A multi-stage adjustable injection molding pressure control mold

Abstract

The utility model relates to injection moulding technical field especially relates to a multistage adjustable injection moulding pressure control mould, its technical scheme includes: workstation, the top surface of workstation is provided with injection mechanism, the top surface of workstation is provided with fixed plate, the right side of fixed plate is provided with four guide rods, the right end of four guide rods is provided with same fixed plate, the left side of fixed plate is provided with pressure regulating cylinder, the utility model sets up three -level pressure parameters through pressure regulating cylinder, satisfies the gate filling stage, the mould cavity middle part filling stage, the mould cavity end compaction stage, realizes the pressure grading control of mould cavity different area precision, through setting pressure sensor and temperature sensor linkage, dynamic pressure adjustment is combined with algorithm, adapts raw material viscosity, mould temperature change, need not stop debugging, promotes production efficiency, integrated controller, can be adapted to different tonnage injection molding machine, shortens the debugging time.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a multi-level adjustable injection molding pressure control mold. Background Technology

[0002] During injection molding, the injection pressure within the mold directly affects the density, smoothness, and mechanical properties of the finished product. Existing injection molds typically only allow for overall pressure adjustment via the injection molding machine, failing to provide differentiated pressure control for different areas of the mold cavity. For multi-cavity or complex-structured products, a single pressure can easily lead to underfilling or overfilling in certain areas, resulting in a high defect rate. Traditional molds lack pressure feedback and real-time adjustment mechanisms; when raw material viscosity fluctuates or mold temperature changes, the pressure cannot be dynamically adjusted, requiring machine shutdown for adjustments, impacting production efficiency. Therefore, a multi-level adjustable injection molding pressure control mold is needed. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a multi-level adjustable injection molding pressure control mold.

[0004] The technical solution of this utility model: A multi-stage adjustable injection molding pressure control mold includes a worktable, an injection mechanism on the top surface of the worktable, a fixed plate on the top surface of the worktable, four guide rods on the right side of the fixed plate, and a common fixed template at the right end of the four guide rods. A pressure regulating cylinder is located on the left side of the fixed plate, and four connecting rods are rotatably connected to the output end of the pressure regulating cylinder extending through to the right side of the fixed plate. Each connecting rod has a connecting rod rotatably connected to a connecting rod 2 and a connecting rod 3 at its other end. A common moving template is rotatably connected to the other end of each connecting rod 3. A cylinder push rod is located on the left side of the moving template, and a mounting plate is located on the right side of the moving template. The output end of the cylinder push rod... A movable plate extends through to the right side of the mounting plate and is provided therein. Two top rods are provided on the right side of the movable plate, and four connecting rods are provided on the right side of the mounting plate. The right ends of the four connecting rods are provided with the same moving module. The moving module has a sliding groove corresponding to the top rod, and the top rod and the sliding groove are slidably connected. A fixed module is provided on the left side of the fixed template, and a pressure sensor is provided on the left side of the fixed module. A mold cavity is provided on the left side of the fixed module, and a temperature sensor is provided on the rear inner wall of the mold cavity. An injection cavity is provided through the right inner wall of the mold cavity and the right side of the fixed template. An injection main pipe is provided inside the injection cavity, and injection branch pipes are provided on both the upper and lower sides of the injection main pipe. A controller is provided on the top surface of the worktable.

[0005] Preferably, the injection molding mechanism includes a first motor located on the right side of the worktable. A groove is provided on the top surface of the worktable. The output end of the first motor extends through the groove and is provided with a threaded rod. A support seat is threaded to the outer ring of the right end of the threaded rod. An injection molding barrel is provided on the top of the support seat. A second motor is provided on the right side of the injection molding barrel. The output end of the second motor extends through the injection molding barrel and is provided with a spiral feed paddle. A material cylinder is provided on the top of the injection molding barrel.

[0006] Preferably, the left end of the threaded rod is rotatably connected to the left inner wall of the slide groove.

[0007] Preferably, the bottom end of the support base is in contact with the inner wall of the sliding groove and is slidably connected to it.

[0008] Preferably, the end of each of the second links away from the first link is rotatably connected to the right side of the fixed plate.

[0009] Preferably, the moving template is slidably connected to each guide rod.

[0010] Preferably, the pressure regulating cylinder, cylinder push rod, pressure sensor, temperature sensor and controller are electrically connected.

[0011] Compared with the prior art, the present invention has the following beneficial technical effects: This invention uses a pressure regulating cylinder to set three levels of pressure parameters to meet the requirements of the gate filling stage, the cavity middle filling stage, and the cavity end compaction stage. It achieves graded pressure control with different precision in different areas of the cavity. By setting pressure sensors and temperature sensors in conjunction with algorithms, the pressure is dynamically adjusted to adapt to changes in raw material viscosity and mold temperature. No downtime is required for debugging, which improves production efficiency. The integrated controller can be adapted to injection molding machines of different tonnages, shortening the debugging time. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This is a cross-sectional structural diagram of the present invention.

[0013] Reference numerals: 1. Workbench; 2. Injection molding mechanism; 201. Motor 1; 202. Threaded rod; 203. Support base; 204. Injection molding barrel; 205. Motor 2; 206. Spiral feed paddle; 207. Material barrel; 3. Fixed plate; 4. Guide rod; 5. Fixed template; 6. Pressure regulating cylinder; 7. Connecting rod 1; 8. Connecting rod 2; 9. Connecting rod 3; 10. Moving template; 11. Cylinder push rod; 12. Mounting plate; 13. Movable plate; 14. Push rod; 15. Connecting rod; 16. Moving module; 17. Fixed module; 18. Pressure sensor; 19. Temperature sensor; 20. Main injection pipe; 21. Injection branch pipe; 22. Controller. Detailed Implementation

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0015] like Figures 1 to 3 As shown, this utility model proposes a multi-level adjustable injection molding pressure control mold, including a worktable 1. An injection mechanism 2 is provided on the top surface of the worktable 1. The injection mechanism 2 includes a motor 201, which is located on the right side of the worktable 1 and is fixedly connected to the worktable 1. A groove is formed on the top surface of the worktable 1. The output end of the motor 201 extends through the groove and is provided with a threaded rod 202. The output end of the motor 201 and the threaded rod 202 are connected... The right end of the threaded rod 202 is fixedly connected, and the left end of the threaded rod 202 is rotatably connected to the inner wall of the left side of the slide, which facilitates the support and fixation of the threaded rod 202. The outer ring of the right end of the threaded rod 202 is threadedly connected to a support seat 203. The bottom end of the support seat 203 is in contact with the inner wall of the slide and is slidably connected to it, which facilitates the guidance and limiting of the support seat 203. The top of the support seat 203 is provided with an injection molding barrel 204, and the top of the support seat 203 is fixedly connected to the bottom of the injection molding barrel 204. A second motor 205 is located on the right side of the injection molding barrel 204. The right side of the injection molding barrel 204 is fixedly connected to the left side of the second motor 205. The output end of the second motor 205 extends through into the interior of the injection molding barrel 204 and is equipped with a spiral feed paddle 206. The output end of the second motor 205 is rotatably connected to the injection molding barrel 204, and the output end of the second motor 205 is fixedly connected to the spiral feed paddle 206. A material cylinder 207 is located at the top of the injection molding barrel 204. The top of the injection molding barrel 204 is connected to the material cylinder 207. The bottom end of 7 is fixedly connected. The top surface of the workbench 1 is provided with a fixed plate 3. The top surface of the workbench 1 is fixedly connected with the bottom surface of the fixed plate 3. Four guide rods 4 are provided on the right side of the fixed plate 3. The right side of the fixed plate 3 is fixedly connected with the left end of the guide rods 4. The right end of the four guide rods 4 is provided with the same fixed template 5. The right end of the guide rods 4 is fixedly connected with the left side of the fixed template 5. A pressure regulating cylinder 6 is provided on the left side of the fixed plate 3. The left side of the fixed plate 3 is fixedly connected with the right side of the pressure regulating cylinder 6. The output end of the pressure regulating cylinder 6 extends through to the right side of the fixed plate 3 and is rotatably connected to four connecting rods 7. The output end of the pressure regulating cylinder 6 is slidably connected to the fixed plate 3. The other end of each connecting rod 7 is rotatably connected to connecting rods 8 and 9. The end of each connecting rod 8 away from connecting rod 7 is rotatably connected to the right side of the fixed plate 3. The other end of connecting rod 9 is rotatably connected to the same moving template 10. The moving template 10 is slidably connected to each guide rod 4. The guide rods 4 can guide and limit the running trajectory of the moving template 10. The position is such that the output end of the first connecting rod 7 drives the second connecting rod 8 to move, thereby increasing the angle between the third connecting rod 9 and the moving platen 10, which in turn pushes the moving platen 10 to move to the right for mold closing. Since the moving platen 10 has the function of adjusting pressure, it can meet different pressure levels. A cylinder push rod 11 is provided on the left side of the moving platen 10, and the left side of the moving platen 10 is fixedly connected to the right side of the cylinder push rod 11. A mounting plate 12 is provided on the right side of the moving platen 10, and the right side of the moving platen 10 is fixedly connected to the left side of the mounting plate 12. The output end of the cylinder push rod 11 extends through to the right side of the mounting plate 12 and is provided with a movable plate 13. The output end of the cylinder push rod 11 is slidably connected to both the moving template 10 and the mounting plate 12. Two push rods 14 are provided on the right side of the movable plate 13, and the right side of the movable plate 13 is fixedly connected to the left end of the push rods 14. Four connecting rods 15 are provided on the right side of the mounting plate 12, and the right side of the mounting plate 12 is fixedly connected to the left end of the connecting rods 15. The right end of the four connecting rods 15 is provided with the same moving module 16. The right end of the connecting rod 15 is fixedly connected to the left side of the moving module 16. The moving module 16 has a groove corresponding to the push rod 14. The push rod 14 is slidably connected to the groove, which facilitates pushing the part out after molding and prevents the part from sticking to the moving module 16. The left side of the fixed template 5 is provided with a fixed module 17. The left side of the fixed template 5 is fixedly connected to the right side of the fixed module 17. The left side of the fixed module 17 is provided with a pressure sensor 18. The left side of the fixed module 17 is fixedly connected to the right side of the pressure sensor 18. A mold cavity is formed on the left side of the fixed template 5. A temperature sensor 19 is installed on the rear inner wall of the mold cavity. A slot is formed on the rear inner wall of the mold cavity, and the temperature sensor 19 is fixedly installed inside the slot. An injection cavity is formed through the right inner wall of the mold cavity and the right side of the fixed template 5. An injection main pipe 20 is installed inside the injection cavity and is fixedly installed inside the injection cavity. Injection branch pipes 21 are provided on both the upper and lower sides of the injection main pipe 20. The injection main pipe 20 and the injection branch pipes 21 are fixedly connected and communicate with each other. The other end of the injection branch pipes 21 is connected to the mold cavity. The system ensures uniform injection molding. A controller 22 is installed on the top surface of the worktable 1, and the top surface of the worktable 1 is fixedly connected to the bottom surface of the controller 22. The pressure regulating cylinder 6, cylinder push rod 11, pressure sensor 18, and temperature sensor 19 are electrically connected to the controller 22. The pressure sensor 18 can detect the pressure of the moving module 16 and the stationary module 17 when they are closing the mold and feed it back to the controller 22. The temperature sensor 19 can detect the temperature inside the mold cavity and feed it back to the controller 22. The controller 22 can control the pressure of the pressure regulating cylinder 6, which facilitates quick adjustment.

[0016] In this embodiment, when using this device, the controller 22 sets three levels of pressure parameters. For example, the first level of pressure is used for the gate filling stage, the second level of pressure is used for the cavity filling stage, and the third level of pressure is used for the cavity end compaction stage. Each level of pressure is maintained for a certain period of time. Molten material is injected into the injection main pipe 20 through the injection molding mechanism 2, thereby injecting molten material into the mold cavity. Molten material can also be injected from different positions through the injection branch pipe 21 to improve the uniformity of injection. When the temperature sensor 19 detects that the temperature of the mold cavity has reached the set value, the controller 22 starts the first level of pressure control. The pressure regulating cylinder 6 pushes the actuation module 16 to apply appropriate pressure to the stationary module 17. The pressure sensor 18 provides real-time feedback of the pressure value. After the filling stage is completed, the controller 22 automatically switches to the second level of pressure and maintains it for a certain period of time. Then, it switches to the third level of pressure to complete the compaction. After the third level of pressure is completed, the pressure regulating unit is reset, and the mold enters the cooling stage until the product is formed and ejected from the mold.

[0017] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A multi-level adjustable injection molding pressure control mold, comprising a worktable (1), characterized in that: The top surface of the workbench (1) is provided with an injection molding mechanism (2), and the top surface of the workbench (1) is provided with a fixed plate (3). Four guide rods (4) are provided on the right side of the fixed plate (3). The right end of the four guide rods (4) is provided with the same fixed template (5). The left side of the fixed plate (3) is provided with a pressure regulating cylinder (6). The output end of the pressure regulating cylinder (6) extends through to the right side of the fixed plate (3) and is rotatably provided with four connecting rods (7). The other end of each connecting rod (7) is rotatably provided with connecting rods (8) and (9). The other end of the connecting rods (9) is rotatably provided with the same moving template (10). The left side of the moving template (10) is provided with a cylinder push rod (11). The right side of the moving template (10) is provided with a mounting plate (12). The output end of the cylinder push rod (11) extends through to the right side of the mounting plate (12) and is provided with a movable plate (1). 3) Two top rods (14) are provided on the right side of the movable plate (13), and four connecting rods (15) are provided on the right side of the mounting plate (12). The right end of the four connecting rods (15) is provided with the same moving module (16). The moving module (16) is provided with a sliding groove corresponding to the top rod (14). The top rod (14) and the sliding groove are slidably connected. A fixed module (17) is provided on the left side of the fixed template (5). A pressure sensor (18) is provided on the left side of the fixed module (17). A model cavity is provided on the left side of the fixed module (17). A temperature sensor (19) is provided on the rear inner wall of the model cavity. An injection cavity is provided through the right inner wall of the model cavity and the right side of the fixed template (5). An injection main pipe (20) is provided inside the injection cavity. An injection branch pipe (21) is provided on both the upper and lower sides of the injection main pipe (20). A controller (22) is provided on the top surface of the workbench (1).

2. The multi-stage adjustable injection molding pressure control mold according to claim 1, characterized in that, The injection molding mechanism (2) includes a motor (201), which is located on the right side of the workbench (1). The top surface of the workbench (1) is provided with a slide groove. The output end of the motor (201) extends through the slide groove and is provided with a threaded rod (202). The outer ring of the right end of the threaded rod (202) is threadedly connected to a support seat (203). The top of the support seat (203) is provided with an injection molding barrel (204). The right side of the injection molding barrel (204) is provided with a motor (205). The output end of the motor (205) extends through the injection molding barrel (204) and is provided with a spiral feed paddle (206). The top of the injection molding barrel (204) is provided with a material cylinder (207).

3. The multi-stage adjustable injection molding pressure control mold according to claim 2, characterized in that, The left end of the threaded rod (202) is rotatably connected to the left inner wall of the groove.

4. A multi-stage adjustable injection molding pressure control mold according to claim 2, characterized in that, The bottom end of the support base (203) is attached to the inner wall of the groove and is slidably connected to it.

5. A multi-stage adjustable injection molding pressure control mold according to claim 1, characterized in that, Each of the two links (8) is rotatably connected to the right side of the fixed plate (3) at the end away from the first link (7).

6. The multi-stage adjustable injection molding pressure control mold according to claim 1, characterized in that, The moving template (10) is slidably connected to each guide rod (4).

7. A multi-stage adjustable injection molding pressure control mold according to claim 1, characterized in that, The pressure regulating cylinder (6), cylinder push rod (11), pressure sensor (18), temperature sensor (19) are electrically connected to the controller (22).

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