Secondary demolding device
By designing a secondary demolding device, the mold core and mold base are automatically separated using the cooperation of ejector pins and push plates, solving the problem of finished product sticking in injection molds and improving production efficiency.
Patent Information
- Application Number
- CN202423248178.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Injection molds with special grooves are prone to sticking to the mold core, requiring manual demolding and affecting production efficiency.
Design a secondary demolding device that uses an ejector pin base plate to pull the mold base down, a push plate to pull the mold core down, and a stop head to limit the downward movement distance of the mold base. Combined with a limiting head to control the separation of the mold core and the mold base, automatic demolding is achieved.
It achieves automatic separation of finished product and mold core, improves production efficiency, avoids manual operation, has a simple structure, and is easy to promote and apply.
Smart Images
Figure CN223618160U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, specifically to a secondary demolding device. Background Technology
[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding include high production speed and efficiency, automated operation, a wide variety of colors and shapes (from simple to complex), and sizes ranging from large to small. It also produces precise dimensions, facilitates product updates and replacements, and can create complex shapes. Injection molding is suitable for mass production and molding processes involving complex shapes.
[0003] For example, CN216968556U discloses a two-stage ejection demolding device, comprising: a base plate, a first ejection mechanism, and a second ejection mechanism; the first ejection mechanism is used to perform the first ejection of the product to be ejected; the second ejection mechanism is used to perform the second ejection of the product to be ejected; during the first ejection, both the first ejection mechanism and the second ejection mechanism are ejected, and after moving a first distance, the first ejection mechanism stops ejecting, and the second ejection mechanism performs the second ejection until the product to be demolded is ejected;
[0004] The aforementioned application employs a two-stage ejection method. In the first ejection stage, the push plate ejects along with the product, protecting the product. The actual demolding process occurs in the second ejection stage. This reduces the distance the product needs to move for demolding, thus decreasing the pressure on the product and lowering the risk of deformation during extrusion demolding, increasing the success rate of demolding. It also eliminates the need for mold release agents, reducing production costs. However, for injection molds with grooved structures, the finished product is prone to sticking to the mold core, requiring manual demolding and affecting production efficiency. Therefore, there is an urgent market need to develop a two-stage demolding device to help solve these existing problems. Utility Model Content
[0005] The purpose of this invention is to provide a secondary demolding device to solve the problem mentioned in the background art that the finished product of the special structure with grooves in the injection mold is easy to stick to the mold core, requiring manual demolding and affecting production efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a secondary demolding device, comprising an ejector plate and a mold base, wherein a first ejector pin is disposed on the ejector plate and the first ejector pin is connected to the mold base, a mold core is disposed on the mold base, an ejector base plate is disposed below the ejector plate, the mold base and the ejector base plate are both connected to the first ejector pin, a push plate is disposed below the ejector base plate, a second ejector pin is connected between the mold core and the push plate, a stop is slidably connected to the outer side of the first ejector pin, the first ejector pin and the second ejector pin both penetrate the ejector plate, and the second ejector pin penetrates the ejector base plate.
[0007] Through the above technical solution, the ejector plate pulls the mold base down through the first ejector pin, and the push plate pulls the mold core down through the second ejector pin. The mold core and the mold base can be separated. A stop is provided on the outside of the first ejector pin, which is located between the mold base and the ejector plate, thereby limiting the downward movement distance of the mold base. This allows the mold core to move down and separate from the mold base, forming a secondary demolding structure. This allows the finished product to be completely separated from the mold core without manual separation, thus improving work efficiency.
[0008] In a preferred embodiment, the present invention can be further configured such that: both sides of the ejector panel, ejector base plate and push plate are provided with latches, a limiter is slidably connected inside the latches, a limit head is provided on the limiter, and the ejector panel is located above the limit head.
[0009] The above technical solution limits the downward stroke of the ejector plate, ejector base plate and push plate, so that the push plate and ejector base plate will not move down too much, thus preventing the mold core from completely separating from the mold base. At the same time, the limiting head is used to separate the ejector plate and ejector base plate, thereby completing the separation of the mold base and mold core. The structure is simple and easy to promote and apply.
[0010] In a preferred embodiment, the present invention can be further configured such that an injection tube is connected between the mold base and the push plate.
[0011] In a preferred embodiment, the present invention can be further configured such that a top head is provided above the stop head.
[0012] The above technical solution utilizes the top head setting to support the ejector plate.
[0013] In a preferred embodiment, the present invention can be further configured such that the lower surface of the push plate is provided with a connecting bolt for connecting the second ejector pin.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. In this utility model, the ejector base plate pulls the mold base downward through the first ejector pin, and the push plate pulls the mold core downward through the second ejector pin. The mold core and the mold base can be separated. Furthermore, a stop is provided on the outside of the first ejector pin, which is located between the mold base and the ejector plate, thereby limiting the downward movement distance of the mold base. This allows the mold core to move downward and separate from the mold base, forming a secondary demolding structure. This enables the finished product to be completely separated from the mold core without manual separation, thus improving work efficiency.
[0016] 2. The limiting head of this utility model restricts the downward stroke of the ejector plate, ejector base plate and push plate, so that the push plate and ejector base plate will not move down too much, avoiding the mold core from completely separating from the mold base. At the same time, the limiting head is used to separate the ejector plate and ejector base plate, thereby completing the separation of the mold base and mold core. The structure is simple and easy to promote and apply. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a secondary demolding device according to the present invention;
[0018] Figure 2 This is a front view of a secondary demolding device according to the present invention;
[0019] Figure 3 This is a bottom view of a secondary demolding device according to the present invention;
[0020] Figure 4 This is a top view of a secondary demolding device according to the present invention.
[0021] In the diagram: 1. Ejector plate; 2. Buckle; 3. Ejector base plate; 4. Push plate; 5. Mold base; 6. Mold core; 7. Stop; 8. Ejector head; 9. First ejector pin; 10. Injection tube; 11. Second ejector pin; 12. Limit head; 13. Limiter; 14. Connecting bolt. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0025] Please see Figure 1 and Figure 2 An embodiment of this utility model provides a secondary demolding device, including an ejector plate 1 and a mold base 5. A first ejector pin 9 is provided on the ejector plate 1 and is connected to the mold base 5. A mold core 6 is provided on the mold base 5. An ejector base plate 3 is provided below the ejector plate 1. Both the mold base 5 and the ejector base plate 3 are connected to the first ejector pin 9. A push plate 4 is provided below the ejector base plate 3. A second ejector pin 11 is connected between the mold core 6 and the push plate 4. A stop head 7 is slidably connected to the outside of the first ejector pin 9. Both the first ejector pin 9 and the second ejector pin 11 penetrate the ejector plate 1, and the second ejector pin 11 penetrates the ejector base plate 3.
[0026] Please see Figure 1 and Figure 2 The ejector panel 1, the ejector base plate 3, and the push plate 4 are all provided with a latch 2 on both sides. A limiter 13 is slidably connected inside the latch 2. A limiter head 12 is provided on the limiter 13. The ejector panel 1 is located above the limiter head 12.
[0027] Please see Figure 1 and Figure 4 An injection tube 10 is connected between the mold base 5 and the push plate 4.
[0028] Please see Figure 1 and Figure 2 A top head 8 is provided above the stop head 7.
[0029] Please see Figure 1 and Figure 3 The lower surface of the push plate 4 is provided with a connecting bolt 14 for connecting the second ejector pin 11.
[0030] Working principle: During use, the limiter 13 moves downward, causing the ejector base plate 3 and the push plate 4 to move downward. The ejector panel 1 also moves downward under the action of gravity. After the ejector base plate 3 pulls the mold base 5 downward through the first ejector 9, it will squeeze the stop head 7. The stop head 7 will squeeze the ejector panel 1 downward. When the limiter 13 reaches the limit, the ejector base plate 3 and the push plate 4 can still move downward. Finally, the mold base 5 will be intercepted by the stop head 7, causing the ejector base plate 3 to separate from the push plate 4. The push plate 4 will continue to move downward, and the second ejector 11 will pull the mold core 6 downward, causing it to separate from the mold base 5, thus completing the demolding work.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A secondary demolding device, comprising an ejector plate (1) and a mold base (5), characterized in that: The ejector panel (1) is provided with a first ejector pin (9), which is connected to the mold base (5). The mold base (5) is provided with a mold core (6). An ejector base plate (3) is provided below the ejector panel (1). Both the mold base (5) and the ejector base plate (3) are connected to the first ejector pin (9). A push plate (4) is provided below the ejector base plate (3). A second ejector pin (11) is connected between the mold core (6) and the push plate (4). A stop (7) is slidably connected to the outside of the first ejector pin (9). Both the first ejector pin (9) and the second ejector pin (11) penetrate the ejector panel (1), and the second ejector pin (11) penetrates the ejector base plate (3).
2. The secondary demolding device according to claim 1, characterized in that: The ejector panel (1), ejector base plate (3) and push plate (4) are provided with snaps (2) on both sides. A limiter (13) is slidably connected inside the snap (2). A limiter head (12) is provided on the limiter (13). The ejector panel (1) is located above the limiter head (12).
3. The secondary demolding device according to claim 1, characterized in that: An injection tube (10) is connected between the mold base (5) and the push plate (4).
4. The secondary demolding device according to claim 1, characterized in that: A top head (8) is provided above the stop head (7).
5. A secondary demolding device according to claim 1, characterized in that: The lower surface of the push plate (4) is provided with a connecting bolt (14) for connecting the second ejector pin (11).