Three-time parting demolding mechanism

Abstract

The utility model relates to a three-time parting demolding mechanism which relates to the technical field of molds and is used for demolding of a mold, and the mold comprises a first push plate, a second push plate, a third push plate and a fixing plate which are arranged from top to bottom; the demolding mechanism comprises a first movable rod, a second movable rod, a fixed rod and a sliding locking assembly, the fixed rod is located between the first movable rod and the second movable rod, and the first movable rod and the second movable rod are in sliding connection with the fixed rod through the sliding locking assembly; the first push plate, the second push plate and the third push plate are arranged on the base so as to control the moving strokes of the first push plate, the second push plate and the third push plate; the first movable rod and the second movable rod are connected with the first push plate through a concave-convex fixing assembly, and the fixing rod and the fixing plate are connected through a concave-convex fixing assembly. By means of the design of the concave-convex fixing assembly, the stress area is increased, the demolding mechanism is stressed more evenly in the working process, movement is more stable in the demolding process, and stability and durability are improved.

Description

Technical Field

[0001] The present application relates to the field of die technology, and in particular, to a demoulding mechanism with three-stage parting. Background Art

[0002] In modern injection molding manufacturing, sequential ejection technology is crucial for the production of complex or multi-cavity molds. To achieve an efficient and accurate demoulding process, it is particularly necessary to develop a three-stage ejection top plate and its control mechanism. This design not only needs to ensure the accuracy of the ejection sequence but also must improve the smoothness and reliability of the entire ejection process.

[0003] In the prior art, a mechanical mold opening sequence logic control mechanism with the Chinese patent publication number CN106738738A was proposed as the control scheme for the three-stage ejection top plate. This mechanism consists of a main locking block, a left support locking block, a right support locking block, a first ejection locking groove, a sliding lock core, a second ejection locking groove, a reset travel switch, a first ejection plate reset pull rod, and a second ejection plate reset pull rod. Components such as the main locking block, the left support locking block, and the right support locking block are directly fixed to the mold by pins. However, this pin fixing method has the problem of being insecure, and the connection may become loose due to vibration during the ejection process; moreover, the force-bearing effect of pin fixing is not good, and it is easy to be damaged after long-term use. These factors directly affect the working stability of the main locking block, the left support locking block, and the right support locking block, and thus affect the quality of the product after demoulding.

[0004] Therefore, there is an urgent need to develop a new type of ejection mechanism to improve the smoothness of the ejection movement and ensure the precise control of the ejection sequence, thereby improving the stability of the production process and the overall quality of the parts. Utility Model Content

[0005] In order to improve the smoothness of the demoulding ejection movement, the present application provides a demoulding mechanism with three-stage parting.

[0006] The demoulding mechanism with three-stage parting provided by the present application adopts the following technical solutions:

[0007] A demoulding mechanism with three-stage parting is used for demoulding a mold. The mold includes a first push plate, a second push plate, a third push plate, and a fixing plate arranged from top to bottom. The demoulding mechanism includes a first movable rod, a second movable rod, a fixed rod, and a sliding locking assembly. The fixed rod is located between the first movable rod and the second movable rod. The first movable rod and the second movable rod are slidably connected to the fixed rod through the sliding locking assembly to control the moving strokes of the first push plate, the second push plate, and the third push plate. The first movable rod and the second movable rod are connected to the first push plate, and the fixed rod is connected to the fixing plate through a concave-convex fixing assembly.

[0008] By adopting the above technical solution, the present application can achieve hierarchical demolding through a three-stage parting structure, ensuring that each ejector plate can move independently, reducing interference between each other, improving demolding accuracy. During the actual demolding process, by using the design of the concave-convex fixing component, the force-bearing area is increased, making the force on the demolding mechanism more uniform during operation, enhancing stability and durability, and making the movement during demolding smoother, reducing the impact force, which helps to improve the service life and quality of the mold and the finished product; through precise structural design and function allocation, this three-stage parting demolding mechanism enhances the stability and efficiency of the system while ensuring smooth demolding of the mold, improving production efficiency.

[0009] In a specific feasible implementation, the concave-convex fixing component includes convex parts provided on the first movable rod, the second movable rod, and the fixed rod, and concave parts provided on the first ejector plate and the fixed plate; the convex parts and the concave parts are arranged corresponding to each other, the convex parts are inserted into the concave parts, and the convex parts are fixed in the concave parts by screws.

[0010] By adopting the above technical solution, through the design of the concave-convex structure, the stability of the connection part is effectively improved, loosening caused by vibration or impact is reduced, and the cooperation of the convex part and the concave part increases the force-bearing area, improving the load-bearing capacity of the overall structure, ensuring the smooth progress of the demolding process. At the same time, the stable contact reduces the friction and wear between components, extending the service life of the mold.

[0011] In a specific feasible implementation, it further includes a first stroke bolt and a second stroke bolt. The first stroke bolt passes through the fixed plate and is fixed on the third ejector plate, and a first space for the first stroke bolt to move is provided in the fixed plate; the second stroke bolt passes through the second ejector plate and is fixed on the first ejector plate, and a second space for the second stroke bolt to move is provided in the second ejector plate.

[0012] By adopting the above technical solution, the design of the stroke bolt enables the movement range of each ejector plate to be adjustable, improving the accuracy of the demolding process. Through the design of the space, users can adjust the stroke of the ejector plate according to requirements to meet the requirements of different molds, and the clear stroke limit reduces the risk of overstroke, protecting the safety of the mold and related equipment.

[0013] In a specific feasible implementation, the sliding locking component includes a lock block group corresponding to the first ejector plate and the second ejector plate respectively, and a lock groove group provided on the first movable rod, the second movable rod, and the fixed rod. The lock block group and the lock groove group are used in cooperation; by changing the positional relationship between the lock block group and the lock groove group, the movement strokes of the first ejector plate, the second ejector plate, and the third ejector plate are controlled.

[0014] By adopting the above technical solution, during the operation process, when the first push plate or the second push plate moves, the lock block group will slide within the lock groove group. When the lock block group reaches a specific position, it can be fixed by mechanical locking or friction, ensuring that the push plate remains stable at the required position and achieving precise control over the strokes of the first push plate, the second push plate, and the third push plate. Through the effective cooperation design of the lock block group and the lock groove group, precise control over the push plate stroke is achieved, enhancing the flexibility and stability of the mold operation, meeting the requirements of different molds, ensuring the stability of the push plate during the working process, and reducing misoperations caused by vibration.

[0015] In a specific feasible implementation, the contact surfaces of the lock block group and the lock groove group are both set as arc surfaces.

[0016] By adopting the above technical solution, the contact surfaces of the lock block group and the lock groove group are in an arc shape. The arc design reduces the wear between the contact surfaces and improves the service life of the components. When the push plate moves, the arc contact design effectively guides the slider to slide smoothly within the recess, avoiding jamming, and the streamlined contact surface provides a lower friction coefficient, ensuring a smoother sliding process.

[0017] In a specific feasible implementation, the lock block group includes: a first slider and a second slider disposed between the first movable rod and the fixed rod, and a third slider and a fourth slider disposed between the second movable rod and the fixed rod. The first slider and the third slider are located on the same horizontal plane and jointly used to control the movement stroke of the second push plate, and the second slider and the fourth slider are located on the same horizontal plane and jointly used to control the movement stroke of the third push plate.

[0018] By adopting the above technical solution, by adjusting the positions of the sliders, the movement ranges and strokes of the respective push plates are controlled. Through the design of the lock block group, precise stroke control over the respective push plates is achieved, meeting the requirements of different mold applications. During this process, the synchronous movement of the first slider and the third slider ensures a stable stroke of the second push plate, while the synchronous movement of the second slider and the fourth slider ensures a stable stroke of the third push plate. The slider configuration on the same horizontal plane makes the movement of the push plates more consistent, reducing errors and instability caused by unbalanced movement.

[0019] In a specific feasible implementation, the lock groove group includes: a first locking groove and a first moving groove provided on the first movable rod, a second locking groove and a second moving groove provided on the second movable rod, and a first locking stop groove and a second locking stop groove provided on the fixed rod; the first locking groove and the first locking stop groove are jointly used for allowing the first slider to move left and right, the second slider is arranged in the first moving groove and moves relatively up and down with it, the second locking groove and the second moving groove are jointly used for allowing the fourth slider to move left and right, and the third slider is arranged in the second moving groove and moves relatively up and down with it.

[0020] By adopting the above technical solution, during the demolding process, through a series of locking and unlocking mechanisms, the entire part separation process is simple and easy to operate, reducing manual intervention, improving the degree of automation, ensuring high efficiency. The free movement of the sliders at different stages enhances the flexibility of the overall system, enabling different operations to proceed more smoothly. The design of each locking groove and slider enhances the safety of the system, preventing accidental detachment or misoperation and ensuring stable operation.

[0021] In a specific feasible implementation, the installation height of the first locking groove is higher than that of the first moving groove, the installation height of the second moving groove is higher than that of the second locking groove, and the installation height of the first locking stop groove is higher than that of the second locking stop groove.

[0022] By adopting the above technical solution, the use of height difference design enhances the stability of the system, ensuring that the position of the slider remains stable during movement and preventing dislocation; the reasonable height setting enables the slider to quickly complete the locking and unlocking of the corresponding part separation work during movement, improving the overall part separation efficiency. This solution not only ensures the smooth progress of three-stage part separation but also improves the performance and reliability of the entire system.

[0023] In a specific feasible implementation, the first slider, the second slider, the third slider, and the fourth slider all include a slider body, a first rolling bearing, and a second rolling bearing, and both the first rolling bearing and the second rolling bearing protrude from the slider body.

[0024] By adopting the above technical solution, the use of rolling bearings significantly reduces the friction between the slider body and the first and second movable rods and the fixed rod, improving the movement efficiency. The protruding design enables the bearings to better disperse the load of the slider, reducing concentrated pressure, improving the overall stability, and reducing the contact area of the slider body, thereby reducing friction and making the movement smoother. Through smooth sliding and high load capacity, the operation efficiency of the overall system is improved, reducing the time loss during the production process.

[0025] In a specific feasible embodiment, it further includes a first pressing plate and a second pressing plate respectively corresponding to the second pushing plate and the third pushing plate. The first pressing plate and the second pressing plate press the first movable rod, the second movable rod, the fixed rod, and the sliding locking assembly onto the second pushing plate and the third pushing plate. The first pressing plate and the second pushing plate, and the second pressing plate and the third pushing plate are fixedly connected through a concave-convex structure and bolts.

[0026] By adopting the above technical solution, the precise alignment of each movable component during movement is ensured by the tight combination of the first pressing plate and the second pressing plate, thereby improving the accuracy of the mold splitting operation and reducing the error during the production process; the design of the concave-convex structure and bolt connection effectively enhances the fixity between components, ensuring that there is no loosening phenomenon under high load and moving conditions.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: The demolding mechanism of the present application has a series of locking and unlocking mechanisms, making the entire mold splitting process simple and easy to operate, reducing manual intervention, improving the degree of automation, ensuring high efficiency. The free movement of the slider at different stages enhances the flexibility of the overall system, enabling different operations to proceed more smoothly. The design of each locking groove and the slider enhances the safety of the system, preventing accidental detachment or misoperation and ensuring stable operation; during the actual demolding process, with the design of the concave-convex fixing component, the force-bearing area is increased, making the force on the demolding mechanism more uniform during operation, enhancing stability and durability, and making the movement more stable during demolding, reducing the impact force, which helps to improve the service life and quality of the mold and the finished product; through precise structural design and function allocation, the three-stage mold splitting and demolding mechanism ensures smooth mold demolding while enhancing the stability and efficiency of the system, improving production efficiency. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the demolding mechanism of the embodiment of the present application.

[0029] Figure 2 It is a cross-sectional view for showing the concave-convex fixing component.

[0030] Figure 3 It is a schematic structural diagram for showing the concave-convex fixing component.

[0031] Figure 4 It is a schematic structural diagram for showing the structure of the sliding locking component and the mold.

[0032] Figure 5 It is a schematic structural diagram for showing the sliding locking component.

[0033] Figure 6It is a cross-sectional view for showing the first and second stroke bolts.

[0034] Figure 7 It is a diagram for showing the positional relationship between the lock block group and the lock groove group in the initial state.

[0035] Figure 8 It is a diagram for showing the positional relationship between the lock block group and the lock groove group after the first mold splitting.

[0036] Figure 9 It is a diagram for showing the positional relationship between the lock block group and the lock groove group after the second mold splitting.

[0037] Figure 10 It is a diagram for showing the positional relationship between the lock block group and the lock groove group after the third mold splitting.

[0038] Explanation of reference numerals: 1, mold; 11, first push plate; 12, second push plate; 13, third push plate; 14, fixed plate; 15, first space; 16, second space; 2, first movable rod; 21, first locking groove; 22, first movable groove; 3, second movable rod; 31, second locking groove; 32, second movable groove; 4, fixed rod; 41, first locking stop groove; 42, second locking stop groove; 5, sliding locking assembly; 51, lock block group; 52, lock groove group; 53, first slider; 54, second slider; 55, third slider; 56, fourth slider; 57, slider body; 58, first rolling bearing; 59, second rolling bearing; 6, concave-convex fixing assembly; 61, convex part; 62, concave part; 63, screw; 7, first stroke bolt; 8, second stroke bolt; 9, first pressing plate; 10, second pressing plate. Detailed implementation manners

[0039] The following further describes the present application in detail Figures 1-10 in conjunction with the appended

[0040] Referring to Figure 1 and Figure 2 , an embodiment of the present application discloses a demolding mechanism with three mold splittings for demolding the mold 1. The mold 1 includes a first push plate 11, a second push plate 12, a third push plate 13 and a fixed plate 14 arranged from top to bottom;

[0041] The demolding mechanism includes a first movable rod 2, a second movable rod 3, a fixed rod 4, and a sliding locking assembly 5. The first movable rod 2, the second movable rod 3, and the fixed rod 4 are all vertically arranged. The fixed rod 4 is located between the first movable rod 2 and the second movable rod 3. The first movable rod 2 and the second movable rod 3 are slidably connected to the fixed rod 4 through the sliding locking assembly 5 to control the moving stroke of the first push plate 11, the second push plate 12, and the third push plate 13. The first movable rod 2 and the second movable rod 3 are connected to the first push plate 11, and the fixed rod 4 is connected to the fixed plate 14 through a concave-convex fixing assembly 6. In this embodiment, a thimble assembly is further included. The thimble assembly sequentially passes through the fixed plate 14, the third push plate 13, and the second push plate 12 and is fixed on the first push plate 11. The thimble assembly is used to drive the first push plate 11 to move up and down.

[0042] Referring to Figure 2 and Figure 3 , the concave-convex fixing assembly 6 includes convex parts 61 provided on the first movable rod 2, the second movable rod 3, and the fixed rod 4, and concave parts 62 provided on the first push plate 11 and the fixed plate 14. The convex parts 61 and the concave parts 62 are correspondingly arranged. The convex parts 61 are inserted into the concave parts 62, and the convex parts 61 are fixed in the concave parts 62 by screws 63. By using the design of the concave-convex parts, the stability of the connection part is effectively improved, the looseness caused by vibration or impact is reduced, and the matching of the convex parts 61 and the concave parts 62 increases the force-bearing area, improves the load-bearing capacity of the overall structure, ensures the smooth progress of the demolding process, and at the same time, the stable contact reduces the friction and wear between parts and extends the service life of the mold 1.

[0043] Referring to Figure 3 , a first pressing plate 9 and a second pressing plate 10 corresponding to the second push plate 12 and the third push plate 13 are further included. The first pressing plate 9 and the second pressing plate 10 press the first movable rod 2, the second movable rod 3, the fixed rod 4, and the sliding locking assembly 5 on the second push plate 12 and the third push plate 13. In this embodiment, the first pressing plate 9 and the second pressing plate 10 are provided with grooves corresponding to the first movable rod 2, the second movable rod 3, the fixed rod 4, and the sliding locking assembly 5. The first pressing plate 9 and the second push plate 12, and the second pressing plate 10 and the third push plate 13 are connected and fixed through a concave-convex structure and bolts. In this embodiment, the concave-convex structure includes convex blocks provided on the first pressing plate 9 and the second pressing plate 10, and grooves provided on the second push plate 12 and the third push plate 13. The convex blocks are inserted into the corresponding grooves and then connected and fixed by bolts.

[0044] The first pressing plate 9 and the second pressing plate 10 provide additional stable support by pressing the first movable rod 2, the second movable rod 3, the fixed rod 4 and the sliding locking assembly 5, reducing vibration and displacement during operation. The design of the concave-convex structure and bolt connection effectively enhances the fixation between components, ensuring that there is no loosening phenomenon under high load and moving conditions; the close combination of the first pressing plate 9 and the second pressing plate 10 ensures the precise alignment of each movable component during movement, thereby improving the accuracy of the mold opening operation and reducing errors during the production process; by providing stable support and firm connection, the system can complete the mold opening task faster and more efficiently, reducing downtime caused by unstable components and improving the overall production efficiency;

[0045] During assembly, the convex portions 61 on the first movable rod 2, the second movable rod 3 and the fixed rod 4 are inserted into the corresponding concave portions 62 on the first push plate 11 and the fixed plate 14, and the convex portions 61 are firmly fixed in the concave portions 62 by screws 63 to ensure stable connection. Then, the first pressing plate 9 and the second pressing plate 10 are installed, and the convex blocks on the first pressing plate 9 and the second pressing plate 10 are correspondingly assembled with the grooves on the second push plate 12 and the third push plate 13. The convex blocks are inserted into the corresponding grooves and then fixed by bolt connection. The first pressing plate 9 and the second pressing plate 10 provide additional stable support by pressing the first movable rod 2, the second movable rod 3, the fixed rod 4 and the sliding locking assembly 5;

[0046] During the demolding operation, when demolding, the ejector pin assembly drives the first push plate 11 to move upward along the y direction, driving the first movable rod 2 and the second movable rod 3 to move upward along the y direction. During this process, the rising of the first push plate 11 drives the convex portion 61 to form a good fit with the concave portion 62, enhancing the stability of the entire mechanism. As the first push plate 11, the second push plate 12 and the third push plate 13 move, the force is efficiently transmitted through the combination of the convex portion 61 and the concave portion 62 to avoid loosening; since the first and second movable rods 3 and the fixed rod 4 are connected by the sliding locking assembly 5, their movement drives the second push plate 12 and the third push plate 13 to move upward along the y direction. When the sliding locking assembly 5 on the third push plate is disengaged from the first movable rod 2 and the second movable rod 3, the third push plate 13 will stop moving. When the sliding locking assembly 5 on the second push plate is disengaged from the first movable rod 2 and the second movable rod 3, the second push plate 12 will stop moving, completing three times of ejecting and mold opening.

[0047] Refer to Figure 4 and Figure 5, the sliding locking assembly 5 includes a lock block group 51 corresponding to the first push plate 11 and the second push plate 12 respectively, and a lock groove group 52 provided on the first movable rod 2, the second movable rod 3, and the fixed rod 4. The lock block group 51 and the lock groove group 52 are used in cooperation; by changing the positional relationship between the lock block group 51 and the lock groove group 52, the moving strokes of the first push plate 11, the second push plate 12, and the third push plate 13 are controlled;

[0048] The contact surfaces of the lock block group 51 and the lock groove group 52 are both set as arc surfaces. In this embodiment, the arc design reduces the wear between the contact surfaces and improves the service life of the assembly. When the push plate moves, the arc contact design effectively guides the slider to slide smoothly in the recess 62, avoiding jamming, and the streamlined contact surface provides a lower friction coefficient, ensuring a smoother sliding process.

[0049] The lock block group 51 includes: a first slider 53 and a second slider 54 provided between the first movable rod 2 and the fixed rod 4, and a third slider 55 and a fourth slider 56 provided between the second movable rod 3 and the fixed rod 4; the first slider 53 and the third slider 55 are located on the same horizontal plane and jointly control the moving stroke of the second push plate 12, and the second slider 54 and the fourth slider 56 are located on the same horizontal plane and jointly control the moving stroke of the third push plate 13; by adjusting the positions of the sliders, the movement ranges and strokes of the push plates are controlled. During this process, the synchronous movement of the first slider 53 and the third slider 55 ensures the stable stroke of the second push plate 12, and the synchronous movement of the second slider 54 and the fourth slider 56 ensures the stable stroke of the third push plate 13. The slider configuration on the same horizontal plane makes the movement of the push plates more consistent, reducing errors and instability caused by uneven movement;

[0050] The first slider 53, the second slider 54, the third slider 55, and the fourth slider 56 all include a slider body 57, a first rolling bearing 58, and a second rolling bearing 59. The first rolling bearing 58 and the second rolling bearing 59 both protrude from the slider body 57; the use of rolling bearings significantly reduces the friction between the slider body 57 and the first movable rod 2, the second movable rod 3, and the fixed rod 4, improving the movement efficiency. The protruding design enables the bearing to better disperse the load of the slider, reducing the concentrated pressure, improving the overall stability, and reducing the contact area of the slider body 57, thereby reducing friction and making the movement smoother. Through smooth sliding and high load capacity, the operation efficiency of the overall system is improved, reducing the time loss during the production process;

[0051] The lock groove group 52 includes: a first locking groove 21 and a first moving groove 22 provided on the first movable rod 2, a second locking groove 31 and a second moving groove 32 provided on the second movable rod 3, and a first locking stop groove 41 and a second locking stop groove 42 provided on the fixed rod 4; the first locking groove 21 and the first locking stop groove 41 are jointly used for allowing the first slider 53 to move left and right along the x direction, the second slider 54 is arranged in the first moving groove 22 and moves up and down relative thereto along the y direction, the second locking groove 31 and the second moving groove 32 are jointly used for allowing the fourth slider 56 to move left and right along the x direction, and the third slider 55 is arranged in the second moving groove 32 and moves up and down relative thereto along the y direction;

[0052] The set height of the first locking groove 21 is higher than that of the first moving groove 22, the set height of the second moving groove 32 is higher than that of the second locking groove 31, and the set height of the first locking stop groove 41 is higher than that of the second locking stop groove 42; the design of the height difference enhances the stability of the system, ensures the stable position of the slider during movement, and prevents dislocation; the reasonable height setting enables the slider to quickly complete the locking and unlocking of the corresponding part separation work during the movement process, improves the overall part separation efficiency, and this design not only ensures the smooth progress of the three-time part separation, but also improves the performance and reliability of the entire system.

[0053] Referring to Figure 6 , the demolding mechanism further includes a first stroke bolt 7 and a second stroke bolt 8. The first stroke bolt 7 passes through the fixing plate 14 and is fixed on the third push plate 13. A first space 15 for the movement of the first stroke bolt 7 is provided in the fixing plate 14; the second stroke bolt 8 passes through the second push plate 12 and is fixed on the first push plate 11. A second space 16 for the movement of the second stroke bolt 8 is provided in the second push plate 12;

[0054] In this embodiment, the first stroke bolt 7 is fixedly connected to the third push plate 13 by threaded connection and freely moves through the first space 15 of the fixing plate 14 to control the ascending and descending strokes of the third push plate 13. When the first stroke bolt 7 finishes moving through the first space 15 on the fixing plate 14, the first stroke bolt 7 stops moving. At this time, the third push plate 13 cannot move further. The moving distance of the first stroke bolt 7 is the same as the moving distance of the third push plate 13. The first stroke bolt 7 cooperates with the sliding locking assembly 5 to control the moving stroke of the third push plate 13. The second stroke bolt 8 passes through the second push plate 12 and is fixedly connected to the first push plate 11 by threaded connection, allowing it to move within the second space 16, thereby adjusting the movement range of the second push plate 12. When the second stroke bolt 8 finishes moving through the second space 16 on the second push plate 12, the second stroke bolt 8 stops moving. At this time, the second push plate 12 cannot move further. The moving distance of the second stroke bolt 8 is the same as the moving distance of the second push plate 12. The second stroke bolt 8 cooperates with the sliding locking assembly 5 to control the moving stroke of the second push plate 12. The design of the stroke bolts enables the adjustable movement ranges of the second push plate 12 and the third push plate 13, improving the accuracy of the demolding process. Through the design of the space, users can adjust the stroke of the push plate according to requirements to meet the requirements of different molds 1, and the clear stroke limits reduce the risk of over-stroke, protecting the safety of the mold 1 and related equipment.

[0055] Refer to Figures 7-10 , the first demolding and ejection operation: The first push plate 11 is driven to move upward in the y direction by the ejector pin assembly, driving the first movable rod 2 and the second movable rod 3 to move upward in the y direction. Since the first movable rod 2 and the second movable rod 3 are connected to the fixed rod 4 through the lock block group 51 and the lock groove group 52, in the initial state, the first slider 53 is locked in the first locking groove 21, the second slider 54 is fixedly abutted in the first movable groove 22, the third slider 55 is fixedly abutted in the second movable groove 32, and the fourth slider 56 is locked in the second locking groove 31. Due to the locked state of the sliders, when the first push plate 11 moves upward, it will drive the second push plate 12 and the third push plate 13 to move upward in the y direction and separate from the fixing plate 14, completing the first demolding.

[0056] Secondary parting ejection work: After moving a certain distance, the first movable rod 2 and the second movable rod 3 change their relative positions with respect to the fixed rod 4, so that the second locking groove 42 on the fixed rod 4 is aligned with the second locking groove 31 on the second movable rod 3, thereby giving the fourth slider 56 the space to move left and right in the x direction. The fourth slider 56 slides into the second locking groove 42 on the fixed rod 4 in the x direction, releasing the abutting relationship with the second movable rod 3. At the same time, the second slider 54 slides relatively in the y direction in the first movable groove 22, allowing the first push plate 11 to continue moving upward in the y direction. The first movable rod 2 and the second movable rod 3 on it are unlocked from the third push plate 13, so that the first push plate 11 only drives the second push plate 12 to move upward in the y direction to complete the secondary parting;

[0057] Tertiary parting ejection work: After continuing to move a certain distance, the first movable rod 2 and the second movable rod 3 change their relative positions with respect to the fixed rod 4, so that the first locking groove 41 on the fixed rod 4 is aligned with the first locking groove 21 on the first movable rod 2, thereby giving the first slider 53 the space to move left and right in the x direction. The first slider 53 slides into the first locking groove 41 on the fixed rod 4 in the x direction, releasing the abutting relationship with the first movable rod 2. At the same time, the third slider 55 slides in the y direction in the second movable groove 32, allowing the first push plate 11 to continue moving upward in the y direction. The first movable rod 2 and the second movable rod 3 on it are unlocked from the second push plate 12, so that the first push plate 11 only moves upward in the y direction by itself to complete the tertiary parting, thereby realizing the complete ejection of the product.

[0058] The implementation principle of the embodiment of the present application is as follows: The demoulding mechanism of the present application adopts a series of locking and unlocking mechanisms. The entire parting process is simple and easy to operate, reducing manual intervention and improving the degree of automation, ensuring high efficiency. The free movement of the sliders at different stages enhances the flexibility of the overall system, enabling different operations to proceed more smoothly. The design of each locking groove and slider enhances the safety of the system, preventing accidental detachment or misoperation and ensuring stable operation;

[0059] In the actual demoulding process, by using the design of the concave-convex fixing component 6, the force-bearing area is increased, so that the demoulding mechanism is more evenly stressed during the working process, enhancing stability and durability, and making the movement more stable during demoulding, reducing the impact force, which helps to improve the service life and quality of the mold 1 and the finished product; Through precise structural design and function allocation, this tertiary parting demoulding mechanism enhances the stability and efficiency of the system while ensuring smooth demoulding of the mold 1, improving production efficiency;

[0060] Moreover, it is used in cooperation with the sliding locking component 5 by means of the design of the stroke bolt, which can more precisely and stably control the movement range of the second push plate 12 and the third push plate 13, improve the accuracy of the demoulding process, allow users to adjust the stroke of the push plate according to requirements to meet the requirements of different moulds 1, and the clear stroke limit reduces the risk of overstroke and protects the safety of the mould 1 and related equipment.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A demolding mechanism with three-stage parting, used for demolding of a mold (1), the mold (1) comprising a first ejector plate (11), a second ejector plate (12), a third ejector plate (13) and a fixing plate (14) arranged from top to bottom; characterized in that: The demoulding mechanism includes a first movable rod (2), a second movable rod (3), a fixed rod (4), and a sliding locking assembly (5). The fixed rod (4) is located between the first movable rod (2) and the second movable rod (3). The first movable rod (2) and the second movable rod (3) are slidably connected to the fixed rod (4) through the sliding locking assembly (5) to control the moving strokes of the first push plate (11), the second push plate (12), and the third push plate (13). The first movable rod (2) and the second movable rod (3) are connected to the first push plate (11), and the fixed rod (4) is connected to the fixed plate (14) through a concave-convex fixing assembly (6).

2. The demolding mechanism with three-stage mold splitting according to claim 1, characterized in that: The concave-convex fixing assembly (6) includes convex portions (61) provided on the first movable rod (2), the second movable rod (3), and the fixed rod (4), and concave portions (62) provided on the first push plate (11) and the fixed plate (14). The convex portions (61) and the concave portions (62) are arranged in correspondence. The convex portions (61) are inserted into the concave portions (62), and the convex portions (61) are fixed in the concave portions (62) by screws (63).

3. The demolding mechanism with three-stage mold splitting according to claim 1, characterized in that: It further includes a first stroke bolt (7) and a second stroke bolt (8). The first stroke bolt (7) passes through the fixed plate (14) and is fixed to the third push plate (13). A first space (15) for the first stroke bolt (7) to move is provided in the fixed plate (14). The second stroke bolt (8) passes through the second push plate (12) and is fixed to the first push plate (11). A second space (16) for the second stroke bolt (8) to move is provided in the second push plate (12).

4. The demolding mechanism with three-stage mold splitting according to claim 1, characterized in that: The sliding locking assembly (5) includes a lock block group (51) corresponding to the first push plate (11) and the second push plate (12) respectively, and a lock groove group (52) provided on the first movable rod (2), the second movable rod (3), and the fixed rod (4). The lock block group (51) and the lock groove group (52) are used in cooperation. By changing the positional relationship between the lock block group (51) and the lock groove group (52), the moving strokes of the first push plate (11), the second push plate (12), and the third push plate (13) are controlled.

5. The demolding mechanism with three-stage mold splitting according to claim 4, characterized in that: The contact surfaces of the lock block group (51) and the lock groove group (52) are both set as arc surfaces.

6. The demolding mechanism with three-stage mold splitting according to claim 4, characterized in that: The lock block group (51) includes a first slider (53) and a second slider (54) provided between the first movable rod (2) and the fixed rod (4), and a third slider (55) and a fourth slider (56) provided between the second movable rod (3) and the fixed rod (4). The first slider (53) and the third slider (55) are located on the same horizontal plane and jointly control the moving stroke of the second push plate (12). The second slider (54) and the fourth slider (56) are located on the same horizontal plane and jointly control the moving stroke of the third push plate (13).

7. The demolding mechanism with three-stage mold splitting according to claim 6, characterized in that: The lock groove group (52) includes: a first locking groove (21) and a first movable groove (22) provided on the first movable rod (2), a second locking groove (31) and a second movable groove (32) provided on the second movable rod (3), and a first locking stop groove (41) and a second locking stop groove (42) provided on the fixed rod (4); the first locking groove (21) and the first locking stop groove (41) are jointly used for allowing the first slider (53) to move left and right, the second slider (54) is arranged in the first movable groove (22) and moves relatively up and down with it, the second locking groove (31) and the second movable groove (32) are jointly used for allowing the fourth slider (56) to move left and right, and the third slider (55) is arranged in the second movable groove (32) and moves relatively up and down with it.

8. The demolding mechanism with three-stage mold splitting according to claim 7, characterized in that: The setting height of the first locking groove (21) is higher than that of the first movable groove (22), the setting height of the second movable groove (32) is higher than that of the second locking groove (31), and the setting height of the first locking stop groove (41) is higher than that of the second locking stop groove (42).

9. The demolding mechanism with three-stage mold splitting according to claim 6, characterized in that: The first slider (53), the second slider (54), the third slider (55), and the fourth slider (56) each include a slider body (57), a first rolling bearing (58), and a second rolling bearing (59), and both the first rolling bearing (58) and the second rolling bearing (59) protrude from the slider body (57).

10. The demolding mechanism with three-stage mold splitting according to claim 1, characterized in that: It further includes a first pressing plate (9) and a second pressing plate (10) corresponding to the second push plate (12) and the third push plate (13) respectively. The first pressing plate (9) and the second pressing plate (10) press the first movable rod (2), the second movable rod (3), the fixed rod (4), and the sliding locking assembly (5) onto the second push plate (12) and the third push plate (13). The first pressing plate (9) and the second push plate (12), and the second pressing plate (10) and the third push plate (13) are fixedly connected through a concave-convex structure and bolts.

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