Fine positioning wall thickness adjusting mechanism for injection mold

Abstract

The utility model discloses the precision positioning wall thickness adjusting mechanism of injection mold relates to injection mold technical field, including base, the top of base is installed with the top plate through a plurality of support columns, the top of top plate is fixedly installed with hydraulic oil cylinder, the bottom fixed mounting of hydraulic oil cylinder has the assembly plate, the utility model discloses when using, realized through the sliding mechanism and drive the sliding of upper mould kernel, need not to change mould and can adjust the wall thickness of plastic piece, reduce cost and promote efficiency, help the identification component to realize accurate regulation observation, and the demoulding assembly convenient ejection plastic piece, and the guide rod and end cap guarantee the stable safety of sliding, and the overall improvement operation accuracy and reliability.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a precision positioning wall thickness adjustment mechanism for injection molds. Background Technology

[0002] Injection molds are tools used for mass production of plastic products. They involve injecting molten plastic raw materials into a mold cavity, and after the raw materials cool and solidify, a plastic product with the same shape as the cavity is obtained. Their function is to ensure the shape accuracy, dimensional accuracy and surface quality of plastic products. They are an indispensable key equipment in the modern plastics industry and are widely used in many fields such as automobiles, electronics, and home appliances.

[0003] In the prior art, when it is necessary to change the wall thickness of plastic products, the entire mold is usually replaced. That is, a corresponding mold cavity is designed and manufactured separately for products with different wall thickness requirements. Plastic parts with different wall thicknesses are produced by replacing the mold. This method requires multiple sets of molds, which not only greatly increases production costs, but also the mold replacement process is cumbersome, requiring machine downtime for disassembly and assembly, which seriously affects production efficiency. At the same time, frequent mold replacement may also lead to unstable product quality due to installation errors. In view of this, this application proposes a precision positioning wall thickness adjustment mechanism for injection molds. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precision positioning wall thickness adjustment mechanism for injection molds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The precision positioning wall thickness adjustment mechanism for injection molds includes a base. A top plate is mounted on the top surface of the base via multiple support columns. A hydraulic cylinder is fixedly mounted on the top surface of the top plate. An assembly plate is fixedly mounted on the bottom end of the hydraulic cylinder. An upper mold is mounted on the bottom surface of the assembly plate via multiple connecting columns. An upper mold core is slidably connected inside the upper mold. A sliding mechanism is mounted on the top surface of the upper mold, and the sliding mechanism drives the upper mold core to slide. An marking component is provided on the top of the upper mold, and the marking component is used to mark the sliding distance of the upper mold core. A lower mold is fixedly mounted on the top surface of the base. A lower mold core is slidably connected inside the lower mold. A demolding component is installed inside the base.

[0007] Preferably, the sliding mechanism includes two fixed plates, which are symmetrically mounted on the top surface of the upper mold. A rotating shaft is rotatably connected between the two fixed plates. Multiple gears are symmetrically mounted on the outer side of the rotating shaft. Multiple mounting plates are fixedly mounted on the top surface of the upper mold core. Each upper mold core has a toothed plate mounted on its top surface, and each toothed plate meshes with a corresponding gear. A drive motor is fixedly mounted on the outer side of one of the fixed plates, and the output shaft of the drive motor is coaxially connected to the rotating shaft. The drive motor is a conical rotor motor.

[0008] Preferably, the marking component includes multiple scales, and each scale is fixedly installed on the side of the corresponding toothed plate away from the tooth root, and a baffle is installed on the top surface of the multiple toothed plates.

[0009] Preferably, the demolding assembly includes a cavity, which is opened inside the base. Multiple electric push rods are symmetrically installed on the bottom wall of the cavity, and the top end of each electric push rod is fixedly connected to the bottom surface of the lower mold core.

[0010] Preferably, the top surface of the upper mold core is symmetrically equipped with multiple guide rods, and the top end of each guide rod penetrates the upper mold and extends outward. The top end of each guide rod is equipped with an end cap. The top surface of the upper mold core is respectively equipped with an injection port and an vent hole. The injection port and the vent hole are connected to the upper mold core through a telescopic tube.

[0011] Preferably, a controller is fixedly installed on the outer side of the base, and multiple positioning rods are symmetrically installed on the top surface of the assembly plate, with the top end of each positioning rod penetrating the top plate and extending outward.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model achieves the function of adjusting the wall thickness of plastic parts without changing the mold by means of an upper mold core, an upper mold, a lower mold, a lower mold core, a sliding mechanism and other devices. The sliding mechanism drives the upper mold core to slide precisely, changing the cavity gap formed with the lower mold core, meeting different wall thickness requirements, reducing mold reserve costs and improving production efficiency.

[0014] 2. This utility model achieves convenient demolding and precise adjustment and observation through devices such as demolding components and marking components. The electric push rod in the demolding component pushes the lower mold core to eject the plastic part, making operation simple. The scale of the marking component intuitively displays the adjustment distance, and the baffle ensures the stability of the mechanism, improving the accuracy and reliability of operation.

[0015] 3. This utility model achieves stable guidance for the sliding of the upper mold core through devices such as guide rods and end caps, avoiding deviation, and the end caps prevent the guide rods from falling out, ensuring the safe operation of the mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the precision positioning wall thickness adjustment mechanism for the injection mold proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the sliding mechanism structure of the precision positioning wall thickness adjustment mechanism for the injection mold proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting plate and telescopic tube installation structure of the precision positioning wall thickness adjustment mechanism for injection molds proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the demolding component of the precision positioning wall thickness adjustment mechanism for injection molds proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Controller; 3. Support column; 4. Top plate; 5. Hydraulic cylinder; 6. Assembly plate; 7. Positioning rod; 8. Upper mold; 9. Lower mold; 10. Connecting column; 11. Guide rod; 12. End cap; 13. Fixing plate; 14. Drive motor; 15. Rotating shaft; 16. Gear; 17. Injection port; 18. Vent hole; 19. Tooth plate; 20. Baffle; 21. Scale; 22. Upper mold core; 23. Mounting plate; 24. Telescopic tube; 25. Lower mold core; 26. Cavity; 27. Electric push rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] This utility model provides a technical solution: such as Figure 1-4 As shown, the precision positioning wall thickness adjustment mechanism of the injection mold includes a base 1. A top plate 4 is mounted on the top surface of the base 1 via multiple support columns 3. A hydraulic cylinder 5 is fixedly mounted on the top surface of the top plate 4. An assembly plate 6 is fixedly mounted on the bottom end of the hydraulic cylinder 5. An upper mold 8 is mounted on the bottom surface of the assembly plate 6 via multiple connecting columns 10. An upper mold core 22 is slidably connected inside the upper mold 8. A sliding mechanism is mounted on the top surface of the upper mold 8, and the sliding mechanism drives the upper mold core 22 to slide. An marking component is provided on the top of the upper mold 8, and the marking component is used to mark the sliding distance of the upper mold core 22. A lower mold 9 is fixedly mounted on the top surface of the base 1. A lower mold core 25 is slidably connected inside the lower mold 9. A demolding component is installed inside the base 1.

[0023] Furthermore, the sliding mechanism includes two fixed plates 13, which are symmetrically mounted on the top surface of the upper mold 8. A rotating shaft 15 is rotatably connected between the two fixed plates 13. Multiple gears 16 are symmetrically mounted on the outer side of the rotating shaft 15. Multiple mounting plates 23 are fixedly mounted on the top surface of the upper mold core 22. A toothed plate 19 is mounted on the top surface of each upper mold core 22, and each toothed plate 19 meshes with the corresponding gear 16. A drive motor 14 is fixedly mounted on the outer side of one of the fixed plates 13, and the output shaft of the drive motor 14 is coaxially connected to the rotating shaft 15. The drive motor 14 is a conical rotor motor.

[0024] It should be noted that when the power is cut off, the output shaft of the conical rotor motor can automatically lock, thereby ensuring that the gear 16 cannot rotate, which in turn limits the tooth plate 19. It should also be noted that the minimum sliding distance of the upper mold core 22 is the length of a single tooth pitch of the tooth plate 19.

[0025] Furthermore, the marking component includes multiple scales 21, and each scale 21 is fixedly installed on the side of the corresponding toothed plate 19 away from the tooth root. The top surfaces of the multiple toothed plates 19 are jointly equipped with baffles 20. The sliding distance of the upper mold core 22 can be easily and intuitively seen through the scales 21, and the baffles 20 prevent the toothed plates 19 from disengaging from the gears 16.

[0026] Furthermore, the demolding assembly includes a cavity 26, which is formed inside the base 1. Multiple electric push rods 27 are symmetrically installed on the bottom wall of the cavity 26, and the top of each electric push rod 27 is fixedly connected to the bottom surface of the lower mold core 25.

[0027] Furthermore, multiple guide rods 11 are symmetrically installed on the top surface of the upper mold core 22, and the top end of each guide rod 11 penetrates the upper mold 8 and extends outward. An end cap 12 is installed on the top end of each guide rod 11. An injection port 17 and an vent 18 are respectively installed on the top surface of the upper mold 8. The injection port 17 and the vent 18 are connected to the upper mold core 22 through a telescopic tube 24. The guide rods 11 improve the sliding stability of the upper mold core 22, and the injection port 17 and the vent 18 are connected to external equipment.

[0028] Furthermore, a controller 2 is fixedly installed on the outer side of the base 1, and multiple positioning rods 7 are symmetrically installed on the top surface of the assembly plate 6. The top end of each positioning rod 7 penetrates the top plate 4 and extends outward, thereby improving the sliding stability of the assembly plate 6.

[0029] This utility model provides a precision positioning wall thickness adjustment mechanism for injection molds. The specific working principle is as follows: First, the required plastic part wall thickness parameters are set by the controller 2. After receiving the command, the drive motor 14 starts and its output shaft drives the rotating shaft 15 and gear 16 to rotate. The meshing transmission between the gear 16 and the toothed plate 19 causes the upper mold core 22 to slide along the inner side of the upper mold 8. The guide rod 11 moves synchronously with the upper mold core 22 to ensure a stable sliding trajectory.

[0030] During the adjustment process, the operator observes the moving distance in real time through the scale 21 on the side of the toothed plate 19. The minimum sliding distance of the upper mold core 22 is the length of a single tooth pitch of the toothed plate 19, ensuring the adjustment accuracy.

[0031] After adjustment, the drive motor 14 is de-energized, its output shaft automatically locks, the gear 16 locks and thus fixes the tooth plate 19, preventing the upper mold core 22 from shifting, and at the same time the baffle 20 prevents the tooth plate 19 from disengaging from the gear 16.

[0032] Subsequently, hydraulic cylinder 5 pushes assembly plate 6 and upper mold 8 downwards, positioning rod 7 ensures accurate mold closing, molten raw material is injected into the cavity through injection port 17 and telescopic tube 24, air is discharged through vent hole 18, after injection molding is completed, electric push rod 27 pushes lower mold core 25 to eject plastic part, completing demolding.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precision positioning wall thickness adjustment mechanism for injection molds, comprising a base (1), characterized in that, The top surface of the base (1) is equipped with a top plate (4) through multiple support columns (3). A hydraulic cylinder (5) is fixedly installed on the top surface of the top plate (4). An assembly plate (6) is fixedly installed at the bottom end of the hydraulic cylinder (5). An upper mold (8) is installed on the bottom surface of the assembly plate (6) through multiple connecting columns (10). An upper mold core (22) is slidably connected inside the upper mold (8). A sliding mechanism is installed on the top surface of the upper mold (8), and the sliding mechanism drives the upper mold core (22) to slide. An identification component is provided on the top of the upper mold (8), and the identification component is used to identify the sliding distance of the upper mold core (22). A lower mold (9) is fixedly installed on the top surface of the base (1). A lower mold core (25) is slidably connected inside the lower mold (9). A demolding component is installed inside the base (1).

2. The precision positioning wall thickness adjustment mechanism for injection molds according to claim 1, characterized in that, The sliding mechanism includes two fixed plates (13), which are symmetrically mounted on the top surface of the upper mold (8). A rotating shaft (15) is rotatably connected between the two fixed plates (13). Multiple gears (16) are symmetrically mounted on the outer side of the rotating shaft (15). Multiple mounting plates (23) are fixedly mounted on the top surface of the upper mold core (22). A toothed plate (19) is mounted on the top surface of each upper mold core (22), and each toothed plate (19) meshes with the corresponding gear (16). A drive motor (14) is fixedly mounted on the outer side of one of the fixed plates (13), and the output shaft of the drive motor (14) is coaxially connected to the rotating shaft (15). The drive motor (14) is a conical rotor motor.

3. The precision positioning wall thickness adjustment mechanism for injection molds according to claim 2, characterized in that, The marking component includes multiple scales (21), and each scale (21) is fixedly installed on the side of the corresponding toothed plate (19) away from the tooth root. The top surfaces of the multiple toothed plates (19) are jointly equipped with a baffle (20).

4. The precision positioning wall thickness adjustment mechanism for injection molds according to claim 3, characterized in that, The demolding assembly includes a cavity (26), which is located inside the base (1). Multiple electric push rods (27) are symmetrically installed on the bottom wall of the cavity (26), and the top of each electric push rod (27) is fixedly connected to the bottom surface of the lower mold core (25).

5. The precision positioning wall thickness adjustment mechanism for injection molds according to claim 4, characterized in that, The top surface of the upper mold core (22) is symmetrically equipped with multiple guide rods (11), and the top end of each guide rod (11) passes through the upper mold (8) and extends outward. The top end of each guide rod (11) is equipped with an end cap (12). The top surface of the upper mold (8) is respectively equipped with an injection port (17) and an exhaust hole (18). The injection port (17) and the exhaust hole (18) are connected to the upper mold core (22) through a telescopic tube (24).

6. The precision positioning wall thickness adjustment mechanism for injection molds according to claim 1, characterized in that, A controller (2) is fixedly installed on the outside of the base (1), and multiple positioning rods (7) are symmetrically installed on the top surface of the assembly plate (6), with the top of each positioning rod (7) penetrating the top plate (4) and extending outward.

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