A rapid exchange mold injection mold

Abstract

The utility model belongs to injection mold technical field, especially for a kind of quick replacement mould injection mold, including bottom plate, the top fixed connection of bottom plate has fixed mould.The utility model is through starting motor reverse rotation, motor is rotated by second gear and drives first gear, and first gear is moved by lead screw and drives moving plate, so that moving plate drives clamping plate to move to the direction of mutual far away, clamping plate exits from clamping slot, then remove mould ren, mould ren drives mounting plate and separates from fixed mould, and then another mounting plate on mould ren is inserted into the cavity on fixed mould by positioning hole, starting motor forward rotation, motor is rotated by second gear and drives first gear, and first gear is moved by moving plate and drives clamping plate, so that clamping plate is clamped into corresponding clamping slot, by motor drive screw rotation, realize the automatic clamping and disengagement of clamping plate, without like traditional mode and loosen multiple fasteners in turn, greatly simplify the operation step, the whole mould ren replacement process is fast and efficient.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically a quick-change injection mold. Background Technology

[0002] In modern manufacturing, injection molding, as a highly efficient and precise molding process, is widely used in numerous fields such as automotive parts, electronic product casings, medical devices, and daily necessities. Injection molds, as the core equipment in injection molding, directly determine the dimensional accuracy, surface quality, and production efficiency of injection-molded products. With increasingly fierce market competition and growing consumer demand for personalized and diversified products, injection molding manufacturers are required to respond quickly to market changes and promptly launch products of different styles and specifications.

[0003] Because injection molds are used frequently, the internal mold cores wear out severely and cannot achieve the required shape and size. Therefore, the mold cores need to be replaced frequently. Mold core replacement usually relies on bolts for tightening and loosening. The operation requires the use of specialized equipment such as wrenches, which is cumbersome and time-consuming. During the disassembly process, multiple fasteners need to be loosened one by one, resulting in low mold change efficiency and difficulty in meeting the needs of high-frequency production changes. Therefore, we propose a quick mold change injection mold to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a quick-change injection mold, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A quick-change injection mold includes a base plate, a fixed mold fixedly connected to the top of the base plate, a cavity formed in the fixed mold, lead screws rotatably connected to the inner walls of both sides of the cavity, a movable plate threaded onto the lead screws, a retaining plate welded to one side of the movable plate, a transmission box fixedly connected to the left side of the fixed mold, a motor fixedly connected to the left side of the transmission box, one end of one of the lead screws extending into the transmission box and fixedly connected to a first gear, the output shaft of the motor extending into the transmission box and fixedly connected to a second gear, the second gear meshing with the first gear, a positioning hole formed in the top inner wall of the cavity, a mold core formed in the top of the fixed mold, a mounting plate fixedly connected to the bottom of the mold core, slots formed on both sides of the mounting plate, the slots engaging with corresponding retaining plates, and the outer side of the mounting plate in movable contact with the inner wall of the positioning hole.

[0009] Furthermore, two guide rods are welded between the inner walls of the two sides of the cavity, and the guide rods are slidably connected to the movable plate.

[0010] Furthermore, four columns are welded to the top of the base plate, and the top of the four columns is welded to the same top plate.

[0011] Furthermore, a hydraulic cylinder is fixedly connected to the top plate, and a moving mold is fixedly connected to the output end of the hydraulic cylinder.

[0012] Furthermore, two limiting blocks are welded to both sides of the moving mold, and the limiting blocks are slidably connected to the corresponding columns.

[0013] Furthermore, the top of the moving mold is connected to and fixed with an injection port.

[0014] Furthermore, the ends of the two lead screws that are close to each other are fixedly connected, and the threads of the two lead screws are turned in opposite directions.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a quick-change injection mold, which has the following beneficial effects:

[0017] This invention utilizes a motor that rotates in the reverse direction. The motor, through a second gear, drives a meshing first gear to rotate. The first gear drives a lead screw to rotate, which in turn moves a movable plate. Due to the opposing directions of the threads, the movable plate moves the corresponding locking plates away from each other, causing the locking plates to disengage from their corresponding slots. The mold core is then removed, separating the mounting plate from the fixed mold. The mounting plate from another mold core is then inserted into the cavity of the fixed mold through a positioning hole. The motor is then started rotating in the forward direction. The motor, through a second gear, drives a first gear to rotate. The first gear, through the movable plate, moves the locking plates, causing them to engage in their corresponding slots. The motor-driven lead screw rotation achieves automatic locking and disengagement of the locking plates, eliminating the need to loosen multiple fasteners sequentially as in traditional methods. This significantly simplifies the operation, making the entire mold core replacement process fast and efficient. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the three-dimensional structure after removing the middle mold core;

[0021] Figure 4 This utility model Figure 3Schematic diagram of the cut-out three-dimensional structure of the central mold and transmission box;

[0022] Figure 5 This is a three-dimensional structural diagram of the connection between the mold core and the mounting plate of this utility model.

[0023] In the diagram: 1. Base plate; 2. Fixed mold; 3. Cavity; 4. Lead screw; 5. Moving plate; 6. Clamping plate; 7. Transmission box; 8. Motor; 9. First gear; 10. Second gear; 11. Positioning hole; 12. Mold core; 13. Mounting plate; 14. Slot; 15. Guide rod; 16. Column; 17. Top plate; 18. Hydraulic cylinder; 19. Moving mold; 20. Limiting block; 21. Injection port. Detailed Implementation

[0024] 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.

[0025] Example

[0026] like Figure 1-5 As shown, an embodiment of this utility model proposes a quick-change injection mold, including a base plate 1, a fixed mold 2 fixedly connected to the top of the base plate 1, a cavity 3 formed on the fixed mold 2, lead screws 4 rotatably connected to the inner walls of both sides of the cavity 3, a movable plate 5 threadedly connected to the lead screws 4, a clamping plate 6 welded to one side of the movable plate 5, a transmission box 7 fixedly connected to the left side of the fixed mold 2, a motor 8 fixedly connected to the left side of the transmission box 7, the end of one of the lead screws 4 extending into the transmission box 7 and fixedly connected to a first gear 9, the output shaft of the motor 8 extending into the transmission box 7 and fixedly connected to a second gear 10, the second gear 10 meshing with the first gear 9, a positioning hole 11 formed on the top inner wall of the cavity 3, a mold core 12 formed on the top of the fixed mold 2, a mounting plate 13 fixedly connected to the bottom of the mold core 12, slots 14 formed on both sides of the mounting plate 13, the slots 14 engaging with the corresponding clamping plates 6, and the outer side of the mounting plate 13 in movable contact with the inner wall of the positioning hole 11.

[0027] When it is necessary to replace the mold core 12, start the motor 8 to rotate in the reverse direction. The motor 8 drives the meshing first gear 9 to rotate through the second gear 10. The first gear 9 drives the lead screw 4 to rotate. The lead screw 4 drives the moving plate 5 to move. Under the action of the opposite screw rotation, the moving plate 5 drives the corresponding clamping plate 6 to move away from each other. The clamping plate 6 exits the corresponding clamping slot 14. Then, remove the mold core 12. The mold core 12 drives the mounting plate 13 to separate from the fixed mold 2. Then, insert the mounting plate 13 on another mold core 12 into the cavity 3 on the fixed mold 2 through the positioning hole 11. Start the motor 8 to rotate in the forward direction. The motor 8 drives the first gear 9 to rotate through the second gear 10. The first gear 9 drives the clamping plate 6 to move through the moving plate 5, so that the clamping plate 6 is engaged in the corresponding clamping slot 14. The motor 8 drives the lead screw 4 to rotate, realizing the automatic engagement and disengagement of the clamping plate 6. Unlike the traditional method, there is no need to loosen multiple fasteners one by one. The operation steps are greatly simplified and the whole mold core 12 replacement process is fast and efficient.

[0028] like Figure 4 As shown, in some embodiments, two guide rods 15 are welded between the inner walls of the two sides of the cavity 3, and the guide rods 15 are slidably connected to the movable plate 5.

[0029] The guide rod 15 allows the movable plate 5 to move only left and right, thus positioning the movable plate 5.

[0030] like Figure 1 As shown, in some embodiments, four columns 16 are welded to the top of the base plate 1, and the top of the four columns 16 is welded to the same top plate 17. A hydraulic cylinder 18 is fixedly connected to the top plate 17, and a moving mold 19 is fixedly connected to the output end of the hydraulic cylinder 18. Two limiting blocks 20 are welded to both sides of the moving mold 19. The limiting blocks 20 are slidably connected to the corresponding columns 16. An injection port 21 is connected to and fixed to the top of the moving mold 19.

[0031] Hydraulic cylinder 18 is activated, pushing moving mold 19 downward. Limit block 20 slides along column 16 to ensure smooth movement of moving mold 19. Moving mold 19 and fixed mold 2 close together to form a closed cavity. Molten plastic is injected into the cavity formed by moving mold 19 and fixed mold 2 through injection port 21. After cooling and solidification, the desired plastic product is formed.

[0032] like Figure 4 As shown, in some embodiments, the ends of the two lead screws 4 that are close to each other are fixedly connected, and the threads of the two lead screws 4 are in opposite directions.

[0033] Because the ends of the two lead screws 4 are fixedly connected close to each other, when the motor 8 drives one lead screw 4 to rotate, the other lead screw 4 will rotate synchronously. This allows the moving plates 5 on both sides to start moving simultaneously, ensuring that the clamping plate 6 can synchronously clamp or release the slots 14 on both sides of the mold core mounting plate 13.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-change injection mold, comprising a base plate (1), characterized in that: A fixed mold (2) is fixedly connected to the top of the base plate (1). A cavity (3) is provided on the fixed mold (2). Lead screws (4) are rotatably connected to the inner walls on both sides of the cavity (3). A moving plate (5) is threaded onto the lead screws (4). A clamping plate (6) is welded to one side of the moving plate (5). A transmission box (7) is fixedly connected to the left side of the fixed mold (2). A motor (8) is fixedly connected to the left side of the transmission box (7). The end of one of the two lead screws (4) extends into the transmission box (7) and is fixedly connected to a first gear (9). The output shaft of the motor (8) extends into the transmission box (7) and is fixedly connected to the second gear (10). The second gear (10) meshes with the first gear (9). A positioning hole (11) is provided on the top inner wall of the cavity (3). A mold core (12) is provided on the top of the fixed mold (2). A mounting plate (13) is fixedly connected to the bottom of the mold core (12). A slot (14) is provided on both sides of the mounting plate (13). The slot (14) is engaged with the corresponding card plate (6). The outer side of the mounting plate (13) is in contact with the inner wall of the positioning hole (11).

2. The quick-change injection mold according to claim 1, characterized in that: Two guide rods (15) are welded between the inner walls of the two sides of the cavity (3), and the guide rods (15) are slidably connected to the moving plate (5).

3. A quick-change injection mold according to claim 2, characterized in that: Four columns (16) are welded to the top of the base plate (1), and the top of the four columns (16) is welded to the same top plate (17).

4. A quick-change injection mold according to claim 3, characterized in that: A hydraulic cylinder (18) is fixedly connected to the top plate (17), and a moving mold (19) is fixedly connected to the output end of the hydraulic cylinder (18).

5. A quick-change injection mold according to claim 4, characterized in that: Two limiting blocks (20) are welded to both sides of the moving mold (19), and the limiting blocks (20) are slidably connected to the corresponding columns (16).

6. A quick-change injection mold according to claim 5, characterized in that: The top of the moving mold (19) is connected to and fixed with an injection port (21).

7. A quick-change injection mold according to claim 6, characterized in that: The ends of the two lead screws (4) are fixedly connected close to each other, and the threads of the two lead screws (4) are opposite.

Images