A hot runner system mold and modular assembly method

Abstract

The present invention relates to a hot runner system mold and a modular assembly method thereof, including a detachable gas-glue circuit integrated module, a hot runner template combination and a cover plate, wherein the integrated module includes a bracket valve plate, an upright hot runner sleeve and a driving cylinder, and realizes gas, glue and electricity integration through a limit guide rail and a power box module; the hot runner template combination has a pipe mounting hole and includes a limit bottom plate, a spacing frame is fixedly arranged above the limit bottom plate, and the spacing frame is provided with a positioning convex block on the limit opening side, the gas-glue circuit integrated module is placed on the limit bottom plate, and the outer edge of the limit guide rail is limited to the inner frame edge of the spacing frame to ensure the precise assembly of the gas-glue circuit integrated module; the cover plate is fixed on the spacing frame and pressed against the support column of the bracket valve plate. The present invention achieves the effects of rapid replacement and maintenance, improved production efficiency and reduced failure rate.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding equipment for plastic processing in high-end equipment manufacturing, and in particular to a hot runner system mold and a modular assembly method. Background Art

[0002] The injection molded products prepared by the injection molding process can have complex shapes and / or exaggerated aspect ratios. The injection molding process uses a multi-injection tube hot runner system mold that can be separated and combined with an injection mold corresponding to the shape of the injection molded product. The injection mold has product specificity, and the multi-injection tube hot runner system mold has universality. The molten plastic is transported to each cavity of the injection mold through multiple vertically configured injection tubes (or hot runner sleeves, hot runner delivery pipes) of the hot runner system mold. The application of the injection molding process is quite wide, for example, in the fields of automotive parts, display industry, drones, electronic components, etc., its efficient production and high-quality products have become an important guarantee for industrial competitiveness.

[0003] For injection molds with multiple injection points, in traditional hot runner system molds, multiple driving air channels are usually processed in the driving valve plate above multiple injection tubes to connect the driving cylinders of the corresponding injection tubes. The driving air channel is usually connected to the driving cylinder in series, which can reduce the number and complexity of the air channels in the driving valve plate to optimize the mold design of the driving valve plate; the air channels in the driving valve plate are usually processed by advanced CNC machine tools to improve processing accuracy and efficiency; and automated equipment is introduced to clean and maintain the air channels to reduce manual intervention; at the same time, the solenoid valve wiring is simplified to reduce the failure rate. Therefore, one pneumatic drive can drive the switches of multiple injection tubes.

[0004] However, as the shapes of injection molded products become more complicated, traditional hot runner system molds are not up to the task. Injection molded products may have defects such as insufficient filling or overfilling in the details, resulting in glue overflow, which reduces the product yield. Therefore, after the injection molding operation reaches a certain level, it is necessary to stop the machine for refurbishment. However, as the former injection mold is product-specific and expensive, it is impossible to prepare multiple sets of injection molds. During refurbishment, it is necessary to separate the hot runner system mold from the injection mold and replace it with a new hot runner system mold, resulting in low refurbishment and maintenance efficiency.

[0005] Invention patent publication number CN115284548A discloses a sleeve injection mold, including a fixed mold assembly and a movable mold assembly. The fixed mold assembly includes a fixed mold base, on which a plurality of mold cores are arrayed, and each mold core is provided with a hot runner module and a plurality of cavities. The mold core, the hot runner module, and the cavity form a module, which is arranged on the fixed mold base. The upper mold assembly forms a modular design, which is convenient for replacing and disassembling components. The movable mold assembly includes a movable mold base, a movable mold table, a top plate, and a push plate. The movable mold table is arranged corresponding to the mold core, and the core corresponds to the cavity. At the same time, an external cooling water circuit, an internal cooling water circuit, and a curling cooling water circuit are arranged to synchronously cool the inner wall, outer wall, and curling edge of the sleeve. In the related art, there is no improvement on the needle valve drive air channel of the hot runner module. And in the current injection molding industry, the hot runner module can also belong to the combination part of the movable mold assembly, and is not limited to being configured only in the fixed mold assembly.

[0006] The applicant disclosed a stacked mold coaxial valve needle system in the invention patent publication number CN113427720A, comprising: a mounting seat; a mounting cylinder symmetrically mounted on the mounting seat and provided with a hot runner inside; a driving mechanism detachably mounted on a predetermined position of the mounting seat through a fixing assembly for driving the valve needle to move along the inner wall of the mounting cylinder to open and close the opening of the hot runner; and a connector detachably mounted between the output end of the driving mechanism and the valve needle for connecting the two. In the related art, it is taught that the driving air channel connected to the cylinder for driving the valve needle to move up and down can be not arranged in the driving valve plate, but externally connected with an external driving air channel, but there is a lack of technical inspiration on how to install the stacked mold coaxial valve needle system in the hot runner system mold and how to better repair and replace it; in common knowledge, before repairing the valve needle system, it is necessary to disassemble and separate the connecting part of the hot runner system mold and the injection mold (the movable mold or fixed mold in the injection mold that is integrated with the hot runner system mold during injection molding), and the disassembly and separation requires a longer downtime.

[0007] The applicant disclosed a TV face frame full-needle hot runner system in the invention patent publication number CN113352556A, including: a base of the mold; a valve plate mounted on the top of the base and adapted to the base; a plurality of hot runners whose bottoms are movably inserted in the base and whose tops are detachably assembled with the valve plate; a positioning member disposed on the valve plate to position the top of the hot runner; an opening and closing device mounted on the valve plate for sealing or unsealing the runner opening at the bottom of the hot runner; and a cover plate mounted on the top of the valve plate. When the hot runner system in the prior art is in use, the hot runner sleeve can be disassembled and assembled as a whole during maintenance. Specifically, by detachably mounting the hot runner sleeve together with the drive valve plate and the cover plate, all the hot runner sleeves can be pulled out of the base by lifting the cover plate, thereby eliminating the process of taking out the hot runners one by one. However, those skilled in the art should know that the cover plate is a reference part installed in the injection molding equipment by the movable mold, and the cover plate of the hot runner system mold can also be a reference part installed in the injection molding equipment by the fixed mold according to the technology of the injection molding equipment. If the cover plate is separated together with the hot runner sleeve and the drive valve plate and a new cover plate is used, the reference point of the hot runner system mold in the injection molding equipment needs to be repositioned and calibrated to reduce the film deviation between the movable mold and the fixed mold.

[0008] The applicant disclosed a hydraulic cylinder and a hot runner device having the hydraulic cylinder in the invention patent publication number CN112303058A. The hydraulic cylinder includes a cylinder body, the cylinder body has an oil chamber, a piston is arranged in the oil chamber, the upper end of the piston penetrates the upper wall of the cylinder body, the lower end of the piston penetrates the lower wall of the cylinder body, the cylinder body is provided with a first oil hole connected to the top of the oil chamber and a second oil hole connected to the bottom of the oil chamber, the hydraulic cylinder also includes a cooling block and an end cover, the cooling block is fixedly arranged on the bottom surface of the cylinder body, the end cover is fixedly arranged on the bottom surface of the cooling block, an insulating chamber is arranged between the cooling block and the end cover, and the cooling block is provided with a clearance hole for the piston to rise and fall. In the existing related technology, the hydraulic cylinder is used to replace the pneumatic cylinder to drive the valve needle of the hot runner system mold. The advantage is that the driving force is strong and the conduction is fast, but the disadvantage is that once the oil leaks, the entire hot runner system mold will be contaminated. Summary of the invention

[0009] The main purpose of the present invention is to provide a hot runner system mold. The main improvement is to solve the technical problem that the valve needle of the hot runner system mold is driven by a pneumatic cylinder, which leads to slow drive transmission of some valve needles. At the same time, it solves the problem that as the shape of the injection molded product becomes more complicated, the hot runner system mold needs to be separated from the injection mold (movable mold or fixed mold) for refurbishment, resulting in low refurbishment and maintenance efficiency.

[0010] The second main purpose of the present invention is to provide a modular assembly method for a hot runner system mold, which can quickly repair and replace the drive air channel, injection runner and electrical connection wires in the hot runner system mold without disassembling and separating the hot runner system mold and the injection mold (movable mold or fixed mold) and replacing the cover plate.

[0011] The main purpose of the present invention is achieved through the following technical solutions:

[0012] A hot runner system mold is proposed, comprising:

[0013] A detachable and separable gas-glue integrated module comprises a support valve plate, a plurality of vertical hot runner sleeves installed below the support valve plate, and a plurality of driving cylinders installed above the support valve plate. Limiting guide rails having one end longer than the adjacent side of the support valve plate are installed on both sides of the support valve plate. A solenoid valve module is installed on the side of the limiting guide rail. The driving cylinder is connected to the solenoid valve module by a gas driving pipeline. Power box modules are installed on the multiple protruding ends of the limiting guide rail, and the two ends of the power box module protrude from the protruding ends of the limiting guide rail. A plurality of supporting columns are arranged above the support valve plate.

[0014] The hot runner template assembly has a pipe mounting hole, the hot runner template assembly includes a limiting bottom plate located at the upper layer, a spacing frame is fixedly arranged above the limiting bottom plate, and the spacing frame is provided with a positioning protrusion on the limiting opening side; the air-glue circuit integrated module is placed on the limiting bottom plate, the hot runner sleeve is accommodated in the pipe mounting hole, the outer edge limit of the limiting guide rail is located at the inner frame edge of the spacing frame, and the periphery of the positioning protrusion is correspondingly located at the end side edge of the limiting guide rail, one side edge of the bracket valve plate and the inner side edge of the power box module;

[0015] The cover plate is fixedly mounted on the spacing frame, and the inner surface of the cover plate is pressed against the supporting column of the bracket valve plate.

[0016] By adopting the above-mentioned basic device technical solution, a hot runner system mold with a detachable mold core, compact structure, easy assembly and maintenance is provided. By integrating the three circuits of gas, glue and electricity into a detachable and separable gas-glue integrated module, the overall structure of the hot runner system mold is simplified, which is convenient for rapid replacement and maintenance of various components, and improves the flexibility and reliability of the hot runner system mold. The limit rail not only plays a role in module positioning, but also integrates the power box module and the solenoid valve module, so that the electrical circuit and pneumatic circuit inside the hot runner system mold can be effectively integrated, reducing the complexity of external wiring and reducing the failure rate. By setting a positioning bump on the spacing frame, the precise position of the gas-glue integrated module on the hot runner template combination is ensured, and the assembly accuracy and stability of the hot runner system mold are improved. The cover plate is fixed on the spacing frame, and its inner surface is pressed against the support column of the bracket valve plate, which enhances the sealing and structural strength of the entire hot runner system mold and prevents external impurities from entering and affecting the system performance. Therefore, the hot runner system mold can quickly replace the mold core (i.e., the air-glue integrated module) with the movable mold (or fixed mold) of the product mold without disassembly, realizing the one-time replacement of the air, glue and electricity circuits, with good assembly efficiency, maintenance convenience and overall performance.

[0017] In a preferred example, the present invention can be further configured as follows: the multiple solenoid valve units of the solenoid valve module correspond one-to-one to the driving cylinder, and correspond in groups to the gas driving pipelines connected in an external manner; an injection molding flow channel connected to the hot runner sleeve is provided in the bracket valve plate; a conductive wire is provided in the limiting guide rail to connect the power box module and the solenoid valve module; the components of the driving air channel, injection molding flow channel and conductive path are separated, and the gas, glue and electricity are integrated into the gas-glue integrated module.

[0018] By adopting the above-mentioned preferred technical features, the gas-glue integrated module integrating gas, glue and electricity can realize the three-way separation of the injection flow channel (located in the bracket valve plate), the driving gas channel (located in the gas driving pipeline) and the conductive path (located in the limit guide rail). Since the driving cylinder corresponds to the hot runner sleeve one-to-one and is connected through an external gas driving pipeline, each driving cylinder can be driven individually by the corresponding solenoid valve unit, and the complex gas channel processing on the bracket valve plate is avoided, simplifying the mold design and manufacturing process of the bracket valve plate. In addition, the internal integration of the injection flow channel in the bracket valve plate is realized, connecting multiple vertical hot runner sleeves to form multi-point glue injection, making the injection molding process more stable and efficient, and improving the reliability of injection molding production and the quality of injection molding products. The power box module and the solenoid valve module are connected by the conductive wire set in the limit guide rail, realizing the integrated management and internal layout of the electrical circuit, reducing the complexity of external wiring, reducing the failure rate, and facilitating maintenance and repair.

[0019] In a preferred example, the present invention may be further configured as follows: the spacing frame is provided with a side notch for allowing the gas drive pipeline to pass through and be connected to the corresponding solenoid valve unit of the solenoid valve module.

[0020] By adopting the above-mentioned preferred technical features, the side notch structure of the spacing frame can be used to effectively allow the gas drive pipeline to pass through and be centrally connected to the solenoid valve module, so that the solenoid valve module can be exposed laterally to the spacing frame, simplifying the arrangement and connection of the gas drive pipeline, and improving the assembly efficiency and reliability of the hot runner system mold. In addition, the gas drive pipeline can be separately located on the bracket valve plate. This design reduces the interference between the gas drive pipeline and other components, avoids damage to the gas drive pipeline due to force or extrusion, and extends the service life of the hot runner system mold.

[0021] In a preferred example, the present invention can be further configured as follows: the positioning protrusion of the spacer frame includes a side stop block and a stop block, the gap between the side stop block and the stop block is just enough for the protruding end of the limiting guide rail to extend out, the inner side of the power box module is limited to the outer sides of the side stop block and the stop block, and one of the side edges of the bracket valve plate is combined with an L-shaped guide strip to be limited to the inner side edge of the stop block.

[0022] By adopting the above-mentioned preferred technical features, the connection structure of the side block and the blocking block can be used to realize the precise positioning and stable assembly of the integrated air-glue circuit module on the limiting bottom plate and the spacing frame of the hot runner template combination. Specifically, the combination of the side block and the blocking block ensures that the protruding end of the limiting guide rail can be accurately extended, thereby realizing the precise docking of the integrated air-glue circuit module and the hot runner template combination, avoiding the assembly deviation problem caused by position deviation. In addition, the inner side limit of the power box module is located on the outer side of the side block and the blocking block, so that the entire integrated air-glue circuit module has reliable support on the horizontal X-axis and Y-axis, thereby improving the structural stability of the integrated air-glue circuit module. In addition, one side edge of the bracket valve plate can be limited to the inner side edge of the blocking block through the L-shaped guide strip, and the four sides of the blocking block can be used as positioning points, further enhancing the positioning accuracy of the integrated air-glue circuit module and reducing the misalignment error during assembly. The blocking block is detachable relative to the limiting bottom plate, which facilitates the disassembly and assembly of the air-glue integrated circuit module. Not only does the air-glue integrated circuit module have good installation stability and accuracy, but it also facilitates subsequent disassembly and maintenance operations, thereby improving the work efficiency of replacing the air-glue integrated circuit module.

[0023] In a preferred example, the present invention can be further configured as follows: a valve needle is arranged in the hot runner sleeve, and the driving cylinder includes a piston disk connected to the valve needle to drive the valve needle to move up and down to open and close the injection port of the hot runner sleeve; wherein, the multiple solenoid valve units of the solenoid valve module, the driving cylinder and the hot runner sleeve are in a one-to-one correspondence.

[0024] By adopting the above-mentioned preferred technical features, the hot runner sleeve is provided with a valve needle, and the driving cylinder is connected to the valve needle through a piston disc to drive the lifting and lowering movement of the valve needle, thereby accurately controlling the opening and closing of the hot runner sleeve injection port. This individual single-cylinder driving method ensures that the flow control during the injection molding process is more precise and stable, and improves the quality of the injection molded products and the injection molding production efficiency. Since the multiple solenoid valve units of the solenoid valve module correspond one-to-one with the driving cylinder and the hot runner sleeve, and are connected in groups through corresponding gas drive pipelines, it is ensured that the opening time of each injection port can be independently controlled. This structure avoids the problem of synchronous opening that may occur in traditional single control systems, resulting in insufficient filling of the injection molded product and excessive filling resulting in overflow of glue, and improves the reliability and stability of the hot runner system mold. In addition, when a driving air circuit or injection molding channel is blocked, the cover plate can be removed and the air-glue circuit integrated module can be easily removed by hoisting, and a new air-glue circuit integrated module can be directly put in and replaced. The replaced old air-glue circuit integrated module can be inspected and repaired without affecting the refurbishment time, which greatly simplifies the injection molding maintenance and repair process and reduces downtime and repair costs.

[0025] In a preferred example, the present invention can be further configured as follows: the thickness of the spacing frame is greater than the thickness of the support valve plate, and less than the sum of the height of the driving cylinder and the thickness of the support valve plate.

[0026] By adopting the above-mentioned preferred technical features and utilizing the reasonable matching between the thickness of the spacer frame and the height of the support valve plate and the driving cylinder, the support valve plate and the driving cylinder will not exceed the range of the spacer frame during installation, thereby improving the stability and reliability of the hot runner system mold and ensuring the compactness and stability of the entire structure of the hot runner system mold. In addition, the reasonable thickness of the spacer frame makes the fit between the various components tighter, reduces the overall thickness of the hot runner system mold, reduces the mold cost, and optimizes the internal space layout of the hot runner system mold, improving the convenience of assembly and maintenance.

[0027] In a preferred example, the present invention can be further configured as follows: a plurality of alignment grooves are provided on the inner surface of the cover plate for positioning the driving cylinder, a through hole is provided at the center of the alignment groove, and the through hole is aligned with the adjustment end face of the valve needle; the driving cylinder also includes a collection bowl installed on the bracket valve plate for collecting overflowed plastic, a driving block arranged on the collection bowl, and a driving cylinder body arranged on the driving block, two airway interfaces are provided on one side of the driving block for connecting the gas driving pipeline, and the piston disk moves in the driving cylinder body.

[0028] By adopting the above-mentioned preferred technical features, a plurality of alignment grooves are provided on the inner surface of the cover plate to accurately position the drive cylinder and ensure that the position of the drive cylinder is accurate. The perforation provided in the center of the alignment groove is aligned with the adjustment end face of the valve needle, which is convenient for adjusting the lifting position of the valve needle and improving the switching accuracy and reliability of the injection port of the hot runner sleeve. Specifically, the connection relationship of the alignment groove ensures the precise position of the drive cylinder on the cover plate, avoiding the functional failure or leakage of the drive cylinder due to position deviation. The perforation of the cover plate is aligned with the adjustment end face of the valve needle, so that the valve needle can be fine-tuned when necessary to ensure the stability and consistency of the injection molding process. The collecting bowl installed on the bracket valve plate is used to collect overflowed plastic to prevent contamination of other parts of the mold and keep the hot runner system mold clean. The two airway interfaces provided on the drive block facilitate the connection of the gas drive pipeline, simplify the installation process of the gas-glue integrated module, and improve the reliability and maintenance convenience of the hot runner system mold. The piston disc of the driving cylinder is moved in the driving cylinder body to ensure that the driving cylinder can smoothly and accurately control the lifting and lowering movement of the valve needle, thereby improving the speed and response time of the injection port switch.

[0029] In a preferred example, the present invention can be further configured as follows: according to the insertion direction of the hot runner sleeve, the hot runner template assembly further includes modularly combined:

[0030] A pad, arranged below the limiting bottom plate;

[0031] An ejector plate, arranged below the pad;

[0032] The mold core is arranged below the ejector plate, wherein a side pad is arranged between the pad plate and the mold core to clamp the ejector plate and form a gap between the ejector plate and the mold core; the hot runner sleeve passes through the pad plate, the ejector plate and the mold core through the tube mounting hole, and the tube mounting hole is an anti-deformation punching hole.

[0033] By adopting the above-mentioned preferred technical features, the overall stability and strength of the mold can be enhanced through the modular combination of the pad, ejector plate and mold core. The pad is set below the limit bottom plate to effectively increase the stability and strength of the limit bottom plate and reduce the vibration and deformation of the hot runner system mold during operation. At the same time, the pad can also serve as a buffer layer between other mold components in the hot runner template combination to further protect the internal components and extend the service life of the mold. The ejector plate is set below the pad to effectively push the injection molded product out of the mold during the injection molding process, improve the demoulding efficiency and quality, and the solid connection between the ejector plate and the pad ensures the upright shape of the hot runner sleeve. The mold core is set below the ejector plate, and a side pad is set between the ejector plate and the mold core to form a weight-reducing gap and optimize the internal space layout of the mold. This modular structure that simplifies assembly and maintenance not only makes the cooperation between the components tighter, but also reduces the difficulty of operation and maintenance costs.

[0034] The second main purpose of the present invention is achieved through the following technical solutions:

[0035] A modular assembly method for a hot runner system mold is proposed, comprising the following steps:

[0036] S1. Assemble a detachable and separable gas-glue integrated module, the gas-glue integrated module comprising a support valve plate, a plurality of upright hot runner sleeves installed below the support valve plate, and a plurality of driving cylinders installed above the support valve plate. The two sides of the support valve plate are installed with limit rails with one end longer than the adjacent side of the support valve plate, the side of the limit rail is installed with a solenoid valve module, the multiple protruding ends of the limit rail are installed with power box modules, and the two ends of the power box module protrude from the protruding ends of the limit rail; a plurality of support columns are arranged above the support valve plate;

[0037] S2, assembling a hot runner template assembly, wherein the hot runner template assembly has a pipe mounting hole, and the hot runner template assembly includes a limiting bottom plate located at an upper layer, a spacing frame is fixedly arranged above the limiting bottom plate, and the spacing frame is provided with a positioning protrusion on the limiting opening side;

[0038] S3, the air-glue circuit integrated module is placed on the limit bottom plate in a hoisting manner, the hot runner sleeve is inserted into the pipe mounting hole, the outer edge of the limit guide rail is located at the inner frame edge of the spacing frame, and the periphery of the positioning protrusion is correspondingly located at the end side edge of the limit guide rail, one side edge of the bracket valve plate and the inner side edge of the power box module;

[0039] S4. The cover plate is fixedly installed on the spacing frame, and the inner surface of the cover plate is pressed against the supporting column of the bracket valve plate.

[0040] By adopting the above technical solution, a hot runner system mold with a compact structure and easy assembly and maintenance can be manufactured. Specific features include: 1. A detachable integrated air-glue module integrates the air-glue module into a detachable module, simplifies the overall mold structure, facilitates quick replacement and maintenance of the integrated air-glue module, and improves the flexibility and reliability of the hot runner system mold; 2. The limit rail and the power box module are combined in the integrated module. The limit rail not only plays a positioning role, but is also used to integrate the power box module and the solenoid valve module, so that the electrical circuit, pneumatic pipeline and injection flow channel can be effectively integrated, reducing the complexity of external wiring and reducing the failure rate; 3. The positioning protrusion of the hot runner template combination is used. By setting the positioning protrusion on the spacing frame, the precise position of the integrated air-glue module on the hot runner template combination is ensured, and the assembly accuracy and stability are improved; 4. The integrated module is fixedly installed by the cover plate, the cover plate is fixed on the spacing frame, and the inner surface of the cover plate is pressed against the support column of the bracket valve plate, thereby enhancing the sealing and structural strength of the entire hot runner system mold and preventing external impurities from entering and affecting the system performance.

[0041] In a preferred example, the present invention can be further configured as follows: the multiple solenoid valve units of the solenoid valve module, the driving cylinder and the hot runner sleeve are in a one-to-one correspondence; during the injection molding process, the injection start time of the multiple solenoid valve units opening the corresponding injection ports of the hot runner sleeve is intelligently adjusted and is inconsistent; when the driving air circuit or the injection channel is blocked, after removing the cover plate, the air-glue circuit integrated module can be removed by hoisting.

[0042] By adopting the above preferred technical features, the following functions can be achieved:

[0043] 1. Intelligent control and adjustment function, multiple solenoid valve units correspond one-to-one with the hot runner sleeve, and the injection start time can be intelligently adjusted to be non-consistent; in this way, the opening time and sequence of each injection port can be dynamically adjusted according to actual needs, improving the flexibility and accuracy of the injection molding process, reducing the scrap rate of injection molding products with complex shapes, and improving injection molding production efficiency;

[0044] 2. The function of rapid fault detection and troubleshooting. When the driving air circuit or injection molding runner is blocked, the air-glue circuit integrated module can be easily removed by lifting by removing the cover plate to replace the new air-glue circuit integrated module. This method greatly simplifies the troubleshooting and maintenance process, shortens the downtime of long injection molding processes, reduces the maintenance cost of injection molding equipment, and improves the reliability and availability of hot runner system molds.

[0045] In summary, the present invention includes at least one of the following technical effects that contribute to the prior art:

[0046] 1. The structure of the detachable integrated air-rubber circuit module makes the assembly and maintenance of the hot runner system mold more convenient, reducing assembly errors and safety risks caused by complex air channel distribution, while also reducing maintenance costs;

[0047] 2. The driving cylinder corresponds to the hot runner sleeve one-to-one and is connected through an external gas driving pipeline, avoiding the processing of complex air channels in the bracket valve plate, significantly reducing the design and machining costs of the hot runner system mold;

[0048] 3. The multiple solenoid valve units, driving cylinders and hot runner sleeves of the solenoid valve module are in one-to-one correspondence. During injection molding, the injection start time of the multiple solenoid valve units opening the corresponding injection ports of the hot runner sleeves is intelligently adjusted and non-consistent, which reduces the unfilled voids in the injection molded products and makes the injection molded products have better quality;

[0049] 4. The conductive wires in the limit rails on both sides of the bracket valve plate connect the power box module and the solenoid valve module. The gas, glue and electricity are integrated into the gas-glue integrated module, which simplifies the solenoid valve wiring, reduces the failure rate, and improves the reliability and stability of the hot runner system mold;

[0050] 5. When a drive failure occurs during the injection molding process, there is no need to check the gas drive pipelines on the bracket valve plate one by one. You can directly dismantle the mold core (the old gas-glue integrated module) and replace it with a new gas-glue integrated module that has been tested. There is no need to design the airway inside the bracket valve plate, and there is no airway machining cost. There is also no need for manual work by the airway mold fitter of the bracket valve plate during the injection molding refurbishment process, and there is no need to clean and maintain the airway inside the bracket valve plate during the injection molding refurbishment process.

[0051] 6. The point order of the vertical hot runner sleeve (nozzle) on the bracket valve plate is irregularly arranged. During the replacement of the air-glue integrated module, the problem of not being able to find the corresponding control nozzle point will not occur, which is conducive to the adjustment and production of the injection molding equipment;

[0052] 7. Based on the individual connection structure of the spacer frame and the side pads, the hot runner system mold can increase the overall thickness and form a middle layer gap, and the mold cost is low;

[0053] 8. A power box module is installed based on the multiple protruding ends of the limit guide rail. Both ends of the power box module protrude from the protruding ends of the limit guide rail, and a solenoid valve module is installed on the side of the limit guide rail. Therefore, there is no need for complicated wiring to connect the solenoid valve unit corresponding to the drive cylinder, which makes it easy to troubleshoot. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A three-dimensional assembly schematic diagram of a hot runner system mold according to an embodiment of the present invention is shown;

[0055] Figure 2 A schematic diagram of the exploded components of a hot runner system mold according to an embodiment of the present invention is shown;

[0056] Figure 3 An enlarged schematic diagram of a hot runner system mold at a power box module (A) and a solenoid valve module (B) according to an embodiment of the present invention is shown;

[0057] Figure 4 A schematic top view of a hot runner system mold according to an embodiment of the present invention is shown;

[0058] Figure 5 A cross-sectional schematic diagram of a hot runner system mold according to an embodiment of the present invention is shown;

[0059] Figure 6 A three-dimensional assembly schematic diagram of an air-to-glue circuit integrated module of a hot runner system mold according to an embodiment of the present invention is shown (corresponding to the component schematic diagram of step S1 in the modular assembly method);

[0060] Figure 7 An exploded three-dimensional assembly schematic diagram of an integrated air-to-glue path module (with a gas drive pipeline shown) of a hot runner system mold according to an embodiment of the present invention is shown;

[0061] Figure 8 A schematic top view of an integrated air-to-glue circuit module (with a gas drive pipeline shown through) of a hot runner system mold according to an embodiment of the present invention is shown;

[0062] Fig. 9 A three-dimensional schematic diagram of the air-glue circuit integrated module of the hot runner system mold according to an embodiment of the present invention is shown at the driving cylinder;

[0063] Fig.10 A block diagram showing a process of a modular assembly method of a hot runner system mold according to an embodiment of the present invention;

[0064] Fig.11 and Fig.12 A schematic diagram of components in step S2 of a modular assembly method for a hot runner system mold according to an embodiment of the present invention is shown;

[0065] Fig.13 A schematic diagram of components in step S3 of a modular assembly method for a hot runner system mold according to an embodiment of the present invention is shown;

[0066] Fig.14 A schematic diagram of components in step S4 of a modular assembly method for a hot runner system mold according to an embodiment of the present invention is shown;

[0067] Fig.15 A schematic diagram showing a hot runner system mold according to an embodiment of the present invention, showing a perspective view of the air-to-glue integrated module during the injection molding process.

[0068] Figure numerals: 1, injection molding product; 10, gas-glue integrated module; 11, bracket valve plate; 12, hot runner sleeve; 121, hot runner sleeve closing; 122, hot runner sleeve opening early; 13, glue injection port; 14, limit guide rail; 141, protruding end; 15, support column; 16, gas drive pipeline; 17, valve needle; 18, L-shaped guide strip; 20, hot runner template assembly; 21, pipe mounting hole; 22, limit bottom plate; 23, pad; 24, ejector plate; 2 5. Mold core; 26. Side pad; 27. Stress relief groove; 30. Cover plate; 31. Alignment groove; 32. Perforation; 33. Equipment kit; 40. Solenoid valve module; 41. Solenoid valve unit; 50. Power box module; 60. Spacer frame; 61. Positioning protrusion; 611. Side block; 612. Block block; 62. Side notch; 70. Drive cylinder; 71. Piston disc; 72. Aggregate bowl; 73. Drive block; 73a. Airway interface; 74. Drive cylinder body. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments for understanding the inventive concept of the present invention, and cannot represent all the embodiments, nor are they interpreted as the only embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field on the premise of understanding the inventive concept of the present invention are within the scope of protection of the present invention.

[0070] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indications will also change accordingly. In order to facilitate the understanding of the technical solution of the present invention, the hot runner system mold of the present invention is further described and explained below, but it is not limited to the protection scope of the present invention.

[0071] The "integration" of the air-glue integrated module proposed in the present invention refers to the integration of multiple drive pipelines, conductive circuits, and injection channels into a coordinated and unified whole. The air-glue integrated module serves as the core of the hot runner system mold, making the core of the entire system compact, efficient, and easy to replace and maintain. The advantages of the integrated module are improved efficiency, enhanced stability, improved overall performance, and better synergy.

[0072] First, a hot runner system mold of an embodiment of the present invention is a universal hot runner system, which can be selected with any of the upper molds (or side molds with injection ports) of a variety of product molds for manufacturing different injection products, and the two are combined into an upper film as a whole, and then installed in the injection molding equipment, which can be used as a movable mold or a fixed mold, usually a movable mold. The injection molding equipment drives the upper film as a whole to close the film with the lower mold of the product mold, and then injects glue into the closed product mold to form an injection molded product 1. The injection molded product 1 has a complex shape, such as the casing of a television or a monitor, and the injection molded product cannot usually be formed by a single point injection port. Therefore, the same injection molding equipment can prepare a variety of injection molded products 1. The hot runner system mold is universal and does not require repeated mold opening. The product mold has the specificity of the corresponding injection molded product 1. A universal set of hot runner system molds can be combined with any of a variety of product molds with specificity.

[0073] Figure 1 A three-dimensional assembly schematic diagram of a hot runner system mold according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the hot runner system mold component breakdown is shown. Figure 3 An enlarged schematic diagram of the hot runner system mold at the power box module (A) and the solenoid valve module (B) is shown. Figure 4 A schematic diagram of the hot runner system mold is shown from above. Figure 5 A cross-sectional schematic diagram of the hot runner system mold is shown. The drawings include common parts of multiple embodiments, and the parts with differences or distinctions are described in text or presented in comparison with the drawings. Based on the characteristics of the industry and the essence of the technology, technicians familiar with the field should correctly and reasonably understand and judge whether the individual technical features described below or any combination of them can represent the same embodiment, or whether multiple technical features with mutually exclusive technical essences can represent different variant embodiments respectively.

[0074] Reference Figure 1 , Figure 2 and Figure 4 , Figure 5In the device embodiment, the present invention proposes a hot runner system mold, which mainly includes: a detachable and separable air-glue circuit integrated module 10, a hot runner template assembly 20 and a cover plate 30. As mentioned above, the air-glue circuit integrated module 10 serves as the core of the hot runner system mold; the cover plate 30 is combined with the hot runner template assembly 20 to limit and fix the air-glue circuit integrated module 10. The cover plate 30 is also installed as a reference component in the injection molding equipment as a movable mold (or fixed mold). The cover plate 30 is usually a metal template with high strength and rigidity. The inner and outer surfaces of the cover plate 30 can be mirror polished to enhance cleanliness. The hot runner template assembly 20 is a combination of multiple metal templates, one of which is to limit the shape of the hot runner sleeve 12 in a straight shape and to provide space for heating the hot runner sleeve 12. Therefore, refer to Figure 1 The lower plate surface contour of the hot runner template assembly 20 is larger than the middle plate surface contour of the air-glue circuit integrated module 10 , and the upper plate surface contour of the cover plate 30 is larger than the lower plate surface contour of the hot runner template assembly 20 .

[0075] Related References Figure 6 , Figure 7 and Figure 8 , the air-glue circuit integrated module 10 includes a support valve plate 11, a plurality of upright hot runner sleeves 12 installed below the support valve plate 11, and a plurality of driving cylinders 70 installed above the support valve plate 11. The support valve plate 11 is a metal plate in a support shape, such as stainless steel or aluminum alloy, with good high temperature resistance and corrosion resistance. A glue injection channel is opened inside the support valve plate 11, which is connected to the hot runner sleeve 12. The support shape of the support valve plate 11 is formed with a support hole for weight reduction and a support convex strip that provides a larger area for engaging the driving cylinder 70. The driving cylinder 70 drives the valve needle 17 in the hot runner sleeve 12 to move up and down to open or close the glue injection port 13 (visible in the lower end of the hot runner sleeve 12) at the lower end. Figure 5 The two sides of the support valve plate 11 are equipped with a limit rail 14 with one end longer than the adjacent side of the support valve plate 11 (the longer part of one end can be specifically seen at Figure 8 The limit rail 14 is made of a high-strength alloy, and the surface may be nickel-plated to enhance wear resistance and corrosion resistance. The side of the limit rail 14 is equipped with a solenoid valve module 40 (see Figure 3 The driving cylinder 70 is connected to the solenoid valve module 40 by a gas driving pipeline 16, and the power box module 50 is installed on the multiple protruding ends 141 of the limit guide rail 14 (see Figure 3(A) Enlarged view of the part), the power box module 50 may be provided with a voltage stabilizer and a filter inside to ensure stable and reliable power supply. The two ends of the power box module 50 protrude from the protruding end 141 of the limiting guide rail 14 to facilitate the electrical wiring of the solenoid valve module 40 and to limit the position of the air-glue integrated module 10 on the hot runner template assembly 20. A plurality of support columns 15 are arranged above the bracket valve plate 11 to support the cover plate 30. The support column 15 can be made of high-strength steel material, and the surface is hardened to have strong load-bearing capacity and fatigue resistance. The height of the support column 15 is adjusted according to actual needs to adapt to drive cylinders 70 of different heights. Usually, when the bracket valve plate 11 is placed on the hot runner template assembly 20, the supporting end surface of the support column 15 will be higher than the upper surface of the spacing frame 60.

[0076] See also Figure 1 , Figure 2 and Figure 5 The hot runner template assembly 20 has a tube mounting hole 21. The hot runner template assembly 20 includes a limiting bottom plate 22 located at the upper layer. A spacing frame 60 is fixed above the limiting bottom plate 22. The spacing frame 60 is provided with a positioning protrusion 61 on the limiting opening side. The air-glue circuit integrated module 10 is placed on the limiting bottom plate 22. A plurality of hot runner sleeves 12 are inserted and inserted into the plurality of tube mounting holes 21. The two are in a one-to-one correspondence. In addition, the outer edge of the limiting guide rail 14 is located at the inner frame edge of the spacing frame 60, and the periphery of the positioning protrusion 61 is correspondingly located at the end side edge of the limiting guide rail 14, one side edge of the bracket valve plate 11, and the inner side edge of the power box module 50. Therefore, the limiting relationship between the outer edge of the limiting guide rail 14 and the inner frame edge of the spacing frame 60 serves as the X-axial limitation of the air-glue circuit integrated module 10 on the limiting base plate 22, and the positioning function of the positioning protrusion 61 serves as the Y-axial limitation of the air-glue circuit integrated module 10 on the limiting base plate 22. The bracket valve plate 11 of the air-glue circuit integrated module 10 is located on the limiting base plate 22 and in the enclosed space of the spacing frame 60.

[0077] See also Figure 1 , Figure 2 , Figure 4 and Figure 5, the cover plate 30 is fixedly mounted on the spacing frame 60, and the inner surface of the cover plate 30 is pressed against the support column 15 of the support valve plate 11. The upper part of the support valve plate 11 of the air-glue circuit integrated module 10 is covered by the cover plate 30, so that the air-glue circuit integrated module 10 is limited in the Z-axis direction on the limiting bottom plate 22. Specifically, the peripheral part of the support column 15 presses against the upper surface of the spacing frame 60, and the middle part of the support column 15 also presses against the top of the support column 15. The cover plate 30 is provided with an equipment kit 33 to combine the hot runner system mold with the injection molding equipment.

[0078] The implementation principle of the device embodiment of the present invention is as follows: in order to provide a hot runner system mold with a detachable mold core, compact structure, easy assembly and maintenance, a detachable gas-glue integrated module 10 integrates three circuits of gas, glue and electricity (specifically corresponding to the gas drive pipeline 16, the injection flow channel of the support valve plate 11 and the conductive wires electrically connecting the solenoid valve module 40 and the power box module on the limit guide rail 14), simplifying the overall structure of the hot runner system mold, facilitating the rapid replacement and maintenance of each component, and improving the flexibility and reliability of the hot runner system mold. The limit guide rails 14 on both sides of the support valve plate 11 not only play a role in module positioning, but also integrate the effects of the power box module 50 and the solenoid valve module 40, so that the electrical circuit in the hot runner system mold through the limit guide rail 14, the injection flow channel in the support valve plate 11, and the gas drive pipeline 16 connecting the drive cylinder 70 and the solenoid valve module 40 can be effectively integrated into the gas-glue integrated module 10, reducing the complexity of external wiring and reducing the failure rate. The positioning protrusion 61 provided on the spacing frame 60 can ensure the precise position of the gas-glue integrated circuit module 10 on the hot runner template assembly 20, thereby improving the assembly accuracy and stability of the hot runner system mold. By pressing the inner surface of the cover plate 30 fixed on the spacing frame 60 against the support column 15 of the bracket valve plate 11, the sealing and structural strength of the entire hot runner system mold are enhanced, and external impurities are prevented from entering and affecting the system performance. Therefore, the hot runner system mold can quickly replace the mold core (i.e., the gas-glue integrated circuit module 10) with the movable mold (or fixed mold) of the product mold without disassembly, realizing the one-time replacement of the three circuits of gas, glue, and electricity, and has good assembly efficiency, maintenance convenience, and overall performance.

[0079] See also Figure 1 , Figure 2 and Figure 3 In a preferred example, the multiple solenoid valve units 41 of the solenoid valve module 40 correspond one-to-one to the driving cylinder 70, and correspond in groups to the gas driving pipeline 16 connected in an external manner (as can be seen in Figure 6 ),For example Figure 6The driving cylinders 70 are arranged in three rows, 6, 6, and 7, for a total of 19 driving cylinders 70. The solenoid valve units 41 of the solenoid valve module 40 are also 19, corresponding one to one and configured in three solenoid valve modules 40. The number of solenoid valve units 41 of each solenoid valve module 40 is 8, 7, and 4, for a total of 19 solenoid valve units 41. Under this structure, a large number of driving air channels are required, and it is impossible to open an air channel in the bracket valve plate 11. The bracket valve plate 11 is provided with an injection flow channel (not shown in the figure) connected to the hot runner sleeve 12; the limit guide rail 14 is provided with a conductive wire (not shown in the figure, the conductive wire is located inside the limit guide rail 14), connecting the power box module 50 and the solenoid valve module 40; the driving air channel, injection flow channel and conductive line are separated from the components in the gas-glue integrated module 10, and the gas, glue and electricity are integrated into the gas-glue integrated module 10. Therefore, the gas-glue integrated module 10 that integrates gas, glue and electricity realizes the three-way separation of the injection flow channel (located in the support valve plate 11), the driving gas channel (located in the gas driving pipeline 16) and the conductive path (located in the limit guide rail 14) in the module. Since the driving cylinder 70 corresponds to the hot runner sleeve 12 one-to-one, each driving cylinder 70 can be driven individually by the corresponding electromagnetic valve unit 41 through the connection of the external gas driving pipeline 16, and avoids the processing of complex gas channels on the support valve plate 11, simplifying the mold design and manufacturing process of the support valve plate 11. In addition, the internal integration of the injection flow channel in the support valve plate 11 is realized, connecting multiple vertical hot runner sleeves 12 to form multi-point glue injection, and can open or close the glue injection port 13 of the hot runner sleeve 12 individually and single-tube controlled, and even can establish an intelligent adjustment mechanism for the injection switch time difference, so that the injection process is more stable and efficient, and the reliability of injection production and the quality of the injection molded product 1 are improved. In addition, the power box module 50 and the solenoid valve module 40 are connected by the conductive wires provided in the limit guide rail 14, so that the integrated management and internal layout of the electrical circuits are realized, the complexity of the external wiring is reduced, the failure rate is reduced, and maintenance and repair are facilitated.

[0080] See also Figure 5 In a preferred example, a valve needle 17 is disposed in the hot runner sleeve 12, and the driving cylinder 70 includes a piston plate 71 connected to the valve needle 17 to drive the valve needle 17 to move up and down to open or close the injection port 13 of the hot runner sleeve 12; see Figure 6 , Figure 7 and Figure 8, the multiple solenoid valve units 41 of the solenoid valve module 40, the driving cylinder 70 and the hot runner sleeve 12 are in a one-to-one correspondence to establish a single-cylinder individual drive connection. The piston disc 71 in the driving cylinder 70 is driven to rise and fall by the air pressure difference, so that the valve needle 17 connected to the piston disc 71 is synchronously raised and lowered. The individual single-cylinder drive of the lifting and lowering movement of the valve needle 17 can accurately control the opening and closing of the injection port 13 of the hot runner sleeve 12. This individual single-cylinder drive method ensures that the flow control during the injection molding process is more precise and stable, and improves the quality of the injection molded product 1 and the injection molding production efficiency. Therefore, the opening time of each injection port 13 can be independently controlled. This structure avoids the problem of insufficient filling and overfilling of the injection molded product that may occur in the traditional single control system under synchronous opening, resulting in overflow of glue, and improves the reliability and stability of the hot runner system mold. In addition, when a driving gas circuit or injection molding runner is blocked, the cover plate 30 can be removed and the air-glue circuit integrated module 10 can be easily removed by hoisting, and a new air-glue circuit integrated module 10 can be directly put in and replaced. The replaced old air-glue circuit integrated module 10 can be inspected and repaired without affecting the refurbishment time, and there is no need to disassemble the originally combined product mold and hot runner mold, which greatly simplifies the injection molding maintenance and overhaul process and reduces downtime and maintenance costs.

[0081] See also Figure 5 , Figure 4 and Figure 1 In a preferred example, a plurality of alignment grooves 31 are formed on the inner surface of the cover plate 30 for positioning the driving cylinder 70. A through hole 32 is formed at the center of the alignment groove 31. The through hole 32 is aligned with the adjustment end surface of the valve needle 17 for adjusting the extension length of the valve needle 17 relative to the piston plate 71. Fig. 9The driving cylinder 70 also includes a collecting bowl 72 mounted on the bracket valve plate 11 for collecting overflowed plastic, a driving block 73 arranged on the collecting bowl 72, and a driving cylinder body 74 arranged on the driving block 73. Two airway interfaces 73a are provided on one side of the driving block 73 for connection of the gas driving pipeline 16. The piston plate 71 moves in the driving cylinder body 74. A plurality of alignment grooves 31 are provided on the inner surface of the cover plate 30 to accurately position the driving cylinder 70 and ensure that the position of the driving cylinder 70 is accurate. The through hole 32 provided in the center of the alignment groove 31 is aligned with the adjustment end face of the valve needle 17, which is convenient for adjusting the lifting position of the valve needle 17 and improving the switching accuracy and reliability of the injection port 13 of the hot runner sleeve 12. Through the through hole 32 of the cover plate 30, the adjustment end face of the valve needle 17 can be slightly adjusted when necessary to change the position of the valve needle 17 in the Z-axis direction to ensure the stability and consistency of the injection molding process. The collecting bowl 72 installed on the bracket valve plate 11 is in the shape of a funnel, which is convenient for collecting and discharging overflowed plastic, preventing contamination of other parts of the mold, and keeping the hot runner system mold clean. The driving block 73 isolates the collecting bowl 72 from the driving cylinder 74. The driving block 73 is provided with two airway interfaces 73a, which are convenient for connecting the gas driving pipeline 16, one is an opening interface (OPEN), and the other is a closing interface (CLOSE); when the air pressure of the opening interface is injected, the piston disc 71 rises, the valve needle 17 rises, the injection port 13 of the hot runner sleeve 12 is opened, and the injection molding is started; when the air pressure of the closing interface is injected, the piston disc 71 descends, the valve needle 17 descends, the injection port 13 of the hot runner sleeve 12 is closed, and the injection molding is closed; the driving cylinder 70 is operated individually. In this way, the installation process of the air-glue circuit integrated module 10 is simplified, and the reliability and maintenance convenience of the hot runner system mold are improved. Therefore, the piston plate 71 of the driving cylinder 70 moves in the driving cylinder body 74, and the driving cylinder 70 can smoothly and accurately control the lifting and lowering movement of the valve needle 17, thereby improving the speed and response time of the opening and closing of the glue injection port 13.

[0082] In the reference Figure 2 , Figure 3 , Figure 5In a preferred example, the thickness of the spacing frame 60 is greater than the thickness of the support valve plate 11, and less than the sum of the height of the driving cylinder 70 and the thickness of the support valve plate 11. By reasonably matching the thickness of the spacing frame 60 with the heights of the support valve plate 11 and the driving cylinder 70, the support valve plate 11 and the driving cylinder 70 will not exceed the range of the spacing frame 60 during installation, thereby improving the stability and reliability of the hot runner system mold and ensuring the compactness and stability of the entire structure of the hot runner system mold. In addition, the reasonable thickness of the spacing frame 60 allows the various components to fit more closely, reduces the overall thickness of the hot runner system mold, reduces the mold cost, and optimizes the internal space layout of the hot runner system mold, improving the convenience of assembly and maintenance.

[0083] See also Figure 2 and Figure 3 In the (B) part, in a preferred example, the spacing frame 60 is provided with a side notch 62, the opening of which faces upward, so that the gas drive pipeline 16 can pass through and be connected to the corresponding solenoid valve unit 41 of the solenoid valve module 40. Multiple gas drive pipelines 16 are centrally connected to the solenoid valve module 40 through the side notch 62 provided in the spacing frame 60, so that the solenoid valve module 40 can be laterally exposed to the spacing frame 60, simplifying the arrangement and connection of the gas drive pipeline 16 and improving the assembly efficiency and reliability of the hot runner system mold. In addition, since the gas drive pipeline 16 is separately located on the bracket valve plate 11, this will reduce the interference between the gas drive pipeline 16 and other components of the gas-glue integrated module 10. Under the support of the gas drive pipeline 16, a pipeline gap is formed between the lower surface of the cover plate 30 and the bracket valve plate 11 to avoid damage to the gas drive pipeline 16 due to force or extrusion. The limit guide rails 14 combined on both sides of the bracket valve plate 11 are hollow structures (as can be seen in Figure 7 ), plays the role of anti-collision protection, limit integrated module, and accommodating conductive wires, thereby extending the service life of the core of the hot runner system mold. In a more specific example, the lower surface of the limit guide rail 14 is lower than the lower surface of the bracket valve plate 11, and the lower surface of the limit guide rail 14 touches the upper surface of the limit bottom plate 22, so that the bracket valve plate 11 floats on the limit bottom plate 22, which is beneficial to the positioning adjustment of the bracket valve plate 11.

[0084] See also Figure 2 , Figure 3 Part (A) in Fig.12 and Fig.13In a preferred example, the positioning protrusion 61 of the spacing frame 60 includes a side stopper 611 and a stopper 612, and the gap between the side stopper 611 and the stopper 612 is just enough for the protruding end 141 of the limiting guide rail 14 to extend out, and the inner side of the power box module 50 is limited to the outer side of the side stopper 611 and the stopper 612, and one side of the bracket valve plate 11 is combined with an L-shaped guide bar 18 (such as Figure 8 As shown in the figure, the X-axial portion of the L-shaped guide bar 18 is fitted to the inner side of the blocking block 612; in a more specific example, the number of the blocking blocks 612 is two or more, and the Y-axial portion of the L-shaped guide bar 18 passes through the gap between the blocking blocks 612 and is connected to the power box module 50. The connection structure between the side block 611 and the blocking block 612 realizes the precise positioning and stable assembly of the air-glue circuit integrated module 10 on the limiting bottom plate 22 and the spacing frame 60 of the hot runner template assembly 20. Specifically, the protruding end 141 of the limiting guide rail 14 can be tightly extended from the gap between the side block 611 and the blocking block 612, thereby realizing the precise docking of the air-glue circuit integrated module 10 with the hot runner template assembly 20, avoiding the assembly deviation problem caused by position deviation. In addition, the inner side limit of the power box module 50 is located at the outer side of the side block 611 and the block 612, so that the entire air-glue integrated module 10 has reliable support on the horizontal X-axis and Y-axis, thereby improving the structural stability of the air-glue integrated module 10. Moreover, by having one side limit of the bracket valve plate 11 located at the inner side of the block 612, the four sides of the block 612 can be used as positioning points, further enhancing the positioning accuracy of the air-glue integrated module 10 and reducing the misalignment error during assembly. The block 612 is detachable relative to the limiting bottom plate 22, which facilitates the disassembly and assembly of the air-glue integrated module 10. Not only does the air-glue integrated module 10 have good installation stability and accuracy, but it also facilitates subsequent disassembly and maintenance operations, thereby improving the work efficiency of replacing the air-glue integrated module 10.

[0085] See also Figure 2 , Figure 3 and Fig. 9 In a preferred example, according to the insertion direction of the hot runner sleeve 12, the hot runner template assembly 20 further includes modular combinations of:

[0086] A pad 23 is disposed below the limiting bottom plate 22;

[0087] The ejector plate 24 is disposed below the pad 23;

[0088] The mold core 25 is arranged below the ejector plate 24, wherein a side pad 26 is arranged between the pad 23 and the mold core 25 to clamp the ejector plate 24 and form a gap between the ejector plate 24 and the mold core 25; the hot runner sleeve 12 passes through the pad 23, the ejector plate 24 and the mold core 25 through the tube mounting hole 21, and the tube mounting hole 21 is an anti-deformation punching hole; in a more specific example, the tube mounting hole 21 is connected with a stress release groove 27, so that the inner diameter of the tube mounting hole 21 and the outer diameter surface of the hot runner sleeve 12 will not produce rigid contact, which is conducive to the extraction of the hot runner sleeve 12. Therefore, based on the stress release groove 27, the tube mounting hole 21 will not excessively clamp the hot runner sleeve 12 under the effect of thermal expansion and contraction.

[0089] Therefore, the overall stability and strength of the mold are enhanced by the modular combination of the pad 23, the ejector plate 24 and the mold core 25. The pad 23 is arranged below the limit bottom plate 22 to effectively increase the stability and strength of the limit bottom plate 22 and reduce the vibration and deformation of the hot runner system mold during operation. At the same time, the pad 23 can also be used as a buffer layer between other mold components in the hot runner template assembly 20 to further protect the internal components and extend the service life of the mold. The ejector plate 24 is arranged below the pad 23 to effectively push the injection molded product 1 out of the mold during the injection molding process, improve the demoulding efficiency and quality, and the stable connection between the ejector plate 24 and the pad 23 ensures the upright shape of the hot runner sleeve 12. The mold core 25 is arranged below the ejector plate 24, and a side pad 26 is arranged between the pad 23 and the mold core 25 to form a weight reduction gap and optimize the internal space layout of the mold. This modular structure that simplifies assembly and maintenance not only makes the cooperation between the components more compact, but also reduces the difficulty of operation and maintenance costs.

[0090] In a variation embodiment of the present invention, a hot runner system mold also includes an intelligent detection feedback system to achieve real-time monitoring and remote control, and improve the intelligence level and management efficiency of the system. Specifically, a variety of sensors are provided inside the support valve plate 11, including a pressure sensor, a flow sensor and a temperature sensor, which respectively monitor the pressure of the drive cylinder 70, the flow rate of the hot runner sleeve 12 and the temperature of the support valve plate 11. All sensor data are summarized by the built-in data acquisition module and transmitted to the central controller through the wireless communication module. The central controller analyzes and judges according to the real-time data, issues instructions when necessary, and intelligently adjusts the working parameters of each component to ensure that the hot runner system mold is always in the best working state. In a more specific variation example, the intelligent detection feedback system includes an intelligent drive mechanism, has a self-learning function, continuously optimizes the control strategy according to historical data, and improves the response speed and accuracy of the runner system mold. An optical fiber temperature probe can be provided on the outside of the hot runner sleeve 12 to monitor the temperature distribution of the molten plastic in real time to ensure that the cavity of each hot runner sleeve 12 is evenly heated. The data of the optical fiber temperature measuring probe can be transmitted to the central controller through the wireless communication module, and the central controller dynamically adjusts the heating power according to the temperature data to avoid local overheating or uneven cooling.

[0091] In a variant embodiment of the present invention, a function indicator light or a function indicating device may be provided on the adjustment end face of the valve needle 17 to indicate the current use status information of the valve needle 17 in an optical, electrical or mechanical manner, and the situation can be detected and understood in time through the perforation 32 of the cover plate 30.

[0092] In the modified embodiment of the present invention, the support valve plate 11 is a splicing type, that is, in addition to the limit guide rails 14, another support valve plate 11 can be installed on both sides of the support valve plate 11, and the assembly of multiple support valve plates 11 is placed on the limit bottom plate 22 in the space surrounded by a spacing frame 60. Therefore, the support valve plate 11 supports the combined use of multiple modules, expanding the application range and production capacity.

[0093] Reference Fig.10 In the method embodiment, the present invention proposes a modular assembly method for a hot runner system mold, which mainly includes steps S1 to S4. Step S1 is to assemble a detachable and separable air-to-glue integrated module. Figure 6 , Figure 7 and Figure 8 Step S2 is to assemble the hot runner template assembly, and a spacing frame is fixed above the limit bottom plate, and the reference Fig.11 and Fig.12 Step S3 is to place the air-glue integrated module on the limiting bottom plate of the hot runner template assembly by hoisting, and compare Fig.13 ; Step S4 is to fix the cover plate on the spacing frame, and compare Fig.14 .

[0094] Step S1 See Figure 6 , Figure 7 and Figure 8 , assemble a detachable and separable gas-glue integrated module 10, the gas-glue integrated module 10 includes a support valve plate 11, a plurality of vertical hot runner sleeves 12 installed below the support valve plate 11, and a plurality of drive cylinders 70 (such as Fig. 9 As shown in the figure), a limiting guide rail 14 with one end longer than the adjacent side of the supporting valve plate 11 is installed on both sides of the supporting valve plate 11, and a solenoid valve module 40 is installed on the side of the limiting guide rail 14, and a power box module 50 is installed on multiple protruding ends 141 of the limiting guide rail 14, and both ends of the power box module 50 protrude from the protruding ends 141 of the limiting guide rail 14; a plurality of support columns 15 are arranged above the supporting valve plate 11.

[0095] Step S2 See Fig.11 and Fig.12 , assemble the hot runner template assembly 20, first refer to Fig.11 The hot runner template assembly 20 has a tube mounting hole 21, and includes a limiting bottom plate 22 located at the upper layer. The hot runner template assembly 20 also includes a modularly combined pad 23, an ejector plate 24, a mold core 25, and a side pad 26 arranged between the mold core 25 and the pad 23. The pad 23 is arranged below the limiting bottom plate 22, the ejector plate 24 is arranged below the pad 23, and the mold core 25 is arranged below the ejector plate 24. Next, refer to Fig.12 A spacing frame 60 is fixedly arranged above the limiting bottom plate 22 , and a positioning protrusion 61 is arranged on the limiting opening side of the spacing frame 60 .

[0096] Step S3 See Fig.13 The air-glue circuit integrated module 10 is placed on the limiting base plate 22 in a hoisting manner to limit the air-glue circuit integrated module 10 in the XY plane, the hot runner sleeve 12 is plug-inly accommodated in the pipe mounting hole 21, the outer edge of the limiting guide rail 14 is located at the inner frame edge of the spacing frame 60, and the periphery of the positioning protrusion 61 is correspondingly located at the end side edge of the limiting guide rail 14, one side edge of the bracket valve plate 11 and the inner side edge of the power box module 50.

[0097] Step S4 see Fig.14 The cover plate 30 is fixedly mounted on the spacing frame 60 , and the inner surface of the cover plate 30 is pressed against the support column 15 of the bracket valve plate 11 to limit the air-to-glue circuit integrated module 10 on the Z axis.

[0098] The implementation principle of the method embodiment of the present invention is: in order to manufacture a hot runner system mold with a compact structure, easy to assemble and maintain, the specific features include: assembling a detachable air-glue circuit integrated module 10 in step S1, integrating the air-glue circuit in a detachable module, simplifying the overall mold structure, so as to facilitate the rapid replacement and maintenance of the air-glue circuit integrated module 10, and improving the flexibility and reliability of the hot runner system mold; the structural combination of the limiting guide rail 14 and the power box module 50 assembled in step S1 is in the air-glue circuit integrated module 10, and the limiting guide rail 14 not only plays a positioning role, but also is used to integrate the power box module 50 and the solenoid valve module 40, so that the electrical circuit, pneumatic pipeline and injection molding are convenient for installation. The flow channel is effectively integrated, the complexity of external connections is reduced, and the failure rate is reduced; the positioning protrusion 61 of the spacing frame 60 on the hot runner template assembly 20 is set in steps S2 and S3 to ensure the precise position of the air-glue circuit integrated module 10 on the hot runner template assembly 20, thereby improving assembly accuracy and stability; the fixed installation of the cover plate 30 in step S4 is used to achieve XYZ limiting of the air-glue circuit integrated module 10, the cover plate 30 is fixed on the spacing frame 60, and the inner surface of the cover plate 30 is pressed against the support column 15 of the bracket valve plate 11, thereby enhancing the sealing and structural strength of the entire hot runner system mold, and preventing external impurities from entering the hot runner system mold and affecting the injection molding performance.

[0099] See also Fig.14 and Fig.13 In a preferred example, the multiple solenoid valve units 41 of the solenoid valve module 40, the driving cylinder 70 and the hot runner sleeve 12 are in a one-to-one correspondence; during the injection molding process, the injection start time of the multiple solenoid valve units 41 opening the corresponding injection ports 13 of the hot runner sleeve 12 is intelligently adjusted and is not consistent; when the driving air circuit or the injection channel is blocked, the cover plate 30 can be removed first, and then the air-glue circuit integrated module 10 can be removed by hoisting to quickly replace it with a new tested air-glue circuit integrated module 10.

[0100] See also Fig.15 In the process of preparing the injection molded product 1 using the aforementioned hot runner system mold, after excluding the hot runner template assembly 20, the cover plate 30 and the dedicated product mold, the air-glue integrated module 10 with universality is viewed. The injection molded product 1 has a complex shape and corresponds to the dedicated product mold (not shown in the figure). Not all the injection ports 13 of the hot runner sleeve 12 can correspond to the injection molded product 1. The part of the hot runner sleeve 12 located in the vacant position needs to be kept closed throughout the process (such as Fig.15Of course, not all hot runner sleeves 12 have the same amount of injection glue at the injection port 13. Some hot runner sleeves 12 located in the thicker part of the injection molded product 1 need to be given a longer injection time (such as Fig.15 In the early opening hot runner sleeve 122, under one-to-one intelligent adjustment, the opening time of the injection port of the early opening hot runner sleeve 122 is earlier than the opening time of the injection port of other general hot runner sleeves 12; in this way, the injection product 1 has a better injection quality, and solves the shape defects of the injection product 1 that are not filled in thicker parts or the overflow problem of excessive filling in thinner parts. The injection product 1 can be a TV frame shell, a display frame shell, a shell or part of a drone, a shell or part of a robot, a shell or part of a self-driving intelligent robot dog, a shell or part of a smart phone, or other electronic product parts with complex shapes, which are formed by one-time injection molding without splicing and combination.

[0101] The embodiments of this specific implementation method are all preferred embodiments for facilitating the understanding or implementation of the technical solutions of the present invention, and are not intended to limit the protection scope of the present invention. All equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot runner system mold, characterized in that: include: A detachable and separable gas-glue integrated module comprises a support valve plate, a plurality of vertical hot runner sleeves installed below the support valve plate, and a plurality of driving cylinders installed above the support valve plate. Limiting guide rails having one end longer than the adjacent side of the support valve plate are installed on both sides of the support valve plate. A solenoid valve module is installed on the side of the limiting guide rail. The driving cylinder is connected to the solenoid valve module by a gas driving pipeline. Power box modules are installed on the multiple protruding ends of the limiting guide rail, and the two ends of the power box module protrude from the protruding ends of the limiting guide rail. A plurality of supporting columns are arranged above the support valve plate. The hot runner template assembly has a pipe mounting hole, the hot runner template assembly includes a limiting bottom plate located at the upper layer, a spacing frame is fixedly arranged above the limiting bottom plate, and the spacing frame is provided with a positioning protrusion on the limiting opening side; the air-glue circuit integrated module is placed on the limiting bottom plate, the hot runner sleeve is accommodated in the pipe mounting hole, the outer edge limit of the limiting guide rail is located at the inner frame edge of the spacing frame, and the periphery of the positioning protrusion is correspondingly located at the end side edge of the limiting guide rail, one side edge of the bracket valve plate and the inner side edge of the power box module; A cover plate, fixedly mounted on the spacing frame, wherein the inner surface of the cover plate is pressed against the support column of the bracket valve plate; The multiple solenoid valve units of the solenoid valve module correspond one-to-one to the driving cylinder, and correspond in groups to the gas driving pipelines connected in an external manner; the bracket valve plate is provided with an injection flow channel connected to the hot runner sleeve; the limit guide rail is provided with a conductive wire connecting the power box module and the solenoid valve module; the components of the driving air channel, the injection flow channel and the conductive line are separated, and the gas, glue and electricity are integrated into the gas-glue integrated module; The positioning protrusion of the spacing frame includes a side stopper and a stopper, the gap between the side stopper and the stopper is just enough for the protruding end of the limit guide rail to extend out, the inner side of the power box module is limited to the outer side of the side stopper and the stopper, and one of the side edges of the bracket valve plate is combined with an L-shaped guide bar to be limited to the inner side of the stopper; A valve needle is arranged in the hot runner sleeve, and the driving cylinder includes a piston disc connected to the valve needle, which is used to drive the valve needle to move up and down to open and close the injection port of the hot runner sleeve; wherein the multiple solenoid valve units of the solenoid valve module, the driving cylinder and the hot runner sleeve are in a one-to-one correspondence; The thickness of the spacing frame is greater than the thickness of the support valve plate and less than the sum of the height of the driving cylinder and the thickness of the support valve plate; The inner surface of the cover plate is provided with a plurality of alignment grooves for positioning the driving cylinder, and a through hole is provided at the center of the alignment groove, which is aligned with the adjustment end face of the valve needle; the driving cylinder also includes a collecting bowl installed on the bracket valve plate for collecting overflowed plastic, a driving block arranged on the collecting bowl, and a driving cylinder body arranged on the driving block, and two airway interfaces are provided on one side of the driving block for connecting the gas driving pipeline, and the piston disc moves in the driving cylinder body.

2. The hot runner system mold according to claim 1, characterized in that: The spacing frame is provided with a side notch for the gas driving pipeline to pass through and be connected to the corresponding solenoid valve unit of the solenoid valve module.

3. The hot runner system mold according to any one of claims 1-2, characterized in that: According to the insertion direction of the hot runner sleeve, the hot runner template assembly further includes modular combination of: A pad, arranged below the limiting bottom plate; An ejector plate, arranged below the pad; The mold core is arranged below the ejector plate, wherein a side pad is arranged between the pad plate and the mold core to clamp the ejector plate and form a gap between the ejector plate and the mold core; the hot runner sleeve passes through the pad plate, the ejector plate and the mold core through the tube mounting hole, and the tube mounting hole is an anti-deformation punching hole.

4. A modular assembly method for a hot runner system mold, characterized in that: For preparing the hot runner system mold as claimed in claim 1, the modular assembly method comprises the following steps: S1. Assemble a detachable and separable gas-glue integrated module, the gas-glue integrated module comprising a support valve plate, a plurality of upright hot runner sleeves installed below the support valve plate, and a plurality of driving cylinders installed above the support valve plate. The two sides of the support valve plate are installed with limit rails with one end longer than the adjacent side of the support valve plate, the side of the limit rail is installed with a solenoid valve module, the multiple protruding ends of the limit rail are installed with power box modules, and the two ends of the power box module protrude from the protruding ends of the limit rail; a plurality of support columns are arranged above the support valve plate; S2, assembling a hot runner template assembly, wherein the hot runner template assembly has a pipe mounting hole, and the hot runner template assembly includes a limiting bottom plate located at an upper layer, a spacing frame is fixedly arranged above the limiting bottom plate, and the spacing frame is provided with a positioning protrusion on the limiting opening side; S3, the air-glue circuit integrated module is placed on the limit bottom plate in a hoisting manner, the hot runner sleeve is inserted into the pipe mounting hole, the outer edge of the limit guide rail is located at the inner frame edge of the spacing frame, and the periphery of the positioning protrusion is correspondingly located at the end side edge of the limit guide rail, one side edge of the bracket valve plate and the inner side edge of the power box module; S4. The cover plate is fixedly installed on the spacing frame, and the inner surface of the cover plate is pressed against the supporting column of the bracket valve plate.

5. The modular assembly method of a hot runner system mold according to claim 4, characterized in that: The multiple solenoid valve units of the solenoid valve module, the driving cylinder and the hot runner sleeve are in a one-to-one correspondence; during the injection molding process, the injection start time of the multiple solenoid valve units opening the corresponding injection ports of the hot runner sleeve is intelligently adjusted and is not consistent; when the driving air circuit or the injection channel is blocked, after removing the cover plate, the air-glue circuit integrated module can be removed by hoisting.

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