Front mold ejection mechanism of automobile part mold

Abstract

The utility model discloses a front mold ejection mechanism of an automobile part mold, which belongs to the technical field of mold manufacturing and is characterized by comprising a support box, a demolding mechanism is fixedly connected to a chamfer on the inner side of the support box, and a mold mechanism is fixedly connected to the top of the demolding mechanism. The demolding mechanism can ensure that enough force is provided for ejecting the formed automobile parts out of the mold in the ejection process, compared with some traditional manual or single-power-source ejection modes, the multiple air cylinders are arranged, the demolding requirement of the automobile parts can be better met, it is ensured that the ejection action is efficiently completed, and the demolding efficiency is improved. The mold mechanism is stably connected and positioned with the mold, the mold is supported and limited when the mold is formed, and the mold mechanism can be separated from the demolding mechanism when demolding is needed, so that the formed mold can fall into an external collecting device; and a stable installation and operation environment is provided for the demolding mechanism and the mold mechanism inside by arranging the supporting box.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, and in particular to a front mold ejection mechanism for automotive parts molds. Background Technology

[0002] Injection molding is a method of shaping industrial products. Products are usually made using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. An injection molding machine is the main molding equipment that uses plastic molds to make plastic products of various shapes from thermoplastic or thermosetting materials. Injection molding is achieved through an injection molding machine and a mold. Injection molds are important process equipment for producing various industrial products. With the rapid development of the plastics industry and the widespread application of plastic products in industries such as aviation, aerospace, electronics, machinery, shipbuilding, and automobiles, injection molds are tools for producing plastic products. They are also tools for giving plastic products a complete structure and precise dimensions. Fluid flows into the mold cavity, and after cooling and solidification, the molded product is obtained. An injection mold consists of two parts: a moving mold and a fixed mold. The moving mold is installed on the moving platen of the injection molding machine, and the fixed mold is installed on the fixed platen of the injection molding machine. During injection molding, the moving mold and the fixed mold close to form a gating system and a cavity. When the mold is opened, the moving mold and the fixed mold separate to remove the plastic product.

[0003] In the production process of existing automotive parts, stamping is required. After the stamping is completed by the existing stamping dies, the product is squeezed in the die. Due to the large friction between the product and the die, the stamped workpiece needs to be manually ejected by the workers. However, the current die ejection mechanism can generally only eject once. Therefore, it is necessary to design an ejection mechanism for automotive parts dies that can repeatedly eject to solve these problems.

[0004] The existing patent (publication number: CN210911020U) discloses an ejection mechanism for automotive parts molds, comprising a frame body, a hydraulic cylinder, an upper mold, a lower mold, and an ejection plate. This invention features an ejection plate placement groove fixedly installed on the lower mold, with the ejection plate slidably positioned within the groove. The bottom of the ejection plate is fixedly connected to a movable plate inside the ejection mechanism via a vertical rod. The movable plate is sleeved on a limiting post, with a limiting block fixedly installed at the top of the limiting post. A return spring is sleeved below the movable plate and on the limiting post. When the upper mold descends, the movable plate causes the ejection plate to descend. After the part is formed in the mold cavity, the upper mold rises, causing the movable plate to move upwards, simultaneously causing the ejection plate to rise and eject the formed part. This ejection process can be repeated, greatly improving work efficiency and facilitating widespread adoption and promotion.

[0005] Existing patents offer solutions to the above problems, but they lack a structure for simultaneously demolding multiple automotive connectors. This results in only one demolding operation being performed on a single product at a time during mass production of automotive connectors, thus reducing demolding efficiency.

[0006] To address this, a front mold ejection mechanism for automotive parts molds is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a front mold ejection mechanism for automotive parts molds, which can solve the problem that existing mold manufacturing lacks a structure for simultaneous demolding of multiple automotive connectors, resulting in demolding operations that can only be performed on a single product at a time during mass production of automotive connectors, thus reducing demolding efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a front mold ejection mechanism for automotive parts molds, including a support box, a demolding mechanism fixedly connected to the chamfered corner inside the support box, and a mold mechanism fixedly connected to the top of the demolding mechanism;

[0009] The demolding mechanism includes four cylinders, a movable plate, several spring telescopic rods, a lower template, a lower mold, and an ejector block. The bottoms of the four cylinders are fixedly connected to the chamfered corners inside the support box. The movable plate is fixedly connected to the top of the cylinders and slidably connected to the inside of the support box. Several spring telescopic rods are fixedly connected to the top of the movable plate. The lower template is fixedly connected to the top of the spring telescopic rods. The lower mold is fixedly connected to the inside of the lower template. The ejector block is slidably connected to the surface of the lower mold, and the bottom of the ejector block is fixedly connected to the top of the spring telescopic rods.

[0010] Preferably, the mold mechanism includes four hydraulic telescopic rods, a fixing hole, an upper template, and a mold hole, with the bottom of the four hydraulic telescopic rods fixedly connected to the inner side of the top chamfer of the lower template.

[0011] Preferably, the fixing hole is opened at the chamfer at the bottom of the upper template, the telescopic ends of the top of the four hydraulic telescopic rods are fixedly connected to the inside of the fixing hole, and the upper template is slidably connected to the top of the lower template.

[0012] Preferably, the mold hole is opened on the inner side of the upper mold plate, and the inner side of the mold hole is slidably connected to the surface of the lower mold.

[0013] Preferably, a reinforcing ring is fixedly connected to the bottom of the spring telescopic rod, and the surface of the reinforcing ring is coated with an anti-corrosion coating.

[0014] Preferably, the spring telescopic rod includes an inner rod, an outer rod, and a buffer spring. The inner rod is slidably connected to the inner side of the outer rod, and the buffer spring is sleeved on the surface of the inner rod. The buffer spring is a high-strength fatigue-resistant spring.

[0015] Preferably, a sealing gasket is fixedly connected to the top surface of the lower template, and the top of the sealing gasket is in contact with the bottom of the upper template.

[0016] Preferably, a release pad is fixedly connected to the inner side of the mold hole. The release pad is made of silicone rubber and its surface is coated with a release aid coating.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The demolding mechanism of this application can ensure that there is sufficient force to eject the molded automotive parts from the mold during the ejection process. Compared with some traditional manual or single power source ejection methods, this multi-cylinder setting can better meet the demolding requirements of automotive parts and ensure the efficient completion of the ejection action.

[0019] 2. The mold mechanism of this application is stable and the mold is connected and positioned. During mold forming, the mold is supported and limited. When demolding is required, it can be separated from the demolding mechanism so that the molded mold can fall into the external collection device. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the front mold ejection mechanism of the automotive parts mold of this utility model;

[0021] Figure 2 This is an overall structural diagram of the demolding mechanism of this utility model;

[0022] Figure 3 This is an overall structural diagram of the mold mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the reinforcing ring of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the buffer spring of this utility model.

[0025] In the diagram, 1. Support box; 2. Demolding mechanism; 21. Cylinder; 22. Moving plate; 23. Spring telescopic rod; 24. Lower template; 25. Lower mold; 26. Ejector block; 3. Mold mechanism; 31. Hydraulic telescopic rod; 32. Fixing hole; 33. Upper template; 34. Mold hole; 4. Reinforcing ring; 5. Inner rod; 6. Outer rod; 7. Buffer spring; 8. Sealing gasket; 9. Demolding pad. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] An ejection mechanism for the front mold of an automotive parts mold includes a support box 1, a demolding mechanism 2 fixedly connected to the chamfered corner inside the support box 1, and a mold mechanism 3 fixedly connected to the top of the demolding mechanism 2.

[0029] The demolding mechanism 2 includes four cylinders 21, a movable plate 22, several spring telescopic rods 23, a lower template 24, a lower mold 25, and an ejector block 26. The bottom of the four cylinders 21 is fixedly connected to the chamfer inside the support box 1. The movable plate 22 is fixedly connected to the top of the cylinders 21 and is slidably connected to the inside of the support box 1. Several spring telescopic rods 23 are fixedly connected to the top of the movable plate 22. The lower template 24 is fixedly connected to the top of the spring telescopic rods 23. The lower mold 25 is fixedly connected to the inside of the lower template 24. The ejector block 26 is slidably connected to the surface of the lower mold 25, and the bottom of the ejector block 26 is fixedly connected to the top of the spring telescopic rods 23.

[0030] In this embodiment: The support box 1 provides a stable installation and operating environment for the internal demolding mechanism 2 and mold mechanism 3. It can withstand various forces generated during injection molding and ejection, ensuring that the entire mechanism will not shake or deform due to external forces during operation, thus guaranteeing the stability and precision of the automotive parts production process. By setting cylinders 21, the four cylinders 21 working together can generate sufficiently strong thrust to overcome the adhesion and friction of the automotive parts within the mold, ensuring the smooth ejection of the molded parts from the mold. The moving plate 22 plays a role in… To transmit the power generated by cylinder 21 to spring telescopic rod 23, the moving plate 22 is slidably connected to the inner side of support box 1. This sliding connection allows the moving plate 22 to move smoothly in a straight line along the inner wall of support box 1 under the push of cylinder 21, ensuring the stability and continuity of power transmission. During the ejection process, spring telescopic rod 23 can act as a buffer and shock absorber. When cylinder 21 suddenly applies a large ejection force, spring telescopic rod 23 will absorb part of the impact force through its own elastic extension and contraction characteristics, preventing this impact force from being directly transmitted to the automotive mold. This design avoids problems such as component deformation, surface scratches, or mold damage caused by excessive impact force. Furthermore, the spring telescopic rod 23, when moving upwards, can drive the ejector block 26 to eject the molded automotive connector mold. The lower mold plate 24, as a support and connecting component for the lower mold 25, firmly fixes the lower mold 25 to its inner side. It provides a stable mounting platform for the lower mold 25, ensuring that it will not shift or shake during injection and ejection. This guarantees that the automotive parts can be accurately molded according to the predetermined shape and size within the mold. During the injection process, the lower mold 25... The molten plastic fills the cavity of the lower mold 25 under pressure. After cooling and solidification, it forms the corresponding part of the automotive part. During the ejection process, the ejector block 26, driven by the spring telescopic rod 23, accurately transmits the ejection force to the automotive part along the surface of the lower mold 25. It can accurately apply the force to specific parts of the part according to the extension and retraction of the spring telescopic rod 23 and the guiding effect of the lower mold 25, ensuring that the part can be smoothly demolded from the mold and avoiding problems such as deformation and surface scratches of the part caused by inaccurate ejection position or uneven force transmission.

[0031] Specifically, such as Figure 3 As shown, the mold mechanism 3 includes four hydraulic telescopic rods 31, a fixing hole 32, an upper template 33, and a mold hole 34. The bottom of the four hydraulic telescopic rods 31 is fixedly connected to the inner side of the top chamfer of the lower template 24.

[0032] Specifically, such as Figure 3As shown, the fixing hole 32 is opened at the chamfer of the bottom of the upper template 33, and the telescopic ends of the top of the four hydraulic telescopic rods 31 are fixedly connected to the inside of the fixing hole 32. The upper template 33 is slidably connected to the top of the lower template 24.

[0033] Specifically, such as Figure 3 As shown, the mold hole 34 is opened on the inner side of the upper mold plate 33, and the inner side of the mold hole 34 is slidably connected to the surface of the lower mold 25.

[0034] In this embodiment: the hydraulic telescopic rod 31 allows for precise control of the relative movement between the upper mold plate 33 and the lower mold plate 24. During mold closing, the hydraulic telescopic rod 31 ensures a tight fit between the upper mold plate 33 and the lower mold plate 24, preventing leakage of molten plastic from the mold gaps during injection molding. During mold opening, the hydraulic telescopic rod 31 accurately opens the mold, providing favorable conditions for subsequent demolding operations. The fixing hole 32 allows the upper mold plate 33 to move accurately up and down, using the fixing hole 32 as a positioning point, driven by the hydraulic telescopic rod 31. The upper mold plate 33 is slidably connected to the top of the lower mold plate 24, and together they form a complete mold cavity. During injection molding, the tight fit between the upper mold plate 33 and the lower mold plate 24 provides a closed space for the molten plastic. This allows the molten plastic to fill the mold cavity under pressure, and after cooling and solidification, form automotive parts. When the mold opens, the upper mold plate 33 separates from the lower mold plate 24 under the drive of the hydraulic telescopic rod 31, providing the necessary space for subsequent demolding operations. It also ensures that the demolding process can proceed smoothly, avoiding problems such as difficulty in demolding parts due to the mold not being fully opened. The mold hole 34 provides a suitable space for the lower mold 25, allowing the lower mold 25 to slide inside it. This provides the necessary space and shape constraints for the molding of automotive parts, ensuring that the upper mold plate 33 can move in the correct direction during injection and demolding, ensuring that the automotive parts can be accurately molded according to the predetermined shape and size, and can smoothly cooperate with the ejection mechanism to complete the demolding operation.

[0035] Specifically, such as Figure 4 As shown, a reinforcing ring 4 is fixedly connected to the bottom of the spring telescopic rod 23, and the surface of the reinforcing ring 4 is coated with an anti-corrosion coating.

[0036] Specifically, such as Figure 5 As shown, the spring telescopic rod 23 includes an inner rod 5, an outer rod 6, and a buffer spring 7. The inner rod 5 is slidably connected to the inner side of the outer rod 6, and the buffer spring 7 is sleeved on the surface of the inner rod 5. The buffer spring 7 is a high-strength fatigue-resistant spring.

[0037] In this embodiment: by setting a reinforcing ring 4, the connection stability between the spring telescopic rod 23 and the moving plate 22 can be effectively enhanced. By setting an anti-corrosion coating, the contact between these corrosive substances and the metal surface of the reinforcing ring 4 can be effectively blocked, the corrosion rate of the metal can be slowed down, the service life of the reinforcing ring 4 can be extended, thereby reducing the frequency of maintenance and replacement due to component corrosion, reducing production costs and improving production efficiency. By setting the inner rod 5 to slide inside the outer rod 6, this structural design enables the spring telescopic rod 23 to realize the telescopic function. By setting a buffer spring 7 sleeved on the surface of the inner rod 5 and being a high-strength fatigue-resistant spring, the spring telescopic rod 23 has excellent buffering performance during the ejection process.

[0038] Specifically, such as Figure 2 As shown, a sealing gasket 8 is fixedly connected to the top surface of the lower template 24, and the top of the sealing gasket 8 contacts the bottom of the upper template 33.

[0039] Specifically, such as Figure 3 As shown, a release pad 9 is fixedly connected to the inner side of the mold hole 34. The release pad 9 is made of silicone rubber material and the surface of the release pad 9 is coated with a release aid coating.

[0040] In this embodiment: By setting a sealing gasket 8, when the mold is closed, the sealing gasket 8 can fill the tiny gaps that may exist between the upper mold plate 33 and the lower mold plate 24, forming an effective sealing barrier to prevent the plastic melt from leaking out of these gaps under high pressure. By setting a demolding pad 9, the friction between the part and the inner wall of the mold hole 34 can be significantly reduced during the demolding process of the automotive parts. By setting the demolding pad 9 to be made of silicone rubber, the silicone rubber material itself has a low coefficient of friction. In addition, the demolding auxiliary coating further reduces the friction, so that the part can slide out of the mold hole 34 more easily during demolding. This reduces problems such as part deformation, surface scratches, or even demolding failure caused by excessive friction, and improves demolding efficiency and product quality. By setting a demolding auxiliary coating, the friction between the part and the inner wall of the mold hole 34 can be significantly reduced.

[0041] Working Principle: First, the user installs the support box 1 in the appropriate working area of ​​the injection molding production equipment. Then, the user energizes and starts the hydraulic telescopic rod 31. Driven by the hydraulic telescopic rod 31, the upper mold plate 33 gradually moves downward along the sliding connection structure with the lower mold plate 24 until it is tightly closed with the lower mold plate 24. After the mold is closed, the user can accurately pour the pre-prepared mold material into the inside of the mold hole 34. The mold material will gradually fill and form within the space defined by the mold hole 34 according to the shape of the mold cavity. During this process, as the temperature changes, the mold material will gradually cool and solidify, eventually forming the shape of the automotive part mold that meets the design requirements. After the mold material has been formed and fully cooled inside the mold hole 34, the user energizes and starts the hydraulic telescopic rod 31 again. At this time, the hydraulic telescopic rod 31 drives in reverse, moving the upper mold plate. 33 slowly moves upward, gradually separating it from the lower mold plate 24, thus opening the necessary space for the subsequent ejection operation. Then, the user powers on and starts the cylinder 21. After the cylinder 21 starts, the power it generates will push the movable plate 22, which is fixedly connected to its top, to move smoothly upward along the inner wall of the support box 1. Since the movable plate 22 is also fixedly connected to the top of the spring telescopic rod 23, during the upward movement of the movable plate 22, it will simultaneously drive several spring telescopic rods 23 to move upward together. When the spring telescopic rods 23 move upward, they will apply upward pressure to the ejection block 26 based on their own structural characteristics. Driven by this pressure, the ejection block 26 will slide precisely along the surface of the lower mold 25, thereby gradually ejecting the cooled mold from the surface of the lower mold 25. Finally, the user only needs to collect and organize the ejected mold.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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. An ejection mechanism for the front mold of an automotive parts mold, comprising a support box (1), characterized in that: A demolding mechanism (2) is fixedly connected to the chamfered corner inside the support box (1), and a mold mechanism (3) is fixedly connected to the top of the demolding mechanism (2); The demolding mechanism (2) includes four cylinders (21), a moving plate (22), several spring telescopic rods (23), a lower template (24), a lower mold (25), and an ejector block (26). The bottom of the four cylinders (21) is fixedly connected to the chamfer inside the support box (1). The moving plate (22) is fixedly connected to the top of the cylinders (21) and is slidably connected to the inside of the support box (1). Several spring telescopic rods (23) are fixedly connected to the top of the moving plate (22). The lower template (24) is fixedly connected to the top of the spring telescopic rods (23). The lower mold (25) is fixedly connected to the inside of the lower template (24). The ejector block (26) is slidably connected to the surface of the lower mold (25). The bottom of the ejector block (26) is fixedly connected to the top of the spring telescopic rods (23).

2. The ejection mechanism for the front mold of an automotive parts mold according to claim 1, characterized in that: The mold mechanism (3) includes four hydraulic telescopic rods (31), a fixing hole (32), an upper template (33) and a mold hole (34). The bottom of the four hydraulic telescopic rods (31) is fixedly connected to the inner side of the top chamfer of the lower template (24).

3. The ejection mechanism for the front mold of an automotive parts mold according to claim 2, characterized in that: The fixing hole (32) is opened at the chamfer at the bottom of the upper template (33), and the telescopic ends of the top of the four hydraulic telescopic rods (31) are fixedly connected to the inside of the fixing hole (32). The upper template (33) is slidably connected to the top of the lower template (24).

4. The ejection mechanism for the front mold of an automotive parts mold according to claim 2, characterized in that: The mold hole (34) is opened on the inner side of the upper template (33), and the inner side of the mold hole (34) is slidably connected to the surface of the lower mold (25).

5. The ejection mechanism for the front mold of an automotive parts mold according to claim 1, characterized in that: The bottom of the spring telescopic rod (23) is fixedly connected to a reinforcing ring (4), and the surface of the reinforcing ring (4) is coated with an anti-corrosion coating.

6. The ejection mechanism for the front mold of an automotive parts mold according to claim 1, characterized in that: The spring telescopic rod (23) includes an inner rod (5), an outer rod (6) and a buffer spring (7). The inner rod (5) is slidably connected to the inner side of the outer rod (6), and the buffer spring (7) is sleeved on the surface of the inner rod (5). The buffer spring (7) is a high-strength fatigue-resistant spring.

7. The ejection mechanism for the front mold of an automotive parts mold according to claim 1, characterized in that: A sealing gasket (8) is fixedly connected to the top surface of the lower template (24), and the top of the sealing gasket (8) is in contact with the bottom of the upper template (33).

8. The ejection mechanism for the front mold of an automotive parts mold according to claim 2, characterized in that: A release pad (9) is fixedly connected to the inner side of the mold hole (34). The release pad (9) is made of silicone rubber material and the surface of the release pad (9) is coated with a release aid coating.

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