A double injection molding machine with modular injection units and a method for disassembling and assembling the same

Abstract

The application discloses a double-injection-table modularized assembling color-mixing injection molding machine and a disassembling method thereof, and relates to the technical field of injection molding equipment.The injection molding machine comprises a first injection-table module, a second injection-table module, a glue injection module and a nozzle module.The first injection-table module comprises a first glue injection head plate, a first glue injection two-plate and a first glue injection guide rod arranged between the first glue injection head plate and the first glue injection two-plate.The second injection-table module comprises a second glue injection head plate, a second glue injection two-plate and a second glue injection guide rod arranged between the second glue injection head plate and the second glue injection two-plate.The second glue injection head plate and the second glue injection two-plate are adjustably installed on one side of the first glue injection head plate and the first glue injection two-plate through adjusting assemblies, and form cuboid structure units after installation.The second injection-table module can be integrally preassembled and quickly installed through hoisting, or can be sequentially assembled according to the order of components on site, so that the flexibility of assembly is improved, the second injection-table module can be quickly disassembled, the maintenance efficiency is improved, and the equipment downtime cycle is significantly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding equipment, in particular to a double-shooting platform modularized mixed-color injection molding machine and a disassembly method thereof. BACKGROUND

[0002] An injection molding machine is a device that heats plastic raw materials to a molten state and injects them into a mold under high pressure for molding. It is widely used in the production of plastic products. A mixed-color injection molding machine is a type of injection molding machine designed to produce plastic products with complex color or material properties by simultaneously injecting different colors or types of plastic materials. The shooting platform structure of the mixed-color injection molding machine is different from that of the traditional single shooting platform injection molding machine. It adopts a double-shooting platform or multi-shooting platform design to meet the needs of simultaneous injection of different colors or materials.

[0003] A double-color injection molding machine is a common mixed-color injection molding machine on the current market. It can inject two colors of materials at once to meet the production needs of mixed-color products. Traditional double-shooting platform injection molding machines usually adopt a fixed shooting platform design, mainly including an R-type double-shooting platform structure and a back-mounted double-shooting platform structure.

[0004] In the R-type double-shooting platform design, an angle is formed between the two shooting platforms, requiring high accuracy and stability in the docking of the shooting platforms. The overall layout of the shooting platforms is more complex, increasing the horizontal footprint of the equipment and making it difficult to adapt to compact production lines.

[0005] At the same time, when the shooting platform needs to be disassembled or key components need to be maintained, more components connected to the target maintenance components often need to be disassembled and adjusted complexly. The shooting platform with an oblique angle also requires additional angle adjustment during hoisting, making the disassembly and debugging process of the shooting platform very tedious and time-consuming.

[0006] In addition, such a shooting platform design requires stronger support and connection structures to ensure the stability and injection accuracy of the shooting platform, which inevitably leads to an increase in the weight of the equipment. Additional lifting equipment is needed to support the equipment during installation and disassembly, and the operation risk is higher, increasing the safety hazard.

[0007] The back-mounted double-shooting platform design directly mounts the secondary shooting platform on the top of the primary shooting platform. Although this design saves some horizontal space, it also has the following defects:

[0008] 1. Unstable center of gravity of the shooting platform

[0009] The weight of the auxiliary injection station is concentrated above the main injection station, causing the center of gravity to move upward, and more components are needed to ensure the stability of the injection station and the accuracy during the injection molding process. At the same time, the weight of the auxiliary injection station concentrated on the upper part of the main injection station also increases the burden of the main injection station.

[0010] 2. Difficulty in disassembly and safety hazards

[0011] When performing maintenance and replacing the injection cylinder and push rod, the operator needs to move the auxiliary injection station away. Since the auxiliary injection station is carried on the top of the main injection station, hoisting equipment must be used to disassemble and move the auxiliary injection station, and the operation process is relatively complex. Especially when local maintenance of the main injection station components at the bottom is required, the maintenance process is extremely laborious, greatly increasing the downtime of the equipment during production and maintenance costs.

[0012] 3. Complex maintenance and debugging

[0013] Since the auxiliary injection station is carried above the main injection station, the disassembly process is more complex and requires more steps and tools. After replacing the components, the equipment needs to be accurately debugged to ensure the accurate alignment of key parameters such as the injection axis and injection speed. This process not only takes a long time, but also requires higher level technical operations to ensure the stability and normal operation of the equipment after reassembly. Therefore, the maintenance work becomes more laborious and can easily affect the production efficiency and reliability of the equipment.

[0014] On the other hand, the traditional integrated structure of the double injection station structure has high coupling between the color mixing mechanism and the injection station, lacks flexible modular assembly, and therefore the cleaning and adjustment process is complicated and it is difficult to completely remove residual colorants or materials, resulting in unclear color mixing levels, speckling, color deviation, etc. In addition, due to the difficulty in adjusting the structure, the stirring effect is often uneven, causing uneven color mixing during production, which ultimately affects the molding quality of the product.

[0015] Therefore, there is an urgent need for a new double injection station design that can solve the above problems, especially in terms of disassembly convenience, weight management, and structural flexibility. SUMMARY

[0016] To solve the technical problems existing in the prior art, one of the purposes of the present application is to provide a double injection station modular assembly color mixing injection molding machine.

[0017] The second purpose of the present application is to provide a disassembly method for a double injection station modular assembly color mixing injection molding machine.

[0018] One of the purposes of the present application is achieved by the following technical solutions:

[0019] The application discloses a double-injection-mould modular assembly color-mixing injection molding machine, which comprises a first injection-mould module, a second injection-mould module, and an injection-gel module and an injection nozzle module connected to the front side of the first injection-mould module and the second injection-mould module; the first injection-mould module comprises a first injection-gel head plate, a first injection-gel second plate, and a first injection-gel guide rod arranged between the first injection-gel head plate and the first injection-gel second plate; the second injection-mould module comprises a second injection-gel head plate, a second injection-gel second plate, and a second injection-gel guide rod arranged between the second injection-gel head plate and the second injection-gel second plate.

[0020] The first injection-gel head plate and the first injection-gel second plate are respectively provided with outwardly extending support steps on the side close to the second injection-gel head plate and the second injection-gel second plate, and the second injection-gel head plate and the second injection-gel second plate are respectively provided with clamping steps matched with the support steps; the first injection-gel head plate and the first injection-gel second plate are respectively provided with adjusting assemblies for adjusting and locking the installation position and the levelness of the second injection-gel head plate and the second injection-gel second plate; the second injection-gel head plate and the second injection-gel second plate are respectively adjustably installed on one side of the first injection-gel head plate and the first injection-gel second plate through the adjusting assemblies, and form cuboid structure units after installation.

[0021] Further, the adjusting assembly comprises a threaded adjusting rod rotatably arranged on the support step, and an adjusting slide rod arranged between the first injection-gel head plate and the second injection-gel head plate and / or between the first injection-gel second plate and the second injection-gel second plate.

[0022] The threaded adjusting rod is arranged in the direction towards the clamping step, and rotation of the threaded adjusting rod can adjust the position or the angle change of the second injection-gel head plate or the second injection-gel second plate relative to the first injection-gel head plate or the first injection-gel second plate, so as to adjust the height or the levelness of the second injection-gel head plate or the second injection-gel second plate.

[0023] One end of the adjusting slide rod is provided with an adjusting hole extending along the length direction of the adjusting slide rod, and the second injection-gel head plate and the second injection-gel second plate are respectively provided with locking holes corresponding to the adjusting hole; a fastener is arranged in different positions of the adjusting hole and connected with the locking hole, so as to respectively adjust the relative position between the second injection-gel head plate and the first injection-gel head plate and between the second injection-gel second plate and the first injection-gel second plate.

[0024] The support steps on the first injection-gel head plate and / or the first injection-gel second plate are respectively provided with a plurality of adjusting screw holes matched with the threaded adjusting rod; the threaded adjusting rod can be selectively arranged in different adjusting screw holes according to different installation positions or sizes of the second injection-gel head plate and / or the second injection-gel second plate.

[0025] Further, the first and second side and / or top of the first and second injection head plates are provided with a plurality of adjusting slide rods in horizontal and vertical directions, respectively; one end of the adjusting slide rods is provided with an adjusting hole; the second injection head plate and / or the second injection plate can be displaced along the adjusting hole of the adjusting slide rod.

[0026] Further, the first and second injection head plates are provided with two first and second injection guide rods along the diagonal line, respectively; the distance between the upper first and second injection guide rods is smaller than that between the lower first and second injection guide rods.

[0027] The first and second guide plates are slidably arranged on the first and second injection guide rods, respectively; the upper ends of the first and second guide plates are arranged close to each other; the first and second injection plates are provided with first and second injection oil cylinders, respectively; the first and second injection oil cylinders are connected to the center of the first and second guide plates through first and second injection piston rods, respectively; the first and second guide plates are driven by the first and second injection oil cylinders to reciprocate along the first and second injection guide rods, respectively.

[0028] Further, the injection module comprises a first glue melting cylinder connected to the first injection head plate, a first injection push rod arranged in the first glue melting cylinder, a second glue melting cylinder connected to the second injection head plate, and a second injection push rod arranged in the second glue melting cylinder; the first and second injection push rods are used to push the molten plastic in the first and second glue melting cylinders to the nozzle module; the first and second injection push rods are coaxially arranged on both sides of the first and second guide plates, respectively.

[0029] The nozzle module comprises a first and second converging seat and a nozzle connected to the first and second converging seat; the first and second converging seat are provided with a first and second flow channel, respectively; the first and second flow channels extend to the inside of the nozzle, respectively; the molten plastic passes through the first and second flow channels, respectively, and is injected into the mold through the nozzle.

[0030] Further illustrate that the center of the first guide plate and the second guide plate is respectively provided with a first mounting hole and a second mounting hole, one end of the first glue injection push rod and the second glue injection push rod away from the nozzle module is respectively located in the first mounting hole and the second mounting hole and locked; the upper and lower ends of the first guide plate and the second guide plate are respectively provided with a first guide hole and a second guide hole matched with the first glue injection guide rod and the second glue injection guide rod, and the center of each group of the first guide hole and the second guide hole and the center of the corresponding first mounting hole and the second mounting hole are located on the same straight line; and the straight line where the centers of the two first guide holes and the first mounting hole on the first guide plate are located and the corresponding center straight line on the second guide plate form an isosceles triangle arrangement.

[0031] Further illustrate that the color mixing injection molding machine further comprises a front supporting seat, a rear supporting seat and a shooting moving guide rod connecting the front supporting seat and the rear supporting seat; the top of the front supporting seat and the rear supporting seat is respectively provided with a V-shaped opening, one side of the V-shaped opening corresponds to the supporting step; two shooting moving guide rods are respectively slid through the first glue injection head plate and the first glue injection two plate bottom, and are respectively connected to the V-shaped opening on both sides of the front supporting seat and the rear supporting seat; the straight line where the first glue injection piston rod axis is located coincides with the projection of the central axis of the V-shaped opening.

[0032] The second purpose of the application is achieved by the following technical scheme:

[0033] A disassembly method of a color mixing injection molding machine applied to the modular assembly of the above-mentioned double shooting table module, the assembly of the color mixing injection molding machine comprises the following steps:

[0034] Step 1: assembly of the first shooting table module;

[0035] First, fix the front supporting seat and the rear supporting seat on the injection molding machine frame, ensure that the axis is aligned and kept horizontal; then pass two shooting moving guide rods through the first glue injection head plate and the first glue injection two plate bottom, integrally hoist them to the front supporting seat and the rear supporting seat through hoisting equipment, complete the connection of the two shooting moving guide rods with the front supporting seat and the rear supporting seat; then install the two first glue injection guide rods and the first guide plate between the first glue injection head plate and the first glue injection two plate in sequence, then install the first glue injection oil cylinder to the rear of the first glue injection two plate, and complete the connection of the first glue injection piston rod with the center of the first guide plate;

[0036] Step 2: assembly of the second shooting table module;

[0037] First, the second glue injection head plate is hoisted to one side of the first glue injection head plate, the engagement ladder of the second glue injection head plate is connected with the support ladder of the first glue injection head plate, the position of the second glue injection head plate is adjusted through the adjusting slide rod and / or the threaded adjusting rod, and the second glue injection head plate is locked; then, two second glue injection guide rods and a second guide plate are installed between the second glue injection head plate and the second glue injection two-plate, a second glue injection cylinder is installed behind the second glue injection two-plate, and the second glue injection piston rod is connected with the center of the second guide plate;

[0038] Alternatively, the second injection station module is pre-assembled, hoisted to the first injection station module as a whole through hoisting equipment, and the position of the second glue injection head plate is adjusted through the adjusting slide rod and / or the threaded adjusting rod and locked.

[0039] Step 3: Assembly of the glue injection module and the nozzle module.

[0040] The first glue melting cylinder and the second glue melting cylinder are respectively fixedly installed on the first glue injection head plate and the second glue injection head plate, the first glue injection push rod and the second glue injection push rod are respectively inserted into the first glue melting cylinder and the second glue melting cylinder and connected with the corresponding first guide plate and second guide plate, then the first bus bar and the second bus bar are respectively installed in front of the first glue melting cylinder and the second glue melting cylinder, and finally the nozzle module is installed at the front end of the bus bar to complete the assembly.

[0041] The second purpose of the present application is achieved by the following technical scheme:

[0042] A disassembly and assembly method of a color mixing injection molding machine applied to the above-mentioned double-injection station modular assembly, the disassembly and maintenance method of the second injection station module comprising the following steps:

[0043] Step 1: sequentially release the connection of the nozzle module, the first bus bar and the second bus bar;

[0044] Step 2: loosen the adjusting slide rod and the threaded adjusting rod between the first glue injection head plate and the second glue injection head plate, and between the first glue injection two-plate and the second glue injection two-plate, so that the second injection station module is in a separable state;

[0045] Step 3: the second injection station module is hoisted to the workbench as a whole through hoisting equipment, the connection between the second glue injection push rod and the second glue melting cylinder is removed, and the second glue injection push rod and the second glue melting cylinder are taken out from the front side;

[0046] Step 4: after maintenance, the second glue injection push rod and the second glue melting cylinder are reassembled, hoisted back to the first injection station module as a whole, and connected, adjusted and locked.

[0047] In addition, the disassembly and maintenance method of the glue injection module comprises the following steps:

[0048] Step 1: sequentially release the connection of the nozzle module, the first bus bar and the second bus bar;

[0049] Step 2: While the first injection station module remains installed, separately disassemble the first glue melting cylinder and the first glue injection push rod for maintenance; or disassemble the second glue melting cylinder and the second glue injection push rod according to requirements to adapt to different color materials or thoroughly clean them;

[0050] Step 3: After completing the maintenance, reinstall the first glue melting cylinder and the first glue injection push rod and / or the second glue melting cylinder and the second glue injection push rod.

[0051] Compared with the prior art, the present application has at least the following beneficial effects:

[0052] 1. The injection station structure of the present application adopts a modular design. The second injection station module can not only be pre-installed as a whole and quickly installed by hoisting, but also can be assembled in sequence according to parts on site, improving the flexibility and adaptability of assembly. Quick docking is achieved through the cooperation of the supporting ladder and the engagement ladder structure, and position fine adjustment and locking are achieved in combination with the threaded adjusting rod, adjusting slide rod, etc. When maintenance is required, only the adjusting components such as the adjusting slide rod and the threaded adjusting rod need to be removed, without the need to disassemble the main structure in a large range, so that the second injection station module can be hoisted and removed as a whole, greatly simplifying the operation process.

[0053] In addition, the first injection station module itself also reduces internal part interlocking and restrictions through a modular structure, so that key components such as the glue injection guide rod, the glue injection push rod, and the glue injection oil cylinder can be easily replaced individually in case of failure. When the first injection station module needs to be repaired due to failure, the second injection station module can also be hoisted away as a whole, leaving enough space for visual operation, maintenance, and replacement of the first injection station. This greatly reduces the difficulty of assembling integrated components of the injection molding machine in the air and in a narrow space, greatly reducing the operation burden of maintenance personnel. The structure design of the present application shortens the maintenance time from about 2 hours to 40 minutes, improves the maintenance efficiency by more than 60%, and significantly reduces the equipment downtime.

[0054] 2. Compared with the problems of large occupied space, large weight, difficult disassembly, unstable center of gravity, etc. caused by the layout of traditional "R-type" or "piggyback type" color mixing injection molding machines, the second injection station module of the present application is fixed by longitudinal support and modular connection close to the side edge of the first injection station module in structure, and the overall structure is more compact. Further, the height of the second injection station module is not higher than that of the first injection station module, which maximally compresses the vertical space, and at the same time, the overall horizontal width is also greatly reduced. Compared with the traditional double injection station injection molding machine, the double injection station structure of the present application can reduce the occupied space by about 30%, and at the same time, optimizes the overall weight management, greatly adapts to the use scene of narrow production line or dense arrangement of multiple injection molding machines, and improves the flexibility of equipment arrangement.

[0055] 3. The layout of the double injection station structure is optimized, the first injection guide rod and the second injection guide rod are arranged in a diagonal position, and the upper ends of the first guide plate and the second guide plate are close to each other; further, the first guide plate and the second guide plate are respectively provided with two guide holes and one mounting hole, the centers of the three holes are kept on the same straight line, and the guide hole of each guide plate and the mounting hole of the push rod form an isosceles triangle arrangement structure. The layout can realize force balance of the guide rod and consistent positioning of the push rod center, while ensuring the bottom support force, the overall gravity is more stable, and the components are less.

[0056] On the other hand, the structure uses unified front and rear supporting seats and injection guide rods to support the first injection station and the second injection station, all axis settings are arranged around the common V-shaped positioning seat, the weight of the whole machine is reasonably distributed, the installation or operation risk caused by one-sided overweight is avoided, the precise adjustment structure is matched to ensure that the operation trajectories of the two sets of injection stations always remain coaxial, thereby ensuring the precise cooperation of the main and auxiliary materials in space and time during the color mixing injection molding process, and improving the color mixing consistency and product quality.

[0057] Furthermore, the structure uses unified front and rear supporting seats and injection guide rods to support the first injection station and the second injection station, instead of the traditional "double station double rail" structure, which not only saves the material and space cost of a set of guide rails and support system, but also improves the injection synchronization of the first and second injection stations, facilitates unified debugging and control, and greatly reduces the manufacturing cost and later maintenance cost.

[0058] 4. The adjustment assembly is designed ingeniously, through the cooperation of the adjustment slide rod and the threaded adjustment rod, the position fine adjustment and the levelness quick correction of the second injection station module during the installation process are realized, the precise docking and operation coaxiality between the components are ensured, meanwhile, a plurality of threaded hole positions are preset on the supporting ladder, which provides redundant installation positions for the adjustment assembly, the assembly of the glue melting cylinder and the injection oil cylinder of different specifications can be realized without changing the main structure, the quick replacement and stable connection of multiple types of components can be realized, the adaptability and universality of the equipment to different production demands are greatly enhanced, the assembly is more flexible, and the practicality is stronger.

[0059] 5. The disassembly, assembly and maintenance method of the injection molding machine is simple and flexible, and greatly improves the disassembly and assembly efficiency: through the guiding docking of the supporting ladder and the clamping ladder, and cooperating with the adjustment slide rod and the threaded adjustment rod, the quick alignment and locking between the second injection station module and the first injection station module are realized, the dependence on professional tools and experience is reduced.

[0060] Meanwhile, the present application has high flexibility in disassembly and maintenance, the second injection station module can be integrally preassembled and then hoisted and fixed, or can be assembled on site in sequence of components, so as to meet different site conditions, assembly process and maintenance strategies, and significantly improve structural adaptability. During the maintenance process, the injection module can also be individually disassembled as required to remove any injection push rod and glue melting cylinder, so as to facilitate color replacement or cleaning treatment, thereby more thoroughly removing internal residual colorants, and avoiding problems such as unclear color mixing level, mottling or color deviation caused by residual.

[0061] 6. The modular design of the present application not only has significant advantages in assembly, adjustment, maintenance and the like, but also adopts standardized connection structure and general size specification for each module, so as to facilitate batch processing, unified quality control and modular inventory management in the production link, significantly improve manufacturing efficiency, and reduce manufacturing and maintenance costs. In the later stage of upgrading or customized development, only partial module adjustment or replacement is required, so that function expansion can be quickly realized to avoid repeated development and investment. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 Fig. 1 is a schematic diagram of the overall structure of a color mixing injection molding machine with a double injection station modular assembly according to the present application;

[0063] Figure 2 Fig. 2 is a schematic diagram of the overall structure of a color mixing injection molding machine with a double injection station modular assembly according to the present application;

[0064] Figure 3 Fig. 3 is a schematic diagram of the side view of a color mixing injection molding machine with a double injection station modular assembly according to the present application;

[0065] Figure 4 Fig. 4 is a schematic diagram of the A-A direction cross-sectional structure of a color mixing injection molding machine with a double injection station modular assembly according to the present application; Figure 3

[0066] Figure 5 Fig. 5 is a schematic diagram of the vertical cross-section of the first injection station structure of a color mixing injection molding machine with a double injection station modular assembly according to the present application;

[0067] Figure 6 Fig. 6 is a schematic diagram of the horizontal cross-section of the overall structure of a color mixing injection molding machine with a double injection station modular assembly according to the present application;

[0068] Figure 7 Fig. 7 is a schematic diagram of the assembly state of the first injection head plate and the second injection head plate of a color mixing injection molding machine with a double injection station modular assembly according to the present application.

[0069] In the drawings:

[0070] ​1. First injection stage module; 11. First injection head plate; 12. First injection second plate; 13. First injection guide rod; 14. Support step; 141. Adjusting screw hole; 15. First guide plate; 151. First mounting hole; 152. First guide hole; 16. First injection cylinder; 161. First injection piston rod; 2. Second injection stage module; 21. Second injection head plate; 22. Second injection second plate; 23. Second injection guide rod; 24. Engaging step; 25. Second guide plate; 251. Second mounting hole; 252. Second... 26. Guide hole; 27. Locking hole; 28. Second injection cylinder; 29. ​​Second injection piston rod; 30. Injection module; 31. First melting cylinder; 32. First injection push rod; 33. Second melting cylinder; 34. Second injection push rod; 4. Nozzle module; 41. First manifold; 411. First flow channel; 42. Second manifold; 421. Second flow channel; 43. Nozzle; 5. Adjustment assembly; 51. Threaded adjustment rod; 52. Adjustment slide rod; 521. Adjustment hole; 6. Front support seat; 7. Rear support seat; 8. Injection guide rod. Detailed Implementation

[0071] To facilitate understanding of the present invention, the technical solutions and advantages of the invention will be further described in detail below with reference to the accompanying drawings and embodiments. The specific structures and features of the present invention are illustrated by way of example and should not be construed as limiting the invention in any way. Furthermore, any of the technical features mentioned below (including implicit or disclosed features), as well as any technical features directly shown or implied in the figures, can be arbitrarily combined or deleted among these technical features to form other embodiments that may not be directly or indirectly mentioned in the present invention. The accompanying drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention.

[0072] Example 1

[0073] like Figures 1-7 As shown, this embodiment 1 provides a color mixing injection molding machine with a modular assembly of dual injection stages, including a first injection stage module 1, a second injection stage module 2, and an injection module 3 and an injection nozzle module 4 connected to the front of the first injection stage module 1 and the second injection stage module 2; the first injection stage module 1 includes a first injection head plate 11, a first injection second plate 12, and a first injection guide rod 13 disposed between the first injection head plate 11 and the first injection second plate 12; the second injection stage module 2 includes a second injection head plate 21, a second injection second plate 22, and a second injection guide rod 23 disposed between the second injection head plate 21 and the second injection second plate 22;

[0074] The first glue injection head plate 11 and the first glue injection two-plate 12 are provided with outwardly extending support steps 14 on one side close to the second glue injection head plate 21 and the second glue injection two-plate 22, and the second glue injection head plate 21 and the second glue injection two-plate 22 are provided with clamping steps 24 that are fitted with the support steps 14; the first glue injection head plate 11 and the first glue injection two-plate 12 are respectively provided with adjusting assemblies 5 for adjusting and locking the installation position and levelness of the second glue injection head plate 21 and the second glue injection two-plate 22; the second glue injection head plate 21 and the second glue injection two-plate 22 are adjustably installed on one side of the first glue injection head plate 11 and the first glue injection two-plate 12 through the adjusting assemblies 5, and form rectangular structure units after installation. In this embodiment, the rectangular structure has good geometric stability, can more effectively resist external impact and vibration than irregular shapes, improves the stability of the mechanism during glue injection, reduces the risk of deformation, helps to maintain the glue injection precision and consistency, and can reduce the shielding of other components, which is beneficial to the operable space for maintenance and repair of the injection bench components, and visual maintenance without the need to remove too many components.

[0075] Compared with the problems of large floor space, difficult disassembly and reassembly, unstable center of gravity and the like caused by the traditional "R-type" or "piggyback" layout, in this embodiment, the second injection bench module is fixed by longitudinal support and modular connection close to the side edge of the first injection bench module, and the overall structure is more compact; further, the height of the second injection bench module is not higher than that of the first injection bench module, which maximally compresses the vertical space, and the overall horizontal width is also greatly reduced, compared with the traditional double-injection-bench injection molding machine, the double-injection-bench structure of the present application can reduce the floor space by about 30%, which greatly adapts to the use scenarios of narrow production lines or dense arrangement of multiple injection molding machines, and improves the flexibility of equipment arrangement.

[0076] In this embodiment, the adjusting assembly 5 is used to adjust the installation position and levelness of the second glue injection head plate 21 and the second glue injection two-plate 22, which means that in the installed state of the first injection bench module, the adjusting assembly can adjust the second glue injection head plate 21 and the second glue injection two-plate 22 to move away from or close to the first glue injection head plate and the first glue injection two-plate in the horizontal direction; or the local lifting of the second glue injection head plate and the second glue injection two-plate can be finely adjusted, especially when there is a slight tilt between the injection bench modules, a size error of the casting, an uneven installation surface and the like, the adjusting assembly 5 can function like a jack to locally lift or lower the horizontal height of the secondary injection bench module.

[0077] Specifically, the adjusting assembly 5 includes a threaded adjusting rod 51 rotatably arranged on the support step 14, and an adjusting slide rod 52 arranged between the first glue injection head plate 11, the second glue injection head plate 21 and / or the first glue injection two-plate 12, the second glue injection two-plate 22;

[0078] The threaded adjusting rod 51 is arranged in a direction towards the clamping step 24, and rotating the threaded adjusting rod 51 can drive the threaded adjusting rod 51 to slide along the supporting step 14, thereby causing the second glue injection head plate 21 or the second glue injection two-plate 22 connected thereto to displace relative to the first glue injection head plate 11 or the first glue injection two-plate 12; adjusting the position or angle of the second glue injection head plate or the second glue injection two-plate connected thereto relative to the first glue injection head plate or the first glue injection two-plate to adjust the height or levelness of the second glue injection head plate or the second glue injection two-plate; and achieving micro-movement of the second glue injection module by rotating the adjusting rod, conforming to the installation direction of the secondary glue injection platform, making the adjusting direction consistent with the module docking direction, more in line with the actual adjusting path, avoiding errors caused by complex or nonlinear adjusting angles, and improving the adjusting intuitiveness and operation convenience.

[0079] One end of the adjusting slide rod 52 is provided with an adjusting hole 521 extending in the length direction thereof, and the second glue injection head plate and the second glue injection two-plate are respectively provided with locking holes 26 corresponding to the adjusting hole 521; a fastener is arranged at different positions of the adjusting hole 521 and connected with the locking hole 26, thereby respectively adjusting the relative positions between the second glue injection head plate and the first glue injection head plate and between the second glue injection two-plate and the first glue injection two-plate; in this embodiment, the adjusting hole of the adjusting slide rod allows sliding connection, increases the adjusting allowance, adapts to the processing errors or installation deviations of different secondary glue injection platform modules, reduces the assembly time and the number of rework, and can also reduce the high requirement for the precision of the slide rod and reduce the cost.

[0080] The supporting step 14 on the first glue injection head plate 11 and / or the first glue injection two-plate 12 is provided with a plurality of adjusting screw holes 141 corresponding to the threaded adjusting rod 51 at intervals; the threaded adjusting rod 51 can be selectively arranged in different adjusting screw holes 141 according to different installation positions or sizes of the second glue injection head plate 21 and / or the second glue injection two-plate 22. In this embodiment, a plurality of groups of threaded holes are pre-set on the supporting step to provide redundant installation positions for the adjusting assembly, which can realize the assembly of glue injection barrels and glue injection oil cylinders of different specifications without changing the main body structure, thereby realizing the quick replacement and stable connection of multiple models of components, greatly enhancing the adaptability and versatility of the equipment to different production demands, and making the assembly more flexible and practical.

[0081] Optionally, the first injection head plate 11 and the second injection head plate 21 are respectively provided with a plurality of adjusting slide rods 52 in the horizontal direction and the vertical direction; the adjusting slide rod 52 is provided with an adjusting hole 521 at one end of the second injection head plate 21 and / or the second injection two-plate 22; the second injection head plate 21 and / or the second injection two-plate 22 can be displaced along the adjusting hole 521 of the adjusting slide rod 52. In the embodiment, the adjusting slide rod 52 can be arranged in the horizontal direction and / or the vertical direction, the horizontal adjustment solves the left and right position error, the vertical adjustment solves the unevenness or posture deviation, so that the spatial position of the second injection platform module is more easily accurately positioned, and the installation adaptability is greatly improved.

[0082] In the embodiment, through the cooperation of the adjusting slide rod and the threaded adjusting rod, not only the position fine adjustment and the horizontal degree quick correction of the second injection platform module in the installation process are realized, but also the accurate docking and the running coaxiality between the components are ensured.

[0083] The improved injection platform structure of the application adopts the module design, so that the second injection platform module can be pre-installed as a whole and quickly installed by hoisting, and can also be assembled in sequence according to the components on the site, so that the flexibility and adaptability of assembly are improved; the quick docking is realized through the cooperation of the supporting ladder and the clamping ladder, and the position fine adjustment and locking are realized through the threaded adjusting rod, the adjusting slide rod and the like; when maintenance is needed, only the adjusting components such as the adjusting slide rod and the threaded adjusting rod need to be removed, without the need of disassembling the main structure in a large range, so that the whole second injection platform module can be hoisted and removed, and the operation process is greatly simplified.

[0084] Optionally, two first injection guide rods 13 are arranged between the first injection head plate 11 and the first injection two-plate 12 along the diagonal line; two second injection guide rods 23 are arranged between the second injection head plate 21 and the second injection two-plate 22 along the diagonal line; the distance between the upper first injection guide rod 13 and the second injection guide rod 23 is smaller than the distance between the lower first injection guide rod 13 and the second injection guide rod 23.

[0085] Two first glue injection guide rods 13 are provided with first guide plates 15, and two second glue injection guide rods 23 are provided with second guide plates 25 corresponding to the first guide plates 15. The upper ends of the first guide plates 15 and the second guide plates 25 are relatively close to each other. First glue injection oil cylinders 16 and second glue injection oil cylinders 27 are respectively arranged on the first glue injection two-plate 12 and the second glue injection two-plate 22. The first glue injection oil cylinders 16 and the second glue injection oil cylinders 27 are respectively connected to the centers of the first guide plates 15 and the second guide plates 25 through first glue injection piston rods 161 and second glue injection piston rods 271. The first guide plates 15 and the second guide plates 25 are driven by the corresponding first glue injection oil cylinders 16 and the second glue injection oil cylinders 27 to reciprocate along the first glue injection guide rods 13 and the second glue injection guide rods 23.

[0086] In the embodiment, the glue injection guide rods and the guide plates of the double injection station form a triangular structure with a narrow upper part and a wide lower part, which can effectively suppress the swing of the guide plates during high-speed reciprocating movement, improve the guiding accuracy and the stability of the load bearing. Compared with the traditional four-guide-rod method, the number of glue injection guide rods of the traditional injection molding machine is reduced, the structure is more compact, the weight is lighter, and the triangular positioning is more stable in mechanics. The diagonal arrangement facilitates the quick insertion or hoisting of each component from the side, and is suitable for modular maintenance operation.

[0087] In addition, the arrangement of the close upper ends of the first guide plates and the second guide plates can reduce the swing range of the top of the guide plates, improve the top end accuracy control, and the piston rods directly act on the center of the guide plates, avoiding eccentric force and improving the response speed and the repeatability.

[0088] Optionally, the glue injection module 3 includes a first glue melting cylinder 31 connected with the first glue injection head plate 11, a first glue injection push rod 32 arranged in the first glue melting cylinder 31, a second glue melting cylinder 33 connected with the second glue injection head plate 21, and a second glue injection push rod 34 arranged in the second glue melting cylinder 33. The first glue injection push rod 32 and the second glue injection push rod 34 respectively penetrate the first glue injection head plate 11 and the second glue injection head plate 21, and are coaxially arranged on both sides of the first guide plate 15 and the second guide plate 25.

[0089] The nozzle module 4 includes a first flow seat 41, a second flow seat 42, and a nozzle 43 in communication with the first flow seat 41 and the second flow seat 42. The first flow seat 41 and the second flow seat 42 are respectively provided with a first flow channel 411 and a second flow channel 421 in communication with the first glue melting cylinder 31 and the second glue melting cylinder 33. The first flow channel 411 and the second flow channel 421 respectively extend to the inside of the nozzle 43, and the molten plastic is injected into the mold through the nozzle 43 from the end of the nozzle 43.

[0090] The design of the glue injection module and the nozzle module is that the nozzle and the two busbars are independent components, which facilitates quick replacement or maintenance. During the maintenance process, the glue injection module also supports the separate disassembly of any glue injection push rod and glue melting cylinder as needed, which facilitates color replacement or cleaning treatment, thereby more thoroughly removing internal residual colorants and avoiding problems such as unclear color mixing levels, mottling, or color deviation caused by residues.

[0091] Optionally, the center of the first guide plate 15 and the second guide plate 25 is respectively provided with a first mounting hole 151 and a second mounting hole 251, and the first glue injection push rod 32 and the second glue injection push rod 34 are respectively located in the first mounting hole 151 and the second mounting hole 251 and locked at the end away from the nozzle module 4; the two ends of the first guide plate 15 and the second guide plate 25 are respectively provided with a first guide hole 152 and a second guide hole 252 matched with the first glue injection guide rod 13 and the second glue injection guide rod 23, and the center of each group of the first guide hole 152 and the second guide hole 252 and the center of the corresponding first mounting hole 151 and the second mounting hole 251 are located on the same straight line; and the straight line where the centers of the two first guide holes 152 and the first mounting hole 151 on the first guide plate 15 are located and the corresponding center straight line on the second guide plate 25 form an isosceles triangle arrangement.

[0092] In the embodiment, the glue injection head plate and the glue injection two-plate form a rigid cuboid structure through diagonal guide rods and connecting pieces, and the respective faces are perpendicular to each other and tightly connected, forming a stable three-dimensional space frame. The relative displacement and angular deviation between the glue injection head plate and the glue injection two-plate are limited, ensuring the parallelism and coaxiality of the two key components and ensuring the smooth movement of the glue injection push rod guided by the glue injection guide rod along the predetermined trajectory. At the same time, it also provides a visual operation space for adjusting the screw rod, slide rod and other adjusting components.

[0093] The layout of the double glue injection table structure is optimized, the first glue injection guide rod and the second glue injection guide rod are arranged at diagonal positions, and the upper ends of the first guide plate and the second guide plate are close to each other; further, the first guide plate and the second guide plate are respectively provided with two guide holes and one mounting hole, the centers of the three holes are kept on the same straight line, and the guide holes of each guide plate and the push rod mounting hole constitute an isosceles triangle arrangement structure. The layout can achieve force balance of the guide rod and consistent positioning of the push rod center in mechanics, while ensuring the bottom support force, the overall center of gravity is more stable, and the components are fewer.

[0094] Optionally, the color mixing injection molding machine further comprises a front support seat 6, a rear support seat 7, and a shooting guide rod 8 connecting the front support seat 6 and the rear support seat 7; the top of the front support seat 6 and the top of the rear support seat 7 are respectively provided with a V-shaped opening, one side of the V-shaped opening corresponds to the support step 14; two shooting guide rods 8 respectively slide through the bottom of the first shooting head plate 11 and the first shooting two-plate 12, and are respectively connected to the V-shaped openings on both sides of the front support seat 6 and the rear support seat 7; the straight line where the axis of the first shooting piston rod 161 is located coincides with the projection of the central axis of the V-shaped opening.

[0095] In addition, in the present embodiment, one of the shooting guide rods is arranged below the support step, which can effectively share the stress of the support step and improve the rigidity and stability of the overall structure.

[0096] In the present embodiment, the first shooting table and the second shooting table are supported by unified front and rear support seats and shooting guide rods, all axis settings are arranged around the common V-shaped positioning seat, the weight of the whole machine is reasonably distributed, the risk of installation or operation caused by one-sided overweight is avoided, the accurate adjustment structure is matched to ensure that the running tracks of the two sets of shooting tables always remain coaxial, thereby ensuring the accurate cooperation of the main and auxiliary materials in space and time during the color mixing injection molding process, and improving the color mixing consistency and product quality.

[0097] Furthermore, the structure adopts unified front and rear support seats and shooting guide rods to support the first shooting table and the second shooting table, instead of the traditional "double-table double-track" structure, which not only saves the material and space cost of a set of guide rails and support system, but also improves the shooting synchronization of the main and auxiliary shooting tables, facilitates unified debugging and control, and greatly reduces the manufacturing cost and later maintenance cost.

[0098] In the present embodiment, a conventional heating component such as an electric heating ring or an electric heating sheet is arranged around the glue melting cylinder to provide continuous and stable heating function during the injection molding production process. After the plastic particles are input through the feeding port, the shooting push rod is driven forward by the guide plate, and the pushing material gradually moves forward. As the material moves forward in the glue melting cylinder, it is gradually melted by the external electric heating ring to form molten plastic. After the glue melting process is completed, the first shooting oil cylinder and the second shooting oil cylinder arranged at the rear end start to work, driving the first shooting piston rod and the second shooting piston rod to push forward, thereby driving the guide plate and the shooting push rod thereon to move forward in a straight line at the same time, and finally injecting the molten plastic into the mold cavity through the shooting nozzle module to complete one color mixing injection action.

[0099] It should be noted that the present embodiment also includes other components or systems that meet the injection molding function of the double-cylinder injection molding machine, such as a rack, a mold locking unit, an ejection unit, an oil pressure control system, etc. The present application does not involve improvements to these parts, and therefore they will not be described in detail.

[0100] Example 2

[0101] The embodiment 2 provides a disassembly and maintenance method of a mixed-color injection molding machine applied to the modular assembly of the double injection table module in the embodiment 1, and the assembly of the mixed-color injection molding machine comprises the following steps:

[0102] Step 1: assembly of the first injection table module;

[0103] First, the front support seat and the rear support seat are fixed on the injection molding machine frame, the axes are aligned and kept horizontal, then the two injection moving guide rods are respectively inserted through the first injection head plate and the bottom of the first injection two-plate, and the two injection moving guide rods are integrally hoisted to the front support seat and the rear support seat through hoisting equipment, the connection of the two injection moving guide rods and the front support seat and the rear support seat is completed, then the two first injection guide rods and the first guide plate are sequentially installed between the first injection head plate and the first injection two-plate, the first injection oil cylinder is installed behind the first injection two-plate, and the connection of the first injection piston rod and the center of the first guide plate is completed;

[0104] Step 2: assembly of the second injection table module;

[0105] First, the second injection head plate is hoisted to the side of the first injection head plate, the clamping ladder of the second injection head plate is connected with the support ladder of the first injection head plate, the position of the second injection head plate is adjusted through the adjusting slide rod and / or the threaded adjusting rod, and the second injection head plate is locked; then the two second injection guide rods and the second guide plate are sequentially installed between the second injection head plate and the second injection two-plate, the second injection oil cylinder is installed behind the second injection two-plate, and the connection of the second injection piston rod and the center of the second guide plate is completed;

[0106] Alternatively, the second injection table module is preassembled, integrally hoisted to the first injection table module through hoisting equipment, and the position of the second injection head plate is adjusted through the adjusting slide rod and / or the threaded adjusting rod and locked.

[0107] Step 3: assembly of the injection module and the nozzle module;

[0108] The first melt glue cylinder and the second melt glue cylinder are respectively fixed and installed on the first injection head plate and the second injection head plate, the first injection push rod and the second injection push rod are respectively inserted into the first melt glue cylinder and the second melt glue cylinder and connected with the corresponding first guide plate and second guide plate, then the first bus bar and the second bus bar are respectively installed in front of the first melt glue cylinder and the second melt glue cylinder, and the nozzle module is installed at the front end of the bus bar, and the assembly is completed.

[0109] Embodiment 3

[0110] The embodiment 3 provides a disassembly and maintenance method of a mixed-color injection molding machine applied to the modular assembly of the double injection table module, and the disassembly and maintenance method of the second injection table module comprises the following steps:

[0111] Step 1: sequentially release the connection of the nozzle module, the first bus bar, and the second bus bar;

[0112] Step 2: loosen the adjusting slide rod and the threaded adjusting rod between the first glue injection head plate and the second glue injection head plate, and the first glue injection two-plate and the second glue injection two-plate, so that the second injection station module is in a separable state;

[0113] Step 3: use hoisting equipment to hoist the second injection station module to the workbench as a whole, remove the connection of the second glue injection push rod and the second glue melting cylinder, and take it out from the front side;

[0114] Step 4: after maintenance, reassemble the second glue injection push rod and the second glue melting cylinder, and hoist them back to the first injection station module for docking, adjustment, and locking.

[0115] In addition, the disassembly and maintenance method of the glue injection module comprises the following steps:

[0116] Step 1: sequentially release the connection of the nozzle module, the first bus bar, and the second bus bar;

[0117] Step 2: under the premise that the first injection station module remains in the installed state, separately disassemble the first glue melting cylinder and the first glue injection push rod for maintenance; or disassemble the second glue melting cylinder and the second glue injection push rod according to the requirements, adapt to different color materials, or thoroughly clean them;

[0118] Step 3: after maintenance, reassemble the first glue melting cylinder and the first glue injection push rod and / or the second glue melting cylinder and the second glue injection push rod.

[0119] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. For those skilled in the art, it can be understood that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A color mixing injection molding machine with a modular assembly of dual injection stages, characterized in that, The system includes a first injection stage module, a second injection stage module, and an injection module and a nozzle module connected to the front of the first injection stage module and the second injection stage module. The first injection stage module includes a first injection head plate, a first injection second plate, and a first injection guide rod disposed between the first injection head plate and the first injection second plate. The second injection stage module includes a second injection head plate, a second injection second plate, and a second injection guide rod disposed between the second injection head plate and the second injection second plate. The first injection head plate and the first injection second plate are respectively provided with outwardly extending support steps on the side near the second injection head plate and the second injection second plate. The second injection head plate and the second injection second plate are provided with engaging steps that are engaged with the support steps. The first injection head plate and the first injection second plate are respectively provided with adjustment components for adjusting and locking the installation position and level of the second injection head plate and the second injection second plate. The second injection head plate and the second injection second plate are respectively adjustablely installed on one side of the first injection head plate and the first injection second plate through the adjustment components, and respectively form a cuboid structural unit after installation. The adjustment assembly includes a threaded adjustment rod rotatably mounted on the support step, and an adjustment slide rod disposed between the first injection head plate and the second injection head plate and / or between the first injection second plate and the second injection second plate; The threaded adjusting rod is arranged in the direction of the engaging step. Rotating the threaded adjusting rod can adjust the position or angle of the second injection head plate or the second injection plate connected to it relative to the first injection head plate or the first injection plate, so as to adjust the height or level of the second injection head plate or the second injection plate. One end of the adjusting slide rod is provided with an adjusting hole extending along its length, and the second injection head plate and the second injection plate are respectively provided with locking holes corresponding to the adjusting hole; by fasteners passing through different positions of the adjusting hole and connecting with the locking hole, the relative positions between the second injection head plate and the first injection head plate, and between the second injection plate and the first injection plate are respectively adjusted; The first injection head plate and / or the first injection second plate have a plurality of adjusting screw holes at intervals on the supporting steps that are adapted to the threaded adjusting rod; the threaded adjusting rod can be selectively installed in different adjusting screw holes according to the different installation positions or sizes of the second injection head plate and / or the second injection second plate.

2. The color mixing injection molding machine with modular assembly of dual injection stages as described in claim 1, characterized in that, The first injection head plate and the second injection head plate are provided with a plurality of adjusting slide rods along the horizontal and vertical directions on their sides and / or tops, respectively; the adjusting slide rods are provided with adjusting holes at one end near the second injection head plate and / or the second injection plate; the second injection head plate and / or the second injection plate can be displaced along the extension direction of the adjusting hole of the adjusting slide rod, and are connected to the locking hole at different positions of the adjusting hole by fasteners, thereby adjusting the relative positions between the second injection head plate and the first injection head plate, and between the second injection plate and the first injection plate.

3. The color mixing injection molding machine with modular assembly of dual injection stages as described in claim 1 or 2, characterized in that, The first injection head plate and the first injection second plate each have two first injection guide rods spaced apart along their diagonals; the second injection head plate and the second injection second plate each have two second injection guide rods spaced apart along their diagonals; the horizontal distance between the upper first injection guide rod and the second injection guide rod is less than the horizontal distance between the lower first injection guide rod and the second injection guide rod. Two first injection guide rods are slidably fitted with first guide plates, and two second injection guide rods are slidably fitted with second guide plates corresponding to the first guide plates. The upper ends of the first and second guide plates are arranged close to each other. The first and second injection plates are respectively equipped with a first injection cylinder and a second injection cylinder. The first and second injection cylinders are respectively connected to the center of the first and second guide plates through a first injection piston rod and a second injection piston rod. The first and second guide plates reciprocate along the first and second injection guide rods under the drive of the corresponding first and second injection cylinders.

4. The color mixing injection molding machine with modular assembly of dual injection stages as described in claim 3, characterized in that, The injection module includes a first molten plastic cylinder connected to the first injection head plate, a first injection push rod disposed within the first molten plastic cylinder, and a second molten plastic cylinder connected to the second injection head plate, and a second injection push rod disposed within the second molten plastic cylinder. The first injection push rod and the second injection push rod are respectively used to push the molten plastic in the first molten plastic cylinder and the second molten plastic cylinder to the nozzle module. The first injection push rod and the second injection push rod respectively pass through the first injection head plate and the second injection head plate, and are respectively coaxially disposed on both sides of the first injection piston rod and the second injection piston rod. The nozzle module includes a first manifold, a second manifold, and a nozzle communicating with the first manifold and the second manifold; the first manifold and the second manifold are respectively provided with a first flow channel and a second flow channel communicating with the first melt cylinder and the second melt cylinder; the first flow channel and the second flow channel extend into the nozzle, and the molten plastic flows through the first flow channel and the second flow channel respectively and is injected into the mold from the end of the nozzle.

5. The color mixing injection molding machine with modular assembly of dual injection stages as described in claim 4, characterized in that, The first guide plate and the second guide plate are respectively provided with a first mounting hole and a second mounting hole at their centers. The ends of the first injection push rod and the second injection push rod away from the nozzle module are respectively located in the first mounting hole and the second mounting hole and locked. The upper and lower ends of the first guide plate and the second guide plate are respectively provided with a first guide hole and a second guide hole that are adapted to the first injection push rod and the second injection push rod. Each set of first guide holes and second guide holes is located on the same straight line as the center of the corresponding first mounting hole and the second mounting hole. The straight line containing the center of the two first guide holes and the center of the first mounting hole on the first guide plate forms an isosceles triangle arrangement with the corresponding center line on the second guide plate.

6. The color mixing injection molding machine with modular assembly of dual injection stages as described in claim 5, characterized in that, The color mixing injection molding machine also includes a front support seat, a rear support seat, and injection guide rods connecting the front support seat and the rear support seat; the top of the front support seat and the rear support seat are respectively provided with V-shaped openings, one side of the V-shaped openings corresponding to the support steps; the two injection guide rods slide through the bottom of the first injection head plate and the first injection second plate respectively, and are respectively connected to both sides of the V-shaped openings of the front support seat and the rear support seat; the projection of the straight line where the axis of the first injection piston rod is located coincides with the projection of the central axis of the V-shaped opening.

7. A method for disassembling and assembling a color mixing injection molding machine with a modular assembly of dual injection stages as described in claim 6, characterized in that, The assembly of the color mixing injection molding machine includes the following steps: Step 1: Assembly of the first firing platform module; First, fix the front and rear support seats on the injection molding machine frame, ensuring their axes are aligned and level. Then, pass the two injection guide rods through the bottom of the first injection head plate and the first injection second plate, respectively, and hoist them together onto the front and rear support seats using a hoisting device, completing the connection between the two injection guide rods and the front and rear support seats. Next, install the two first injection guide rods and the first guide plate between the first injection head plate and the first injection second plate in sequence. Then, install the first injection cylinder behind the first injection second plate and complete the connection between the first injection piston rod and the center of the first guide plate. Step 2: Assembly of the second firing platform module; First, hoist the second injection head plate to one side of the first injection head plate, ensuring that the engagement step of the second injection head plate is engaged with the support step of the first injection head plate. Adjust the position of the second injection head plate and lock it by adjusting the slide rod and / or the threaded adjustment rod. Then, install the two second injection guide rods and the second guide plate between the second injection head plate and the second injection plate in sequence. Next, install the second injection cylinder behind the second injection plate and complete the connection between the second injection piston rod and the center of the second guide plate. Alternatively, the second injection station module can be pre-installed and then hoisted onto the first injection station module as a whole using hoisting equipment. The position of the second injection head plate can be adjusted and locked by adjusting the sliding rod and / or the threaded adjusting rod. Step 3: Assembly of the injection module and nozzle module; The first and second melt cylinders are fixedly installed on the first and second injection head plates, respectively. The first and second injection push rods are inserted into the first and second melt cylinders, respectively, and connected to the corresponding first and second guide plates. Then, the first and second manifolds are installed in front of the first and second melt cylinders, respectively. Finally, the nozzle module is installed at the front end of the manifold to complete the assembly.

8. A method for disassembling and assembling a color mixing injection molding machine with a modular assembly of dual injection stages as described in claim 7, characterized in that, The disassembly and maintenance method for the second firing platform module includes the following steps: Step 1: Disconnect the nozzle module, the first manifold, and the second manifold in sequence; Step 2: Loosen the adjusting slide rod and threaded adjusting rod between the first injection head plate and the second injection head plate, and between the first injection plate and the second injection plate, so that the second injection stage module is in a separable state; Step 3: Use hoisting equipment to lift the second injection station module as a whole to the workbench, disconnect the connection between the second injection push rod and the second melting cylinder, and remove it from the front; Step 4: After maintenance, reassemble the second injection push rod and the second melting cylinder, and hoist the whole assembly back onto the first injection platform module for docking, adjustment and locking.

9. A method for disassembling and assembling a color mixing injection molding machine with a modular assembly of dual injection stages as described in claim 8, characterized in that, The disassembly and maintenance method of the injection module includes the following steps: Step 1: Disconnect the nozzle module, the first manifold, and the second manifold in sequence; Step 2: With the first injection module still installed, disassemble the first melt cylinder and the first injection push rod separately for maintenance; or disassemble the second melt cylinder and the second injection push rod as needed to adapt to different colored materials or for thorough cleaning. Step 3: After maintenance, reinstall the first melt cylinder and the first injection push rod and / or the second melt cylinder and the second injection push rod.

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