Injection mold with quick mold change function

Abstract

The utility model relates to injection mold technical field discloses a kind of injection mold with quick die changing function, including four limit rods and bottom plate, the outside of limit rod is slidably connected with upper die, the outside left side of upper die is fixedly connected with leakage prevention mechanism, the top of bottom plate is fixedly connected with ejection mechanism in four corners, the leakage prevention mechanism includes feed inlet, the outside of feed inlet is fixedly connected in the top left side of upper die, the inside of upper die is fixedly connected with cross placement board.In the utility model, sliding rod can extrude reset spring through limiting plate, so that reset spring is deformed, and then raw materials can enter the inside of upper die and ejection plate through cross placement board, when stopping input, reset spring is rebounded, and then limiting plate can drive sealing plate and sealing ring to be attached through sliding rod, and then raw material leakage can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with a quick mold change function. Background Technology

[0002] Injection molds with quick mold change function are suitable for the electronics industry where products are frequently iterated. They can quickly switch between different molds such as mobile phone cases and charger shells to meet the needs of rapid new product launches. They are also suitable for the automotive parts manufacturing field, where they can significantly shorten mold change time and improve production line utilization in the production of components such as bumpers and dashboards.

[0003] In existing technologies, some injection molds with rapid mold change functionality achieve efficient mold changing through standardized positioning and automated locking. The molds are equipped with standardized positioning keys and guide pillars that precisely match the positioning grooves of the injection molding machine template, ensuring rapid alignment during installation. During mold change, a hydraulic or pneumatic locking device automatically releases the old mold, and a robotic arm or moving trolley removes the old mold while simultaneously feeding in the new mold. After positioning, the locking device quickly clamps the mold.

[0004] However, during actual use, raw material leakage can cause molten plastic or additives to overflow into the equipment circuitry or mechanical parts, leading to short circuits, equipment failures, or even fire risks, threatening the personal safety of operators, polluting the workshop environment, and increasing occupational health hazards. In response to the above problems, an injection mold with a quick mold change function is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an injection mold with a quick mold change function, aiming to improve the problem that some injection molds in the prior art cannot prevent leakage of raw materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An injection mold with a quick mold change function includes four limiting rods and a base plate. An upper mold is slidably connected to the outside of the limiting rods. An anti-leakage mechanism is fixedly connected to the left side of the outside of the upper mold. An ejection mechanism is fixedly connected to the top four corners of the base plate.

[0008] The leak prevention mechanism includes a feed inlet, which is fixedly connected to the top left side of the upper mold. A cross-shaped placement plate is fixedly connected to the inside of the upper mold. A housing is fixedly connected to the top of the cross-shaped placement plate. A reset assembly is provided inside the housing. A sliding rod is slidably connected to the top of the outer side of the housing. A sealing assembly is fixedly connected to the top of the sliding rod.

[0009] As a further description of the above technical solution:

[0010] The reset assembly includes a reset spring, the outside of which is disposed inside the housing, and a limit plate is slidably connected inside the housing.

[0011] As a further description of the above technical solution:

[0012] The sealing assembly includes a sealing plate, the outer bottom end of which is fixedly connected to the outer top end of the sliding rod, and a sealing ring is fixedly connected inside the upper mold, the outer bottom end of which contacts the outer top end of the sealing plate.

[0013] As a further description of the above technical solution:

[0014] The ejection mechanism includes a mounting housing, which is fixedly connected to the four outer corners of the base plate. The mounting housing has a cavity inside, and a limit block is slidably connected inside the cavity. A connecting rod is fixedly connected to the top of the limit block, and a mounting spring is sleeved on the outside of the connecting rod. An ejection plate is fixedly connected to the top of the connecting rod.

[0015] As a further description of the above technical solution:

[0016] The ejector plate is slidably connected to the outside of a lower mold, and the lower mold is slidably connected to the outside of a limiting rod.

[0017] As a further description of the above technical solution:

[0018] Support rods are fixedly connected to the top four corners of the base plate, a top plate is fixedly connected to the top of the support rods, a hydraulic cylinder is fixedly connected to the top of the top plate, a drive rod is fixedly connected to the drive end of the hydraulic cylinder, and the outer bottom end of the upper mold is fixedly connected to the drive rod.

[0019] As a further description of the above technical solution:

[0020] The outer bottom end of the upper mold is in contact with the outer top end of the lower mold, and the outer bottom end of the upper mold is in contact with the outer top end of the ejector plate.

[0021] As a further description of the above technical solution:

[0022] One end of the reset spring is fixedly connected to the outer bottom end of the limiting plate, and the other end of the reset spring is fixedly connected to the inside of the housing.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the sliding rod can compress the return spring through the limiting plate, causing the return spring to deform. This allows the raw material to enter the upper mold and the ejector plate through the cross placement plate. When the input stops, the return spring rebounds, allowing the limiting plate to drive the sealing plate and the sealing ring to fit together through the sliding rod, thereby preventing raw material leakage.

[0025] 2. In this utility model, by driving the hydraulic cylinder, the hydraulic cylinder drives the upper mold to slide outside the limit rod through the drive rod, which in turn causes the installation spring in the deformed state to rebound, and then the connecting rod drives the ejector plate to eject the mold inside the lower mold. Because of the limit block, the connecting rod will not drive the ejector plate to detach from the interior of the mounting housing. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an injection mold with a quick mold change function proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the upper mold of an injection mold with a quick mold changing function proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the ejector plate of an injection mold with a quick mold change function proposed in this utility model.

[0030] Legend:

[0031] 1. Base plate; 2. Support rod; 3. Top plate; 4. Hydraulic cylinder; 5. Drive rod; 6. Upper mold; 7. Feed port; 8. Cross placement plate; 9. Housing 1; 10. Return spring; 11. Limiting plate; 12. Sliding rod; 13. Sealing plate; 14. Sealing ring; 15. Limiting rod; 16. Lower mold; 17. Ejector plate; 18. Connecting rod; 19. Mounting spring; 20. Limiting block; 21. Cavity; 22. Mounting housing. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1 to 3This utility model provides an embodiment of an injection mold with a quick mold change function, including four limiting rods 15 and a base plate 1. The limiting rods 15 not only provide precise guidance for the upper mold 6 to ensure the positional accuracy when the upper and lower molds are closed, but also withstand the lateral pressure generated during the injection process to prevent mold displacement and ensure the accuracy and quality of injection molding. The four corners of the top of the base plate 1 are reserved with precise positioning mounting holes for fixing the ejection mechanism. At the same time, the bottom of the base plate is designed with a positioning groove, which can cooperate with the positioning pin of the injection molding machine table to ensure the precise positioning of the mold when it is installed on the injection molding machine. The upper mold 6 is slidably connected to the outside of the limiting rods 15. The upper mold 6 is slidably connected to the guide rail of the limiting rods 15 through a slider. Under the drive of the hydraulic system of the injection molding machine, it can move up and down quickly to complete the mold closing, injection and mold opening actions. The left side of the upper mold 6 is fixedly connected with an anti-leakage mechanism. The four corners of the top of the base plate 1 are fixedly connected with ejection mechanisms. The ejection mechanism includes a mounting housing 22, and the bottom of the cavity 21 is provided with a through hole.

[0034] For the passage of the connecting rod 18, a limiting groove is opened on the side wall of the cavity 21 to cooperate with the protrusion of the limiting block 20, restricting the rotation of the limiting block 20 and ensuring that it can only move in a vertical linear direction within the cavity. The mounting housing 22 is fixedly connected to the four outer corners of the base plate 1. The cavity 21 is opened inside the mounting housing 22. The limiting block 20 is cylindrical, and its outer diameter is clearance-fitted with the inner diameter of the cavity 21, which can ensure that the limiting block 20 slides flexibly within the cavity and prevent it from shaking. The limiting block 20 is slidably connected inside the cavity 21, and the connecting rod 18 is fixedly connected to the outer top of the limiting block 20. During the injection molding process, the spring 19 is installed. In a compressed state, it stores elastic potential energy. After injection molding is completed and the mold opens, the mounting spring 19 releases the elastic potential energy, pushing the limit block 20 and the connecting rod 18 upward to achieve rapid demolding of the injection molded product. The connecting rod 18 is fitted with a mounting spring 19. During injection molding, the mounting spring 19 is compressed to provide reset power for the ejection mechanism. During demolding, the mounting spring 19 releases energy, pushing the ejector plate 17 to eject the injection molded product out of the mold cavity. The top of the connecting rod 18 is fixedly connected to the ejector plate 17. Under the action of the mounting spring 19, the ejector plate 17 drives the ejector rod to eject the injection molded product from the mold cavity, achieving rapid demolding of the product and improving production efficiency.

[0035] The anti-leakage mechanism includes a feed inlet 7 with a large inlet diameter for easy docking with the injection molding machine nozzle; and a smaller outlet diameter to allow the molten plastic to obtain higher pressure before entering the mold cavity, which is beneficial for plastic filling. The feed inlet 7 is externally fixedly connected to the top left side of the upper mold 6. A cross-shaped placement plate 8 is internally fixedly connected to the upper mold 6. The center of the cross-shaped placement plate 8 has a mounting hole for fixing the housing 9, ensuring the stability of the housing 9 inside the mold. The top of the cross-shaped placement plate 8 is fixedly connected to the housing 9, and the bottom of the housing 9 is fixedly connected to the top of the cross-shaped placement plate 8 by bolts. A sliding hole is provided at the top for the sliding rod 12 to pass through. The inner wall of the housing 9 is precision machined to ensure smooth sliding of the limiting plate 11 inside. A reset assembly is provided inside the housing 9, which includes a reset spring 10. One end of the reset spring 10 abuts against the bottom of the housing 9, and the other end contacts the bottom surface of the limiting plate 11.

[0036] During the injection molding process, the return spring 10 is in a compressed state, providing continuous pressure to the sealing assembly to ensure the sealing effect. The return spring 10 is externally located inside the housing 9. A limit plate 11 is slidably connected inside the housing 9. A sliding rod 12 is fixedly connected to the top center of the limit plate 11 by a threaded connection. Under the action of the return spring 10, the limit plate 11 can drive the sliding rod 12 to move up and down, realizing the opening and closing of the sealing assembly. The sliding rod 12 is slidably connected to the top of the outer part of the housing 9. Under the action of the return spring 10, the sliding rod 12 can slide up and down in the sliding hole of the housing 9, driving the sealing assembly to achieve sealing and opening actions. A sealing assembly is fixedly connected to the top of the sliding rod 12. The sealing assembly includes a sealing plate 13. The sealing plate 13 can be tightly fitted to the top of the sealing ring 14 to form a sealing surface. The sealing surface of the sealing plate 13 is precision ground to ensure good contact with the sealing ring 14. The outer bottom end of the sealing plate 13 is fixedly connected to the outer top end of the sliding rod 12. The sealing ring 14 is fixedly connected inside the upper mold 6. The sealing surface of the sealing ring 14 is precision machined and polished to ensure the sealing performance between it and the sealing plate 13. The inner diameter of the sealing ring 14 is consistent with the outlet diameter of the feed port 7 to ensure that the molten plastic can smoothly enter the mold cavity. The outer bottom end of the sealing ring 14 is in contact with the outer top end of the sealing plate 13.

[0037] Reference Figures 2 to 4The ejector plate 17 is externally slidably connected to the lower mold 16. During injection molding, the lower mold 16 and the upper mold 6 cooperate to form a closed cavity, which bears the injection pressure and molds the product. After the mold opens, the lower mold 16 remains stationary and cooperates with the ejector plate 17 to complete the product demolding. The lower mold 16 is internally slidably connected to the outside of the limit rod 15. The top four corners of the base plate 1 are fixedly connected to support rods 2. The support rods 2 connect the base plate 1 and the top plate 3 in the mold, forming a support frame for the mold, bearing the pressure generated during injection molding, and ensuring the stability of the mold structure. The top of the support rods 2 is fixedly connected to the top plate 3, and the top of the top plate 3 is fixedly connected to the hydraulic cylinder 4. During injection molding, the hydraulic cylinder 4 extends through the piston rod, pushing the drive rod 5 and the upper mold 6 downward to complete the mold closing action. After injection molding is completed... After injection molding, the piston rod retracts, driving the upper mold 6 to move upward, thus opening the mold. This is the core power source for the mold opening and closing action. The drive end of the hydraulic cylinder 4 is fixedly connected to the drive rod 5. The outer bottom of the upper mold 6 is fixedly connected to the outer bottom of the drive rod 5. The outer bottom of the upper mold 6 is in contact with the outer top of the lower mold 16. The outer bottom of the upper mold 6 is in contact with the outer top of the ejector plate 17. One end of the return spring 10 is fixedly connected to the outer bottom of the limit plate 11, and the other end of the return spring 10 is fixedly connected to the inside of the housing 9. When the sealing plate 13 is pressed down, the return spring 10 is compressed and stores elastic potential energy. After injection molding is completed, the spring releases its potential energy to push the limit plate 11, the sliding rod 12 and the sealing plate 13 to return to their original positions, so that the sealing plate 13 tightly fits the sealing ring 14, thus achieving the anti-leakage function.

[0038] Working principle: When preventing leakage of raw materials, the raw materials are injected into the upper mold 6, which compresses the sealing plate 13. This causes the sealing plate 13 to slide the sliding rod 12 inside the housing 9. The sliding rod 12 then compresses the return spring 10 through the limiting plate 11, causing the return spring 10 to deform. This allows the raw materials to enter the upper mold 6 and the ejector plate 17 through the cross placement plate 8. When the input stops, the return spring 10 rebounds, causing the limiting plate 11 to drive the sealing plate 13 to fit against the sealing ring 14 through the sliding rod 12, thus preventing the raw materials from leaking.

[0039] When ejecting the mold after molding, the hydraulic cylinder 4 is driven, which drives the upper mold 6 to slide outside the limit rod 15 via the drive rod 5. This causes the installation spring 19, which is in a deformed state, to rebound. This causes the connecting rod 18 to drive the ejector plate 17 to eject the mold inside the lower mold 16. Because of the limit block 20, the connecting rod 18 will not cause the ejector plate 17 to detach from the interior of the mounting housing 22.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection mold with a quick mold change function, comprising four limiting rods (15) and a base plate (1), characterized in that: The upper mold (6) is slidably connected to the outside of the limiting rod (15), and the leak-proof mechanism is fixedly connected to the left side of the outside of the upper mold (6). The top four corners of the bottom plate (1) are all fixedly connected to the ejection mechanism. The anti-leakage mechanism includes a feed inlet (7), which is fixedly connected to the top left side of the upper mold (6). A cross placement plate (8) is fixedly connected inside the upper mold (6). A housing (9) is fixedly connected to the top of the cross placement plate (8). A reset component is provided inside the housing (9). A sliding rod (12) is slidably connected to the top of the housing (9). A sealing component is fixedly connected to the top of the sliding rod (12).

2. The injection mold with quick mold change function according to claim 1, characterized in that: The reset assembly includes a reset spring (10), the outside of which is disposed inside the housing (9), and a limit plate (11) is slidably connected inside the housing (9).

3. An injection mold with quick mold change function according to claim 1, characterized in that: The sealing assembly includes a sealing plate (13), the outer bottom end of which is fixedly connected to the outer top end of the sliding rod (12), and a sealing ring (14) is fixedly connected inside the upper mold (6), the outer bottom end of which is in contact with the outer top end of the sealing plate (13).

4. An injection mold with quick mold change function according to claim 3, characterized in that: The ejection mechanism includes a mounting housing (22), which is fixedly connected to the four outer corners of the base plate (1). The mounting housing (22) has a cavity (21) inside, and a limit block (20) is slidably connected inside the cavity (21). A connecting rod (18) is fixedly connected to the top of the limit block (20), and a mounting spring (19) is sleeved on the outside of the connecting rod (18). An ejection plate (17) is fixedly connected to the top of the connecting rod (18).

5. An injection mold with quick mold change function according to claim 4, characterized in that: The ejector plate (17) is slidably connected to the outside of the lower mold (16), and the inside of the lower mold (16) is slidably connected to the outside of the limiting rod (15).

6. An injection mold with quick mold change function according to claim 1, characterized in that: The bottom plate (1) is fixedly connected to four corners of the top with support rods (2), the top of the support rods (2) is fixedly connected to a top plate (3), the top of the top plate (3) is fixedly connected to a hydraulic cylinder (4), the driving end of the hydraulic cylinder (4) is fixedly connected to a driving rod (5), and the outside of the upper mold (6) is fixedly connected to the bottom of the driving rod (5).

7. An injection mold with quick mold change function according to claim 5, characterized in that: The outer bottom end of the upper mold (6) is in contact with the outer top end of the lower mold (16), and the outer bottom end of the upper mold (6) is in contact with the outer top end of the ejector plate (17).

8. An injection mold with quick mold change function according to claim 2, characterized in that: One end of the reset spring (10) is fixedly connected to the outer bottom end of the limiting plate (11), and the other end of the reset spring (10) is fixedly connected to the inside of the housing (9).

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