Ejection mechanism for machining oil pan mold

Abstract

The utility model relates to the technical field of oil pan dies, and discloses an ejection mechanism for oil pan die processing, which comprises a fixed die block, an ejection plate, a guide plate and a die frame, an electric push rod in the die frame drives the guide plate, and the guide plate vertically and stably moves under the guide of four guide rods. The ejector plate is connected with the telescopic ejector rod through the fixing block, the fixing rod and other components, the fixing rod is only used for fixing the telescopic ejector rod to guarantee the stability of the telescopic ejector rod during ejection, and during work, in the mold closing state, all the components are tightly matched and formed, the electric push rod is started, the guide plate is pushed to ascend, and the telescopic ejector rod and the ejector plate are driven to stably eject the engine oil pan out. And if the telescopic ejector rod needs to be maintained and replaced, the fixing rod can be separated from the positioning block of the telescopic ejector rod, so that convenient disassembly is realized, after demolding is completed, all parts of the mechanism are reset, preparation is made for next injection molding and ejection circulation, the demolding quality and efficiency of the oil pan are effectively improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil pan mold technology, specifically to an ejection mechanism for processing oil pan molds. Background Technology

[0002] Traditional ejection mechanisms for oil pan mold processing have drawbacks. While a similar mechanism, disclosed in Chinese Utility Model Patent No. CN222242356U3, can eject the oil pan and improve material handling efficiency, it suffers from several shortcomings. Relying on a single hydraulic cylinder, the ejection process suffers from uneven force distribution, potentially leading to localized deformation of the oil pan. Furthermore, the mechanism is not easy to maintain; repair and replacement of key components are difficult, increasing maintenance costs and downtime. Additionally, traditional ejection mechanisms often lack precise guiding devices, making them prone to misalignment during ejection. Uneven stress on the oil pan not only causes deformation during demolding, affecting its dimensional accuracy, but may also lead to defects such as scratches and cracks on the surface of the oil pan, reducing the product qualification rate. Moreover, the component connection method of the traditional ejection mechanism is not flexible enough. When a component is damaged and needs to be repaired or replaced, the disassembly and installation process is very cumbersome, which not only consumes a lot of time and labor costs, but also leads to prolonged equipment downtime, seriously affecting production efficiency and increasing the production costs of enterprises. These shortcomings restrict the improvement of the quality and efficiency of oil pan production and make it difficult to meet the growing market demand. To address this, we propose an ejection mechanism for oil pan mold processing. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides an ejection mechanism for processing oil pan molds, which solves the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: an ejection mechanism for processing an oil pan mold, comprising a fixed module, an ejection plate, a guide plate, and a mold frame. An electric push rod is provided at the bottom of the mold frame, and the piston shaft of the electric push rod is fixedly connected to the top of the guide plate. Multiple fixing blocks are provided at the bottom of the ejection plate, and fixing rods and fixing springs are respectively installed inside the two sides of the fixing blocks. A telescopic ejector rod is inserted into the bottom of the ejection plate, and the telescopic ejector rod is fixed by the insertion of the fixing rod. A return spring is sleeved on the cylindrical surface of the telescopic ejector rod, wherein the end of the telescopic ejector rod slides through the guide plate, and the return spring is located between the ejection plate and the guide plate. A fixed module is inserted into the top of the mold frame, and the bottom of the fixed module is in contact with the top of the ejection plate.

[0007] Preferably, the mold frame has four guide rods symmetrical about a central axis inside, and four guide holes symmetrical about a central axis are opened on the guide plate. The guide rods slide through the guide holes. An electric push rod is installed with bolts at the bottom of the mold frame. The piston shaft of the electric push rod is fixedly connected to the bottom of the guide plate.

[0008] Preferably, the bottom end of the ejector plate is provided with a plurality of equally spaced fixing blocks, the fixing blocks are provided with positioning grooves inside, the two ends of the positioning grooves are provided with fixing holes, and the two sides of the fixing blocks are provided with movable cavities, which are connected to the fixing holes.

[0009] Preferably, the end of the fixing rod is provided with a rectangular movable plate, and the back of the movable plate is provided with mutually symmetrical fixing springs. The movable plate and the fixing springs are slidably installed inside the movable cavity. The front end of the fixing rod passes through the fixing block through the fixing hole, and the front end of the fixing rod extends into the interior of the positioning groove.

[0010] Preferably, the top of the telescopic top rod is provided with a positioning block, and the two ends of the positioning block are provided with semi-circular arc-shaped slide rail grooves. The cylindrical surface of the slide rail groove is provided with a second fixing hole that passes through both ends. The positioning block is inserted into the interior of the positioning groove, and the front end of the fixing rod slides in cooperation with the slide rail groove, wherein the front end of the fixing rod is inserted into the second fixing hole for fixation.

[0011] Preferably, a return spring is sleeved on the cylindrical surface of the telescopic push rod, and multiple equidistant positioning cylinders are provided at the top of the guide plate. The end of the telescopic push rod passes through the guide plate through the positioning cylinders. The return spring is set between the ejector plate and the guide plate. The bottom of the fixed module is provided with four threaded connecting cylinders symmetrical about the central axis. The top of the mold frame is provided with four threaded holes symmetrical about the central axis. The threaded connecting cylinders are inserted into the threaded holes and fixedly connected with the threads.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides an ejection mechanism for processing oil pan molds, which has the following advantages:

[0014] 1. The ejection mechanism for the oil pan mold ensures structural stability through the coordinated operation of multiple components throughout the ejection process. Four symmetrical guide rods within the mold frame slide against guide holes on the guide plate, ensuring the guide plate rises smoothly only vertically and preventing deviation. The telescopic ejector rod is fixed to the ejection plate by a fixing rod, and a return spring is positioned between the ejection plate and the guide plate. When the electric push rod pushes the guide plate upward, the telescopic ejector rod drives the ejection plate to rise smoothly. With the buffering effect of the return spring, force is evenly applied to gradually move the oil pan within the mold module upward, effectively preventing deformation of the oil pan during demolding and improving product quality.

[0015] 2. The ejection mechanism for the oil pan mold facilitates component disassembly and maintenance. When the telescopic ejector needs replacement or repair, the fixing rod plays a unique role. The front end of the fixing rod is inserted and fixed into the fixing hole two of the positioning block at the top of the telescopic ejector. Its end is connected to the movable plate and the fixing spring and installed in the movable cavity of the fixing block. When the telescopic ejector needs to be disassembled, the front end of the fixing rod slides along the slide rail groove of the positioning block, compresses the fixing spring and retracts into the movable cavity, causing the front end of the fixing rod to disengage from the fixing hole two. At this time, the telescopic ejector loses its constraint and can be easily disassembled, which facilitates the maintenance of key components, reduces equipment maintenance costs, and improves equipment utilization efficiency. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram showing the structural breakdown of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0020] Figure 5 This is a schematic diagram of the ejector plate structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the connection structure between the telescopic top rod and the return spring of this utility model.

[0022] In the diagram: 1. Fixed module; 2. Ejector plate; 3. Fixing rod; 4. Fixing spring; 5. Telescopic ejector rod; 6. Return spring; 7. Guide plate; 8. Electric push rod; 9. Mold frame; 10. Guide rod; 11. Movable plate; 12. Fixing block; 13. Positioning groove; 14. Fixing hole one; 15. Movable cavity; 16. Positioning block; 17. Slide rail groove; 18. Fixing hole two; 19. Positioning cylinder. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-6An ejection mechanism for processing an oil pan mold includes a fixed module 1, an ejection plate 2, a guide plate 7, and a mold frame 9. An electric push rod 8 is provided at the bottom of the mold frame 9. The piston shaft of the electric push rod 8 is fixedly connected to the top of the guide plate 7. The bottom of the ejection plate 2 is provided with multiple fixing blocks 12. Fixing rods 3 and fixing springs 4 are respectively installed inside the two sides of the fixing blocks 12. A telescopic ejector rod 5 is inserted into the bottom of the ejection plate 2. The telescopic ejector rod 5 is fixed by the fixing rods 3. A return spring 6 is sleeved on the cylindrical surface of the telescopic ejector rod 5. The end of the telescopic ejector rod 5 slides through the guide plate 7. The return spring 6 is located between the ejection plate 2 and the guide plate 7. The top of the mold frame 9 is inserted with the fixed module 1. The bottom of the fixed module 1 is in contact with the top of the ejection plate 2.

[0025] Furthermore, the mold frame 9 has four guide rods 10 symmetrically arranged around a central axis inside, and four guide holes symmetrically arranged around a central axis are provided on the guide plate 7. The guide rods 10 slide through the guide holes. An electric push rod 8 is installed at the bottom of the mold frame 9 with bolts. The piston shaft of the electric push rod 8 is fixedly connected to the bottom of the guide plate 7. Together, they ensure that the guide plate 7 can move smoothly in the vertical direction under the drive of the electric push rod 8, laying the foundation for the subsequent driving of related components to achieve stable ejection of the oil pan.

[0026] Furthermore, the bottom end of the ejector plate 2 is provided with multiple equally spaced fixing blocks 12. The fixing blocks 12 have positioning grooves 13 inside, and fixing holes 14 are provided at both ends of the positioning grooves 13. Movable cavities 15 are provided inside both sides of the fixing blocks 12. The movable cavities 15 are connected to the fixing holes 14, providing installation positions and movement tracks for the fixing rods 3, fixing springs 4 and telescopic ejector rods 5. This realizes the orderly installation and coordinated movement of the components, ensuring the stability and functionality of the ejector structure.

[0027] Furthermore, the end of the fixed rod 3 is provided with a rectangular movable plate 11, and the back of the movable plate 11 is provided with mutually symmetrical fixed springs 4. The movable plate 11 and the fixed springs 4 are slidably installed inside the movable cavity 15. The front end of the fixed rod 3 passes through the fixed block 12 through the first fixed hole 14, and the front end of the fixed rod 3 extends into the interior of the positioning groove 13, thereby fixing the telescopic top rod 5. At the same time, it is convenient to disassemble the telescopic top rod 5 by compressing the spring to remove the fixed rod 3 from the second fixed hole 18 when needed. This realizes the stable installation and convenient disassembly of the telescopic top rod 5, ensuring the normal operation and maintenance convenience of the ejection mechanism.

[0028] Furthermore, the top of the telescopic push rod 5 is provided with a positioning block 16, and the two ends of the positioning block 16 are provided with semi-circular arc-shaped slide rail grooves 17. The cylindrical surface of the slide rail groove 17 is provided with a second fixing hole 18 that passes through both ends. The positioning block 16 is inserted into the interior of the positioning groove 13, and the front end of the fixing rod 3 is slidably engaged with the slide rail groove 17. The front end of the fixing rod 3 is inserted into the second fixing hole 18 for fixation, ensuring the precise movement of the telescopic push rod 5 during the push-out and reset process, thereby ensuring the accuracy and stability of the oil pan push-out.

[0029] Furthermore, a return spring 6 is sleeved on the cylindrical surface of the telescopic ejector rod 5, and multiple equidistant positioning cylinders 19 are provided at the top of the guide plate 7. The end of the telescopic ejector rod 5 passes through the guide plate 7 through the positioning cylinders 19. The return spring 6 is located between the ejector plate 2 and the guide plate 7. The bottom of the fixed module 1 is provided with four threaded connecting cylinders symmetrical about the central axis. The top of the mold frame 9 is provided with four threaded holes symmetrical about the central axis. The threaded connecting cylinders are inserted into the threaded holes and fixedly connected with the threads. This serves to buffer the ejection and reset impact force, guide the movement direction of the telescopic ejector rod 5, and stabilize the overall structure of the mold. This optimizes the ejection and reset process and improves the reliability and durability of the ejection mechanism.

[0030] Structural Description:

[0031] Fixed Module 1: Fixed Module 1 is a key part of the oil pan mold. It is located at the top of the mold frame 9, and its bottom is attached to the ejector plate 2, providing a cavity of a specific shape for the oil pan forming.

[0032] Ejector plate 2: Ejector plate 2 is located below fixed module 1, and its bottom end is provided with multiple fixing blocks 12 for installing components such as fixing rod 3, which push the oil pan upward during the ejection process;

[0033] Fixed rod 3: One end of the fixed rod 3 passes through the fixed hole 14, passes through the fixed block 12 and extends to the positioning groove 13, and the other end is connected to the movable plate 11 to realize the fixing and release of the telescopic top rod 5;

[0034] Fixed spring 4: Fixed spring 4 is installed in the movable cavity 15 and connected to the movable plate 11. It provides elastic force to the fixed rod 3 to ensure its stable fixation to the telescopic top rod 5.

[0035] Telescopic push rod 5: The top of the telescopic push rod 5 is provided with a positioning block 16, which is fixed to the push plate 2 by the fixing rod 3. Its end passes through the guide plate 7 and is responsible for pushing the oil pan out of the fixed module 1.

[0036] Return spring 6: The return spring 6 is sleeved on the cylindrical surface of the telescopic push rod 5 and is set between the ejector plate 2 and the guide plate 7. It is used to buffer the ejection and return impact force and to reset the telescopic push rod 5.

[0037] Guide plate 7: The guide plate 7 is located inside the mold frame 9 and is connected to the piston shaft of the electric push rod 8. The guide hole on it cooperates with the guide rod 10 to ensure smooth vertical movement during the ejection process.

[0038] Electric push rod 8: The electric push rod 8 is installed at the bottom of the mold frame 9. Its piston shaft is fixedly connected to the guide plate 7, providing power for the entire ejection mechanism and pushing the guide plate 7 to rise and fall.

[0039] Mold frame 9: Mold frame 9 is the supporting structure of the entire ejection mechanism. It is equipped with components such as electric push rod 8 and guide rod 10. The top is used to insert the fixed module 1 to ensure the stability of the mechanism.

[0040] Guide rod 10: There are four guide rods 10, which are symmetrically arranged inside the mold frame 9 along the central axis. They slide and engage with the guide holes on the guide plate 7 to guide the vertical movement of the guide plate 7.

[0041] Movable plate 11: The movable plate 11 is rectangular in shape and is installed in the movable cavity 15. The back is connected to the fixed spring 4, which cooperates with the fixed rod 3 to realize the extension and retraction movement of the fixed rod 3.

[0042] Fixed block 12: Fixed blocks 12 are evenly distributed at the bottom end of the top plate 2. They have positioning grooves 13, fixing holes 14 and movable cavities 15 inside, which are used to install and fix related components.

[0043] Positioning groove 13: Positioning groove 13 is formed inside the fixing block 12 and is used to insert positioning block 16 to provide accurate positioning and movement track for telescopic top rod 5;

[0044] Fixing hole 14: Fixing hole 14 is located at both ends of positioning groove 13, passes through fixing block 12, and is the channel through which the front end of fixing rod 3 passes, realizing the connection with other components;

[0045] Movable cavity 15: The movable cavity 15 is located inside both sides of the fixed block 12 and is connected to the fixed hole 14, providing space for the movable plate 11 and the fixed spring 4 to move.

[0046] Positioning block 16: Positioning block 16 is installed at the top of telescopic top rod 5, with slide rail groove 17 and fixing hole 18 at both ends, which cooperate with fixing rod 3 to realize the precise positioning and movement of telescopic top rod 5;

[0047] Slide rail groove 17: The slide rail groove 17 is semi-circular and is opened on the cylindrical surfaces at both ends of the positioning block 16. It slides and engages with the front end of the fixing rod 3 to limit the installation trajectory of the telescopic top rod 5.

[0048] Fixing hole 2 18: Fixing hole 2 18 passes through both ends of slide rail groove 17 and is used to insert the front end of fixing rod 3 to realize the fixed connection between fixing rod 3 and positioning block 16;

[0049] Positioning cylinder 19: Positioning cylinders 19 are evenly distributed at the top of the guide plate 7. The end of the telescopic rod 5 passes through the guide plate 7 through the positioning cylinder 19, which serves to guide the movement direction of the telescopic rod 5.

[0050] Working principle: The four symmetrical threaded connecting cylinders on the bottom of the fixed module 1 precisely fit with the corresponding threaded holes on the top of the mold frame 9, forming a tight connection. At this time, the ejector plate 2 is tightly fitted with the fixed module 1. The telescopic ejector rod 5 is in a stretched state under the action of the return spring 6. The fixed rod 3, pushed by the elastic force of the fixed spring 4, passes through the first fixing hole 14 of the fixed block 12 and precisely inserts into the second fixing hole 18 of the positioning block 16 at the top of the telescopic ejector rod 5, firmly fixing the telescopic ejector rod 5 to the bottom of the ejector plate 2, ensuring the stability of the position of each component during the ejection process. After the mold is formed, the bolts on the fixed module 1 are removed, and then the ejection stage begins. The electric push rod 8 is started, and its piston pushes the guide plate 7 upward. The four symmetrical guide rods 10 on the mold frame 9 slide with the corresponding guide holes on the guide plate 7, so that the guide plate 7 can only rise smoothly in the vertical direction, ensuring the motion accuracy. As the guide plate 7 rises, the multiple equidistantly distributed positioning cylinders 19 at its top move upward. The telescopic ejector rod 5 moves upward synchronously. Since the telescopic ejector rod 5 is fixed on the ejector plate 2, the ejector plate 2 also rises accordingly. Under the action of the return spring 6, the telescopic ejector rod 5 drives the oil pan in the fixed module 1 to gradually move upward, avoiding deformation of the oil pan. When the telescopic ejector rod 5 needs to be disassembled, the front end of the fixed rod 3 begins to slide along the semi-circular slide rail groove 17 at both ends of the positioning block 16. During the sliding process, the fixed rod 3 gradually compresses the fixed spring 4 and retracts into the movable cavity 15 on both sides of the fixed block 12. When the front end of the fixed rod 3 is completely disengaged from the second fixing hole 18, the telescopic ejector rod 5 loses the constraint of the fixed rod 3 and can be disassembled for replacement and maintenance. After demolding, the piston shaft of the electric push rod 8 retracts, driving the guide plate 7 to descend. Under the pulling force of the return spring 6, the telescopic ejector rod 5 returns to its initial position along the positioning cylinder 19, restoring the entire ejection mechanism to its initial state, preparing for the next injection and ejection.

[0051] 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. An ejection mechanism for machining an oil pan mold, comprising a fixed module (1), an ejection plate (2), a guide plate (7), and a mold frame (9), characterized in that: An electric push rod (8) is provided at the bottom of the mold frame (9). A guide plate (7) is fixedly connected to the top of the piston shaft of the electric push rod (8). Multiple fixing blocks (12) are provided at the bottom of the ejector plate (2). Fixing rods (3) and fixing springs (4) are installed on the inside of the two sides of the fixing blocks (12). A telescopic push rod (5) is inserted into the bottom of the ejector plate (2). The telescopic push rod (5) is fixed by the fixing rod (3). A return spring (6) is sleeved on the cylindrical surface of the telescopic push rod (5). The end of the telescopic push rod (5) slides through the guide plate (7). The return spring (6) is located between the ejector plate (2) and the guide plate (7). A fixed module (1) is inserted into the top of the mold frame (9). The bottom of the fixed module (1) is in contact with the top of the ejector plate (2).

2. The ejection mechanism for processing an oil pan mold according to claim 1, characterized in that: The mold frame (9) is provided with four guide rods (10) symmetrical about the central axis inside. The guide plate (7) is provided with four guide holes symmetrical about the central axis. The guide rods (10) slide through the guide holes. The bottom of the mold frame (9) is fitted with bolts to install an electric push rod (8). The piston shaft of the electric push rod (8) is fixedly connected to the bottom of the guide plate (7).

3. The ejection mechanism for machining an oil pan mold according to claim 1, characterized in that: The bottom end of the top plate (2) is provided with a plurality of equally spaced fixing blocks (12). The fixing blocks (12) are provided with positioning grooves (13). The two ends of the positioning grooves (13) are provided with fixing holes (14). The two sides of the fixing blocks (12) are provided with movable cavities (15). The movable cavities (15) are connected to the fixing holes (14).

4. The ejection mechanism for machining an oil pan mold according to claim 3, characterized in that: The end of the fixed rod (3) is provided with a rectangular movable plate (11). The back of the movable plate (11) is provided with mutually symmetrical fixed springs (4). The movable plate (11) and the fixed springs (4) are slidably installed inside the movable cavity (15). The front end of the fixed rod (3) passes through the fixed block (12) through the fixed hole (14), and the front end of the fixed rod (3) extends into the positioning groove (13).

5. The ejection mechanism for processing an oil pan mold according to claim 4, characterized in that: The top of the telescopic top rod (5) is provided with a positioning block (16). The two ends of the positioning block (16) are provided with a semi-circular slide rail groove (17). The cylindrical surface of the slide rail groove (17) is provided with a fixing hole (18) that passes through both ends. The positioning block (16) is inserted into the interior of the positioning groove (13). The front end of the fixing rod (3) is slidably engaged with the slide rail groove (17). The front end of the fixing rod (3) is inserted into the fixing hole (18) for fixation.

6. The ejection mechanism for processing an oil pan mold according to claim 5, characterized in that: The cylindrical surface of the telescopic top rod (5) is fitted with a return spring (6). The top of the guide plate (7) is provided with multiple equidistant positioning cylinders (19). The end of the telescopic top rod (5) passes through the guide plate (7) through the positioning cylinders (19). The return spring (6) is set between the ejector plate (2) and the guide plate (7). The bottom of the fixed module (1) is provided with four threaded connecting cylinders symmetrical about the central axis. The top of the mold frame (9) is provided with four threaded holes symmetrical about the central axis. The threaded connecting cylinders are inserted into the threaded holes and fixedly connected with the threads.

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