Double-nozzle vertical injection molding machine and double-nozzle injection molding machining mold

Abstract

The double-nozzle vertical injection molding machine is characterized in that an upper mold mounting seat is fixedly mounted at the upper end of a lower mold mounting seat, and a lifting module for driving the lower mold mounting seat to lift upwards is arranged at the lower end of the lower mold mounting seat; at least two groups of injection molding units are further mounted on the upper mold mounting seat; each injection molding unit comprises a processing group for realizing injection molding work and a lifting group for realizing lifting work of the processing group; the processing group and the lifting group in each group of injection molding units are of independent processing structures; by adopting the double-independent injection molding unit and multi-cavity split-flow design, the productivity is doubled, the output in unit time is improved, and the cost is reduced and the efficiency is improved; production modes such as same-product same-color production modes and different-product different-color production modes can be flexibly switched depending on the independent characteristics of the units, and the requirements of multiple scenes are met; a special runner and independent precise control are matched, so that uniform forming precision is guaranteed, raw material pollution is avoided, and the product quality is stabilized.

Description

Technical Field

[0001] This invention belongs to the field of injection molding technology, and relates to a dual-nozzle vertical injection molding machine and a dual-nozzle injection molding mold. Background Technology

[0002] Injection molding technology, as a mainstream technology in the field of plastics processing, is widely used in the mass production of various plastic products. Its core relies on the coordinated operation of injection molding equipment and injection molds to achieve product molding by injecting molten plastic into the mold cavity. Most existing injection molding equipment adopts a matching structure of a single injection unit, a single injection port, and a single mold cavity. That is, after the molten plastic is injected into the mold through a single injection unit, it is distributed to multiple cavities through runners to complete the molding process.

[0003] However, the aforementioned traditional structure has significant drawbacks: on the one hand, the injection volume and injection pressure of a single injection unit are limited by the equipment parameters. When it is necessary to mass-produce products of multiple specifications or significantly increase production capacity, it is necessary to increase the number of equipment or replace the mold, resulting in low production efficiency and high equipment investment costs. On the other hand, the design of a single injection unit and a single runner system cannot achieve simultaneous molding of products of different materials and colors. Moreover, when a cavity malfunctions or a small batch trial is required, the entire machine must be stopped and adjusted, resulting in extremely poor production flexibility and difficulty in adapting to the market demand for multiple varieties and small batches. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A dual-nozzle vertical injection molding machine includes: a processing table and an upper mold mounting base and a lower mold mounting base mounted on the processing table;

[0006] The upper mold mounting base is fixedly installed on the upper end of the lower mold mounting base, and the lower end of the lower mold mounting base is provided with a lifting module for driving it to move up and down.

[0007] The upper mold mounting base is also equipped with at least two sets of injection molding units, each including a processing group for performing injection molding and a lifting group for lifting the processing group; and the processing group and lifting group in each injection molding unit are independent processing structures.

[0008] As a further embodiment of the present invention: the processing unit is installed on the lifting unit and includes: a drive motor, a material pipe, a feeding rod and a nozzle;

[0009] A segmented heating coil is fitted around the outer circumference of the material tube, and the heating coil is in close contact with the surface of the material tube; the feeding rod is set inside the material tube and is connected to the drive motor; the nozzle is set at the discharge position at the lower end of the material tube; and the upper mold mounting base is formed with an injection perforation for the downward movement of the feeding tube.

[0010] As a further aspect of the present invention: the outer wall of the feed section of the feed pipe is provided with a feed pipe that communicates with the inside of the pipe; and a feed hopper is also provided at the feed end of the feed pipe.

[0011] As a further aspect of the present invention: the lifting assembly includes at least two sets of parallel-arranged lifting hydraulic cylinders, the lifting hydraulic cylinders extending upward, and the piston rod of the lifting hydraulic cylinders is equipped with a mounting seat for mounting the processing assembly.

[0012] A dual-nozzle vertical injection molding machine is used for processing in conjunction with the aforementioned dual-nozzle vertical injection molding machine. The injection mold includes: an upper molding mold and a lower molding mold. The upper molding mold is provided with at least two sets of injection ports. The mold is provided with molding groups corresponding to the number of injection ports, and the injection ports and molding groups are one-to-one. Each molding group includes multiple molding cavities, and each set of injection ports is connected to each molding cavity in the corresponding molding group by an injection flow channel.

[0013] The beneficial effects of this invention are:

[0014] 1. Doubled Capacity and Significantly Optimized Production Efficiency: Utilizing two independent injection molding units with a multi-cavity flow distribution design, the machine doubles its capacity within the same production cycle compared to traditional single-unit injection molding machines. Simultaneous injection molding by both units allows for the simultaneous molding of large batches of products in one go, significantly increasing output per unit time, effectively shortening the total production time for batches, reducing time costs and unit product manufacturing costs, and helping companies increase production capacity and market responsiveness.

[0015] 2. Flexible and diverse production modes to adapt to various scenarios: Leveraging the independent operation of the two injection molding units, multiple production modes can be flexibly switched. It can simultaneously process the same product using the same color raw material to meet the needs of large-scale standardized production; it can also simultaneously process two different specifications of products using two different colors or materials, achieving simultaneous production or composite molding of multiple varieties and colors. Without changing molds or adding equipment, it can adapt to various scenarios such as large-scale standardized production, multi-variety mixed production, and small-batch trial production, significantly improving production flexibility and order adaptability.

[0016] 3. Stable molding precision and controllable product quality: The combination of a dedicated injection runner and precise control of independent injection units avoids the inconsistent material filling problems caused by uneven distribution of injection volume and pressure in traditional single-unit feeding systems. Each of the two units independently controls process parameters such as temperature, pressure, and injection speed, ensuring stable and uniform material filling in each molding cavity, significantly improving product dimensional accuracy and molding consistency. In multi-color and multi-material production, it also avoids cross-contamination of raw materials, guaranteeing product appearance and performance quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the injection molding mechanism of the present invention.

[0018] Figure 2 This is a schematic diagram of the injection molding unit in this invention.

[0019] Figure 3 This is a cross-sectional view of the injection molding unit in this invention.

[0020] Figure 4 This is another structural schematic diagram of the injection molding unit in this invention.

[0021] Figure 5 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the injection mold structure of the present invention.

[0023] Figure 7 This is another structural schematic diagram of the injection mold of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In the embodiments of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Please see Figures 1-7 In this embodiment of the invention, a dual-nozzle vertical injection molding machine includes: a processing machine base 4 and an upper mold mounting base 142 and a lower mold mounting base 143 mounted on the processing machine base 4;

[0029] The upper mold mounting base 142 is fixedly installed on the upper end of the lower mold mounting base 143, and the lower end of the lower mold mounting base 143 is provided with a lifting module 5 for driving it to move up and down. During processing, the upper mold and lower mold of the injection mold are respectively installed on the upper mold mounting base 142 and the lower mold mounting base 143. The lower mold is driven to rise and close with the upper mold through the lifting module 5.

[0030] At least two sets of injection molding units 1 are also installed on the upper mold mounting base 142. Each injection molding unit 1 includes a processing group 1A for performing injection molding and a lifting group 1B for lifting the processing group 1A. After the injection mold completes the mold closing operation, the lifting group 1B in the injection molding unit 1 drives the processing group 1A to descend, cooperating with the injection mold to perform injection molding. The processing group 1A and the lifting group 1B in each injection molding unit 1 are independent processing structures. During processing, the two sets of injection molding units 1 can perform independent processing actions, which can support multiple sets of injection molding units 1 to simultaneously execute differentiated injection molding processes. This can not only complete synchronous glue injection operations for different cavities of the same mold, increasing the output of finished products in a single injection, but also allow any set of injection molding units 1 to be started and stopped individually according to production needs, effectively reducing the ineffective consumption of energy and materials in small-batch trial production or local glue replenishment scenarios.

[0031] Meanwhile, the independent operation mode of each unit greatly reduces the mutual interference between processes. When a certain injection molding unit 1 malfunctions and needs to be repaired, the other units can maintain normal operation, avoiding the production capacity loss caused by the shutdown of the entire line.

[0032] Furthermore, the processing unit 1A is installed on the lifting unit 1B and includes: a drive motor 11, a material tube 16, a feeding rod 18, and a nozzle 17;

[0033] A segmented heating coil 15 is fitted around the outer circumference of the material tube 16. The heating coil 15 is in close contact with the surface of the material tube 16 and converts electrical energy into heat energy to provide segmented heating for the raw material inside the material tube 16. The feeding rod 18 is set inside the material tube 16, and the drive motor 11 is set at the upper end of the material tube 16. The upper end of the feeding rod 18 passes through the material tube 16 and is connected to the drive motor 11 for transmission. The nozzle 17 is set at the discharge position at the lower end of the material tube 16. The upper mold mounting base 142 is formed with an injection hole 21 for the material tube 16 to move downward. After the injection mold completes the mold closing operation, the lifting group 1B drives the lifting group 1B to move downward. The nozzle 17 passes through the injection hole 21 and docks with the injection port 61 of the injection mold.

[0034] Then, the drive motor 11 drives the feeding rod 18 to rotate. The feeding rod 18 is a screw structure. When it rotates, it uses the spiral thrust to push the heated and melted plastic raw material in the material tube 16 toward the nozzle 17, and then injects it into the injection mold through the nozzle 17.

[0035] Furthermore, the outer wall of the feed section of the feed pipe 16 is provided with a feed pipe 13 that communicates with the inside of the pipe, and the feed operation of injection molding is realized through the feed pipe 13; and a feed hopper 12 is also provided at the feed end of the feed pipe 13.

[0036] Furthermore, the lifting assembly 1B includes at least two sets of parallel-arranged lifting hydraulic cylinders 15, which extend upwards, and the piston rods of the lifting hydraulic cylinders 15 are equipped with mounting seats 14 for mounting the processing assembly 1A; wherein the top end of the material tube 16 in the processing assembly 1A is fixed in the mounting seat 14, and the lifting hydraulic cylinders 15 are fixed at the upper end of the mounting seat 14 by support columns.

[0037] This invention also provides a dual-nozzle injection molding die, which is used in conjunction with the above-mentioned dual-nozzle vertical injection molding machine. The injection mold includes an upper molding die 6 and a lower molding die 7, which are respectively installed on an upper mold mounting base 142 and a lower mold mounting base 143. The upper molding die 6 is provided with at least two sets of injection ports 61, which correspond one-to-one with the injection unit 1.

[0038] The mold is equipped with molding groups 64 corresponding to the number of injection ports 61, with each injection port 61 corresponding to one molding group 64. Each molding group 64 includes multiple molding cavities 63, and each injection port 61 is connected to each molding cavity 63 in the corresponding molding group by an injection flow channel 62, which is used to distribute and transport the molten plastic to each molding cavity 63 to complete the molding. During injection, multiple injection units 1 simultaneously inject molten plastic into the corresponding injection ports 61, which is then evenly distributed to each molding cavity 63 through the flow channel, completing the simultaneous molding of a large batch or multiple specifications of products at one time. This significantly improves production efficiency and output per unit time compared to traditional single-group injection molds.

[0039] The injection molding device described in this patent also includes an integrated unit A, which comprises a hydraulic system that provides power to the lifting assembly, and a control system for controlling process parameters such as clamping force, injection speed, and processing temperature. It should be noted that the aforementioned hydraulic system, control system, and integrated unit A are not the core of the technical solution to be protected in this application, and they are all conventional techniques known in the art. Their structures and working principles are widely understood and applied by those skilled in the art; therefore, this application will not elaborate further on their specific structures, connections, and control logic.

[0040] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 said element.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-tip vertical injection molding machine characterized by, include: The processing machine base and the upper mold mounting base and lower mold mounting base mounted on the processing machine base; The upper mold mounting base is fixedly installed on the upper end of the lower mold mounting base, and the lower end of the lower mold mounting base is provided with a lifting module for driving it to move up and down. The upper mold mounting base is also equipped with at least two sets of injection molding units, each including a processing group for performing injection molding and a lifting group for lifting the processing group; and the processing group and lifting group in each injection molding unit are independent processing structures.

2. A dual nozzle vertical injection molding machine according to claim 1, wherein The processing unit is installed on the lifting unit and includes: a drive motor, a material tube, a feeding rod, and a nozzle; A segmented heating coil is fitted around the outer circumference of the material tube, and the heating coil is in close contact with the surface of the material tube; the feeding rod is set inside the material tube and is connected to the drive motor; the nozzle is set at the discharge position at the lower end of the material tube; and the upper mold mounting base is formed with an injection perforation for the downward movement of the feeding tube.

3. A dual nozzle vertical injection molding machine according to claim 2, wherein, The outer wall of the feed section of the feed pipe is provided with a feed pipe that communicates with the inside of the pipe; and a feed hopper is also provided at the feed end of the feed pipe.

4. A dual nozzle vertical injection molding machine according to claim 1 wherein, The lifting assembly includes: at least two sets of parallel-arranged lifting hydraulic cylinders, the lifting hydraulic cylinders extending upwards, and the piston rods of the lifting hydraulic cylinders are equipped with mounting seats for mounting the machining assembly.

5. A dual nozzle vertical injection molding machine for use with a dual nozzle vertical injection molding machine as claimed in any one of claims 1 to 4, the injection mold comprising: The upper mold and the lower mold are formed. The upper mold is provided with at least two sets of injection ports. The mold is provided with a corresponding number of molding groups, and the injection ports and molding groups are one-to-one. Each molding group includes multiple molding cavities, and each set of injection ports is connected to each molding cavity in the corresponding molding group by an injection flow channel.

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