High-precision mold ejector pin

Abstract

The utility model discloses a high-precision mould ejector pin, which particularly relates to the technical field of mould ejector pins and comprises a circular truncated cone, a reinforcing rod is fixedly connected to the top of the circular truncated cone, a threaded sleeve is sleeved in the middle of the reinforcing rod, a limiting disc is fixedly connected to the bottom of the threaded sleeve, and limiting sliding blocks are symmetrically and fixedly connected to the periphery of the top of the threaded sleeve. The bottom end of the threaded sleeve is sleeved with a spring, and the top end of the threaded sleeve is sleeved with an ejector pin. Lubricating oil is poured into the top cover, and during use, the lubricating oil can slowly seep and be attached to the surface of the ejector pin through the liquid outlet groove and the liquid seeping opening, so that the lubricating effect is achieved, and the phenomenon that the ejector pin shakes and is blocked when moving due to friction between the ejector pin and a mold hole is avoided; the ejector pin and the mold hole are matched in a high-precision state all the time, the quality of a demolding product is improved, mounting of the top cover can be limited through the limiting column, and when the stud is attached to a finished product, the cooling effect can be achieved through the stud and lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of mold ejector technology, and more specifically, to a high-precision mold ejector. Background Technology

[0002] In the mold manufacturing industry, ejector pins, as key components of molds, play an indispensable role in the demolding process. With the rapid development of the manufacturing industry, higher requirements are placed on the precision, quality, and production efficiency of mold products, which also sets stringent standards for the performance of mold ejector pins.

[0003] Traditional ejector pins are often precisely fitted when first installed inside the mold hole. However, when the ejector pin pushes the finished product out repeatedly, friction occurs between the ejector pin and the inside of the mold hole. Over time, this can lead to loose fit between the ejector pin and the mold hole, causing shaking and jamming, which affects the demolding effect and reduces the dimensional accuracy and surface quality of the product. Therefore, a high-precision mold ejector pin is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-precision mold ejector pin to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision mold ejector pin, comprising a frustum, a reinforcing rod fixedly connected to the top of the frustum, a threaded sleeve fitted in the middle of the reinforcing rod, a limiting plate fixedly connected to the bottom of the threaded sleeve, limiting sliders symmetrically fixedly connected around the top of the threaded sleeve, a spring fitted at the bottom of the threaded sleeve, and an ejector pin fitted at the top of the threaded sleeve. By pressing the spring with the ejector pin, a buffering effect can be achieved when the ejector pin ejects the mold.

[0006] The bottom of the ejector pin has a limiting groove corresponding to the limiting slider. A stud is fixedly connected to the top of the ejector pin, and a liquid outlet groove is threaded on the surface of the stud. A seepage port is opened at the top of the ejector pin corresponding to the liquid outlet groove. A top cover is fitted onto the middle of the stud, and a limiting post is fixedly connected to the inner cavity of the top cover. Through the cooperation of the limiting slider and the limiting groove, the position of the ejector pin can be limited, improving the stability of the ejector pin. It is threadedly connected to the reinforcing rod through a threaded sleeve. The overall length can be adjusted by rotating the ejector pin to drive the threaded sleeve to rotate, which is convenient for adjustment and use. By pouring lubricating oil into the top cover, the lubricating oil can slowly seep out and adhere to the surface of the ejector pin through the liquid outlet groove and seepage port during use, which plays a lubricating role. The threaded connection between the stud and the top cover is convenient for connection and use. When the stud is in contact with the finished product, the stud and the lubricating oil can play a role in cooling.

[0007] Preferably, the inner cavity of the threaded sleeve is threadedly connected to the outer surface of the reinforcing rod, the diameter of the limiting plate is the same as the diameter of the ejector pin, and the spring is disposed between the limiting plate and the ejector pin. By rotating the ejector pin, the rotation of the threaded sleeve can be controlled, and the position of the threaded sleeve in the middle of the reinforcing rod can be adjusted, which facilitates the adjustment of the overall height. Furthermore, by pressing the ejector pin against the spring, the ejector pin can be buffered during use, thereby improving the performance.

[0008] Preferably, the limiting slider corresponds one-to-one with the limiting groove. The limiting slider is located in the middle of the limiting groove, and the top of the reinforcing rod extends to the middle of the internal groove of the ejector pin. Through the cooperation of the limiting slider and the limiting groove, the threaded sleeve and the ejector pin are connected, so that the ejector pin slides in the middle of the threaded sleeve, which is convenient for buffering and the reinforcing rod improves the stability of the ejector pin sliding.

[0009] Preferably, the ejector pin, reinforcing rod, and threaded sleeve are slidably connected, and the stud is threadedly connected to the inner cavity of the top cover, which facilitates the connection between the top cover and the stud.

[0010] Preferably, the top cover is provided with lubricating oil in the middle, the top cover is made of thermally conductive metal, and the diameter of the top cover is the same as the diameter of the ejector pin, so that the top cover can be cooled by the lubricating oil.

[0011] Preferably, the inner depth of the liquid outlet groove is the same as the thread depth of the stud surface, and the depth of the seepage port is the same as the depth of the liquid outlet groove. Through the cooperation of the liquid outlet groove and the seepage port, the lubricating oil in the middle of the top cover can slowly seep out, thereby adhering to the surface of the ejector pin for lubrication, avoiding wear, and improving the use effect.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention firstly involves pouring lubricating oil into the inside of the top cover. During use, the lubricating oil can slowly seep out through the liquid outlet and seepage port and adhere to the surface of the ejector pin, thus playing a lubricating role. This prevents friction between the ejector pin and the mold hole, which could cause the ejector pin to wobble or get stuck. This ensures that the fit between the ejector pin and the mold hole is always in a high-precision state, improving the quality of the demolded product. Furthermore, the installation of the top cover can be limited by the limiting post, and the stud and lubricating oil can help cool the product when the stud is in contact with the finished product.

[0014] This utility model also uses the combination of a limiting slider and a limiting groove to limit the position of the ejector pin, thereby improving the stability of the ejector pin. It is connected to the reinforcing rod by a threaded sleeve, and the overall length can be adjusted by rotating the ejector pin to drive the threaded sleeve to rotate, which is convenient for adjustment and use. When the ejector pin ejects the product, the spring is squeezed by the ejector pin and the frustum, which plays a buffering role and avoids hard damage to the product surface caused by rapid force, thereby improving the molding quality of the product.

[0015] In summary, through the interaction of the above-mentioned multiple functions, lubrication can be provided between the ejector pin and the mold hole, ensuring that the fit between the ejector pin and the mold hole is always in a high-precision state, thus improving the quality of the demolded product. At the same time, the ejector pin can be buffered to avoid hard damage to the product surface caused by rapid force, thereby improving the molding quality of the product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0018] Figure 3 This is a schematic diagram showing the disassembled structure of the ejector pin and threaded sleeve of this utility model.

[0019] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0020] The attached diagram is labeled as follows: 1. Frustum; 2. Reinforcing rod; 3. Threaded sleeve; 4. Limiting plate; 5. Spring; 6. Ejector pin; 7. Limiting groove; 8. Limiting slider; 9. Stud; 10. Liquid outlet groove; 11. Leakage port; 12. Top cover; 13. Limiting post. Detailed Implementation

[0021] 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.

[0022] As attached Figure 1-3 The high-precision mold ejector pin shown includes a frustum 1, a reinforcing rod 2 fixedly connected to the top of the frustum 1, a threaded sleeve 3 sleeved in the middle of the reinforcing rod 2, a limiting plate 4 fixedly connected to the bottom of the threaded sleeve 3, a limiting slider 8 symmetrically fixedly connected around the top of the threaded sleeve 3, a spring 5 sleeved at the bottom of the threaded sleeve 3, and an ejector pin 6 sleeved at the top of the threaded sleeve 3. By pressing the spring 5 with the ejector pin 6, a buffering effect can be achieved when the ejector pin pushes the mold out.

[0023] Limiting grooves 7 are formed around the bottom of the ejector pin 6 at positions corresponding to the limiting slider 8. A stud 9 is fixedly connected to the top of the ejector pin 6. A liquid outlet groove 10 is formed on the surface of the stud 9. A seepage port 11 is formed at the top of the ejector pin 6 at a position corresponding to the liquid outlet groove 10. A top cover 12 is fitted in the middle of the stud 9. A limiting post 13 is fixedly connected to the inner cavity of the top cover 12. Through the cooperation of the limiting slider 8 and the limiting groove 7, the position of the ejector pin 6 can be limited, improving the stability of the ejector pin 6. It is threadedly connected to the reinforcing rod 2 through the threaded sleeve 3. The overall length can be adjusted by rotating the ejector pin 6 to drive the threaded sleeve 3 to rotate, which is convenient for adjustment and use. By pouring lubricating oil into the top cover 12, the lubricating oil can slowly seep out and adhere to the surface of the ejector pin 6 through the liquid outlet groove 10 and the seepage port 11 during use, which plays a lubricating role. It is threadedly connected to the top cover 12 through the stud 9, which is convenient for connection and use. When the stud 9 is in contact with the finished product, the stud 9 and the lubricating oil can play a role in cooling.

[0024] As attached Figure 1-4 As shown, the inner cavity of the threaded sleeve 3 is threadedly connected to the outer surface of the reinforcing rod 2. The diameter of the limiting plate 4 is the same as the diameter of the ejector pin 6. The spring 5 is set between the limiting plate 4 and the ejector pin 6. The limiting slider 8 corresponds one-to-one with the limiting groove 7. The limiting slider 8 is set in the middle of the limiting groove 7. The top of the reinforcing rod 2 extends to the middle of the inner groove of the ejector pin 6. The ejector pin 6, the reinforcing rod 2, and the threaded sleeve 3 are slidably connected. The stud 9 is threadedly connected to the inner cavity of the top cover 12. Lubricating oil is provided in the middle of the top cover 12. The material of the top cover 12 is set as a heat-conducting metal. The diameter of the top cover 12 is the same as the diameter of the ejector pin 6. The inner cavity depth of the liquid outlet groove 10 is the same as the thread depth on the surface of the stud 9. The depth of the seepage port 11 is... With the same depth as the liquid outlet 10, the threaded sleeve 3 can be rotated by rotating the ejector pin 6, which adjusts the position of the threaded sleeve 3 in the middle of the reinforcing rod 2, making it easy to adjust the overall height. The ejector pin 6 also compresses the spring 5, which can buffer the ejector pin 6 during use and improve the performance. The threaded sleeve 3 and the ejector pin 6 are connected by the cooperation of the limiting slider 8 and the limiting groove 7, so that the ejector pin 6 can slide in the middle of the threaded sleeve 3 for easy buffering. The reinforcing rod 2 improves the stability of the ejector pin 6's sliding. The lubricating oil in the middle of the top cover 12 can slowly seep out through the cooperation of the liquid outlet 10 and the seepage port 11, thus adhering to the surface of the ejector pin 6 for lubrication, avoiding wear and improving the performance.

[0025] The working principle of this utility model is as follows: Before use, lubricating oil is poured into the top cover 12 and the top cover 12 is threadedly connected to the stud 9 so that the lubricating oil is located in the top cavity of the stud 9.

[0026] When the ejector pin 6 lifts the finished product, it will first squeeze the spring 5 to achieve a buffering effect. During continuous use, the lubricating oil on the top of the stud 9 will slowly flow out through the liquid outlet groove 10 and the liquid seepage port 11 and adhere to the surface of the ejector pin 6, which will play a lubricating role and prevent the surface of the ejector pin 6 from wearing.

[0027] By rotating the ejector pin 6, the threaded sleeve 3 can be rotated on the top of the reinforcing rod 2, which can easily adjust the overall length and make it easy to adapt to different uses.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision mold ejector pin comprising a circular truncated cone (1), characterized in that: The top of the circular table (1) is fixedly connected with a reinforcing rod (2), the middle part of the reinforcing rod (2) is sleeved with a threaded sleeve (3), the bottom of the threaded sleeve (3) is fixedly connected with a limiting disc (4), the top of the threaded sleeve (3) is fixedly connected with a limiting sliding block (8) around the periphery in a symmetrical manner, the bottom end of the threaded sleeve (3) is sleeved with a spring (5), and the top end of the threaded sleeve (3) is sleeved with a thimble (6). The bottom end of the thimble (6) is provided with a limiting sliding groove (7) around the periphery at a position corresponding to the limiting sliding block (8), the top end of the thimble (6) is fixedly connected with a stud (9), the surface of the stud (9) is threadedly provided with a liquid outlet groove (10), the top end of the thimble (6) is provided with a liquid permeation opening (11) at a position corresponding to the liquid outlet groove (10), and the middle part of the stud (9) is sleeved with a top cover (12), and the inner cavity of the top cover (12) is fixedly connected with a limiting column (13).

2. A high-precision mold ejector pin according to claim 1, characterized in that: The inner cavity of the threaded sleeve (3) is threadedly connected with the outer surface of the reinforcing rod (2), the diameter of the limiting disc (4) is the same as that of the thimble (6), and the spring (5) is arranged between the limiting disc (4) and the thimble (6).

3. A high-precision mold ejector pin according to claim 1, characterized in that: The limiting sliding block (8) corresponds to the limiting sliding groove (7) one by one, the limiting sliding block (8) is arranged in the middle part of the limiting sliding groove (7), and the top end of the reinforcing rod (2) extends into the middle part of the inner groove of the thimble (6).

4. A high precision mold ejector pin according to claim 1, wherein: The thimble (6) is in sliding connection with the reinforcing rod (2) and the threaded sleeve (3), and the stud (9) is in threaded connection with the inner cavity of the top cover (12).

5. A high precision mold ejector pin according to claim 1, wherein: The middle part of the top cover (12) is provided with lubricating oil, the material of the top cover (12) is a heat-conducting metal material, and the diameter of the top cover (12) is the same as that of the thimble (6).

6. A high precision mold ejector pin according to claim 1, wherein: The inner cavity depth of the liquid outlet groove (10) is the same as the threaded surface depth of the stud (9), and the depth of the liquid permeation opening (11) is the same as the depth of the liquid outlet groove (10).

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