Double-screw-rod vertical electric injection mechanism

Abstract

The utility model discloses a double screw rod vertical electric ejection mechanism, including the ejection platform subassembly and setting on the ejection platform subassembly and ejecting the subassembly, the ejection platform subassembly on be provided with the seat cylinder subassembly and the ejection guide machine column, ejecting the subassembly through a motor seat subassembly sliding and being arranged on the ejection guide machine column, ejecting the subassembly includes a synchronous drive mechanism and the ejection double screw rod subassembly driven through synchronous drive mechanism. This double screw rod vertical electric ejection mechanism adopts single synchronous drive mechanism synchronous drive ejection double screw rod subassembly, and the synchronous performance is good, avoids the problem of the wear and tear of the part caused by the inconsistent stroke of two hydraulic cylinders in the traditional injection unit, and the transmission efficiency of screw rod transmission is high, and the service life is long, and the response speed of electric screw rod is faster, and the acceleration is high, can improve production efficiency, and the precision is higher. Moreover, the structure is simpler, and the required installation position is smaller, and the cost is low, and there is no hydraulic oil pollution, and the use is more extensive.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a dual-screw vertical electric injection mechanism. Background Technology

[0002] Because hydraulic cylinders have many advantages such as low cost, high power transmission per unit volume, and the flexible buffering characteristics of hydraulic systems that can absorb impact vibration (redundant protection), most injection molding machines use fluid transmission hydraulic cylinders.

[0003] However, in actual use, hydraulic cylinder transmission has the following problems: leakage, environmental pollution, high maintenance costs, low precision, injection requires two cylinders, the stroke of the two cylinders is deviated, and there will be slight shaking during injection when starting.

[0004] In actual use, the load on the injection molding machine's injection assembly is not large, so the advantages of hydraulic cylinder transmission are not significant. The injection assembly requires high-precision transmission and rapid response; therefore, to improve the accuracy and response speed of the injection assembly, it is necessary to adopt a more precise transmission method to replace the traditional hydraulic cylinder transmission.

[0005] Screw drives are well-suited for short distances, offering high-precision transmission and rapid response, and can completely replace injection cylinders in injection molding assemblies. For example, Chinese patent document CN220331890U discloses a vertical injection unit for an injection molding machine, including a first drive mechanism, a second drive mechanism mounted above the first drive mechanism, and a third drive mechanism mounted in the middle of the second drive mechanism. The bottom of the first drive mechanism is a fixed plate, and a first motor is mounted on one side of the fixed plate. The first, second, and third drive mechanisms are arranged in an upper-middle-lower structure. Although the above technical solution uses a double screw structure, the use of three sets of drive mechanisms to achieve injection drive results in complex structure and high manufacturing costs. Utility Model Content

[0006] The purpose of this invention is to solve the problems of low precision and slow response speed in existing injection components that use hydraulic cylinder transmission, as well as the problems of complex structure and high cost in screw-driven injection units. The invention provides a double screw vertical electric injection mechanism that can achieve high precision transmission, fast response speed, high acceleration, long service life, no risk of oil leakage, high cleanliness, high production efficiency, and simple structure.

[0007] The technical solution adopted by this utility model to achieve its inventive purpose is: a dual-screw vertical electric injection mechanism, including an injection table assembly and an injection component mounted on the injection table assembly. The injection table assembly is equipped with a seat cylinder assembly and an injection guide column. The injection component is slidably mounted on the injection guide column via a motor seat assembly. The injection component includes a synchronous drive mechanism and an injection dual-screw assembly driven by the synchronous drive mechanism. This dual-screw vertical electric injection mechanism, through innovative design, mounts the injection component on an injection table assembly, and the injection component uses only one set of synchronous drive mechanisms to drive the injection dual-screw assembly, achieving electric injection in conjunction with the seat cylinder assembly. The injection mechanism is pressed downwards towards the injection mold by a seat cylinder assembly. A single synchronous drive mechanism then synchronously drives the injection twin-screw assembly, which in turn drives the screw in the screw-barrel assembly for injection. This ensures excellent synchronization and avoids the wear problems caused by inconsistent strokes of two hydraulic cylinders in traditional injection units. Furthermore, the screw drive offers high transmission efficiency and a long service life, while the electric screw provides faster response and higher acceleration, improving production efficiency and precision. This injection mechanism also features a simpler structure, requires less installation space, is easier to maintain, has lower costs, and produces no hydraulic oil contamination, making it widely applicable in environments with high cleanliness requirements and broadening its application range.

[0008] Preferably, the injection assembly further includes an upper template, which is slidably mounted on the injection guide column below the motor base assembly. The inclusion of the upper template in the injection assembly facilitates the installation of the screw and barrel assembly and the hopper assembly, while also simplifying the overall structure of the injection mechanism. The injection twin screw assembly is directly connected to the upper template, achieving integrated installation of the injection assembly, improving transmission accuracy, and consequently enhancing injection accuracy and stability.

[0009] Preferably, the injection twin-screw assembly includes two injection screws arranged perpendicular to the motor base assembly, and the injection screws are threadedly connected to the upper template. The injection twin-screw assembly mainly includes two injection screws, which are threadedly connected to the upper template, thereby driving the motor base assembly to move downwards, and thus driving the screw to achieve injection.

[0010] Preferably, the synchronous drive mechanism includes a servo motor mounted on the motor mount assembly and a synchronous dual-pulley assembly driven by the servo motor. The synchronous drive mechanism, with a single servo motor driving the synchronous dual-pulley assembly, offers excellent synchronization, significantly improving injection stability and precision. Compared to existing technologies using multiple motors, the structure is more streamlined, requires less installation space, and has lower maintenance costs.

[0011] Preferably, the synchronous dual-pulley assembly includes an injection synchronous pulley one, an injection synchronous pulley two, and an injection synchronous belt. The injection synchronous pulley one and the injection synchronous pulley two are respectively connected to two injection screws. The injection synchronous pulley assembly uses one injection synchronous pulley to drive one injection screw, which can realize the synchronous movement of the two injection screws, improve the movement accuracy, and thus improve the injection accuracy.

[0012] Preferably, the synchronous dual-pulley assembly also includes a tension pulley. The tension pulley is provided to adjust the tension of the injected synchronous belt.

[0013] Preferably, an injection drive pulley is provided on the output shaft of the servo motor, and the injection timing belt is wound around the injection drive pulley, injection timing pulley one, and injection timing pulley two. By providing an injection drive pulley on the same single servo motor output shaft, the two injection timing pulleys one and two are driven to rotate synchronously via the injection timing belt, thereby achieving synchronous rotation of the two injection screws.

[0014] Preferably, each of the injection timing pulleys includes a pulley shaft, which is rotatably connected to the motor housing assembly via bearings. The lower end of the pulley shaft is connected to the injection screw. Alternatively, each of the injection timing pulleys can be provided with a pulley shaft, with the lower end of the pulley shaft connected to the injection screw and driving the injection screw to rotate.

[0015] Preferably, the injection screw is rotatably connected to the motor housing assembly via bearings, and the first and second injection timing pulleys are located at the upper end of the injection screw. Alternatively, the first and second injection timing pulleys do not have axles; instead, they are directly located at the upper end of the injection screw, directly driving its rotation.

[0016] Preferably, the injection unit assembly includes an injection unit transition plate with a U-shaped structure. The injection guide column is positioned along one diagonal of the injection unit transition plate, and the cylinder assembly is positioned along the other diagonal of the injection unit transition plate. By providing an injection unit transition plate, connection to the injection molding machine is facilitated, as is the placement of the cylinder assembly and the injection assembly. Furthermore, the diagonal arrangement of the cylinder assembly and injection guide column improves stability and injection accuracy.

[0017] Preferably, a material storage drive mechanism is also included; the material storage drive mechanism includes a material storage servo motor, a material storage transmission assembly, and a transmission shaft. The material storage is achieved by driving the screw and barrel assembly through the material storage drive mechanism.

[0018] The beneficial effects of this utility model are as follows: This dual-screw vertical electric injection mechanism uses a single servo motor to drive the dual-screw transmission, resulting in higher transmission efficiency and a longer service life; it avoids the leakage risk and maintenance burden of the hydraulic system, eliminates hydraulic oil pollution, and is suitable for scenarios with high cleanliness requirements; the electric screw has a faster response speed and higher acceleration, which can improve production efficiency; and it has higher precision. Compared with the existing technology that uses two hydraulic cylinders for transmission, it can ensure synchronization, avoid the wear of parts caused by inconsistent strokes of the two hydraulic cylinders, and greatly extend the service life. Compared with dual-motor drive or multi-motor drive, the single motor and synchronous belt drive structure is simpler, lower in cost, requires less installation space, and is easier to maintain. Single-motor maintenance only requires periodic inspection and replacement of the synchronous belt and inspection of the screw stroke, while dual-motor or multi-motor maintenance requires parameter calibration. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a structure of the double-screw vertical electric injection mechanism of this utility model.

[0020] Figure 2 This is a structural schematic diagram of the double-screw vertical electric injection mechanism of this utility model from another angle.

[0021] Figure 3 This is a schematic diagram of the structure of the dual-screw vertical electric injection mechanism (material removal and storage drive mechanism) of this utility model.

[0022] Figure 4 This is the front view of the double-screw vertical electric injection mechanism of this utility model.

[0023] Figure 5 This is a top view of the double-screw vertical electric injection mechanism of this utility model.

[0024] Figure 6 yes Figure 5 Sectional view of AA.

[0025] Figure 7 This is a schematic diagram of a structure of the double lead screw vertical electric injection mechanism in Example 2.

[0026] Figure 8 This is a schematic diagram of one structure of the launcher assembly in this utility model.

[0027] Figure 9 This is a schematic diagram of a motor mount assembly in this utility model.

[0028] Figure 10 This is a schematic diagram of one type of injection assembly in this utility model.

[0029] Figure 11 This is a schematic diagram of the structure of the upper template in this utility model.

[0030] In the diagram: 1. Injection stage assembly; 11. Injection unit transition plate; 12. Mounting position; 13. Column mounting sleeve; 14. Injection guide column.

[0031] 2. Motor base assembly; 21. Motor base body; 22. Machine column through hole; 23. Motor mounting base; 24. Mounting boss; 25. Material storage motor mounting bracket; 26. Injection pulley mounting hole; 27. Tension wheel mounting hole.

[0032] 3. Hopper assembly; 31. Hopper; 32. Material pipe; 33. Discharge port seat;

[0033] 4. Injection assembly; 41. Servo motor; 42. Injection drive pulley; 43. Tension wheel; 44. Injection timing pulley one; 45. Injection timing pulley two; 46. Injection timing belt; 47. Injection screw; 48. Pulley shaft.

[0034] 5. Screw and barrel assembly; 51. Screw and barrel; 52. Screw; 53. Screw head; 54. Nozzle;

[0035] 6. Cylinder seat assembly; 61. Cylinder seat liner; 62. Cylinder seat spindle; 63. Cylinder seat rear cover; 64. Cylinder seat liner body; 65. Cylinder seat front cover.

[0036] 7. Upper template; 70. Injection screw shaft mounting hole; 71. Injection guide column mounting part; 72. Seat cylinder mounting part; 73. Injection guide column sliding hole; 74. Seat cylinder mandrel mounting hole; 75. Screw and barrel assembly mounting position; 76. Screw and barrel mounting hole; 77. Hopper assembly mounting part; 78. Feed inlet; 79. Injection screw shaft mounting part.

[0037] 8. Lead screw nut; 9. Lead screw nut retaining ring; 10. Ball screw bearing; 20. Weighing sensor;

[0038] 30. Material storage drive mechanism; 301. Material storage drive pulley; 302. Material storage driven pulley; 303. Drive shaft; 304. Material storage drive pulley. Detailed Implementation

[0039] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Contents not described in detail in this specification are prior art known to those skilled in the art.

[0040] Example 1:

[0041] exist Figure 1 , Figure 2 , Figure 4 , Figure 5In the illustrated embodiment, a dual-screw vertical electric injection mechanism includes an injection stage assembly 1 and an injection assembly 4 mounted on the injection stage assembly. The injection stage assembly 1 is equipped with a seat cylinder assembly 6 and an injection guide column 14. The injection assembly 4 is slidably mounted on the injection guide column 14 via a motor seat assembly 2. The injection assembly 4 includes a synchronous drive mechanism, an injection dual-screw assembly driven by the synchronous drive mechanism, and an upper template 7. The upper template 7 is slidably mounted on the injection guide column 14 below the motor seat assembly 2. By mounting the injection assembly 4 on the injection stage assembly 1, and using only one set of synchronous drive mechanisms to drive the injection dual-screw assembly, electric injection can be achieved in conjunction with the seat cylinder assembly 6. This forms a novel electric injection mechanism where the seat cylinder assembly and a single drive mechanism drive the injection dual-screw assembly. The use of a single servo motor to drive the dual-screw transmission results in higher transmission efficiency and a longer service life. It avoids the leakage risk and maintenance burden of the hydraulic system, eliminates hydraulic oil contamination, and is suitable for scenarios with high cleanliness requirements.

[0042] The injection twin lead screw assembly includes two injection lead screws 47 arranged perpendicular to the motor base assembly 2. The injection lead screws 47 are threadedly connected to the upper template 7. The two injection lead screws 47 are threaded onto the upper template 7 via lead screw nuts 8. Specifically, the lead screw nuts 8 are internally fixed to the upper template 7 and locked to the lower surface of the upper template 7 via a lead screw nut fixing ring 9. The injection lead screws 47 rotate under the drive of a synchronous drive mechanism, thereby realizing the up-and-down movement of the upper template.

[0043] The synchronous drive mechanism includes a servo motor 41 mounted on the motor base assembly 2 and a synchronous double pulley assembly driven synchronously by the servo motor. The synchronous double pulley assembly includes an injection synchronous pulley 44, an injection synchronous pulley 45, and an injection synchronous belt 46. The injection synchronous pulleys 44 and 45 are respectively connected to two injection screws 47. The synchronous drive mechanism uses a single servo motor to drive the synchronous double pulley assembly, resulting in good synchronization, greatly improving injection stability and accuracy, a more streamlined structure, and a smaller installation space. The electric screws have faster response speeds and higher acceleration, improving production efficiency and precision. Compared to the existing technology using two hydraulic cylinders for transmission, this ensures synchronization, avoids wear on parts caused by inconsistent strokes of the two hydraulic cylinders, and greatly extends service life.

[0044] The output shaft of the servo motor is perpendicular to the motor mount assembly 2 and faces upwards. An injection drive pulley 42 is mounted on the output shaft of the servo motor. The injection timing belt 46 is wound around the injection drive pulley 42, the first injection timing pulley 44, and the second injection timing pulley 45. Figure 6As shown, in this embodiment, the first injection timing pulley 44 and the second injection timing pulley 45 are directly connected to the injection screw 47 to directly drive the injection screw to rotate. The injection screw 47 extends upward through the motor housing assembly and is rotatably connected to the motor housing assembly via bearings. The first injection timing pulley 44 and the second injection timing pulley 45 are located at the upper end of the injection screw 47.

[0045] Injection process: The seat cylinder assembly moves, driving the upper mold plate and motor seat assembly to move the entire injection mechanism downward, so that the nozzle is close to the injection mold, ready for injection.

[0046] The storage drive mechanism 30 drives the screw to rotate, and feeds the injection plastic that has entered the screw barrel into the screw head for storage.

[0047] The servo motor rotates, driving the injection drive pulley 42 to rotate, which in turn drives the injection timing pulley 44 and the injection timing pulley 45 to rotate synchronously via the injection timing belt 46. The rotation of the injection timing pulley 44 and the injection timing pulley 45 drives the injection screw 47 connected to them to rotate. The motor base assembly moves downward under the drive of the injection screw, pushing the screw downward to inject the plastic into the injection mold, completing the injection and realizing the material storage injection function.

[0048] Example 2:

[0049] exist Figure 7 In the illustrated embodiment, other structural references Figure 1-6 A vertical electric injection mechanism with a double lead screw includes an injection stage assembly 1 and an injection component 4 mounted on the injection stage assembly. The injection stage assembly 1 is equipped with a seat cylinder assembly 6 and an injection guide column 14. The injection component 4 is slidably mounted on the injection guide column 14 via a motor seat assembly 2. The injection component 4 includes a synchronous drive mechanism, an injection double lead screw assembly driven by the synchronous drive mechanism, and an upper template 7. The upper template 7 is slidably mounted on the injection guide column 14 below the motor seat assembly 2. By mounting the injection component 4 on the injection stage assembly 1, and using only one set of synchronous drive mechanisms to drive the injection double lead screw assembly, electric injection can be achieved in conjunction with the seat cylinder assembly 6, thus forming a novel electric injection mechanism driven by a seat cylinder assembly and a single drive mechanism to drive the injection double lead screw assembly.

[0050] The synchronous drive mechanism includes a servo motor 41 and a synchronous dual-pulley assembly driven by the servo motor. The synchronous dual-pulley assembly includes an injection synchronous pulley 44, an injection synchronous pulley 45, and an injection synchronous belt 46, and also includes a tension wheel 43. The injection dual-screw assembly includes two injection screws 47.

[0051] The dual-screw vertical electric injection mechanism also includes a hopper assembly 3 and a screw barrel assembly 5.

[0052] like Figure 8 As shown, the injection unit assembly 1 includes an injection unit transition plate 11 with a U-shaped structure. Four mounting positions 12 are respectively provided at the four corners of the injection unit transition plate 11. In one set of mounting positions arranged diagonally, a column mounting sleeve 13 is provided. Two injection guide columns 14 are provided on the column mounting sleeve 13. In another set of mounting positions arranged diagonally, two cylinder assemblies 6 are respectively provided.

[0053] The cylinder seat assembly 6 includes a cylinder seat sleeve 61 and a cylinder seat spindle 62. The cylinder seat sleeve 61 includes a cylinder seat rear cover 63, a cylinder seat sleeve body 64, and a cylinder seat front cover 65. The cylinder seat rear cover 63 is fixedly connected to the mounting position of the injection unit transition plate 11. The cylinder seat spindle 62 is vertically upward and connected to the injection assembly 4.

[0054] like Figure 9 As shown, the motor base assembly 2 includes a motor base body 21. Symmetrical through holes 22 for the injection guide column 14 are provided on the motor base body 21. A motor mounting base 23 extends outward from one edge of the motor base body 21. A mounting boss 24 is provided at the center of the motor base body 21, and a weighing sensor 20 is embedded in the upper part of the mounting boss 24. A storage motor mounting bracket 25 extends outward from the other edge of the motor base body 21 for mounting and positioning the injection mechanism. Injection pulley mounting holes 26 are provided at both ends of the motor base body 21, and a tension wheel mounting hole 27 is also provided near the motor mounting base 23.

[0055] like Figure 10 As shown, the injection drive pulley 42 is located on the output shaft of the servo motor. The tension pulley 43 is mounted on the motor housing 21 via a tension pulley shaft. The first injection synchronous pulley 44 and the second injection synchronous pulley 45 each include a pulley shaft 48. The pulley shaft 48 is vertically inserted inside the motor housing assembly 2 and rotatably connected to the motor housing assembly via bearings. The lower end of the pulley shaft 48 is connected to the injection lead screw 47. The injection synchronous belt 46 is wound around the injection drive pulley 42, the tension pulley 43, the first injection synchronous pulley 44, and the second injection synchronous pulley 45.

[0056] like Figure 11 As shown, the upper template 7 is provided with an injection guide column mounting part 71 and a seat cylinder mounting part 72 diagonally. An injection guide column sliding hole 73 is provided on the injection guide column mounting part 71, and a seat cylinder mandrel mounting hole 74 is provided on the seat cylinder mounting part 72.

[0057] A screw barrel assembly mounting position 75 is provided at the center of the upper template 7. A screw barrel mounting hole 76 is provided on the screw barrel mounting position 75. A hopper assembly mounting part 77 is provided on the side of the upper template corresponding to the screw barrel mounting hole 76. A feed inlet 78 connected to the screw barrel is provided on the hopper assembly mounting part 77.

[0058] The upper template 7 is provided with an injection screw shaft mounting part 79 corresponding to the injection screw 47. An injection screw shaft mounting hole 70 is provided on the injection screw shaft mounting part 79. The injection screw shaft 47 is connected to the injection screw shaft mounting hole 70 through a screw nut 8 provided inside the injection screw shaft mounting hole 70. The screw nut 8 is locked and fixed on the upper template by a screw nut retaining ring 9.

[0059] The injection screw 47 and the motor housing 21 are rotatably connected by a ball screw bearing 10.

[0060] The screw and barrel assembly 5 includes a screw barrel 51, a screw 52, ​​a screw head 53, and a nozzle 54. The screw barrel 51 is fixed inside the screw barrel mounting hole 76 on the upper template 7. The screw 52 is disposed inside the screw barrel, with its upper end extending upward out of the screw barrel. The screw head 53 is disposed at the lower end of the screw. The nozzle 54 is connected to the lower end of the screw barrel for injection molding.

[0061] It also includes a storage drive mechanism 30. The storage drive mechanism 30 includes a storage servo motor 301 and a storage drive mechanism (30); the storage drive mechanism 30 includes a storage servo motor 301, a storage transmission assembly and a transmission shaft 304.

[0062] The storage transmission assembly includes a storage drive pulley 302, a storage driven pulley 303, and a storage drive pulley 305. The storage servo motor 301 is vertically mounted on the storage motor mounting bracket 25, with its output axis pointing upwards. The storage drive pulley 302 is fixed to the output shaft of the storage servo motor 301. The drive shaft 304 is rotatably mounted inside the weighing sensor 20 via a set of bearings and is coaxially connected downwards to the screw. During storage, the drive shaft connects to the screw and drives it to rotate for storage. The storage driven pulley 303 is located at the upper end of the drive shaft 304, and the storage drive pulley 305 is wound around the storage drive pulley 302 and the storage driven pulley 303. When storage is required, the storage servo motor 301 drives the storage drive pulley to rotate, thereby driving the drive shaft 304 to rotate, which in turn drives the screw to rotate for storage.

[0063] The hopper assembly 3 includes a hopper 31, a material pipe 32, and a discharge port seat 33. The discharge port seat 33 is connected to the inlet 78 on the upper template 7. The material pipe 32 is inclinedly arranged on the discharge port seat 33, and the hopper 31 is arranged at the upper end of the material pipe 32.

[0064] When in use, the dual-screw vertical electric injection mechanism is connected to the injection molding machine. The seat cylinder assembly moves, and through the seat cylinder, the upper mold plate and the motor seat assembly, along with the entire injection mechanism, move downward, so that the nozzle is close to the injection mold, ready for injection.

[0065] The storage servo motor 301 drives the screw to rotate, and feeds the injection plastic that has entered the screw barrel into the hopper assembly and stores it at the screw head.

[0066] The servo motor rotates, driving the injection drive pulley 42 to rotate, which in turn drives the injection timing pulley 44 and the injection timing pulley 45 to rotate synchronously via the injection timing belt 46. The rotation of the injection timing pulley 44 and the injection timing pulley 45 drives the injection screw 47 connected to them to rotate. The motor base assembly moves downward under the drive of the injection screw, pushing the screw downward to inject the plastic into the injection mold, completing the injection and realizing the material storage injection function.

[0067] This dual-screw vertical electric injection mechanism achieves the function of a hydraulic cylinder (injection cylinder) through two injection screws in the injection assembly. This avoids the risk of leakage in the hydraulic system and the maintenance burden such as replacing hydraulic oil and seals. The screw drive has higher transmission efficiency and longer service life; there is no hydraulic oil pollution, making it widely applicable to scenarios with high cleanliness requirements, such as food processing and medical equipment; the electric screw has a faster response speed and higher acceleration, which can improve production efficiency; and it has higher precision.

[0068] The two injection screws are driven synchronously by a single servo motor via a timing belt, ensuring synchronicity and avoiding wear on parts caused by inconsistent strokes of the two hydraulic cylinders, thus greatly extending their service life. Compared to dual-motor drives, the structure of a single servo motor paired with a timing belt drive is simpler, lower in cost, requires less installation space, and is easier to maintain. Single-motor maintenance only requires periodic inspection and replacement of the timing belt and checking the screw stroke, while dual-motor maintenance requires parameter calibration, making it more complex and costly.

[0069] The above embodiments are only some embodiments of this utility model, and not all embodiments. Furthermore, based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort and based on the technical solutions of this application should fall within the protection scope of this utility model.

Claims

1. A twin-screw rod vertical electric injection mechanism characterized by: It includes a firing table assembly (1) and an injection assembly (4) disposed on the firing table assembly. The firing table assembly (1) is provided with a seat cylinder assembly (6) and an injection guide column (14). The injection assembly (4) is slidably disposed on the injection guide column (14) via a motor seat assembly (2). The injection assembly (4) includes a synchronous drive mechanism and an injection twin screw assembly driven by the synchronous drive mechanism.

2. The dual-screw rod vertical electric injection mechanism according to claim 1, characterized in that: The injection assembly (4) further includes an upper template (7), which is slidably disposed on the injection guide column (14) below the motor seat assembly (2).

3. The dual-screw vertical electric injection mechanism according to claim 2, characterized in that: The injection twin screw assembly includes two injection screws (47) arranged perpendicular to the motor base assembly (2), and the injection screws (47) are threadedly connected to the upper template (7).

4. The dual-screw vertical electric injection mechanism according to claim 3, characterized in that: The synchronous drive mechanism includes a servo motor (41) mounted on the motor mount assembly (2) and a synchronous double pulley assembly driven by the servo motor (41).

5. The dual-screw vertical electric injection mechanism according to claim 4, characterized in that: The synchronous double pulley assembly includes an injection synchronous pulley one (44), an injection synchronous pulley two (45), and an injection synchronous belt (46). The injection synchronous pulley one (44) and the injection synchronous pulley two (45) are respectively connected to two injection screws (47). The synchronous double pulley assembly also includes a tension wheel (43).

6. The dual-screw vertical electric injection mechanism according to claim 5, characterized in that: An injection drive pulley (42) is provided on the output shaft of the servo motor (41), and the injection timing belt (46) is wound around the injection drive pulley (42), the first injection timing pulley (44), and the second injection timing pulley (45).

7. The dual-screw vertical electric injection mechanism according to claim 6, characterized in that: The first injection timing pulley (44) and the second injection timing pulley (45) each include a pulley shaft (48). The pulley shaft (48) is rotatably connected to the motor seat assembly (2) through a bearing. The lower end of the pulley shaft (48) is connected to the injection screw (47).

8. The dual-screw vertical electric injection mechanism according to claim 6, characterized in that: The injection screw (47) is rotatably connected to the motor housing assembly (2) via a bearing, and the first injection timing pulley (44) and the second injection timing pulley (45) are located at the upper end of the injection screw (47).

9. The dual-screw vertical electric injection mechanism according to any one of claims 1 to 8, characterized in that: The injection stage assembly (1) includes an injection unit transition plate (11) arranged in a U-shape. The injection guide column (14) is arranged on the injection unit transition plate (11) along one diagonal. The seat cylinder assembly (6) is arranged on the injection unit transition plate (11) along the other diagonal.

10. The dual-screw vertical electric injection mechanism according to any one of claims 1 to 8, characterized in that: It also includes a storage drive mechanism (30); the storage drive mechanism (30) includes a storage servo motor (301), a storage transmission assembly and a transmission shaft (304).

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