Intelligent control hot runner injection mold
By using intelligent control hot runner injection molds, and employing a sensor and regulating block system to precisely control injection pressure and flow, the molding difficulties and uneven filling problems of existing molds during the injection process are solved, thereby improving product quality and production efficiency.
Patent Information
- Application Number
- CN202422362507.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-09-27
AI Technical Summary
Existing hot runner injection molds have shortcomings in injection pressure and melt flow control, which leads to injection molding difficulties, uneven filling and unstable product quality. In particular, uneven flow distribution in multi-cavity molds may result in significant product differences.
The intelligent hot runner injection mold uses sensor components to detect the temperature, pressure and flow rate in the hot runner. Combined with the adjustment of the runner adjustment block and the pressing block, it precisely controls the injection pressure and melt flow rate, ensuring that the plastic fills every corner of the mold evenly and avoiding defects such as short shots and trapped air.
It achieves stability and precision in the injection molding process, reduces scrap rate, minimizes product deformation and shrinkage, lowers mold adjustment difficulty and R&D costs, and adapts to the needs of different mold cavity models.
Smart Images
Figure CN223532909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold design technology, specifically to an intelligent control hot runner injection mold. Background Technology
[0002] Hot runner injection molds are an advanced mold design that features the ability to heat and keep the plastic in the gating system in a molten state, thereby enabling continuous injection and efficient production.
[0003] Existing hot runner injection molds may have some shortcomings in controlling injection pressure and melt flow rate, which can lead to problems such as injection molding difficulties and uneven filling. When the injection pressure is insufficient, the molten plastic may not be able to fully fill the mold cavity, resulting in incomplete molding or defects, such as short shots or insufficient material. Frequent injection molding problems can lead to extended production cycles, increased scrap rates, and higher production costs. Improper melt flow rate control can cause uneven filling of the molten plastic within the mold cavity, affecting the overall quality and performance of the product. This is especially true in multi-cavity molds, where uneven flow distribution can lead to significant differences in the product quality between different cavities.
[0004] Therefore, it is necessary to invent an intelligent control hot runner injection mold to solve the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an intelligent control hot runner injection mold, which solves some deficiencies in the control of injection pressure and melt flow rate of hot runner injection molds in actual use, which may lead to problems such as injection molding difficulties and uneven filling.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A smart hot runner injection mold includes a second panel, a first panel, and a front mold. A hot runner plate is mounted on the bottom of the second panel, and a positioning ring is provided on the top of the second panel. Multiple hot runners are formed inside the hot runner plate. A primary hot runner gate extending to the input end of the hot runner is provided inside the positioning ring. A secondary hot runner gate extending to the first panel and the front mold is provided at the output end of the hot runner. A runner adjustment block for adjusting the cross-sectional size of the hot runner is provided at the top of the multiple hot runners inside the hot runner plate. A sensor assembly with a detection end extending into the hot runner is mounted on the top of the runner adjustment block. An independent pressing block for individually adjusting the height of the runner adjustment block is provided at the top of the hot runner plate. A synchronous pressing block for simultaneously adjusting the multiple runner adjustment blocks is provided at the bottom of the second panel.
[0008] As a preferred embodiment of this utility model, the top of the hot runner plate is provided with a clearance groove corresponding to the position and number of hot runners. The independent pressing block is located at the top of the clearance groove. The bottom of the clearance groove is provided with a plurality of guide posts that penetrate the hot runner plate and extend to the top of the runner adjusting block. The bottom part of the independent pressing block located at the top of the clearance groove is provided with a reset spring sleeved on the outside of the guide post.
[0009] As a preferred embodiment of this utility model, a threaded push rod is installed in the middle of the independent pressing block. The bottom end of the threaded push rod extends to the top of the gating adjustment block. The threaded push rod is threadedly connected to the hot runner plate. The top end of the threaded push rod passes through and extends to the top of the independent pressing block. A rotating motor is detachably connected to the top end of the threaded push rod. The rotating motor can slide longitudinally along the contours of both ends of the independent pressing block.
[0010] As a preferred embodiment of this utility model, the bottom end of the second panel is provided with multiple guide posts, and the synchronous pressing block can slide longitudinally along the length direction of the guide posts. The bottom end of the second panel is equipped with multiple pressing components that can be detachably installed on the top of the synchronous pressing block. When the pressing components slide downward, the synchronous pressing block can synchronously push multiple independent pressing blocks, and the guide posts at the bottom ends of the multiple independent pressing blocks synchronously push out the gating adjustment block to adjust the cross-sectional dimensions of the hot gating.
[0011] As a preferred embodiment of this utility model, the top of the contact surface of the plurality of gating adjustment blocks is provided with an anti-overflow ring sleeved on the outside of the hot runner, and the interior of the hot runner plate is provided with a groove for the anti-overflow ring to slide longitudinally.
[0012] As a preferred embodiment of this utility model, the top of the hot runner plate is detachably equipped with a plurality of heat insulation pads, the heat insulation pads are detachably installed at the bottom of the second panel, and the bottom of the hot runner plate is provided with a positioning pin for the first panel and the hot runner plate to form a detachable connection.
[0013] As a preferred embodiment of this utility model, the interior of the hot runner plate is provided with multiple heating pipes for adjusting the temperature of the injection molding material located outside the hot runner.
[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0015] In this invention, the sensor assembly's detection end extends to the inner surface of the hot runner, enabling accurate detection of temperature, pressure, and flow rate within the hot runner. This ensures the stability and accuracy of data acquisition during the injection molding process. When facing different processing environments, such as when the designed injection mold simultaneously processes multiple parts of different volumes, the position of the runner adjustment block can be adjusted by regulating the independent pressing block. This lowers or raises the cross-sectional dimensions of the hot runner, thereby controlling the flow rate of the injection melt and the injection pressure. This ensures that the plastic can be uniformly and stably filled into all corners of the mold, avoiding defects such as short shots and trapped air. By adjusting the cross-sectional dimensions of the hot runner, the injection pressure can be indirectly adjusted, keeping it within a reasonable range. This helps reduce problems such as product deformation and shrinkage caused by excessively high or low injection pressure. By pressing the runner adjustment block with the synchronous pressing block, the cross-sectional dimensions of multiple hot runners can be adjusted simultaneously, reducing the difficulty of mold adjustment during mold opening. Furthermore, by controlling the cross-sectional dimensions, it can accommodate different types of cores and cavities, providing a certain degree of replaceability and reducing the R&D and manufacturing costs required in mold production to some extent. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the front mold section of the hot runner injection mold of this utility model;
[0017] Figure 2 This is a schematic diagram of the hot runner plate structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the bottom structure of panel two of this utility model;
[0019] Figure 4 This is a partial cross-sectional view of the hot runner plate of this utility model;
[0020] Figure 5 This is a partial cross-sectional view of the solid-liquid gating channel adjustment block of this utility model.
[0021] Explanation of reference numerals in the attached drawings: 1. Front mold; 2. Panel 1; 3. Panel 2; 4. Positioning ring; 5. Hot runner plate; 6. Heat insulation pad; 7. Positioning pin; 8. Primary hot gate; 9. Secondary hot gate; 10. Synchronous pressing block; 1001. Guide post; 1002. Pressing assembly; 11. Independent pressing block; 1101. Return spring; 1102. Guide post; 1103. Threaded push rod; 1104. Rotating motor; 12. Clearing groove; 13. Heating pipe; 14. Sprue adjusting block; 1401. Anti-overflow ring; 15. Sensor assembly; 16. Hot runner. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0023] This utility model provides, for example Figure 1-5 The illustration shows an intelligent hot runner injection mold, comprising a second panel 3, a first panel 2, and a front mold 1. A hot runner plate 5 is mounted on the bottom of the second panel 3, and a positioning ring 4 is provided on the top of the second panel 3. Multiple hot runners 16 are formed inside the hot runner plate 5. A primary hot sprue 8 extending to the input end of the hot runners 16 is provided inside the positioning ring 4. A secondary hot sprue 9 extending to the first panel 2 and the front mold 1 is provided at the output end of the hot runners 16. A gating mechanism for adjusting the cross-sectional dimensions of the hot runners 16 is provided inside the hot runner plate 5 at the top of the multiple hot runners 16. The hot runner plate 5 has an independent pressing block 11 at its top for individually adjusting the height of the hot runner plate 14, and a synchronous pressing block 10 at the bottom of the panel 2 3 for simultaneously adjusting multiple hot runner plate 14. The sensor assembly 15 is used to monitor parameters such as temperature and pressure in the hot runner 16 in real time, providing data support for the precise control of the independent pressing block 11 and the synchronous pressing block 10 during the injection molding process, and providing a strong guarantee for the production of high-quality injection molded parts.
[0024] The top of the hot runner plate 5 is provided with a clearance groove 12 corresponding to the position and number of hot runners 16. The independent pressing block 11 is located at the top of the clearance groove 12. The bottom of the clearance groove 12 is provided with a plurality of guide posts 1102 that penetrate the hot runner plate 5 and extend to the top of the runner adjustment block 14. The bottom part of the independent pressing block 11 located at the top of the clearance groove 12 is provided with a return spring 1101 sleeved on the outside of the guide post 1102. The function of the return spring 1101 is to automatically reset the independent pressing block 11 to the initial position after it is released, so as to facilitate subsequent adjustment.
[0025] A threaded push rod 1103 is installed in the middle of the independent pressing block 11. The bottom end of the threaded push rod 1103 extends above the gating adjustment block 14. The threaded push rod 1103 is threadedly connected to the hot runner plate 5. The top end of the threaded push rod 1103 passes through and extends above the independent pressing block 11. A rotary motor 1104 is detachably connected to the top end of the threaded push rod 1103. The rotary motor 1104 can slide longitudinally along the contours of both ends of the independent pressing block 11. Before any adjustment operation is performed, the threaded push rod 1103... The bottom end of the threaded push rod 1103 does not need to contact the runner adjusting block 14. Only when the threaded connection is rotated to a certain distance will the bottom end of the threaded push rod 1103 contact the runner adjusting block 14. The threaded push rod 1103 can drive the independent pressing block 11 to move downward. The guide posts 1102 on both sides can ensure the stability during the adjustment process. When the synchronous pressing block 10 presses the independent pressing block 11, the threaded push rod 1103 will not slide downward with the independent pressing block 11, so as to avoid interference between the thread and the hot runner plate 5.
[0026] The bottom end of panel 2 3 is provided with multiple guide posts 1001. The synchronous pressing block 10 can slide longitudinally along the length direction of the guide posts 1001. The bottom end of panel 2 3 is equipped with multiple pressing components 1002 that can be detachably installed on the top of the synchronous pressing block 10. When the pressing component 1002 slides downward, the synchronous pressing block 10 can synchronously push multiple independent pressing blocks 11. The guide posts 1001 at the bottom of the multiple independent pressing blocks 11 synchronously push out the gating adjustment block 14, thereby adjusting the cross-sectional size of the hot runner 16. The movement of the gating adjustment block 14 will change the cross-sectional size of the hot runner 16, thereby adjusting the flow rate and speed of the plastic melt in the hot runner 16, which helps to ensure uniform distribution of plastic melt during the injection molding process, reduce scrap rate and improve product quality.
[0027] The top of the contact surfaces of the multiple gate adjustment blocks 14 are provided with anti-overflow rings 1401 that are sleeved on the outside of the hot runner 16. The hot runner plate 5 has a groove inside for the anti-overflow rings 1401 to slide longitudinally. The anti-overflow rings 1401 are provided to prevent the melt from flowing out along the joint to the top of the gate adjustment blocks 14 when the gate adjustment blocks 14 slide longitudinally, thereby extending the service life of the product.
[0028] The top of the hot runner plate 5 is detachably equipped with multiple heat insulation pads 6. The heat insulation pads 6 are detachably installed at the bottom of the second panel 3. The bottom of the hot runner plate 5 is provided with a positioning pin 7 for the first panel 2 and the hot runner plate 5 to form a detachable connection. The design of the positioning pin 7 enables the hot runner plate 5 to be accurately and stably installed above the first panel 2, while maintaining the relative position between the two.
[0029] The hot runner plate 5 has multiple heating pipes 13 located outside the hot runner 16 for adjusting the temperature of the injection molding material. By reducing the cross-sectional size of the hot runner 16, the rate of temperature adjustment of the plastic melt can be increased, thereby improving the control capability of temperature requirements.
[0030] This invention extends the sensor assembly 15 to the inner surface of the hot runner 16, enabling accurate detection of temperature, pressure, and flow rate inside the hot runner 16. This ensures the stability and accuracy of data acquisition during the injection molding process. When facing different processing environments, such as when the designed injection mold simultaneously processes multiple parts of different volumes, the position of the runner adjustment block 14 can be adjusted by adjusting the independent pressing block 11 to lower or raise the cross-sectional dimensions of the hot runner 16. This controls the flow rate of the injection melt and the injection pressure, ensuring that the plastic can be uniformly and stably filled into all corners of the mold, avoiding defects such as short shots and trapped air. By adjusting the cross-sectional dimensions of the hot runner 16, the injection pressure can be indirectly adjusted to keep it within a reasonable range. This helps reduce problems such as product deformation and shrinkage caused by excessively high or low injection pressure. By pressing the runner adjustment block 14 with the synchronous pressing block 10, the cross-sectional dimensions of multiple hot runners 16 can be adjusted simultaneously, reducing the difficulty of mold adjustment during mold opening. At the same time, by controlling the cross-sectional dimensions, it can meet the needs of different types of core cavities, has a certain degree of replaceability, and reduces the R&D and manufacturing costs required in the mold production process to a certain extent.
[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A smart control hot runner injection mold, characterized in that: Includes panel two (3), panel one (2) and front mold (1). A hot runner plate (5) is installed at the bottom of panel two (3), and a positioning ring (4) is provided at the top of panel two (3). Multiple hot runners (16) are opened inside the hot runner plate (5). A primary hot runner gate (8) extending to the input end of the hot runner (16) is provided inside the positioning ring (4). A secondary hot runner gate (9) extending to panel one (2) and front mold (1) is provided at the output end of the hot runner (16). The interior of the plate (5) is provided with a sprue adjustment block (14) at the top of multiple hot runners (16) for adjusting the cross-sectional size of the hot runners (16). The top of the sprue adjustment block (14) is equipped with a sensor assembly (15) with the detection end extending into the interior of the hot runner (16). The top of the hot runner plate (5) is provided with an independent pressing block (11) for individually adjusting the height of the sprue adjustment block (14). The bottom of the second panel (3) is provided with a synchronous pressing block (10) for synchronously adjusting multiple sprue adjustment blocks (14).
2. The intelligent control hot runner injection mold according to claim 1, characterized in that: The top of the hot runner plate (5) is provided with a clearance groove (12) corresponding to the position and number of the hot runner (16). The independent pressing block (11) is located at the top of the clearance groove (12). The bottom of the clearance groove (12) is provided with a plurality of guide posts (1102) that penetrate the hot runner plate (5) and extend to the top of the runner adjusting block (14). The bottom part of the independent pressing block (11) located at the top of the clearance groove (12) is provided with a return spring (1101) sleeved on the outside of the guide post (1102).
3. The intelligent control hot runner injection mold according to claim 2, characterized in that: A threaded push rod (1103) is installed in the middle of the independent pressing block (11). The bottom end of the threaded push rod (1103) extends above the gating adjustment block (14). The threaded push rod (1103) is threadedly connected to the hot runner plate (5). The top end of the threaded push rod (1103) passes through and extends above the independent pressing block (11). A rotary motor (1104) is detachably connected to the top end of the threaded push rod (1103). The rotary motor (1104) can slide longitudinally along the contours of both ends of the independent pressing block (11).
4. The intelligent control hot runner injection mold according to claim 3, characterized in that: The bottom end of the second panel (3) is provided with multiple guide posts (1001). The synchronous pressing block (10) can slide longitudinally along the length direction of the guide post (1001). The bottom end of the second panel (3) is provided with multiple pressing components (1002) that can be detachably installed on the top of the synchronous pressing block (10). When the pressing component (1002) slides down, the synchronous pressing block (10) can push multiple independent pressing blocks (11) synchronously. The guide posts (1001) at the bottom of the multiple independent pressing blocks (11) synchronously push out the gating adjustment block (14) to adjust the cross-sectional size of the hot gating (16).
5. The intelligent control hot runner injection mold according to claim 1, characterized in that: The top of the contact surfaces of the multiple runner adjustment blocks (14) are provided with anti-overflow rings (1401) sleeved on the outside of the hot runner (16), and the interior of the hot runner plate (5) is provided with a groove for the anti-overflow rings (1401) to slide longitudinally.
6. The intelligent control hot runner injection mold according to claim 1, characterized in that: The top of the hot runner plate (5) is detachably equipped with multiple heat insulation pads (6), the heat insulation pads (6) are detachably installed at the bottom of the second panel (3), and the bottom of the hot runner plate (5) is provided with a positioning pin (7) for the first panel (2) and the hot runner plate (5) to form a detachable connection.
7. The intelligent control hot runner injection mold according to claim 1, characterized in that: The interior of the hot runner plate (5) is provided with multiple heating pipes (13) for adjusting the temperature of the injection molding material, located on the outside of the hot runner (16).