Figure 4 As shown, the pressure block 8 is provided with four fixing holes 14, which are evenly distributed on the end face of the pressure block 8. This design ensures the strength of the installation and fixing.
[0037] In this implementation, the number of fixing holes 14 can be changed according to the requirements. Setting fixing holes at the corner of the pressure block 8 can also ensure that the pressure block 8 is installed vertically on the second slider 6, thereby ensuring that the pulling direction does not deviate.
[0038] Example 3:
[0039] like Figure 4 As shown, the upper and lower ends of the second valve core 11 are provided with parallel planes 15. This design can prevent the problem of rotation along the axis during movement.
[0040] In this implementation case, the width of the plane is not limited, but the levelness and roughness must be guaranteed to ensure that the pulling direction does not deviate and that the sliding is smooth.
[0041] Example 4:
[0042] like Figure 2 , Figure 3 As shown, a wear-resistant block 16 is installed between the first slider 4 and the second slider 6. The wear-resistant block 16 is provided with a second clearance groove 17. This design prevents the frequent movement of the first slider 4 from causing wear on both sides of the first slider 4 and the second slider 6, thereby affecting the mold accuracy.
[0043] In this implementation case, the material of the wear-resistant block 16 is selected according to the requirements, the thickness is changed according to the gap between the first slider 4 and the second slider 6, and the fixing method is to install it with countersunk holes.
[0044] Example 5:
[0045] like Figure 1 ,Figure 2 、 Figure 3 As shown in FIG. 1, the outer surface of the inclined guide pillar 1 and the inner hole of the first inclined hole 5 and the second inclined hole 7 are all polished, which ensures the sliding effect of the inclined guide pillar 1 and controls the distance precision of the movement.
[0046] In the embodiment, the diameter of the inclined guide pillar 1 and the hole diameter of the first inclined hole 5 and the second inclined hole 7 can be considered according to the specific situation, and the roughness can be adjusted according to the selected material, so as to ensure the movement precision and the service life and improve the economy.
[0047] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the utility model should be covered by the claims of the utility model.
Claims
1. A core-pulling structure for progressive mold opening, comprising an inclined guide post (1) fixedly mounted on plate A and a base plate (2) fixedly mounted on plate B, wherein the base plate (2) is provided with a first clearance groove (3), characterized in that: A first slider (4) is slidably mounted on the upper side of the base plate (2). The first slider (4) is provided with a first oblique hole (5). A second slider (6) is slidably mounted on the first slider (4). The second slider (6) is provided with a second oblique hole (7). The inclined guide post (1) is located in the first clearance groove (3), the first inclined hole (5) and the second inclined hole (7). The diameter of the first inclined hole (5) is larger than the diameter of the inclined guide post (1), and the second inclined hole (7) is matched with the inclined guide post (1) in terms of gap. The second slider (6) is fixedly mounted with a pressure block (8), and the pressure block (8) is fixedly mounted with a first valve core (9). The pressure block (8) is integrally provided with a snap groove (10), and the snap groove (10) is placed with a second valve core (11). The first slider (4) is fixedly mounted with a third valve core (12). There is a displacement gap (13) between the buckle groove (10) and the second valve core (11). The first valve core (9) is located inside the second valve core (11), and the second valve core (11) is located inside the third valve core (12). The first valve core (9), the second valve core (11) and the third valve core (12) are coaxial.
2. The core-pulling structure with progressive mold opening according to claim 1, characterized in that: The pressure block (8) is provided with four fixing holes (14), which are evenly distributed on the end face of the pressure block (8).
3. The core-pulling structure with progressive mold opening according to claim 2, characterized in that: The second valve core (11) has parallel planes (15) at its upper and lower ends.
4. The core-pulling structure with progressive mold opening according to claim 3, characterized in that: A wear-resistant block (16) is installed between the first slider (4) and the second slider (6), and the wear-resistant block (16) is provided with a second clearance groove (17).
5. The core-pulling structure with progressive mold opening according to claim 4, characterized in that: The outer surface of the inclined guide post (1) and the inner holes of the first inclined hole (5) and the second inclined hole (7) are all smoothed by grinding.