A mold ejector pin delayed ejection structure

Abstract

This utility model relates to the field of die-casting mold technology and discloses a delayed ejection structure for a mold, including a fixed plate and a die-casting part. An ejector plate is provided on the fixed plate, and a guide plate is fixedly installed at the end of the ejector plate away from the fixed plate. A delay mechanism is slidably connected to the end of the ejector plate away from the fixed plate, and an ejector pin is fixedly installed at the end of the delay mechanism near the guide plate. A fixed seat is fixedly installed at the end of the guide plate away from the ejector plate. This delayed ejection structure for a mold, through its inclined design, can convert the linear motion of the ejector plate into the oblique motion of the inclined ejector, facilitating the detachment of the inclined ejector from the undercut area of ​​the die-casting part. The ejector pin directly contacts the die-casting part, acting as the main ejection component to push the die-casting part entirely out of the mold cavity. By using ejector pins of different lengths or a stepped ejector plate design, a time difference can be created between the ejection strokes of the ejector pin and the inclined ejector, achieving staged ejection.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, specifically to a delayed ejection structure for mold ejector pins. Background Technology

[0002] Die casting molds are often used to produce parts with undercut structures, complex geometries, or precision thin-walled features in automotive interior parts, electronic connectors, and medical devices. This method can meet the requirements of different undercut structures and complex geometries, and can also enable the rapid production of parts with precision thin-walled features. However, due to the complexity of the structure, traditional ejection methods are difficult to achieve smooth demolding after solidification of these die castings, which can easily lead to problems such as deformation and tearing.

[0003] While existing die-casting molds can quickly eject products after cooling, traditional ejection structures cannot achieve automated production and require manual operation, resulting in extremely low output. Furthermore, the ejection time deviation is large, and the ejector pins and angled ejectors are prone to synchronous movement, causing the die-cast parts to deform or tear due to uneven stress. At the same time, the angled ejectors are prone to jamming due to insufficient guide clearance, and uneven ejection force distribution can lead to local sticking to the mold. This results in poor adaptability and reliability, making it difficult to promote and use. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a delayed ejection structure for mold ejector pins. It can effectively solve the problems in the prior art, such as the inability to achieve automated production, the need for manual operation, extremely low output, large ejection time deviation, the easy synchronization of ejector pins and angled ejectors, which leads to deformation or tearing of die castings due to uneven force, and the easy jamming of angled ejectors due to insufficient guide clearance. Uneven ejection force distribution leads to local sticking to the mold, resulting in poor adaptability and reliability, and making it inconvenient for widespread use.

[0005] The technical solution adopted by this utility model is: a mold ejector pin delayed ejection structure, including a fixed plate and a die-casting part. An ejector pin plate is provided on the fixed plate. A guide plate is fixedly installed at the end of the ejector pin plate away from the fixed plate. A delay mechanism is slidably connected at the end of the ejector pin plate away from the fixed plate. An ejector pin is fixedly installed at the end of the delay mechanism close to the guide plate. A fixed seat is fixedly installed at the end of the guide plate away from the ejector pin plate. An inclined ejector is fixedly installed at the end of the fixed seat away from the ejector pin plate.

[0006] Preferably, a fixing post is provided at one end of the fixing seat near the inclined top, and the fixing seat is fixedly installed to the inclined top through the fixing post.

[0007] Through the above technical solution, by cooperating with the fixed column and the inclined ejector, the two can be fixed after the angle between the inclined ejector and the fixed seat is determined during installation. This can enhance the connection stability between the fixed seat and the inclined ejector, prevent the inclined ejector from being loose during movement, and ensure the reliability of the demolding action.

[0008] Preferably, the inclined top adopts an inclined design, the inclined angle of the inclined top is 3° to 10°, and the end of the inclined top away from the fixed seat is in contact with the die-cast part.

[0009] Through the above technical solution, the linear motion of the ejector plate can be transformed into the oblique motion of the angled ejector by the inclined design, which makes it easier for the angled ejector to disengage from the undercut area of ​​the die casting. At the same time, the contact between the angled ejector and the die casting can assist in its forming.

[0010] Preferably, the end of the ejector pin that is away from the fixed plate is in contact with the die-cast part, and the ejector pin is either a round ejector pin or a flat ejector pin.

[0011] Through the above technical solution, the ejector pin directly contacts the die casting and acts as the main ejector component to push the die casting out of the mold cavity. Furthermore, the selection of round or flat ejector pins can adapt to different die casting structural requirements, improving the practicality and versatility of the overall ejection structure.

[0012] Preferably, the delay mechanism is one of a push rod of different lengths or a stepped ejector plate, and the delay mechanism and the ejector pin are an integral structure.

[0013] Through the above technical solutions, by using ejector rods of different lengths or stepped ejector plate designs, a time difference can be created between the ejector pin and the ejector stroke of the inclined ejector, achieving staged ejection. Furthermore, the integrated structure can improve the coordination between the delay mechanism and the ejector pin.

[0014] Preferably, the end of the ejector pin and the inclined ejector pin away from the fixed plate is coated with vanadium carbide, and the gap between the fixed seat and the guide plate is 0.02 to 0.05 mm.

[0015] The above technical solution enhances the wear resistance of the ejector pin and the angled ejector by vanadium carbide coating, extends their service life, and prevents wear of the ejector pin and the angled ejector under high temperature and high pressure. The gap between the fixed seat and the guide plate reduces the risk of jamming during the movement of the angled ejector, preventing the angled ejector from getting stuck and affecting normal use.

[0016] Preferably, a delay mechanism is slidably connected to one end of the guide plate near the ejector plate, and the delay mechanism is adapted to the ejector plate.

[0017] Through the above technical solution, the guide plate provides sliding guidance for the delay mechanism, and the adapted design can ensure that the delay mechanism and the ejector plate move in coordination, avoiding interference between the two during movement.

[0018] Compared with the prior art, this utility model provides a delayed ejection structure for mold ejector pins, which has the following beneficial effects: 1. This mold uses a delayed ejection structure with ejector pins. The inclined design can convert the linear motion of the ejector pin plate into the inclined motion of the ejector pin, which can facilitate the ejector pin to disengage from the undercut area of ​​the die casting. At the same time, the contact between the ejector pin and the die casting can assist in its molding. The ejector pin directly contacts the die casting and acts as the main ejection component to push the die casting out of the mold cavity as a whole. 2. This mold uses a delayed ejection structure with ejector pins. By designing ejector pins of different lengths or stepped ejector plates, a time difference can be created between the ejection stroke of the ejector pin and the angled ejector, achieving staged ejection. The vanadium carbide coating can enhance the wear resistance of the ejector pin and the angled ejector, extend their service life, and prevent the ejector pin and the angled ejector from easily wearing out under high temperature and high pressure. 3. The mold uses a delayed ejection structure with ejector pins. By setting the gap between the fixed seat and the guide plate, the risk of jamming during the movement of the inclined ejector pin can be reduced, and the inclined ejector pin can be prevented from getting stuck. At the same time, the guide plate can ensure that the delayed mechanism and the ejector pin plate move in coordination, and avoid interference between the two during their movement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the disassembled structure of this utility model. Figure 1 ; Figure 6 This is a schematic diagram of the disassembled structure of this utility model. Figure 2 .

[0020] The components include: 1. Fixed plate; 2. Ejector plate; 3. Guide plate; 4. Delay mechanism; 5. Ejector pin; 6. Fixed seat; 7. Fixed column; 8. Sloping ejector; 9. Die casting part. 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] Example 1: As Figure 1-6 As shown, the present invention provides a mold ejector pin delayed ejection structure, including a fixed plate 1 and a die-casting part 9. An ejector pin plate 2 is provided on the fixed plate 1. A guide plate 3 is fixedly installed at the end of the ejector pin plate 2 away from the fixed plate 1. A delay mechanism 4 is slidably connected at the end of the ejector pin plate 2 away from the fixed plate 1. An ejector pin 5 is fixedly installed at the end of the delay mechanism 4 near the guide plate 3. A fixed seat 6 is fixedly installed at the end of the guide plate 3 away from the ejector pin plate 2. An inclined ejector 8 is fixedly installed at the end of the fixed seat 6 away from the ejector pin plate 2.

[0023] Specifically, a fixing post 7 is provided at one end of the fixed base 6 near the inclined ejector 8. The fixed base 6 is fixedly installed with the inclined ejector 8 through the fixing post 7. The advantage is that, through the cooperation of the fixing post 7 and the inclined ejector 8, the two can be fixed after the angle between the inclined ejector 8 and the fixed base 6 is determined during installation. This can enhance the connection stability between the fixed base 6 and the inclined ejector 8, prevent the inclined ejector 8 from being loose during movement, and ensure the reliability of the demolding action.

[0024] Specifically, the inclined ejector 8 adopts an inclined design with an inclination angle of 3° to 10°. The end of the inclined ejector 8 away from the fixed seat 6 is in contact with the die-cast part 9. The advantage is that the inclined design can convert the linear movement of the ejector plate 2 into the inclined movement of the inclined ejector 8, which makes it easier for the inclined ejector 8 to disengage from the undercut area of ​​the die-cast part 9. At the same time, the contact between the inclined ejector 8 and the die-cast part 9 can assist in its molding.

[0025] Specifically, the end of the ejector pin 5 away from the fixed plate 1 contacts the die-cast part 9. The ejector pin 5 is either a round ejector pin or a flat ejector pin. The advantage is that by directly contacting the die-cast part 9 with the ejector pin 5, it can push the die-cast part 9 out of the mold cavity as the main ejection component. Furthermore, the selection of round or flat ejector pins can adapt to different structural requirements of the die-cast part 9, improving the practicality and versatility of the overall ejection structure.

[0026] Example 2: Figure 2-6 As shown, this is an improvement on the previous embodiment.

[0027] Specifically, the delay mechanism 4 is one of the push rods or stepped ejector plates of different lengths. The delay mechanism 4 and the ejector pin 5 are an integral structure. The advantage is that by designing push rods or stepped ejector plates of different lengths, the ejector pin 5 and the inclined pusher 8 can form a time difference in their ejection strokes, realizing staged ejection. Furthermore, the integral structure can improve the coordination of the actions of the delay mechanism 4 and the ejector pin 5.

[0028] Specifically, the ends of the ejector pin 5 and the inclined ejector 8 furthest from the fixed plate 1 are coated with vanadium carbide. The gap between the fixed seat 6 and the guide plate 3 is 0.02-0.05mm. The advantage is that the vanadium carbide coating can enhance the wear resistance of the ejector pin 5 and the inclined ejector 8, extend their service life, and prevent the ejector pin 5 and the inclined ejector 8 from easily wearing under high temperature and high pressure. The gap setting between the fixed seat 6 and the guide plate 3 can reduce the risk of jamming when the inclined ejector 8 moves, and prevent the inclined ejector 8 from getting stuck, thus affecting normal use.

[0029] Specifically, a delay mechanism 4 is slidably connected to one end of the guide plate 3 near the ejector plate 2. The delay mechanism 4 is adapted to the ejector plate 2. The advantage is that the guide plate 3 provides sliding guidance for the delay mechanism 4. The adapted design can ensure that the delay mechanism 4 and the ejector plate 2 move in coordination and avoid interference when they move.

[0030] Working Principle: During use, the fixed column 7 and the inclined ejector 8 work together. When installing, the angle between the inclined ejector 8 and the fixed base 6 is determined before fixing, enhancing the connection stability between the fixed base 6 and the inclined ejector 8. This prevents the inclined ejector 8 from easily loosening during movement, ensuring the reliability of the demolding action. The inclined design converts the linear movement of the ejector plate 2 into the oblique movement of the inclined ejector 8, facilitating its disengagement from the undercut area of ​​the die-cast part 9. Simultaneously, the contact between the inclined ejector 8 and the die-cast part 9 assists in its molding. The ejector pin 5 directly contacts the die-cast part 9, acting as the main ejection component to push the die-cast part 9 out of the mold cavity. Furthermore, the selection of round or flat ejector pins can adapt to different structural requirements of the die-cast part 9, improving the overall ejection structure. The practicality and versatility of use are enhanced by the design of ejector pins of different lengths or stepped ejector plates, which allows for a time difference in the ejection stroke of ejector pin 5 and angled ejector 8, enabling staged ejection. The integrated structure improves the coordination of the delay mechanism 4 and ejector pin 5. The vanadium carbide coating enhances the wear resistance of ejector pin 5 and angled ejector 8, extending their service life and preventing wear under high temperature and high pressure conditions. The gap between the fixed seat 6 and the guide plate 3 reduces the risk of jamming during the movement of angled ejector 8, preventing it from getting stuck and affecting normal use. The guide plate 3 provides sliding guidance for the delay mechanism 4, and the adaptive design ensures that the delay mechanism 4 and ejector plate 2 move in coordination, avoiding interference between them.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold ejector pin delayed ejection structure, comprising a fixing plate (1) and a die-casting part (9), characterized in that: A pin plate (2) is provided on the fixed plate (1). A guide plate (3) is fixedly installed at the end of the pin plate (2) away from the fixed plate (1). A delay mechanism (4) is slidably connected at the end of the pin plate (2) away from the fixed plate (1). A pin component (5) is fixedly installed at the end of the delay mechanism (4) near the guide plate (3). A fixed seat (6) is fixedly installed at the end of the guide plate (3) away from the pin plate (2). An inclined pin (8) is fixedly installed at the end of the fixed seat (6) away from the pin plate (2).

2. The mold ejector pin delayed ejection structure according to claim 1, characterized in that: The fixed base (6) is provided with a fixed column (7) at one end near the inclined top (8), and the fixed base (6) is fixedly installed with the inclined top (8) through the fixed column (7).

3. The mold ejector pin delayed ejection structure according to claim 1, characterized in that: The inclined top (8) adopts an inclined design with an inclination angle of 3°~10°. The end of the inclined top (8) away from the fixed seat (6) is in contact with the die-cast part (9).

4. The mold ejector pin delayed ejection structure according to claim 1, characterized in that: The end of the ejector pin (5) away from the fixing plate (1) is in contact with the die-cast part (9), and the ejector pin (5) is either a round ejector pin or a flat ejector pin.

5. The mold ejector pin delayed ejection structure according to claim 1, characterized in that: The delay mechanism (4) is one of a push rod of different lengths or a stepped ejector plate, and the delay mechanism (4) and the ejector pin (5) are an integral structure.

6. The mold ejector pin delayed ejection structure according to claim 1, characterized in that: The pin (5) and the inclined pin (8) are coated with vanadium carbide at the ends away from the fixing plate (1), and the gap between the fixing seat (6) and the guide plate (3) is 0.02 to 0.05 mm.

7. The mold ejector pin delayed ejection structure according to claim 1, characterized in that: The guide plate (3) is slidably connected to a delay mechanism (4) at one end near the ejector plate (2), and the delay mechanism (4) is adapted to the ejector plate (2).

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