Push plate secondary ejection die

Abstract

The utility model belongs to mould technical field especially relates to a kind of push plate secondary ejection mould, including fixed plate, the fixed plate inside is equipped with sprue bushing, the sprue bushing top is equipped with locating ring, the fixed plate bottom is fixedly installed with fixed die kernel fixed plate, the fixed die kernel fixed plate bottom is fixedly installed with fixed die kernel, the fixed die kernel fixed plate outer side four quarters are fixedly installed with strong pull rod, the fixed die kernel fixed plate bottom is installed with wedge tight block, the fixed die kernel fixed plate inside upper end is installed with inclined guide pillar, the strong pull rod bottom is installed with movable plate.The push plate secondary ejection mould, by twice ejection action, by movable die kernel fixed push plate secondary ejection mould first using movable die kernel fixed push plate to make product to separate from core, then through ejector pin alone ejection ensure product completely unmould, avoid the problem that possibly caused by once strong ejection is pulled or unmould not completely, prevent product to be hit by ejector pin, avoid product to separate from cavity, unmould is convenient.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a push plate secondary ejection mold. Background Technology

[0002] A mold is a tool that can solidify heated raw materials into products of specific shapes and sizes under the action of external force. A mold includes a moving mold and a fixed mold, and the fixed mold and the moving mold have pre-opened cavities. The heated raw materials are introduced into the cavities. The moving mold and the fixed mold are closed so that the raw materials can be squeezed and solidified to form products. Many medical products are also usually made using molds. Secondary ejection molds can improve the ejection efficiency of products.

[0003] Existing secondary ejection molds have poor stability during use and are prone to displacement during mold opening and clamping. This not only reduces the molding quality of the product but also lowers the yield rate. Furthermore, the molds are heavy and inconvenient for workers to carry when moving them.

[0004] For example, the secondary ejection mold for a medical product disclosed in announcement number CN217573857U can help fix the mold to prevent mold displacement. It is convenient for staff to carry when moving, which can improve the stability of the mold during mold opening and injection, prevent mold misalignment, improve the product yield, and facilitate staff to move and carry it after use.

[0005] However, when the product has many and deep holes, it is difficult to fill the injection process completely due to the flow obstruction of the pinholes. This can easily cause internal shrinkage of the product, resulting in a low yield. After the product is formed, the ejection stage is also affected by the large number and depth of the mold core, which makes the mold clamping force very large. If the ejector pin is used alone to eject the product, the product will be pierced by the ejector pin and will not be able to leave the cavity.

[0006] Therefore, we urgently need to provide a push plate secondary ejection mold. Utility Model Content

[0007] The purpose of this invention is to provide a pusher plate secondary ejection mold to solve the problem mentioned in the background art where the product is pierced by the ejector pin, causing the product to be unable to leave the cavity.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a push-plate secondary ejection mold, comprising a fixed template, a sprue sleeve installed inside the fixed template, a positioning ring installed on the top of the sprue sleeve, a fixed mold core fixing plate fixedly installed at the bottom of the fixed template, a fixed mold core fixedly installed at the bottom of the fixed mold core fixing plate, strong release rods fixedly installed around the outer perimeter of the fixed mold core fixing plate, a wedge block installed at the bottom of the fixed mold core fixing plate, an inclined guide post installed at the upper end inside the fixed mold core fixing plate, a movable template installed at the bottom of the strong release rods, and a movable template with its top perimeter... The mold is equipped with mold feet, a moving mold core fixing plate is installed on the top of the mold feet, a moving mold core fixing plate is installed on the top of the moving mold core fixing plate, a moving mold core is installed on the top of the moving mold core fixing plate, a support column is installed between the moving mold core fixing plate and the moving mold plate, an ejector plate is installed on the outside of the support column, an ejector back plate is installed below the ejector plate, a strong release limiting rod is installed inside the moving mold core fixing plate, a reset rod is installed on the top of the ejector plate, a slider pressure block is installed on the top of the moving mold core fixing plate, and an inclined slider is installed on the top of the moving mold core fixing plate.

[0009] Preferably, the inclined slider has a guide hole inside, one end of the inclined guide post is installed inside the fixed mold core plate, and the other end is inserted into the guide hole of the inclined slider.

[0010] Preferably, one end of the reset rod is fixed on the ejector plate, and the other end contacts the bottom of the moving mold core fixing plate when the mold is closed, so as to realize the reset of the ejection mechanism.

[0011] Preferably, the slider pressure block is fixed to the moving mold core fixing push plate with screws to restrict the movement of the slider.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This push plate ejection mold uses two ejection actions. The moving mold core fixes the push plate to eject the mold twice. First, the moving mold core fixes the push plate to make the product separate from the core. Then, the ejector pin ejects the product separately to ensure that the product is completely demolded. This avoids the problem of tearing or incomplete demolding that may be caused by a single forced ejection. It also prevents the product from being punctured by the ejector pin and avoids the product being unable to leave the cavity, making demolding easier.

[0014] 2. This pusher plate secondary ejection mold achieves lateral core pulling through the cooperation of inclined guide pillars and inclined sliders. It can meet the molding needs of various products with side concave or side hole structures, eliminating the need to frequently change the entire mold for different products, reducing mold development costs, and improving the versatility and application range of the mold. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a first sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a second sectional view of the overall structure of this utility model;

[0018] Figure 4 This is the third sectional view of the overall structure of this utility model.

[0019] In the diagram: 1. Fixed mold plate; 2. Sprue bushing; 3. Locating ring; 4. Fixed mold core fixing plate; 5. Fixed mold core; 6. Forced release pull rod; 7. Wedge block; 8. Angled guide pillar; 9. Moving mold plate; 10. Mold foot; 11. Moving mold core fixing plate; 12. Moving mold core fixing push plate; 13. Moving mold core; 14. Support pillar; 15. Ejector plate; 16. Ejector back plate; 17. Forced release limit rod; 18. Reset rod; 19. Slider pressure block; 20. Angled slider. Detailed Implementation

[0020] 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.

[0021] Example 1:

[0022] Due to the existing technology, the ejector pin can puncture the product, preventing it from detaching from the mold cavity. Please refer to [link / reference needed]. Figures 1-4This embodiment provides a push-plate secondary ejection mold that prevents the product from being punctured by ejector pins, ensuring the product can easily detach from the mold cavity and facilitating demolding. The push-plate secondary ejection mold includes a fixed mold plate 1, with a sprue sleeve 2 installed inside. The sprue sleeve 2 guides the molten plastic into the mold cavity. A positioning ring 3 is installed on the top of the sprue sleeve 2, which engages with the positioning holes on the injection molding machine to ensure accurate mold positioning. A fixed mold core fixing plate 4 is fixedly installed at the bottom of the fixed mold plate 1, fixing the fixed mold core 5 and ensuring its positional accuracy. The fixed mold core 5 is also fixedly installed at the bottom of the fixed mold core fixing plate 4. A strong release rod 6 is fixedly installed around the outer perimeter of the fixed mold core plate 4. A wedge block 7 is installed at the bottom of the fixed mold core plate 4. An inclined guide post 8 is installed at the upper end of the interior of the fixed mold core plate 4. A moving mold plate 9 is installed at the bottom of the strong release rod 6. Mold feet 10 are provided around the top perimeter of the moving mold plate 9. A moving mold core fixing plate 11 is installed on the top of the mold feet 10. A moving mold core fixing plate 12 is installed on the top of the moving mold core fixing plate 11. The moving mold core 13 is fixed by the moving mold core fixing plate 12 and can be pushed to perform the demolding action. A moving mold core 13 is mounted on the top of plate 12. A support column 14 is installed between the moving mold core fixing plate 11 and the moving plate 9. An ejector plate 15 is mounted on the outside of the support column 14. An ejector back plate 16 is mounted below the ejector plate 15. An ejector demolding part is mounted on the top of the ejector plate 15. The ejector back plate 16 provides support for the ejector plate 15. The two work together to complete the demolding action. A strong ejection limit rod 17 is installed inside the moving mold core fixing push plate 12. A reset rod 18 is mounted on the top of the ejector plate 15. The reset rod 18... One end is fixed on the ejector plate 15, and the other end contacts the bottom of the moving mold core fixing plate 11 when the mold is closed, so as to realize the reset of the ejection mechanism. The top of the moving mold core fixing push plate 12 is equipped with a slider pressure block 19, which is fixed on the moving mold core fixing push plate 12 with screws to restrict the movement of the slider. The top of the moving mold core fixing push plate 12 is equipped with an inclined slider 20, and the inclined slider 20 has a guide hole inside. One end of the inclined guide post 8 is installed inside the fixed mold core fixing plate 4, and the other end is inserted into the guide hole opened in the inclined slider 20.

[0023] During use, the fixed mold plate 1 and the moving mold plate 9 are closed, and the molten plastic is injected into the cavity through the sprue sleeve 2, where it cools and solidifies to form the product. At this time, the ejector plate 15, the ejector back plate 16, and the moving mold core fixed push plate 12 are in their initial positions. After the injection molding machine opens the mold, the ejection mechanism pushes the ejector back plate 16, which in turn moves the ejector plate 15. The ejector plate 15 pushes the moving mold core fixed push plate 12 forward together. Under the combined action of the moving mold core fixed push plate 12 and the ejector plate 15, the product detaches from the moving mold core 13. As ejection continues, the moving mold core fixed push plate 12... Plate 12 is restricted by the forced release limit rod 17 and stops moving. Ejector plate 15 and ejector back plate 16 continue to move forward. The ejector pins act alone to completely eject the product from the moving mold core fixed push plate 12, so that it completely leaves the mold and completes the final demolding. Through two ejection actions, the moving mold core fixed push plate 12 ejects the product from the mold core in two steps. First, the moving mold core fixed push plate 12 is used to make the product leave the mold core. Then, the ejector pins eject the product alone to ensure that the product is completely demolded. This avoids the problem of tearing or incomplete demolding that may be caused by a single forced ejection, thus facilitating demolding.

[0024] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A push-plate secondary ejection mold, comprising a fixed template (1), characterized in that: The fixed template (1) is equipped with a sprue sleeve (2), and a positioning ring (3) is installed on the top of the sprue sleeve (2). The fixed template (1) is fixedly equipped with a fixed mold core fixing plate (4) at the bottom. The fixed mold core fixing plate (4) is fixedly equipped with a fixed mold core (5) at the bottom. The fixed mold core fixing plate (4) is fixedly equipped with a strong release rod (6) around its outer perimeter. The fixed mold core fixing plate (4) is equipped with a wedge block (7) at its bottom. The fixed mold core fixing plate (4) is equipped with an inclined guide post (8) at its upper interior. The fixed mold core fixing plate (6) is equipped with a moving template (9) at its bottom. The moving template (9) is equipped with mold feet (10) around its top perimeter. The mold feet (10) are equipped with a moving mold core fixing plate (11) at their top. A moving mold core fixing plate (12) is installed on the top of the mold core fixing plate (11). A moving mold core (13) is installed on the top of the moving mold core fixing plate (12). A support column (14) is installed between the moving mold core fixing plate (11) and the moving template (9). An ejector plate (15) is installed on the outside of the support column (14). An ejector back plate (16) is installed below the ejector plate (15). A strong release limit rod (17) is installed inside the moving mold core fixing plate (12). A reset rod (18) is installed on the top of the ejector plate (15). A slider pressure block (19) is installed on the top of the moving mold core fixing plate (12). An inclined slider (20) is installed on the top of the moving mold core fixing plate (12).

2. The push-plate secondary ejection mold according to claim 1, characterized in that: The inclined slider (20) has a guide hole inside. One end of the inclined guide post (8) is installed inside the fixed mold core plate (4), and the other end is inserted into the guide hole of the inclined slider (20).

3. The push-plate secondary ejection mold according to claim 1, characterized in that: One end of the reset rod (18) is fixed on the ejector plate, and the other end contacts the bottom of the moving mold core fixing plate (11) when the mold is closed.

4. The push-plate secondary ejection mold according to claim 1, characterized in that: The slider pressure block (19) is fixed to the moving mold core fixing push plate (12) with screws.

Images