Plastic mold stripping top block guide mechanism
Patent Information
- Application Number
- CN202522416591.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-14
AI Technical Summary
[0004]本申请的目的是针对现有技术的不足之处，提供塑胶模具脱模顶块导向机构，以解决现有技术中随着模具的连续运行，润滑油或润滑脂会逐渐流失和变质，导致润滑效果下降的问题
[0012]本申请的有益效果在于：通过在推板内部设置储油腔和滚珠，利用滚珠的滚动将润滑油贴附在导向柱上，实现了自动、持续的润滑。相比传统的人工定期涂抹润滑油或润滑脂的方式，能够保证润滑油均匀地分布在推板与导向柱的接触面上，避免了局部润滑不足的问题，有效减少了推板与导向柱之间的摩擦力，降低了磨损，油管与推板螺纹连接，且油管内设有活塞头和螺纹杆，通过旋转螺纹杆即可实现向储油腔内补油的操作，简单方便。同时，油管上设有加注口和可拆卸的密封塞，当油管内润滑油不足时，可快速打开密封塞添加润滑油。
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Figure CN224827269U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mold demolding, and more specifically, to a guide mechanism for the demolding ejector block of a plastic mold. Background Technology
[0002] In the molding process of plastic molds, the demolding stage is a crucial step, directly affecting the quality of the molded plastic product, production efficiency, and the lifespan of the mold. The ejector block guide mechanism, as a key component of the demolding system, primarily guides the ejector block to move smoothly and accurately along a predetermined direction and trajectory during demolding, ensuring that the ejector block can successfully eject the molded plastic product from the mold cavity. In traditional ejector block guide mechanisms, the relative movement between the ejector plate and the guide post is frequent and the friction is relatively high. To ensure that the ejector plate can slide smoothly on the guide post, the guide mechanism usually needs to be lubricated and maintained regularly. However, most existing lubrication methods rely on manual application of lubricating oil or grease periodically. This method has several drawbacks: firstly, manual application makes it difficult to ensure that the lubricating oil or grease is evenly distributed on the contact surface between the ejector plate and the guide post, easily leading to insufficient local lubrication; secondly, as the mold continues to operate, the lubricating oil or grease will gradually be lost and deteriorate, resulting in a decrease in lubrication effectiveness. Utility Model Content
[0003] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.
[0004] The purpose of this application is to address the shortcomings of the prior art by providing a guide mechanism for the ejector block of a plastic mold, thereby solving the problem that in the prior art, as the mold continues to run, the lubricating oil or grease will gradually be lost and deteriorate, leading to a decrease in lubrication effect.
[0005] To achieve the above objectives, this application provides the following technical solution: A plastic mold ejector block guide mechanism includes a mold base, a push plate, a guide post, and an oil ejector assembly. The mold base has a drive plate inside, and a push rod is fixedly connected to the upper surface of the drive plate. The other end of the push rod passes through the mold base and is connected to the push plate. Guide posts pass through both sides of the push plate; The push plate has a sliding hole through which the guide post passes, and the inside of the push plate has an oil storage cavity that communicates with the sliding hole. A ball is embedded in the oil storage cavity, and the ball contacts the outer wall of the guide post.
[0006] Optionally, an oil pipe is installed on the side wall of the push plate, and the oil pipe is connected to the oil storage chamber.
[0007] Optionally, the outer wall of the oil pipe is provided with a threaded portion, and the oil pipe is threadedly connected to the push plate.
[0008] Optionally, a threaded rod is threaded onto the end of the oil pipe furthest from the push plate.
[0009] Optionally, the threaded rod is inserted into the oil pipe so that one end is fixedly connected to a piston head.
[0010] Optionally, the bottom end face of the oil pipe near the threaded rod has a filling port.
[0011] Optionally, a removable sealing plug is installed at the filling port.
[0012] The beneficial effects of this application are as follows: By setting an oil reservoir and ball bearings inside the push plate, the rolling of the ball bearings adheres the lubricating oil to the guide column, achieving automatic and continuous lubrication. Compared with the traditional method of manually applying lubricating oil or grease periodically, this ensures that the lubricating oil is evenly distributed on the contact surface between the push plate and the guide column, avoiding the problem of insufficient local lubrication, effectively reducing the friction between the push plate and the guide column, and reducing wear. The oil pipe is threadedly connected to the push plate, and the oil pipe is equipped with a piston head and a threaded rod. The operation of adding oil to the oil reservoir can be achieved by rotating the threaded rod, which is simple and convenient. At the same time, the oil pipe is equipped with a filling port and a removable sealing plug. When the lubricating oil in the oil pipe is insufficient, the sealing plug can be quickly opened to add lubricating oil. Attached Figure Description
[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.
[0014] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.
[0015] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the structure with the push plate raised. Figure 3 This is a schematic diagram of the connection structure between the push plate and the oil pipe; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.
[0016] Figure label: 1. Mold base; 2. Drive plate; 3. Push rod; 4. Push plate; 5. Guide post; 6. Oil pushing assembly; 7. Oil reservoir; 8. Ball bearing; 9. Piston head; 10. Threaded part; 11. Oil pipe; 12. Threaded rod; 13. Sealing plug; 14. Filling port. Detailed Implementation
[0017] The demolding ejector block guide mechanism for plastic molds provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.
[0018] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.
[0019] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0020] The present application will now be described in detail with reference to the accompanying drawings and embodiments.
[0021] Reference Figure 1-4 As shown, this utility model provides a guide mechanism for the ejector block of a plastic mold, including a mold base 1, a push plate 4, guide pillars 5, and an oil pushing assembly 6. The mold base 1 has a drive plate 2 inside, and a push rod 3 is fixedly connected to the upper surface of the drive plate 2. The other end of the push rod 3 passes through the mold base 1 and is connected to the push plate 4. Guide pillars 5 pass through both sides of the push plate 4. The push plate 4 has a sliding hole for the guide pillars 5 to pass through. The push plate 4 has an oil storage cavity 7 that communicates with the sliding hole. A ball bearing 8 is embedded in the oil storage cavity 7 and contacts the outer wall of the guide pillar 5.
[0022] An oil pipe 11 is installed on the side wall of the push plate 4, and the oil pipe 11 is connected to the oil storage chamber 7. A threaded part 10 protrudes from the outer wall of the oil pipe 11, and the oil pipe 11 is threadedly connected to the push plate 4. A threaded rod 12 is threadedly installed at the end of the oil pipe 11 away from the push plate 4. The threaded rod 12 passes into the interior of the oil pipe 11 and is fixedly connected to a piston head 9 at one end.
[0023] A filling port 14 is provided at the bottom end of the oil pipe 11 near the threaded rod 12. A removable sealing plug 13 is installed at the filling port 14.
[0024] Working Principle: During use, after the plastic mold completes the molding process, demolding is required. At this time, the mold base 1 separates from the top mold (not shown in the figure). Then, the drive plate 2 inside the mold base 1 is driven by a cylinder to start working. Since a push rod 3 is fixedly connected to the upper surface of the drive plate 2, and the other end of the push rod 3 extends out of the mold base 1 and is connected to the push plate 4, the movement of the drive plate 2 will drive the push rod 3 to move up or down (depending on the specific mold design direction), thereby pushing the push plate 4 to move along the direction of the guide post 5. The movement of the push plate 4 causes the top block connected to it (not shown in detail in the figure, but it is the actual demolding execution component) to push the molded plastic product out of the mold cavity, completing the demolding action.
[0025] The push plate 4 passes through guide posts 5 on both sides. Inside the push plate 4 is an oil reservoir 7 with a connecting sliding hole (through which the guide posts 5 pass). Ball bearings 8 are embedded in the oil reservoir 7 and contact the outer wall of the guide posts 5. When the push plate 4 slides on the guide posts 5, the ball bearings 8 continuously roll within the oil reservoir 7. Because the ball bearings 8 are in contact with the outer wall of the guide posts 5, during rolling, the lubricating oil in the oil reservoir 7 adheres to the guide posts 5, forming a lubricating oil film. This reduces the friction between the push plate 4 and the guide posts 5, allowing the push plate 4 to slide more smoothly.
[0026] During the oil replenishment process, an oil pipe 11 connected to the oil storage chamber 7 is installed on the side wall of the push plate 4. A threaded portion 10 protrudes from the outer wall of the oil pipe 11 and is threadedly connected to the push plate 4 for easy assembly and disassembly for oil replenishment. A threaded rod 12 is threadedly installed at the end of the oil pipe 11 furthest from the push plate 4. A piston head 9 is fixedly connected to the end of the threaded rod 12 that penetrates into the oil pipe 11. When the lubricating oil in the oil storage chamber 7 decreases due to use, the piston head 9 can be moved within the oil pipe 11 by rotating the threaded rod 12, forcing the lubricating oil in the oil pipe 11 into the oil storage chamber 7, thus achieving the oil replenishment operation. A filling port 14 is provided at the bottom end of the oil pipe 11 near the threaded rod 12. A removable sealing plug 13 is installed at the filling port 14. When the lubricating oil in the oil pipe 11 is insufficient, the sealing plug 13 can be opened, and lubricating oil can be added to the oil pipe 11 through the filling port 14.
[0027] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
[0028] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0029] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A plastic mold ejector block guide mechanism, comprising a mold base (1), an ejector plate (4), a guide post (5), and an oil ejector assembly (6), characterized in that: The mold base (1) is provided with a drive plate (2) inside. A push rod (3) is fixedly connected to the upper surface of the drive plate (2). The other end of the push rod (3) passes through the mold base (1) and is connected to the push plate (4). Guide posts (5) pass through both sides of the push plate (4); The push plate (4) has a sliding hole through which the guide post (5) passes. The inside of the push plate (4) has an oil storage cavity (7) that communicates with the sliding hole. A ball (8) is embedded inside the oil storage cavity (7). The ball (8) contacts the outer wall of the guide post (5).
2. The plastic mold ejector block guide mechanism according to claim 1, characterized in that: An oil pipe (11) is installed on the side wall of the push plate (4), and the oil pipe (11) is connected to the oil storage chamber (7).
3. The plastic mold ejector block guide mechanism according to claim 2, characterized in that: The outer wall of the oil pipe (11) is provided with a threaded part (10), and the oil pipe (11) is threadedly connected to the push plate (4).
4. The plastic mold ejector block guide mechanism according to claim 3, characterized in that: The oil pipe (11) has a threaded rod (12) threaded on one end away from the push plate (4).
5. The plastic mold ejector block guide mechanism according to claim 4, characterized in that: The threaded rod (12) is inserted into the oil pipe (11) so that one end is fixedly connected to the piston head (9).
6. The plastic mold ejector block guide mechanism according to claim 5, characterized in that: The bottom end of the oil pipe (11) near the threaded rod (12) has an injection port (14).
7. The plastic mold ejector block guide mechanism according to claim 6, characterized in that: A removable sealing plug (13) is installed at the filling port (14).