A slope ejection mechanism

Abstract

This utility model relates to an inclined ejection mechanism, including a body of a molding section of a device, wherein a drive connection portion extends outwardly in a downward direction from the body; the drive connection portion is provided with a first limiting portion and a second limiting portion facing opposite directions. This utility model enables precise molding of complex parts of a product structure, smoothly ejects the product during mold opening to avoid product damage, efficiently discharges cavity gas during injection, and simultaneously improves the structural stability and service life of the mechanism.

Description

Technical Field

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

[0002] In the field of mold forming and processing, for products with complex structures and irregular cavities, the ejection process after molding is a key step to ensure product quality. Currently, traditional ejection mechanisms mostly adopt a direct ejection structure. When dealing with complex parts of the product (such as irregular protrusions, deep cavities, and multi-curved surface connections), this structure is prone to problems such as uneven ejection force, surface scratches, and product deformation after ejection, which seriously affect the product molding accuracy and production efficiency.

[0003] Meanwhile, during the injection molding process, a large amount of high-temperature gas is generated inside the mold cavity. If venting is not timely, defects such as surface gas trapping, scorching, insufficient glue, and bubbles will occur in the product, further reducing the product qualification rate. In addition, the drive connection parts of traditional ejection mechanisms are mostly rigid connections, lacking reasonable limit and buffer structures. After long-term use, they are prone to wear and loosening, affecting the stability and service life of the mechanism and increasing equipment maintenance costs.

[0004] Therefore, given the shortcomings of existing ejection mechanisms in complex product molding, ejection effect, venting efficiency, and structural stability, it is essential to design an inclined ejection mechanism that can adapt to the molding of complex structural products, provide smooth ejection, efficient venting, and structural stability, in order to solve the aforementioned technical deficiencies. Summary of the Invention

[0005] The purpose of this utility model is to provide an angled ejection mechanism that enables precise molding of complex parts of a product, smoothly ejects the product during mold opening to avoid product damage, efficiently discharges gas from the cavity during injection, and improves the structural stability and service life of the mechanism. This solves the technical problems of traditional ejection mechanisms in the prior art, such as difficulty in ejection, poor venting, poor structural stability, and easy wear.

[0006] To achieve the above technical solution, the technical solution of this utility model is as follows: A slanted ejection mechanism includes a body of a forming part of the equipment. The body serves as a direct forming component for complex parts of the product, and its structure is adapted to the cavity of the complex parts of the product to achieve precise forming of complex structures. The body extends outward in a downward direction and is provided with a driving connection part. The driving connection part is used to connect with the driving mechanism of the mold (such as an ejector plate, cylinder, etc.) to transmit driving power and drive the body to achieve a slanted ejection action. The driving connection part is provided with a first limiting part and a second limiting part facing opposite directions. The first limiting part and the second limiting part are located on both sides of the driving connection part, respectively, to provide bidirectional limiting for the connection between the driving connection part and the driving mechanism, preventing deviation or loosening during the driving process, ensuring the accuracy of the ejection action, and avoiding wear of the driving connection part due to force deviation, thereby improving the structural stability of the mechanism.

[0007] Furthermore, the drive connection part and the plumb surface are arranged to form an α angle; the α angle is 3°~6°. This angle range has been optimized through repeated experiments to ensure that the body can obtain sufficient oblique ejection stroke to ensure that complex structure products can be smoothly ejected from the cavity, while avoiding the problems of excessive force and accelerated wear of the mechanism during ejection due to an excessively large angle, and incomplete ejection and easy jamming of the product due to an excessively small angle, thus achieving a balance between ejection effect and mechanism wear.

[0008] Furthermore, the α angle is preferably 4°, which is the optimal implementation angle. This angle can ensure smooth ejection while minimizing the load on the drive mechanism, reducing friction between the body and the product / cavity during ejection, and preventing surface scratches on the product. The other end of the drive connection part is provided with a through-hole convex-shaped drive connection groove. The convex-shaped drive connection groove is adapted to the connection protrusion of the drive mechanism. The convex design can achieve precise positioning and stable connection between the drive connection part and the drive mechanism, preventing relative sliding during the drive process. It also facilitates assembly and disassembly, reducing maintenance difficulty. In addition, the through-hole design of the convex-shaped drive connection groove can also play an auxiliary role in venting. During glue injection, some gas inside the cavity can be discharged through this groove, improving venting efficiency.

[0009] Furthermore, a concave arc-shaped groove is provided on the periphery of the connection between the drive connection and the body. The arc-shaped groove is used to alleviate stress concentration at the connection between the body and the drive connection. Since the connection needs to withstand a large driving force and reaction force during the ejection process, the arc-shaped structure can distribute the force, avoid cracks, breaks and other damage at the connection, and extend the service life of the mechanism. At the same time, the gap formed by the arc-shaped groove can serve as an auxiliary venting channel. During the injection of glue, the gas inside the cavity can be discharged through the gap, further improving the venting effect and reducing defects caused by trapped air in the product.

[0010] Furthermore, the outer contour of the body is tapered, and the front and rear end faces and the left end face of the body gradually narrow inward from top to bottom, so that the cross-sectional area of ​​the body gradually decreases from top to bottom. The tapered structure of the body is adapted to the cavity contour of complex parts of the product, which can accurately form the tapered or irregular complex structure of the product. At the same time, the design of the cross-section gradually decreasing from top to bottom allows the body to gradually detach from the product along the tapered slope when the mold is opened and ejected, reducing the contact area and friction between the body and the product, avoiding scratches, tears and other damage to the product surface, and ensuring the product molding accuracy. In addition, the side gap formed by the tapered structure can guide the gas inside the cavity to be discharged upward during the injection of glue, further optimizing the venting effect and avoiding product defects caused by gas retention.

[0011] Furthermore, the right side of the main body is provided with an abutting slope, which is adapted to the corresponding slope structure of the product and is used to form the slope part of the product to ensure the forming accuracy of the product slope. A brass layer is embedded in the abutting slope. The brass layer is fixed in the abutting slope by embedding and is flush with the abutting slope. It does not affect the forming accuracy of the product. The brass material has good toughness and cushioning performance. When the mold is closed, the brass layer can play a cushioning role to avoid rigid collision between the main body and the mold cavity, reduce wear, and protect the product forming surface to avoid defects such as indentations and scratches caused by collision, thus extending the service life of the mechanism and the mold.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1) This utility model is suitable for molding complex products: The conical structure of the body and the design of the anti-sloping surface can accurately adapt to the molding requirements of complex parts of the product, ensure the molding accuracy of the product, and solve the problem that traditional ejection mechanisms cannot accurately mold complex structures.

[0014] 2) The present invention has excellent ejection effect: the inclined design of the drive connection part (α angle 3°~6°, preferably 4°) enables the body to achieve stable inclined ejection. Combined with the structure of the body cross section decreasing from top to bottom, it reduces the friction during ejection, avoids product tearing and deformation, and ensures that the product can be smoothly removed from the cavity, solving the problems of difficult ejection and easy product damage in traditional ejection mechanisms.

[0015] 3) This utility model has high exhaust efficiency: the convex-shaped drive connecting groove, the arc-shaped groove and the side gap formed by the conical structure of the body together constitute a multi-channel auxiliary exhaust structure, which can quickly exhaust the high-temperature gas inside the cavity during glue injection, avoid defects such as trapped air, burning, bubbles, and insufficient glue in the product, and significantly improve the product qualification rate.

[0016] 4) This utility model has a stable structure and a long service life: the bidirectional limiting function of the first limiting part and the second limiting part prevents deviation and loosening during the driving process; the arc-shaped groove relieves stress concentration and avoids damage at the connection; the brass layer of the contact slope plays a buffering and protective role, reducing wear caused by rigid collisions, thus improving the overall structural stability and service life of the mechanism and reducing maintenance costs. Attached Figure Description

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0018] Figure 1 This is a schematic diagram of the overall structure of the inclined ejection mechanism of this utility model;

[0019] Figure 2 This is a front view of the present utility model;

[0020] Figure 3 This is a schematic diagram of the negative axis side of this utility model;

[0021] In the figure, the markings are: 1-body, 2-drive connection part, 21-first limiting part, 22-second limiting part, 23-convex-shaped drive connection groove, 3-arc-shaped groove, 4-abutting slope. 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. 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.

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please see the appendix Figures 1 to 3 As shown: A sloped ejection mechanism includes a body 1 of the forming part of the equipment, a drive connection part 2, an arc-shaped groove 3 and a contacting slope 4.

[0025] The main body 1, as the core component for molding complex parts of the product, has a tapered outer contour. Specifically, the front and rear end faces and the left end face gradually narrow inward from top to bottom, so that the cross-sectional area of ​​the main body 1 gradually decreases from top to bottom. This structure is adapted to the complex tapered parts of the product and can accurately mold the irregular contours of the product. The right side of the main body 1 has an integrally molded inclined abutment surface 4. The inclination angle of the abutment surface 4 is consistent with the angle of the corresponding inclined surface of the product. It is used to mold the inclined surface structure of the product. A brass layer is embedded in the abutment surface 4. The brass layer is fixed by an inlay process and is flush with the surface of the abutment surface 4 to ensure that it does not affect the molding accuracy of the product. When the mold is closed, the brass layer contacts the mold cavity and plays a buffering role to avoid rigid collision.

[0026] The main body 1 extends outward at a downward angle and is provided with a drive connection part 2. The drive connection part 2 and the main body 1 are integrally formed to ensure connection strength and avoid breakage during ejection. The drive connection part 2 and the plumb surface form an angle α, which is set to an optimal implementation angle of 4°. This angle can ensure that the main body 1 obtains sufficient oblique ejection stroke while reducing drive load. The other end of the drive connection part 2 is provided with a through-hole convex-shaped drive connection groove 23. The size of the convex-shaped drive connection groove 23 matches the connection protrusion of the mold drive mechanism. During assembly, the protrusion of the drive mechanism is inserted into the convex-shaped drive connection groove 23 to achieve precise positioning and stable connection. At the same time, the through-hole structure of the convex-shaped drive connection groove 23 can help to discharge gas during injection.

[0027] The drive connection part 2 is provided with a first limiting part 21 and a second limiting part 22 facing opposite directions. The first limiting part 21 and the second limiting part 22 are both integrally formed protrusions on both sides of the drive connection part 2, respectively located on both sides of the drive connection groove 23. When the drive mechanism is connected to the drive connection part 2, the first limiting part 21 and the second limiting part 22 abut against both sides of the drive mechanism to achieve bidirectional limiting, prevent the drive connection part 2 from shifting left and right during the drive process, and ensure the accuracy of the ejection action.

[0028] A concave arc-shaped groove 3 is provided on the periphery of the connection between the drive connection part 2 and the body 1. The curvature of the arc-shaped groove 3 is set to R0.1~R0.3, preferably R0.25. This curvature can effectively disperse the stress at the connection and avoid cracks at the connection due to force concentration during ejection. At the same time, the annular gap formed by the arc-shaped groove 3 can serve as an auxiliary exhaust channel. It can cooperate with the convex drive connection groove 23 and the side gap of the conical structure of the body 1 to achieve multi-channel exhaust and ensure that the gas in the cavity is quickly discharged during glue injection.

[0029] The working process of the inclined ejection mechanism in this embodiment is as follows:

[0030] In the injection stage: the mold is closed, and the body 1 and the mold cavity together form the molding space for complex parts of the product. During injection, the molten material is injected into the cavity. The high-temperature gas inside the cavity is discharged through the multi-channel system consisting of the side gap of the conical structure of the body 1, the arc-shaped groove 3, and the convex drive connection groove 23, which avoids gas stagnation, ensures that the material fills the cavity, and guarantees the product molding quality.

[0031] Ejection stage: After the product is formed, the mold opens and the drive mechanism starts. The drive connection part 2 is driven to move through the convex drive connection groove 23. Since the drive connection part 2 is at a 4° angle to the plumb surface, the drive connection part 2 drives the body 1 to move upward along the oblique direction. The conical structure of the body 1 gradually separates from the inner wall of the product, reducing friction and avoiding product damage. At the same time, the first limit part 21 and the second limit part 22 ensure that the drive connection part 2 moves smoothly and does not deviate until the body 1 is completely separated from the product, completing the ejection action.

[0032] During the mold closing stage: The drive mechanism drives the body 1 to reset, and the brass layer of the contact slope 4 comes into contact with the mold cavity, which plays a buffering role, avoids rigid collisions, protects the mechanism and the mold, and extends the service life.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art should be able to make equivalent embodiments by making some changes or modifications to the above-disclosed technical content without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An inclined ejection mechanism, comprising a body (1) of a forming section of a device, characterized in that: The main body (1) extends outward in a downward direction and is provided with a drive connection part (2); the drive connection part (2) is provided with a first limiting part (21) and a second limiting part (22) facing opposite directions.

2. The inclined ejection mechanism as described in claim 1, characterized in that: The drive connection part (2) and the plumb surface are arranged to form an angle α; the angle α is 3°~6°.

3. The inclined ejection mechanism as described in claim 2, characterized in that: The angle of α is 4°; the other end of the drive connection part (2) is provided with a through convex drive connection groove (23).

4. The inclined ejection mechanism as described in claim 3, characterized in that: The drive connection part (2) and the body (1) are provided with an inwardly recessed arc-shaped groove (3) on the periphery of the connection.

5. The inclined ejection mechanism as described in claim 4, characterized in that: The outer contour of the body (1) is tapered, and the front and rear end faces and the left end face of the body (1) gradually narrow inward from top to bottom, so that the cross-sectional area of ​​the body gradually decreases from top to bottom.

6. The inclined ejection mechanism as described in claim 5, characterized in that: The right side of the body (1) is provided with an abutting slope (4); the abutting slope (4) is embedded with a brass layer.

Images