A mold capable of hot runner split flow adjustment

Abstract

The application discloses a mold capable of hot runner shunt adjustment, and belongs to the technical field of injection molding equipment, and has the technical scheme as follows: a mold frame assembly, a cavity mold plate group and a hot runner system are provided, the hot runner system comprises a shunt plate, a glue injection device installed on the shunt plate, a hot nozzle device installed on the shunt plate, heating pipes distributed on the shunt plate and a mixing system used for mixing materials of different colors and connected with the hot nozzle device; the shunt plate is provided with a first runner and a second runner, the first runner and the second runner correspond to the glue injection device respectively, and the hot nozzle device is connected with the first runner and the second runner. The application improves the mixing stability of two materials in the production process of the gradual color injection molding product and the precision of the gradual color adjustment.

Description

A mold capable of hot runner flow regulation Technical Field

[0001] This application belongs to the technical field of injection molding equipment, and in particular relates to a mold capable of adjusting the hot runner flow. Background Technology

[0002] With the continuous development of injection molding technology, especially the increasingly widespread application of two-color injection molding technology in the injection molding machine field, the market has begun to raise new demands. Plastic products are also constantly developing towards precision, diversification, lightweighting, and color enhancement. For two-color product injection molding methods, existing technologies typically employ two sets of molds. The first mold is used for a single injection molding process. After cooling and solidification, the intermediate product is removed and placed in the second mold for a second injection molding process. After cooling and solidification, the final product is obtained. This method is relatively complex, requiring a cooling and solidification stage after the first injection molding before the second molding can proceed, and necessitates the use of two sets of molds.

[0003] A Chinese patent with publication number CN216373168U discloses a gradient color and sandwich preform hot runner structure, including a flow divider, a hot nozzle device, a dispensing device, a driving device, and a valve needle. The first dispensing port and the first dispensing port of the flow divider are connected through a first flow channel, and the second dispensing port and the second dispensing port are connected through a second flow channel. The dispensing device is installed above the flow divider and is connected to the first dispensing port and the second dispensing port respectively. The hot nozzle device is installed below the flow divider and has a first dispensing port, a second dispensing port, and a third dispensing port inside. The driving device is installed above the flow divider and is used to drive the valve needle to move up and down to close or open the first dispensing port and / or the second dispensing port and / or the third dispensing port.

[0004] While the aforementioned hot runner structure can be used for processing gradient color injection molded products, the mixing effect of the two materials is poor, resulting in unstable quality of the gradient molded products. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this application is to address the aforementioned technical problems by providing a mold capable of adjusting the hot runner flow, thereby improving the mixing stability of two materials during the production of gradient color injection molded products and enhancing the precision of gradient color adjustment.

[0006] This application provides a mold capable of hot runner flow regulation, including a mold base assembly, a cavity template assembly, and a hot runner system, wherein the hot runner system includes:

[0007] Distributor plate;

[0008] The dispensing device is installed on the distributor plate;

[0009] The hot nozzle assembly is mounted on the distributor plate;

[0010] Heating elements are distributed on the manifold;

[0011] A mixing system for mixing materials of different colors, the mixing system being connected to a hot nozzle device;

[0012] The flow divider plate is provided with a first flow channel and a second flow channel, and the first flow channel and the second flow channel correspond to the dispensing device respectively. The hot nozzle device is connected to both the first flow channel and the second flow channel.

[0013] Molten injection material is injected into the hot runner system, and then enters the cavity template assembly under pressure for molding. The injection material is distributed through a manifold. The injection device corresponds to the injection molding machine, and the hot nozzle device is connected to the molding cavity on the cavity template assembly. The heating pipe ensures that the injection material in the hot runner system does not cool and solidify. When producing gradient color injection molded products, the two materials are mixed through a mixing system, which can adjust the gradient color effect. The first runner and the second runner are connected to different injection devices to ensure that the two materials do not interfere with each other before mixing. The mixing system is connected to the hot nozzle device to achieve rapid and stable mixing of the two materials.

[0014] Furthermore, the hot nozzle device includes:

[0015] Drive unit;

[0016] The valve needle is installed and connected to the drive unit.

[0017] The flow chamber is aligned with the axis of the hot nozzle assembly;

[0018] Storage cavity, surrounding the heating nozzle assembly;

[0019] The insulation layer covers the outside of the heating nozzle device;

[0020] The first piston is placed in the storage cavity;

[0021] The movable blocks are installed inside the hot nozzle device and are evenly distributed around the axis.

[0022] Adjustment mechanism, used to adjust the movable block;

[0023] A buffer mechanism is used to buffer the first piston;

[0024] The metering mechanism is located on the first piston;

[0025] The first flow channel is connected to the flow cavity, the second flow channel is connected to the storage cavity, the hot nozzle device is provided with a movable groove adapted to the movable block, a spacer is provided between adjacent movable grooves, and the movable block is provided with a flow groove.

[0026] The driving device is used to drive the valve needle to move along the axial direction. The valve needle controls the opening and closing between the hot nozzle device and the molding cavity. The first flow channel is connected to the flow cavity, and the second flow channel is connected to the storage cavity. When the movable block is moved by the adjustment mechanism, the movable block extends obliquely in the movable groove. The cross-sectional area of ​​the movable block in the corresponding area of ​​the flow cavity is reduced, generating the Venturi effect. The storage cavity is connected through the flow groove, and the material in the storage cavity is extracted, so that the two materials are mixed together. As the size of the movable block extension increases, its extraction speed from the storage cavity increases, and it can increase the proportion of the material in the storage cavity in the overall material, thereby increasing the color depth of the gradient color. The heat insulation layer ensures that the material in the hot nozzle device has fluidity. When the material in the storage cavity increases or decreases, the first piston moves. The buffer mechanism improves the stability of the first piston movement. The metering mechanism is used to control the required amount of colored material for a single gradient color injection molded product. When the movable block extends obliquely, there is a gap and interval between adjacent movable blocks. There are two or more movable blocks and they are evenly distributed around the axis.

[0027] Furthermore, the adjustment mechanism includes:

[0028] Adjusting ring;

[0029] The first motor is mounted on the heating nozzle device;

[0030] The first lead screw is mounted on the output shaft of the first motor, and the first lead screw is adapted to the adjusting ring;

[0031] The first sliding part is connected to the movable block;

[0032] The adjusting ring is provided with a first sliding groove that is adapted to the first sliding part.

[0033] The first motor drives the first lead screw to rotate, causing the adjusting ring to move and pushing the movable block to move obliquely in the movable groove. At the same time, the first sliding part connected to the movable block moves in the first sliding groove, thereby improving the structural stability between the adjusting ring and the movable block.

[0034] Furthermore, the buffer mechanism includes:

[0035] The buffer plate is connected to the first piston;

[0036] The buffer component has several hinges to the hot nozzle device and is evenly distributed along the axis of the hot nozzle device.

[0037] An adjusting element is located at one end of the buffer element;

[0038] A connecting rope, one end of which is connected to an adjusting component, and the other end of which is connected to a first sliding part;

[0039] Guide wheel, mounted on the hot nozzle device and adapted to the connecting rope;

[0040] The first spring is positioned between the adjusting element and the heating nozzle device;

[0041] The damper is positioned between the adjusting element and the hot nozzle assembly;

[0042] The buffer is provided with a second sliding part, and the adjusting part is provided with a second sliding groove adapted to the second sliding part.

[0043] When the movable block opens, the material in the storage cavity is drawn into the flow cavity. The first piston moves, and the buffer mechanism prevents the material in the storage cavity from flowing out rapidly. As the movable block moves out of the movable slot, the guide wheel guides the movement of the connecting rope. The connecting rope pulls the adjusting component, causing the buffer component to open towards the buffer plate. When the buffer plate moves with the first piston, it acts on the buffer component, causing the buffer component to rotate and the adjusting component to move. The first spring and damper provide buffering. As the movable block moves out of the movable slot, the adjusting component moves continuously, and the buffering effect of the buffer component decreases continuously. This allows it to adapt to the opening position of the movable block and the corresponding mixing ratio of the two materials. When the movable block closes, the buffer component is in a contracted state under the action of the first spring. After the buffer component opens, it can also prevent the buffer plate from regressing.

[0044] Furthermore, the quantitative mechanism includes:

[0045] The mounting base is movably connected to the first piston;

[0046] The second motor is mounted on the mounting base;

[0047] The second lead screw is mounted on the output shaft of the second motor;

[0048] The metering seat is placed on the second lead screw;

[0049] A push plate seat is movably connected to a metering seat, and the push plate seat is connected to a first piston;

[0050] The second spring is located on both sides of the push plate base;

[0051] Guide rod, adapted to push plate seat;

[0052] The mounting base is installed and connected to the buffer plate, and the two ends of the metering seat are provided with abutment parts, which abut against the second spring.

[0053] The distance between the mounting base and the first piston is adjusted by the second motor. When the first piston is reset due to the filling of material in the storage cavity, the total amount of material that can be filled in the storage cavity is controlled. The metering seat cooperates with the second lead screw, and the guide rod is adapted to the push plate seat. The buffer device buffers the jerky movement through the buffer component and the buffer plate. The metering seat, the push plate seat, and the second spring make the movement of the first piston smoother. The jerky buffering between the buffer component and the buffer plate is transferred to the relative movement between the metering seat and the push plate seat, which improves the stability of the first piston movement and further improves the uniformity of the color gradient of the gradient injection molded product.

[0054] Furthermore, the hybrid system includes:

[0055] Guide vanes are movably mounted on the valve needle;

[0056] The first cavity is placed on the adjusting ring;

[0057] The second piston is placed in the first cavity and is connected to the first sliding part;

[0058] The second cavity is placed inside the valve needle;

[0059] The third piston is placed in the second chamber;

[0060] The connecting rod is connected to the third piston;

[0061] The first cavity is connected to the second cavity, and the guide vane is provided with a rotating handle, which is hinged to the connecting rod.

[0062] When the movable block is closed, the guide surface of the guide vane is parallel to the axis of the valve needle, reducing the turbulence of the guide vane on the flowing material. As the movable block opens, the two materials mix. At this time, the second piston moves under the action of the first sliding part, transmitting the change between the second piston and the first cavity to the second cavity and the third piston. The third piston moves to push the connecting rod, and the connecting rod acts on the handle to deflect the guide vane. The degree of deflection changes with the degree of opening of the movable block, ensuring that the more uniform the proportion of the two materials, the better the mixing effect. The handle and the guide vane are movably connected.

[0063] Furthermore, the hybrid system also includes:

[0064] The first rack is mounted on the buffer plate;

[0065] The first gear is adapted to the first rack;

[0066] The second gear is connected to the first gear via a shaft;

[0067] The third gear corresponds to the second gear and is mounted on the valve needle;

[0068] A connecting seat is placed between the drive device and the valve needle, and the connecting seat and the valve needle are connected by a bearing. When the material in the storage chamber flows into the flow chamber, the first piston moves, causing the first rack to move. The first rack meshes with the first gear, which is a spur gear, while the second and third gears are bevel gears. Through the transmission of the first, second, and third gears, the valve needle can rotate slowly, further improving the turbulence of the guide vane on the material. The connecting seat ensures the relative movement between the valve needle and the drive device. When the valve needle is open, the second and third gears engage.

[0069] Further, the specific adjustment steps include:

[0070] S1, the valve needle is opened by the drive device, and one color of material passes through and is injected. When the color gradient needs to be started, the adjustment ring is moved by the first motor, and the movable block is pushed into the flow chamber. When the molten material in the flow chamber flows through, the colored molten material in the storage chamber is extracted and mixed.

[0071] S2, When the moving block moves, the guide vane deflects;

[0072] S3, when the movable block moves, it pulls the adjusting part to move, causing the buffer to open, and buffering when the first piston moves, causing the valve needle to rotate at a relatively slow speed.

[0073] S4, when the dual-material mixing stage is completed, the moving block is quickly reset by the drive device, and then the corresponding material is added to the storage cavity.

[0074] The two materials are mixed by opening the active block, and the mixing ratio between the two materials changes slowly, thus improving the control precision of the change.

[0075] The beneficial effects of this application are:

[0076] 1. The hot nozzle device is connected to the molding cavity on the cavity template assembly. The heating pipe ensures that the injection molding material in the hot runner system will not cool and solidify. When producing gradient color injection molded products, the two materials are mixed through the mixing system, and the gradient color effect can be adjusted. The mixing system is connected to the hot nozzle device to achieve rapid and stable mixing of the two materials.

[0077] 2. The first flow channel is connected to the flow cavity, and the second flow channel is connected to the storage cavity. When the movable block moves under the control of the adjustment mechanism, the movable block extends obliquely in the movable groove. The cross-sectional area that can flow in the corresponding area of ​​the movable block in the flow cavity decreases, generating the Venturi effect. The storage cavity is connected through the flow groove, and the material in the storage cavity is extracted, so that the two materials are mixed together. As the size of the extended movable block increases, the speed at which it extracts the material from the storage cavity increases, and it can increase the proportion of the material in the storage cavity in the overall material, thereby increasing the color depth of the gradient color.

[0078] 3. When the material in the storage cavity is increased or decreased, the first piston moves. The stability of the first piston movement is improved by the buffer mechanism. The quantitative mechanism is used to control the amount of colored material required for a single gradient injection molded product. When the movable block extends obliquely, there is a gap and interval between adjacent movable blocks. There are two or more movable blocks and they are evenly distributed around the axis.

[0079] 4. When the movable block opens, the material in the storage cavity is drawn into the flow cavity. The first piston moves, and the buffer mechanism prevents the material in the storage cavity from flowing out quickly. As the movable block moves out of the movable slot, the guide wheel guides the movement of the connecting rope. The connecting rope pulls the adjusting component, causing the buffer component to open towards the buffer plate. When the buffer plate moves with the first piston, the buffer plate acts on the buffer component, causing the buffer component to rotate and the adjusting component to move. The first spring and damper provide buffering. As the movable block moves out of the movable slot, the adjusting component moves continuously, and the buffering effect of the buffer component decreases continuously, adapting to the opening position of the movable block and the corresponding mixing ratio of the two materials. Attached Figure Description

[0080] Figure 1 is a schematic diagram of the structure of the injection mold of this application;

[0081] Figure 2 is a schematic diagram of the hot runner system of this application;

[0082] Figure 3 is an isometric view of the flow divider of this application;

[0083] Figure 4 is a schematic diagram of the first and second flow channels of this application;

[0084] Figure 5 is a schematic diagram of the structure of the flow divider of this application;

[0085] Figure 6 is an enlarged view of section A in Figure 5 of this application;

[0086] Figure 7 is an enlarged view of section B in Figure 6 of this application;

[0087] Figure 8 is an enlarged view of point C in Figure 6 of this application;

[0088] Figure 9 is an enlarged view of point D in Figure 5 of this application;

[0089] Figure 10 is a schematic diagram of the quantitative mechanism of this application;

[0090] Figure 11 is a schematic diagram of the structure of the hybrid system of this application;

[0091] Figure 12 is a top view of the guide vane structure of this application;

[0092] In the attached figures, the reference numerals are as follows: 001, mold base assembly; 002, cavity template assembly; 003, hot runner system; 100, manifold; 110, first runner; 120, second runner; 200, injection device; 300, hot nozzle device; 310, drive device; 320, valve needle; 330, flow cavity; 340, storage cavity; 350, first piston; 360, insulation layer; 370, movable block; 371, first sliding part; 372, flow groove; 380, movable groove; 400, heating tube; 500, mixing system; 510, guide vane; 520, first cavity; 530, second piston; 540, second cavity; 550, third piston; 560, connecting rod; 570, handle; 580, first... Rack; 581, First Gear; 582, Second Gear; 583, Third Gear; 584, Connecting Seat; 600, Adjusting Mechanism; 610, Adjusting Ring; 620, First Motor; 630, First Lead Screw; 640, First Sliding Groove; 700, Buffer Mechanism; 710, Buffer Plate; 720, Buffer Component; 721, Second Sliding Part; 730, Adjusting Component; 731, Second Sliding Groove; 740, Connecting Rope; 750, Guide Wheel; 760, First Spring; 770, Damper; 800, Metering Mechanism; 810, Mounting Seat; 820, Second Motor; 830, Second Lead Screw; 840, Metering Seat; 841, Abutment Part; 850, Push Plate Seat; 860, Second Spring; 870, Guide Rod. Detailed Implementation

[0093] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0094] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0095] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0096] Example 1:

[0097] As shown in Figures 1-5, this application provides a mold capable of hot runner flow regulation, including a mold frame assembly 001, a cavity template assembly 002, and a hot runner system 003, wherein the hot runner system 003 includes:

[0098] 100mm splitter plate;

[0099] The dispensing device 200 is installed on the distributor plate 100;

[0100] A hot nozzle device 300 is installed on the distributor plate 100;

[0101] Heating elements 400 are distributed on the distributor plate 100;

[0102] A mixing system 500 is used to mix materials of different colors, and the mixing system 500 is connected to a hot nozzle device 300;

[0103] The flow divider 100 is provided with a first flow channel 110 and a second flow channel 120, which correspond to the dispensing device 200 respectively. The hot nozzle device 300 is connected to both the first flow channel 110 and the second flow channel 120.

[0104] Molten injection material is injected into the hot runner system 003, and then enters the cavity template assembly 002 under pressure for molding. The injection material is divided by the manifold 100. The injection device 200 corresponds to the injection molding machine. The hot nozzle device 300 is connected to the molding cavity on the cavity template assembly 002. The heating pipe 400 ensures that the injection material in the hot runner system 003 does not cool and solidify. When producing gradient color injection molded products, the two materials are mixed by the mixing system 500, and the gradient color effect can be adjusted. The first runner 110 and the second runner 120 are connected to different injection devices 200 respectively, which can ensure that the two materials do not interfere with each other before mixing. The mixing system 500 is connected to the hot nozzle device 300 to achieve rapid and stable mixing of the two materials.

[0105] Example 2:

[0106] As shown in Figures 5 and 10, this embodiment of the application provides a mold capable of hot runner flow distribution adjustment. In addition to the aforementioned technical features, the hot nozzle device 300 further includes:

[0107] Drive unit 310;

[0108] Valve needle 320 is installed and connected to drive device 310;

[0109] The flow cavity 330 is aligned with the axis of the hot nozzle device 300;

[0110] Storage cavity 340 surrounds heating nozzle device 300;

[0111] The insulation layer 360° covers the outside of the heating nozzle device 300;

[0112] The first piston 350 is placed in the storage cavity 340;

[0113] The movable block 370 is installed inside the hot nozzle device 300 and is evenly distributed around the axis.

[0114] Adjustment mechanism 600 is used to adjust movable block 370;

[0115] The buffer mechanism 700 is used to buffer the first piston 350;

[0116] The metering mechanism 800 is placed on the first piston 350;

[0117] The first flow channel 110 is connected to the flow cavity 330, the second flow channel 120 is connected to the storage cavity 340, the hot nozzle device 300 is provided with a movable groove 380 adapted to the movable block 370, and a spacer is provided between adjacent movable grooves 380. The movable block 370 is provided with a flow groove 372.

[0118] The drive device 310 drives the valve needle 320 to move along the axial direction, controlling the opening and closing of the hot nozzle device 300 and the molding cavity. The first flow channel 110 is connected to the flow cavity 330, and the second flow channel 120 is connected to the storage cavity 340. When the movable block 370 moves under the control of the adjustment mechanism 600, the movable block 370 extends obliquely in the movable groove 380. The cross-sectional area of ​​the movable block 370 in the corresponding area of ​​the flow cavity 330 decreases, generating a Venturi effect. The storage cavity 340 is connected through the flow groove 372, extracting material from the storage cavity 340 and mixing the two materials. As the extension size of the movable block 370 increases, the extraction... The material velocity in the storage cavity 340 increases, and the proportion of material in the storage cavity 340 in the overall material is increased, thereby increasing the color depth of the gradient color. The insulation layer 360 ensures the fluidity of the material in the hot nozzle device 300. When the material in the storage cavity 340 is increased or decreased, the first piston 350 moves. The buffer mechanism 700 improves the stability of the first piston 350 during movement. The metering mechanism 800 is used to control the required amount of colored material for a single gradient color injection molded product. When the movable block 370 extends obliquely, there is a gap and interval between adjacent movable blocks 370. There are two or more movable blocks 370 and they are evenly distributed around the axis.

[0119] Example 3:

[0120] As shown in Figures 5-7, this application embodiment provides a mold capable of hot runner flow distribution adjustment. In addition to the above-mentioned technical features, the adjustment mechanism 600 further includes:

[0121] Adjusting ring 610;

[0122] The first motor 620 is mounted on the hot nozzle device 300;

[0123] The first lead screw 630 is mounted on the output shaft of the first motor 620, and the first lead screw 630 is adapted to the adjusting ring 610;

[0124] The first sliding part 371 is connected to the movable block 370;

[0125] The adjusting ring 610 is provided with a first sliding groove 640 that is adapted to the first sliding part 371.

[0126] The first motor 620 drives the first lead screw 630 to rotate, causing the adjusting ring 610 to move and push the movable block 370 to move obliquely in the movable groove 380. At the same time, the first sliding part 371 connected to the movable block 370 moves in the first sliding groove 640, thereby improving the structural stability between the adjusting ring 610 and the movable block 370.

[0127] Example 4:

[0128] As shown in Figures 5, 6, and 8, this embodiment of the application provides a mold capable of hot runner flow distribution adjustment. In addition to the aforementioned technical features, the buffer mechanism 700 further includes:

[0129] The buffer plate 710 is connected to the first piston 350;

[0130] The buffer 720 is provided with a plurality of components hinged to the hot nozzle device 300 and evenly distributed along the axis of the hot nozzle device 300.

[0131] Adjustment component 730 is located at one end of buffer component 720;

[0132] The connecting rope 740 has one end connected to the adjusting member 730 and the other end connected to the first sliding part 371;

[0133] Guide wheel 750 is mounted on hot nozzle device 300 and is compatible with connecting rope 740;

[0134] The first spring 760 is positioned between the adjusting member 730 and the hot nozzle device 300;

[0135] The damper 770 is positioned between the adjusting member 730 and the hot nozzle device 300;

[0136] The buffer 720 is provided with a second sliding part 721, and the adjusting part 730 is provided with a second sliding groove 731 adapted to the second sliding part 721.

[0137] When the movable block 370 opens, the material in the storage cavity 340 is drawn into the flow cavity 330. The first piston 350 moves, and the buffer mechanism 700 prevents the material in the storage cavity 340 from flowing out rapidly. As the movable block 370 moves out of the movable groove 380, the guide wheel 750 guides the movement of the connecting rope 740. The connecting rope 740 pulls the adjusting member 730, causing the buffer member 720 to open towards the buffer plate 710. When the buffer plate 710 moves with the first piston 350, the buffer plate 710 acts on the buffer member 720. On the 0, the buffer 720 is rotated, causing the adjusting member 730 to move. Buffering is achieved through the first spring 760 and the damper 770. As the movable block 370 moves outward from the movable slot 380, the adjusting member 730 moves continuously, and the buffering effect of the buffer 720 decreases continuously. It can be adapted to the opening position of the movable block 370 and the corresponding mixing ratio of the two materials. When the movable block 370 is closed, the buffer 720 is in a contracted state under the action of the first spring 760. After the buffer 720 is opened, it can also prevent the buffer plate 710 from regressing.

[0138] Example 5:

[0139] As shown in Figure 10, this embodiment of the application provides a mold capable of hot runner flow regulation. In addition to the above-mentioned technical features, the metering mechanism 800 further includes:

[0140] Mounting base 810 is movably connected to first piston 350;

[0141] The second motor 820 is mounted on the mounting base 810;

[0142] The second lead screw 830 is mounted on the output shaft of the second motor 820;

[0143] The metering seat 840 is placed on the second lead screw 830;

[0144] The push plate seat 850 is movably connected to the metering seat 840, and the push plate seat 850 is connected to the first piston 350;

[0145] The second spring 860 is located on both sides of the push plate base 850;

[0146] Guide rod 870 is compatible with push plate seat 850;

[0147] The mounting base 810 is installed and connected to the buffer plate 710, and the two ends of the metering seat 840 are provided with abutment parts 841, which abut against the second spring 860.

[0148] The distance between the mounting base 810 and the first piston 350 is adjusted by the second motor 820. When the first piston 350 is reset due to the filling material in the storage cavity 340, the total amount of material that can be filled in the storage cavity 340 is controlled. The metering seat 840 cooperates with the second lead screw 830, and the guide rod 870 is adapted to the push plate seat 850. When the buffer device buffers through the buffer component 720 and the buffer plate 710, there is a jerking. The metering seat 840, the push plate seat 850, and the second spring 860 make the movement of the first piston 350 smoother. The jamming buffer between the buffer component 720 and the buffer plate 710 is transferred to the relative movement between the metering seat 840 and the push plate seat 850, which improves the stability of the movement of the first piston 350 and further improves the uniformity of the color gradient of the gradient injection molded product.

[0149] Example 6:

[0150] As shown in Figures 9, 11, and 12, this application embodiment provides a mold capable of hot runner flow splitting and adjustment. In addition to the aforementioned technical features, the mixing system 500 further includes:

[0151] Guide vane 510 is movably mounted on valve needle 320;

[0152] The first cavity 520 is placed on the adjusting ring 610;

[0153] The second piston 530 is placed in the first cavity 520 and is connected to the first sliding part 371;

[0154] The second cavity 540 is placed inside the valve needle 320;

[0155] The third piston 550 is placed in the second cavity 540;

[0156] Connecting rod 560 is connected to the third piston 550;

[0157] The first cavity 520 is connected to the second cavity 540, and the guide vane 510 is provided with a handle 570, which is hinged to the connecting rod 560.

[0158] When the movable block 370 is closed, the guide surface of the guide vane 510 is parallel to the axis of the valve needle 320, reducing the turbulence effect of the guide vane 510 on the flowing material. As the movable block 370 opens, the two materials are mixed. At this time, the second piston 530 moves under the action of the first sliding part 371, transmitting the change between the second piston 530 and the first cavity 520 to the second cavity 540 and the third piston 550. The third piston 550 moves to push the connecting rod 560. The connecting rod 560 acts on the handle 570 to deflect the guide vane 510. The degree of deflection changes with the degree of opening of the movable block 370, ensuring that the more uniform the proportion of the two materials, the better the mixing effect. The handle 570 is movably connected to the guide vane 510.

[0159] Furthermore, the hybrid system 500 also includes:

[0160] The first rack 580 is installed on the buffer plate 710;

[0161] The first gear 581 is adapted to the first rack 580;

[0162] The second gear 582 is connected to the first gear 581 via a shaft.

[0163] The third gear 583 corresponds to the second gear 582 and is mounted on the valve needle 320;

[0164] The connecting seat 584 is placed between the driving device 310 and the valve needle 320, and the connecting seat 584 and the valve needle 320 are connected by a bearing.

[0165] When the material in the storage cavity 340 flows into the flow cavity 330, the first piston 350 moves, causing the first rack 580 to move. The first rack 580 meshes with the first gear 581, which is a spur gear. The second gear 582 and the third gear 583 are bevel gears. Through the transmission of the first gear 581, the second gear 582, and the third gear 583, the valve needle 320 can rotate slowly, further improving the turbulence of the guide vane 510 on the material. The relative movement between the valve needle 320 and the drive device 310 is ensured by the connecting seat 584. When the valve needle 320 is open, the second gear 582 and the third gear 583 cooperate.

[0166] Example 7:

[0167] This application provides a mold capable of adjusting the hot runner distribution. In addition to the aforementioned technical features, the specific adjustment steps further include:

[0168] S1, the valve needle 320 is opened by the drive device 310, and one color of material passes through and is injected. When the color gradient needs to be started, the adjustment ring 610 is moved by the first motor 620, and the movable block 370 is pushed into the flow cavity 330. When the molten material in the flow cavity 330 flows through, the colored molten material in the storage cavity 340 is extracted and mixed.

[0169] S2, when the movable block 370 moves, the guide vane 510 deflects;

[0170] S3, when the movable block 370 moves, it pulls the adjusting member 730 to move, causing the buffer member 720 to open. When the first piston 350 moves, it buffers the movement and causes the valve needle 320 to rotate at a relatively slow speed.

[0171] S4, when the dual-material mixing stage is completed, the moving block 370 is quickly reset by the drive device 310, and then the corresponding material is added to the storage cavity 340.

[0172] The two materials are mixed by opening the active block 370, and the mixing ratio between the two materials changes slowly, thus improving the control precision of the change.

[0173] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0174] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A mold capable of hot runner flow regulation, comprising a mold base assembly (001), a cavity template assembly (002), and a hot runner system (003), characterized in that, The hot runner system (003) includes: a manifold (100); a dispensing device (200) mounted on the manifold (100); a hot nozzle device (300) mounted on the manifold (100); heating tubes (400) distributed on the manifold (100); and a mixing system (500) for mixing materials of different colors, the mixing system (500) being connected to the hot nozzle device (300); wherein the manifold (100) is provided with a first flow channel (110) and a second flow channel (120), the first flow channel (110) and the second flow channel (120) corresponding to the dispensing device (200) respectively, and the hot nozzle device (300) being connected to both the first flow channel (110) and the second flow channel (120); The hot nozzle device (300) includes: a drive unit (310); a valve needle (320) mounted and connected to the drive unit (310); a flow chamber (330) coaxial with the hot nozzle device (300); a storage chamber (340) surrounding the hot nozzle device (300); a heat insulation layer (360) covering the outside of the hot nozzle device (300); a first piston (350) placed in the storage chamber (340); a movable block (370) installed in the hot nozzle device (300) and evenly distributed around the axis; an adjustment mechanism (600) for adjusting the movable block (370); a buffer mechanism (700) for buffering the first piston (350); and a metering mechanism (800) placed on the first piston (350); wherein, the first piston (350) is a valve needle (320) mounted on the hot nozzle device (300); A flow channel (110) is connected to a flow cavity (330), and a second flow channel (120) is connected to a storage cavity (340). The hot nozzle device (300) is provided with a movable groove (380) adapted to the movable block (370), and a spacer is provided between adjacent movable grooves (380). The movable block (370) is provided with a flow groove (372). The adjusting mechanism (600) includes: an adjusting ring (610); a first motor (620) mounted on the hot nozzle device (300); a first lead screw (630) mounted on the output shaft of the first motor (620), the first lead screw (630) being adapted to the adjusting ring (610); and a first sliding part (371) connected to the movable block (370). The ring (610) is provided with a first sliding groove (640) adapted to the first sliding part (371); the buffer mechanism (700) includes: a buffer plate (710) connected to the first piston (350); a buffer member (720) provided with a plurality of hinges to the hot nozzle device (300) and evenly distributed along the axis of the hot nozzle device (300); an adjusting member (730) placed at one end of the buffer member (720); a connecting rope (740) with one end connected to the adjusting member (730) and the other end connected to the first sliding part (371); a guide wheel (750) installed on the hot nozzle device (300) and adapted to the connecting rope (740); and a first spring (760) placed between the adjusting member (730) and the hot nozzle device (300).A damper (770) is positioned between the adjusting member (730) and the hot nozzle device (300); wherein the buffer member (720) is provided with a second sliding portion (721), and the adjusting member (730) is provided with a second sliding groove (731) adapted to the second sliding portion (721).

2. The mold capable of hot runner flow regulation according to claim 1, characterized in that, The metering mechanism (800) includes: a mounting base (810) movably connected to a first piston (350); a second motor (820) mounted on the mounting base (810); a second lead screw (830) mounted on the output shaft of the second motor (820); a metering seat (840) placed on the second lead screw (830); a push plate seat (850) movably connected to the metering seat (840), the push plate seat (850) being connected to the first piston (350); a second spring (860) placed on both sides of the push plate seat (850); and a guide rod (870) adapted to the push plate seat (850). The mounting base (810) is installed and connected to a buffer plate (710), and the two ends of the metering seat (840) are provided with abutment portions (841), the abutment portions (841) abutting against the second spring (860).

3. The mold capable of hot runner flow regulation according to claim 2, characterized in that, The mixing system (500) includes: a guide vane (510) movably mounted on a valve needle (320); a first cavity (520) placed on an adjusting ring (610); a second piston (530) placed in the first cavity (520), the second piston (530) being connected to a first sliding part (371); a second cavity (540) placed inside the valve needle (320); a third piston (550) placed in the second cavity (540); and a connecting rod (560) connected to the third piston (550); wherein the first cavity (520) is connected to the second cavity (540), the guide vane (510) is provided with a handle (570), the handle (570) being hinged to the connecting rod (560).

4. The mold capable of hot runner flow regulation according to claim 3, characterized in that, The hybrid system (500) further includes: a first rack (580) mounted on a buffer plate (710); a first gear (581) adapted to the first rack (580); a second gear (582) connected to the first gear (581) via a shaft; a third gear (583) corresponding to the second gear (582) and mounted on a valve needle (320); and a connecting seat (584) placed between the drive device (310) and the valve needle (320), wherein the connecting seat (584) and the valve needle (320) are connected via a bearing.

5. The mold capable of hot runner flow regulation according to claim 4, characterized in that, The specific adjustment steps include: S1, opening the valve needle (320) via the drive device (310), allowing one color of material to pass through and be injected; when a color gradient is required, driving the adjustment ring (610) via the first motor (620) to move, simultaneously pushing the movable block (370) to extend into the flow chamber (330); when the molten material in the flow chamber (330) flows through, extracting the colored molten material from the storage chamber (340) for mixing; S2, when the movable block (370)... When moving, the guide vane (510) deflects; S3, when the movable block (370) moves, the adjusting member (730) is pulled to move, so that the buffer member (720) opens, and buffering is performed when the first piston (350) moves. When the first piston (350) moves, the valve needle (320) rotates at a relatively slow speed; S4, when the dual-material mixing stage is completed, the movable block (370) is quickly reset by the drive device (310), and then the corresponding material is added to the storage cavity (340).

Images