A plastic cover injection molding die for a motorboat and an accelerated ejection structure thereof

Abstract

The application relates to a plastic covering piece injection molding mold for a motorboat and an accelerated ejection structure thereof, which comprises a movable mold and a fixed mold, a ejector plate is slidably connected to the movable mold, an inclined ejector block is slidably connected to the movable mold, the inclined ejector block is connected to the ejector plate through a plurality of inclined rods, the accelerated ejection structure comprises an accelerated ejector rod, an accelerated inclined rod and an accelerated inclined guide block, the accelerated inclined guide block is slidably connected to the ejector plate along a direction perpendicular to an opening direction of the mold, the accelerated inclined rod is fixedly connected to the movable mold, the inclined rod is arranged along an inclined direction of the opening direction of the mold and is slidably connected to the accelerated inclined guide block, one end of the accelerated ejector rod is arranged along the opening direction of the mold and is slidably connected to the movable mold, and the other end of the accelerated ejector rod is slidably connected to the accelerated inclined guide block along an inclined direction of the opening direction of the mold. The conventional ejection movement of the ejector plate is converted into the inclined and axial composite accelerated movement of the accelerated ejector rod, so that the plastic part obtains a separation speed higher than the conventional ejection speed in the initial demolding stage, and a safe distance is provided in advance.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to an injection mold for a plastic cover for a motorboat and its accelerated ejection structure. Background Technology

[0002] The ejector ramp structure of an injection mold is a demolding component designed for plastic parts with side recesses or side holes. It consists of an ejector rod, a guide mechanism, and a reset assembly. During ejection, the ejector rod moves obliquely, simultaneously completing the demolding of the plastic part from the fixed mold and the side recess or side hole, preventing the plastic part from getting stuck or damaged.

[0003] like Figure 15 The image shows a plastic cover for a motorboat, which has numerous side recesses (including internal and external recesses) and side holes. This type of plastic cover is typically molded and ejected from its inner wall using a slanted ejector. However, this motorboat plastic cover has an internal recess on its upper side. During the ejection and demolding process using a conventional slanted ejector, the slanted ejector will collide with its internal recess, causing damage to the internal recess of the product. Summary of the Invention

[0004] To reduce the possibility of damage to the product during demolding, this application provides an injection mold for a motorboat plastic cover and its accelerated ejection structure.

[0005] The technical solution provided in this application for an injection molding die for a plastic cover part of a motorboat and its accelerated ejection structure is as follows:

[0006] A jet ski plastic cover injection mold and its accelerated ejection structure include a moving mold and a fixed mold. An ejector plate and an inclined ejector block are slidably connected to the moving mold. The inclined ejector block and the ejector plate are connected by several inclined rods. The accelerated ejection structure includes an accelerated ejector rod, an accelerated inclined rod, and an accelerated inclined guide block. The accelerated inclined guide block is slidably connected to the ejector plate perpendicular to the mold opening direction. The accelerated inclined rod is fixedly connected to the moving mold and passes through and is slidably connected to the accelerated inclined guide block along the mold opening direction inclined to the mold. One end of the accelerated ejector rod passes through and is slidably connected to the moving mold along the mold opening direction, and the other end is slidably connected to the accelerated inclined guide block along the mold opening direction inclined to the mold.

[0007] By adopting the above technical solution, the accelerated ejection structure, through the inclined surface transmission design of the accelerated inclined rod, the accelerated inclined guide block and the accelerated ejector rod, converts the conventional ejection motion of the ejector plate into the inclined and axial compound acceleration motion of the accelerated ejector rod. This allows the plastic part to obtain a release speed higher than the conventional ejection speed in the early stage of demolding, thus creating a safe distance from the inclined ejector in advance and reducing the possibility of the inclined ejector scraping or colliding with the upper concave structure during the subsequent inclined motion.

[0008] Preferably, it further includes an accelerating side-pulling structure, which includes a side-pulling block, a side-pulling inclined guide block, and an inclined guide rod. The side-pulling block is used to form the concave structure of the inner wall of the product. The side-pulling block is slidably connected to the inclined top block in the horizontal direction and has a first inclined surface. The side-pulling inclined guide block is slidably connected inside the inclined top block and has a second inclined surface that abuts against the first inclined surface. One end of the inclined guide rod is slidably connected to the side-pulling inclined guide block, and the other end of the inclined guide rod is mounted on the ejector plate.

[0009] By adopting the above technical solution, the molding and fitting constraints between the concave structure and the inclined ejector are addressed. Direct ejection would cause the inclined ejector to get stuck due to the concave structure. When the ejection action is initiated, this structure, through the side-pulling block and the side-pulling inclined guide block, pushes the side-pulling inclined guide block with the inclined guide rail, causing the side-pulling block to retract inwards towards the inclined ejector block, thus detaching it from the concave structure in advance. This eliminates the risk of collision between the concave structure and the inclined ejector at the source. Integrating the side-pulling and ejection functions eliminates the need for an additional power source, simplifies the mold structure, and adapts to the demolding requirements of complex concave structures.

[0010] Preferably, a sliding plate is slidably connected to the ejector plate, and the inclined guide rod passes through the ejector plate and is slidably connected to the sliding plate along the direction perpendicular to the mold opening direction. When the sliding plate slides to abut against the ejector plate, the side pull block slides to the limit position inward towards the inclined ejector block.

[0011] By adopting the above technical solution, the sliding plate is connected to the inclined guide rod and the ejector plate to realize the step of "side pulling is completed and then ejection". When the sliding plate abuts the ejector plate, the side pulling block is just pulled to the limit position, and the ejector plate can continue to eject, reducing the possibility of collision caused by misalignment. The side pulling is driven by the ejector plate, without the need for additional mechanisms, which simplifies the mold layout.

[0012] Preferably, the sliding plate is provided with a magnetic block, and the moving mold is provided with an adsorption block that can magnetically engage with the magnetic block. When the ejector plate is closed and reset, the adsorption block drives the magnetic block to move the sliding plate away from the ejector plate to the reset position.

[0013] By adopting the above technical solution, the magnetic block and the adsorption block work together to automatically drive the sliding plate to reset the side pulling block. The magnetic reset ensures that the side pulling block returns to the initial forming position accurately, ensuring the forming accuracy of the concave structure. At the same time, it provides a basis for the next anti-collision action of first pulling the core and then ejecting, and there is no mechanical rigid collision, which reduces component wear and extends the service life of the mechanism.

[0014] Preferably, it also includes a molding block, which is detachably connected to the inclined top block. The inclined top block has a limiting channel, and the side-pull inclined guide block slides along the inner wall of the limiting channel. When the molding block is installed on the inclined top block, the molding block closes the limiting channel, and the molding block is provided with a sliding groove, in which the side-pull block is slidably connected.

[0015] By adopting the above technical solution, the dual guidance of the side-pulling guide block constrained by the limiting channel and the sliding groove constrains the side-pulling block, ensuring precise matching between the side-pulling trajectory and the concave contour, and completely avoiding residual contact after core pulling; the molding block closes the channel to prevent plastic seepage and ensure the stability of the mechanism; and the modular design simplifies assembly and maintenance, reducing costs. Its core function is to provide a precise, stable, and durable foundation for the side-pulling mechanism, directly serving the need for collision-free and highly efficient demolding of the concave structure of the motorboat's cover parts.

[0016] Preferably, it also includes a sleeve, which is mounted on the inclined top block. The inclined guide rod is coaxial and slidably connected inside the sleeve. The inclined guide rod is provided with an abutment rod, which passes through the bottom surface of the sleeve and is slidably connected to the side-pull inclined guide block. When the side-pull block moves into the inclined top block to the limit position, the inclined guide rod abuts against the bottom surface of the sleeve.

[0017] By adopting the above technical solution, the side-pulling limit position is controlled by rigid limit, and when the inclined guide rod moves to abut against the bottom surface of the sleeve, the continued movement of the inclined guide rod pushes out the top rod.

[0018] Preferably, the side pull block includes a sliding part, a forming part, and a bolt part. The sliding part has a slot that can be inserted and engaged with the forming part. When the forming part is inserted and engaged with the slot, the bolt part can pass through the sliding part into the slot and be threadedly connected to the forming part.

[0019] By adopting the above technical solution, the detachable design allows for the individual replacement of the molding part, ensuring that it always maintains a precise fit with the concave structure and can be completely detached from the concave structure when pulling the core, thus avoiding the risk of collision caused by insufficient precision of the molding part from the source.

[0020] Preferably, the first inclined surface is provided with an inclined slide rail, and the second inclined surface is provided with an inclined slide groove adapted to the inclined slide rail, wherein the inclined slide rail is slidably embedded in the inclined slide groove.

[0021] By adopting the above technical solution, the interlocking structure of the inclined slide rail and the inclined slide groove forms a rigid constraint with a concave-convex fit, which forces the side-pulling inclined guide block and the side-pulling block to slide precisely relative to each other along the preset direction of the inclined surface, avoiding movement and deviation.

[0022] The main technical effects of this invention are reflected in the following aspects:

[0023] 1. The accelerated ejection structure of the present invention, through the inclined surface transmission design of the accelerated inclined rod, the accelerated inclined guide block and the accelerated ejector rod, converts the conventional ejection motion of the ejector plate into the inclined and axial compound accelerated motion of the accelerated ejector rod, so that the plastic part can obtain a higher ejection speed than the conventional ejection speed in the early stage of demolding, and pulls a safe distance from the inclined ejector in advance, reducing the possibility of the inclined ejector scraping or colliding with the upper concave structure during the subsequent inclined motion.

[0024] 2. This invention addresses the "forming fit constraint" between the concave structure and the inclined ejector, preventing direct ejection from causing the inclined ejector to get stuck due to the concavity. When the ejection action is initiated, this structure, through the side-pulling block and the side-pulling inclined guide block, pushes the side-pulling inclined guide block with the inclined guide rail, causing the side-pulling block to retract inwards towards the inclined ejector block, thus prematurely disengaging from the concave structure and eliminating the risk of collision between the concave structure and the inclined ejector at the source. Integrating the side-pulling and ejection functions eliminates the need for an additional power source, simplifies the mold structure, and adapts to the demolding requirements of complex concave structures.

[0025] 3. The sliding plate of the present invention is associated with the inclined guide rod and the ejector plate to realize the step of "side pulling is completed and then ejection". When the sliding plate abuts the ejector plate, the side pulling block is just pulled to the limit position, and the ejector plate can continue to eject, reducing the possibility of collision caused by misalignment. The side pulling is driven by the ejector plate, without the need for additional mechanisms, simplifying the mold layout. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the moving model structure in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the core board structure according to an embodiment of this application.

[0029] Figure 4 This is a schematic diagram of the inclined top block structure in an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of the ejector plate structure in an embodiment of this application.

[0031] Figure 6 This is a schematic diagram of the accelerated ejection structure in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the accelerated ejection structure in the mold closing state according to an embodiment of this application.

[0033] Figure 8 This is a schematic diagram of the accelerated ejection structure during mold opening in an embodiment of this application.

[0034] Figure 9 This is a schematic diagram of the side-drawing oblique guide block structure in an embodiment of this application.

[0035] Figure 10 This is a schematic diagram of the accelerated side-pulling structure on the core plate according to an embodiment of this application.

[0036] Figure 11 It is along Figure 10 Enlarged view of point A in the middle.

[0037] Figure 12 This is a schematic diagram of the accelerated side-pulling structure in the mold-closing state according to an embodiment of this application.

[0038] Figure 13 This is a schematic diagram of the accelerated side-pull structure during mold opening in an embodiment of this application.

[0039] Figure 14 This is a schematic diagram of the fixed mold structure in an embodiment of this application.

[0040] Figure 15 This is a schematic diagram of the product structure according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached drawings: 1. Moving mold; 2. Fixed mold; 3. Core plate; 4. Base plate; 5. Angled ejector block; 6. Ejector plate; 7. Angled rod; 8. Sliding seat; 9. Angled guide rail; 10. Accelerating ejection structure; 11. Accelerating ejector rod; 12. Accelerating angled rod; 13. Accelerating angled guide block; 14. Spring; 15. Inclined guide surface; 16. Molding block; 17. Sliding groove; 18. Limiting channel; 19. Accelerating side pull structure; 20. Side pull block; 21. Side pull angled guide block; 22. Angled guide rod; 23. First inclined surface; 24. Second inclined surface; 25. Sliding plate; 26. Sleeve; 27. Abutment rod; 28. Sliding part; 29. ​​Molding part; 30. Bolt part; 32. Adsorption block; 33. Angled slide rail; 34. Angled slide groove; 35. External concave structure; 36. Internal concave structure. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1-15 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0043] This application discloses an injection molding die for a plastic cover part of a motorboat and its accelerated ejection structure.

[0044] Reference Figure 1 , Figure 2 and Figure 3 This embodiment of a jet ski plastic cover injection molding mold and its accelerated ejection structure includes a moving mold 1 and a fixed mold 2. The moving mold 1 includes a core plate 3 and a base plate 4. An inclined ejector block 5 is slidably connected to the core plate 3 along the mold opening direction inclined to the mold. An ejector plate 6 is slidably connected between the core plate 3 and the base plate 4 along the mold opening direction. The inclined ejector block 5 and the ejector plate 6 are connected by several inclined rods 7. That is, one end of several inclined rods 7 passes through the core plate 3 along the sliding direction of the inclined ejector block 5 and is fixedly connected to the inclined ejector block 5. Several sliding seats 8 are provided on the ejector plate 6. Inclined guide rails 9 are provided on the several sliding seats 8. The other end of several inclined rods 7 is slidably connected to the inclined guide rails 9. When the mold is closed, the end of the inclined rod 7 is located on the side of the inclined guide rail 9 that is relatively far away from the base plate 4.

[0045] Reference Figure 4, Figure 5 and Figure 6 It also includes an accelerated ejection structure 10, which includes an accelerated ejector rod 11, an accelerated inclined rod 12, and an accelerated inclined guide block 13. The accelerated inclined guide block 13 is slidably connected to the ejector plate 6 along the mold opening direction perpendicular to the mold, and a spring 14 is installed on the accelerated inclined guide block 13. One end of the spring 14 abuts against the accelerated inclined guide block 13, and the other end abuts against the mating block that mates with the ejector plate 6. The spring 14 always drives the accelerated inclined guide block 13 to move toward the final position after mold opening. The upper part has an inclined guide surface 15. The acceleration rod 12 is fixedly connected to the moving mold 1, and the acceleration rod 12 passes through the acceleration guide block 13 along the mold opening direction inclined to the mold. One end of the acceleration ejector rod 11 passes through and is slidably connected to the moving mold 1 along the mold opening direction, and the other end is slidably connected to the inclined guide surface 15 of the acceleration guide block 13 along the mold opening direction. When the mold is closed, the end of the acceleration ejector rod 11 is located on the side of the inclined guide surface 15 of the acceleration guide block 13 that is relatively close to the bottom plate 4.

[0046] Reference Figure 7 , Figure 8 and Figure 9 Since the acceleration ramp 12 is fixed to the moving mold 1 and does not move with the ejector plate 6, when the ejector plate 6 moves, the inclined hole of the acceleration ramp guide block 13 will be forced to slide along the inclined surface of the acceleration ramp 12, causing the acceleration ramp guide block 13 to generate a lateral displacement perpendicular to the mold opening direction. This causes the end of the acceleration ejector rod 11 to move towards the inclined guide surface 15 on the side relatively away from the base plate 4, transforming it into a compound motion of the acceleration ejector rod 11 located on the side of the core plate 3 along the mold opening direction. It performs a conventional ejection motion with the ejector plate 6, and also obtains additional acceleration thrust due to the inclined surface transmission, ultimately achieving a compound accelerated ejection of conventional ejection speed and inclined surface amplification speed.

[0047] Reference Figure 7 and Figure 8 The accelerated ejection structure 10, through the inclined surface transmission design of the accelerated inclined rod 12, the accelerated inclined guide block 13 and the accelerated ejector rod 11, converts the conventional ejection motion of the ejector plate 6 into the inclined and axial compound acceleration motion of the accelerated ejector rod 11. This allows the plastic part to obtain a release speed higher than the conventional ejection speed in the early stage of demolding, thus creating a safe distance from the inclined ejector in advance and reducing the possibility of the inclined ejector scraping or colliding with the upper concave structure 36 during the subsequent inclined motion.

[0048] Reference Figure 10 and Figure 11 It also includes a molding block 16, which is detachably connected to the inclined top block 5 by bolts, and the molding block 16 is provided with a sliding groove 17. The inclined top block 5 is provided with a limiting channel 18. When the molding block 16 is installed on the inclined top block 5, the inclined top block 5 closes the limiting channel 18.

[0049] ReferenceFigure 11 and Figure 13 It also includes an accelerating side-pull structure 19, which includes a side-pull block 20, a side-pull inclined guide block 21, and an inclined guide rod 22. The side-pull block 20 is used to form the concave structure 35 of the inner wall of the product. The side-pull block 20 is slidably connected to the inclined top block 5 along the axial direction of the concave structure 35 of the plastic part, and it is provided with a first inclined surface 23. An inclined guide rail that can cooperate with the sliding groove 17 is fixedly connected to the side-pull block 20. The inclined guide rail is slidably connected in the sliding groove 17. The side-pull inclined guide block 21 slides along the inner wall of the limiting channel 18, and it is provided on the second inclined surface 24 that abuts against the first inclined surface 23. A sliding plate 25 is slidably connected to the ejector plate 6 along its sliding direction. The sliding plate 25 is located between the ejector plate 6 and the base plate 4. One end of the inclined guide rod 22 passes through the ejector plate 6 and is slidably connected to the sliding plate 25 along the direction perpendicular to the mold opening direction. The other end of the inclined guide rod 22 passes through the core plate 3 and is slidably connected to the side-pulling inclined guide block 21.

[0050] Reference Figure 13 During the mold opening process, the ejector roller on the injection molding machine first pushes the sliding plate 25 to slide independently along the surface of the ejector plate 6 towards one side of the ejector plate 6, at which point the ejector plate 6 is stationary. The sliding plate 25 pushes the side-pulling inclined guide block 21 to slide along the limiting channel 18 of the inclined ejector block 5 through the inclined guide rod 22. When the side-pulling inclined guide block 21 slides, the second inclined surface 24 presses the first inclined surface 23 of the side-pulling block 20, converting the force into the axial movement of the side-pulling block 20; the side-pulling block 20 is guided by the sliding groove 17 and contracts inward into the inclined ejector block 5, and the molding part 29 gradually separates from the outer concave structure 35 of the product.

[0051] Reference Figure 10 To address the "forming fit constraint" between the concave structure 36 and the inclined ejector, where direct ejection would cause the concave structure to jam the inclined ejector, this structure, through the side pull block 20 and the side pull inclined guide block 21, and the inclined guide rod 22 pushing the side pull inclined guide block 21 during ejection, drives the side pull block 20 to retract into the inclined ejector block 5 via the inclined guide rail, thus prematurely disengaging from the concave structure 36 and eliminating the possibility of collision between the concave structure and the inclined ejector. Integrating the side pull and ejection eliminates the need for an additional power source, simplifies the mold structure, and adapts to the demolding requirements of complex concave structures.

[0052] Reference Figure 11 The molding block 16 seals the limiting channel 18, and the side-pulling block 20 is slidably connected within the sliding groove 17. The dual guidance of the limiting channel 18 constraining the side-pulling guide block 21 and the sliding groove 17 constraining the side-pulling block 20 ensures precise matching between the side-pulling trajectory and the concave contour, completely avoiding residual contact after core pulling. The molding block 16 seals the channel, preventing plastic seepage and ensuring mechanism stability. Modular design simplifies assembly and maintenance, reducing costs. Its core function is to provide a precise, stable, and durable foundation for the side-pulling mechanism, directly serving the collision-free and highly efficient demolding requirements of the concave structure 36 of the motorboat's cover.

[0053] Reference Figure 13 It also includes a sleeve 26, which is mounted on the inclined top block 5 by screws. An inclined guide rod 22 is coaxially and slidably connected inside the sleeve 26. An abutment rod 27 is fixedly connected to the end of the inclined guide rod 22 away from the sliding plate 25. The diameter of the abutment rod 27 is smaller than the diameter of the inclined guide rod 22. The abutment rod 27 passes through the bottom surface of the sleeve 26 and is slidably connected to the side-pull inclined guide block 21. When the side-pull block 20 moves towards the inclined top block 5 to its limit position, the inclined guide rod 22 abuts against the bottom surface of the sleeve 26. The side-pull limit position is controlled by a rigid limit switch, and when the inclined guide rod 22 moves to abut against the bottom surface of the sleeve 26, the continued movement of the inclined guide rod 22 pushes out the top rod.

[0054] Reference Figure 11 The side pull block 20 includes a sliding part 28, a forming part 29, and a bolt part 30. The sliding part 28 has a slot 31 that can be inserted and engaged with the forming part 29. When the forming part 29 is inserted and engaged with the slot 31, the bolt part 30 can pass through the sliding part 28 into the slot 31 and be threadedly connected to the forming part 29. The detachable design allows the forming part 29 to be replaced individually, ensuring that it always maintains a precise fit with the concave structure 36 and can be completely disengaged from the concave structure when pulling the core, thus avoiding the risk of collision caused by insufficient precision of the forming part 29.

[0055] Reference Figure 10 When the sliding plate 25 slides to abut against the ejector plate 6, the side pull block 20 slides inward to its limit position. Replacement does not require disassembling the sliding part 28; only the old forming part 29 needs to be removed via threads, and the new forming part 29 installed. This significantly reduces mold downtime and improves production efficiency. The sliding plate 25 is connected to the inclined guide rod 22 and the ejector plate 6, enabling the "side pull completed, then ejected" process. When the sliding plate 25 abuts against the ejector plate 6, the side pull block 20 is precisely pulled to its limit position, allowing the ejector plate 6 to continue ejecting. This reduces the possibility of collisions caused by misalignment. The side pull is driven by the ejector plate 6, eliminating the need for additional mechanisms and simplifying the mold layout.

[0056] Reference Figure 15 A magnetic block is embedded in the sliding plate 25. An adsorption block 32 that can magnetically engage with the magnetic block is fixedly connected to the base plate 4 of the moving mold 1. When the ejector plate 6 closes and resets, the adsorption block 32 drives the magnetic block to move the sliding plate 25 away from the ejector plate 6 until it is reset. Through the cooperation of the magnetic block and the adsorption block 32, the sliding plate 25 is automatically driven to drive the side pull block 20 to reset. The magnetic reset ensures that the side pull block 20 returns to its initial forming position accurately, ensuring the forming accuracy of the concave structure 36. At the same time, it provides a basis for the next anti-collision action of first pulling the core and then ejecting, and there is no mechanical rigid collision, which reduces component wear and extends the service life of the mechanism.

[0057] Reference Figure 11A sloping slide rail 33 is fixedly connected to the second inclined surface 24, and a sloping groove 34 adapted to the sloping slide rail 33 is provided on the first inclined surface 23. The sloping slide rail 33 is slidably embedded in the sloping groove 34. The fitting structure of the sloping slide rail 33 and the sloping groove 34 forms a rigid constraint with a concave-convex fit, forcing the side-pulling guide block 21 and the side-pulling block 20 to slide relative to each other only along the preset direction of the inclined surface, reducing the possibility of movement and deviation.

[0058] Reference Figure 3 and Figure 4 In summary, the mold opening and closing processes of this mold are as follows:

[0059] Mold opening process: The mold starts to open, and the fixed mold 2 separates from the moving mold 1 along the mold opening direction. The plastic part initially fits onto the moving mold 1 and the inclined ejector block 5. The injection molding machine's ejector roller first pushes the sliding plate 25, causing the inclined guide rod 22 to push the side-pulling inclined guide block 21. Through the inclined guide rail, the side-pulling block 20 is driven to retract into the inclined ejector block 5, completely separating from the upper concave structure 36 of the plastic part. The accelerated ejection structure 10, through the inclined surface transmission, causes the accelerated ejector rod 11 to push the plastic part with a compound acceleration motion, pulling it away from the inclined ejector block 5 in advance to avoid collision. The ejector plate 6 continues to move, driving the inclined ejector block 5 to eject obliquely, and with the help of the accelerated ejector rod 11, the plastic part is completely pushed out of the moving mold 1, completing the demolding.

[0060] Mold Closing Process: The fixed mold 2 initiates mold closing and moves towards the moving mold 1. Simultaneously, the ejector plate 6 resets along the mold closing direction, causing the angled ejector block 5 and the accelerating ejector rod 11 to return to their original positions. After the ejector plate 6 resets, the magnetic suction block 32 drives the sliding plate 25 away from the ejector plate 6 via the magnetic suction block. The sliding plate 25 then drives the angled guide rod 22 to pull the side-pulling angled guide block 21 back to its original position, thereby pushing the side-pulling block 20 outward to the molding position. The fixed mold 2 and the moving mold 1 are completely fitted together, forming a closed injection mold 2, ready for the next injection molding.

[0061] Reference Figure 3 and Figure 4 This mold, designed for the complex concave and convex structures 35 of motorboat plastic covers, reduces the possibility of interference and collision during demolding through a collaborative design of "first side-pull separation, then accelerated ejection": During mold opening, the sliding plate 25 first drives the side-pull block 20 to precisely retract and separate from the concave portion, then drives the ejector plate 6 to accelerate ejection, allowing the plastic part to quickly move away from the angled ejector. Multiple guides ensure accurate molding and demolding trajectories and stable dimensional tolerances. Integrated power simplifies the structure, and modular design reduces maintenance costs, improving both product quality and mass production efficiency.

[0062] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A plastic body panel injection mold for a motorboat and its accelerated ejection structure, comprising a moving mold (1) and a fixed mold (2), wherein an ejector plate (6) is slidably connected to the moving mold (1), and an inclined ejector block (5) is slidably connected to the moving mold (1), the inclined ejector block (5) and the ejector plate (6) are connected by a plurality of inclined rods (7), characterized in that: It also includes an accelerated ejection structure (10), which includes an accelerated ejector rod (11), an accelerated inclined rod (12), and an accelerated inclined guide block (13). The accelerated inclined guide block (13) is slidably connected to the ejector plate (6) perpendicular to the mold opening direction. The accelerated inclined rod (12) is fixedly connected to the moving mold (1), and the accelerated inclined rod (12) passes through and is slidably connected to the accelerated inclined guide block (13) along the mold opening direction inclined to the mold. The accelerated ejector rod (11) passes through and is slidably connected to the moving mold (1) along the mold opening direction inclined to the mold. It also includes an accelerated side-pull structure (19), which includes a side-pull block (20), a side-pull inclined guide block (21), and an inclined guide rod (22). The side pull block (20) is used to form the concave structure (35) of the inner wall of the product. The side pull block (20) is slidably connected to the inclined top block (5) in the horizontal direction and has a first inclined surface (23). The side pull inclined guide block (21) is slidably connected to the inclined top block (5) and has a second inclined surface (24) that abuts against the first inclined surface (23). One end of the inclined guide rod (22) is slidably connected to the side pull inclined guide block (21), and the other end of the inclined guide rod (22) is installed on the ejector plate (6). The ejector plate (6) is also slidably connected to the sliding plate (25). The inclined guide rod (22) passes through the ejector plate (6) and is slidably connected to the sliding plate (25) in the direction perpendicular to the mold opening direction. When the sliding plate (25) slides to abut against the ejector plate (6), the side pull block (20) slides to the limit position in the inclined top block (5). During the mold opening process, the ejector roller on the injection molding machine first pushes the sliding plate (25) to slide independently along the surface of the ejector plate (6) towards the ejector plate (6), at which point the ejector plate (6) is stationary; When the side-pulling inclined guide block (21) slides, the second inclined surface (24) presses the first inclined surface (23) of the side-pulling block (20), converting the force into the axial movement of the side-pulling block (20); the side-pulling block (20) is guided by the sliding groove (17) and shrinks into the inclined top block (5), and the forming part (29) gradually separates from the product's concave structure (35); When the mold is opened, the sliding plate (25) first drives the side pull block (20) to precisely shrink and disengage from the recess, and then drives the ejector plate (6) to start and accelerate the ejection, so that the plastic part can quickly move away from the inclined ejector.

2. The injection molding die for a motorboat plastic cover and its accelerated ejection structure according to claim 1, characterized in that: The sliding plate (25) is provided with a magnetic block, and the moving mold (1) is provided with an adsorption block (32) that can magnetically engage with the magnetic block. When the ejector plate (6) is closed and reset, the adsorption block (32) drives the magnetic block to move the sliding plate (25) away from the ejector plate (6) until it is reset.

3. The injection molding die for a motorboat plastic cover and its accelerated ejection structure according to claim 1, characterized in that: It also includes a molding block (16), which is detachably connected to the inclined top block (5). The inclined top block (5) has a limiting channel (18). The side-pull inclined guide block (21) slides along the inner wall of the limiting channel (18). When the molding block (16) is installed on the inclined top block (5), the molding block (16) closes the limiting channel (18). The molding block (16) is provided with a sliding groove (17). The side-pull block (20) is slidably connected in the sliding groove (17).

4. The injection molding die for a motorboat plastic cover and its accelerated ejection structure according to claim 1, characterized in that: It also includes a sleeve (26), which is installed on the inclined top block (5). The inclined guide rod (22) is coaxial and slidably connected inside the sleeve (26). The inclined guide rod (22) is provided with an abutment rod (27). The abutment rod (27) passes through the bottom surface of the sleeve (26) and is slidably connected to the side-pull inclined guide block (21). When the side-pull block (20) moves into the inclined top block (5) to the limit position, the inclined guide rod (22) abuts against the bottom surface of the sleeve (26).

5. The injection molding die for a motorboat plastic cover and its accelerated ejection structure according to claim 1, characterized in that: The side draw block (20) includes a sliding part (28), a forming part (29) and a bolt part (30). The sliding part (28) has a slot (31) that can be inserted and engaged with the forming part (29). When the forming part (29) is inserted and engaged with the slot (31), the bolt part (30) can pass through the sliding part (28) into the slot (31) and be threadedly connected to the forming part (29).

6. The injection molding die for a motorboat plastic cover and its accelerated ejection structure according to claim 1, characterized in that: The first inclined surface (23) is provided with an inclined slide rail (33), and the second inclined surface (24) is provided with an inclined slide groove (34) adapted to the inclined slide rail (33), and the inclined slide rail (33) is slidably embedded in the inclined slide groove (34).

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