A hydraulic-electric single-slide vertical injection molding machine

Abstract

This utility model provides a hydraulic-electric single-slide vertical injection molding machine, including a machine body, a fixed seat on the machine body, a feeding fixed plate slidably connected above the fixed seat, a lower seat plate above the feeding fixed plate, and a guide shaft fixedly connected between the lower seat plate and the fixed seat. In this utility model, by setting a double screw drive assembly, the feeding fixed plate, which is fixedly installed on the material tube, can move up and down reciprocally. By setting a single screw drive assembly, the helical structure on the injection transmission mechanism can apply a thrust to the material in the material tube and complete the injection action. Compared with the existing structure using a seat cylinder and injection cylinder drive, this setting can improve injection accuracy, the electric injection accuracy can reach ±0.02, and the injection response is fast, the injection speed is fast, and the consumption of vulnerable parts (cylinder seals, oil seals, dust seals, etc.) is reduced, thus saving costs.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to a hydraulic-electric single-slide vertical injection molding machine. Background Technology

[0002] In existing vertical injection molding machines, both mold clamping and injection are hydraulically driven, resulting in insufficient injection precision. The entire injection molding machine operation is completed using hydraulic cylinders, hence the name "all-oil vertical injection molding machine." In the current technology, the material inside the injection tube is usually fed by a hydraulic motor, and then the injection cylinder provides injection pressure to complete the injection and release. The seat cylinder completes the seat advance and seat retraction of the material tube, and the mold clamping mechanism completes the mold opening and closing and provides high pressure.

[0003] However, this method of injection drive and tube up-and-down movement has its shortcomings: the injection mechanism uses a hydraulic cylinder, and due to internal leakage of the cylinder piston and various valves, the injection accuracy is within ±0.1, the response speed is slow, and the cylinder seals are easily damaged and need to be replaced frequently.

[0004] Therefore, this utility model provides a hydraulic-electric single-slide vertical injection molding machine. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a hydraulic-electric single-slide vertical injection molding machine to solve the problems mentioned in the background. This invention uses a screw drive to provide the feeding and retraction drive rod force for the material tube, as well as the driving force for the injection of liquid material, which can greatly improve injection accuracy and save on wear parts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic-electric single-slide vertical injection molding machine includes a machine body, a fixed base on the machine body, a feeding fixed plate slidably connected above the fixed base, a lower base plate above the feeding fixed plate, a guide shaft fixedly connected between the lower base plate and the fixed base, the feeding fixed plate and the guide shaft slidingly engaging vertically, an upper base plate located above the lower base plate fixedly connected to the top of the feeding fixed plate via a guide post, an injection transmission mechanism slidably connected to the guide post, the upper base plate connected to the top of the injection transmission mechanism via a single screw drive assembly, a material tube located below the injection transmission mechanism fixedly disposed in the middle of the feeding fixed plate, the material tube being connected to the injection transmission mechanism, and the feeding fixed plate connected to the lower base plate via a double screw drive assembly.

[0007] Furthermore, the single lead screw drive assembly includes a screw and a screw sleeve. The top of the screw is rotatably connected to the middle of the upper seat plate, the bottom of the screw sleeve is fixedly connected to the top of the injection transmission mechanism, and the top of the screw sleeve is sleeved on the screw.

[0008] Furthermore, the bottom of the upper base plate is fixedly connected to the upper machine base, and the bottom of the upper machine base is fixedly connected to the upper control motor, which is connected to the top of the screw via an upper belt drive assembly.

[0009] Furthermore, the dual lead screw drive assembly includes a lead screw and a lead sleeve. The lead screw is rotatably connected to the lower seat plate, and the lead sleeve is sleeved on the lead screw and fixedly connected to the feeding fixing plate.

[0010] Furthermore, a lower machine base is fixedly connected to one side of the lower base plate, and a lower control motor is fixedly connected to the top of the lower machine base. The output shaft of the lower control motor is connected to the top of the lead screw through a lower belt drive assembly.

[0011] Furthermore, there are two lead screws located on both sides of the feed tube.

[0012] Furthermore, the injection transmission mechanism includes a positioning plate that slides in cooperation with the guide post.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, by setting a double screw drive assembly, the feeding fixing plate of the fixed installation tube can move up and down reciprocally. By setting a single screw drive assembly, the spiral structure on the injection transmission mechanism can be driven to apply a thrust to the material in the tube and complete the injection action. Compared with the existing structure using a seat cylinder and injection cylinder drive, this setting can improve the injection accuracy, the electric injection accuracy can reach ±0.02, and the injection response is fast, the injection speed is fast, and the vulnerable parts (cylinder seals, oil seals, dust seals, etc.) are saved, thus saving costs.

[0015] 2. In this utility model, the double lead screw transmission assembly includes two lead screws located on both sides of the material cylinder. When the two lead screws rotate synchronously, the feeding fixing plate can be evenly stressed, making the lifting and lowering action of the material cylinder more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a double lead screw drive assembly and a single lead screw drive assembly of a hydraulic single-plate vertical injection molding machine according to the present invention.

[0017] Figure 2 This is a schematic diagram of the feeding fixing plate, injection transmission mechanism and material tube connection of a hydraulic single-slide vertical injection molding machine according to the present invention.

[0018] Figure 3 This is a front view of a vertical injection molding machine with a single sliding plate and electric power supply according to this utility model.

[0019] In the diagram: 1. Machine body; 2. Fixed base; 3. Feeding fixed plate; 4. Lower base plate; 5. Guide shaft; 6. Guide column; 7. Upper base plate; 8. Injection transmission mechanism; 81. Positioning plate; 9. Single screw transmission assembly; 91. Screw; 92. Screw sleeve; 101. Material tube; 102. Double screw transmission assembly; 1021. Screw; 1022. Screw sleeve; 103. Upper machine base; 104. Upper control motor; 105. Upper belt transmission assembly; 106. Lower machine base; 107. Lower control motor; 108. Lower belt transmission assembly. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 3 This utility model provides a technical solution: a vertical injection molding machine with a single sliding plate, including a machine body 1, a fixed seat 2 on the machine body 1, a mold pouring port below the fixed seat 2, a feeding fixed plate 3 slidably connected above the fixed seat 2, a lower seat plate 4 above the feeding fixed plate 3, a guide shaft 5 fixedly connected between the lower seat plate 4 and the fixed seat 2, the feeding fixed plate 3 and the guide shaft 5 slidingly engaging vertically, the top of the feeding fixed plate 3 being fixedly connected to an upper seat plate 7 located above the lower seat plate 4 via a guide post 6, the guide post 6 being slidably connected to an injection transmission mechanism 8, specifically, the injection transmission mechanism 8 including a positioning plate 81 slidably engaging with the guide post 6, a guide sleeve fixedly mounted on the positioning plate 81 and sleeved on the guide shaft 5, thereby enabling the feeding fixed plate 3 to move up and down, and driving the upper seat plate 7 to move up and down synchronously during its up and down movement.

[0022] A material tube 101 located below the injection transmission mechanism 8 is fixedly installed in the middle of the feeding plate 3. The material tube 101 is connected to the injection transmission mechanism 8. The function of the injection transmission mechanism 8 is to perform material suction and material pressing transmission. Material suction means to introduce external materials into the material tube 101, and material pressing means to push the material in the material tube 101 outward from the bottom. Its specific structure is prior art and will not be described in detail in this application.

[0023] The upper plate 7 is connected to the top of the injection transmission mechanism 8 via a single screw drive assembly 9. The function of the single screw drive assembly 9 is to apply the material pressing force to the injection transmission mechanism 8.

[0024] Specifically, the single screw drive assembly 9 includes a screw 91 and a screw sleeve 92. The top of the screw 91 is rotatably connected to the middle of the upper seat plate 7, and the bottom of the screw sleeve 92 is fixedly connected to the top of the injection transmission mechanism 8. The top of the screw sleeve 92 is sleeved on the screw 91. When the screw 91 rotates, it can use the rotational force to push the screw sleeve 92 to move axially, thereby driving the injection transmission mechanism 8 to move up and down.

[0025] Furthermore, the bottom of the upper base plate 7 is fixedly connected to the upper base 103, and the bottom of the upper base 103 is fixedly connected to the upper control motor 104. The upper control motor 104 is connected to the top of the screw 91 through the upper belt drive group 105. The upper belt drive group 105 adopts a structure of synchronous drive belt and synchronous pulley, which can accurately control the number of rotations of the screw 91.

[0026] The feeding fixing plate 3 is connected to the lower seat plate 4 through the double screw drive assembly 102. The lower seat plate 4 can control the feeding fixing plate 3 to move up and down through the double screw drive assembly 102, thereby controlling the material tube 101 to move up and down.

[0027] Specifically, the dual lead screw drive assembly 102 includes a lead screw 1021 and a lead sleeve 1022. The lead screw 1021 is rotatably connected to the lower base plate 4. The lead sleeve 1022 is sleeved on the lead screw 1021 and fixedly connected to the feeding fixing plate 3. When the lead screw 1021 rotates, it can use the rotational force to drive the lead sleeve 1022 to move axially, thereby driving the feeding fixing plate 3 to move synchronously. Among them, a lower machine base 106 is fixedly connected to one side of the lower base plate 4, and a lower control motor 107 is fixedly connected to the top of the lower machine base 106. The output shaft of the lower control motor 107 is connected to the top of the lead screw 1021 through a lower belt drive assembly 108. The lower belt drive assembly 108 also adopts a structure of synchronous drive belt and synchronous pulley.

[0028] In this embodiment, there are two lead screws 1021 located on both sides of the feed tube 101. This arrangement ensures that the force is evenly distributed when the feeding fixing plate 3 moves up and down.

[0029] Working principle: When injection molding is required, first control the lead screw 1021 to rotate. Under the drive of the sleeve 1022, the material tube 101 descends to connect with its injection nozzle and sprue. Then control the screw 91 to rotate, and the sleeve 92 descends axially. Through the injection transmission mechanism 8, the material in the material tube 101 is injected into the mold cavity through the injection nozzle. After injection, control the lead screw 1021 to rotate in the opposite direction. The sleeve 1022 drives the material tube 101 to move upward through the feeding fixing plate 3. Then control the screw 91 to reverse so that the injection transmission mechanism 8 can be reset, waiting for the next injection operation.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vertical injection molding machine with a single sliding plate and an electric motor, comprising a machine body (1), a fixed seat (2) provided on the machine body (1), a feeding fixed plate (3) slidably connected above the fixed seat (2), a lower seat plate (4) provided above the feeding fixed plate (3), a guide shaft (5) fixedly connected between the lower seat plate (4) and the fixed seat (2), the feeding fixed plate (3) and the guide shaft (5) slidingly engaging vertically, the top of the feeding fixed plate (3) being fixedly connected to an upper seat plate (7) located above the lower seat plate (4) via a guide post (6), and an injection transmission mechanism (8) slidably connected to the guide post (6), characterized in that, The upper seat plate (7) is connected to the top of the injection transmission mechanism (8) via a single screw drive assembly (9). The middle part of the feeding fixing plate (3) is fixedly provided with a material tube (101) located below the injection transmission mechanism (8). The material tube (101) is connected to the injection transmission mechanism (8). The feeding fixing plate (3) is connected to the lower seat plate (4) via a double screw drive assembly (102).

2. The vertical injection molding machine with a single sliding plate according to claim 1, characterized in that: The single screw drive assembly (9) includes a screw (91) and a screw sleeve (92). The top of the screw (91) is rotatably connected to the middle of the upper seat plate (7), and the bottom of the screw sleeve (92) is fixedly connected to the top of the injection transmission mechanism (8). The top of the screw sleeve (92) is sleeved on the screw (91).

3. The vertical injection molding machine with a single sliding plate according to claim 2, characterized in that: The bottom of the upper base plate (7) is fixedly connected to the upper base (103), and the bottom of the upper base (103) is fixedly connected to the upper control motor (104). The upper control motor (104) is connected to the top of the screw (91) through the upper belt drive group (105).

4. The vertical injection molding machine with a single sliding plate according to claim 1, characterized in that: The dual lead screw transmission assembly (102) includes a lead screw (1021) and a lead sleeve (1022). The lead screw (1021) is rotatably connected to the lower seat plate (4). The lead sleeve (1022) is sleeved on the lead screw (1021) and fixedly connected to the feeding fixing plate (3).

5. A vertical injection molding machine with a single sliding plate according to claim 4, characterized in that: A lower base (106) is fixedly connected to one side of the lower base plate (4), and a lower control motor (107) is fixedly connected to the top of the lower base (106). The output shaft of the lower control motor (107) is connected to the top of the lead screw (1021) through the lower belt drive assembly (108).

6. A vertical injection molding machine with a single sliding plate according to claim 4, characterized in that: There are two lead screws (1021) located on both sides of the feed tube (101).

7. A vertical injection molding machine with a single sliding plate according to claim 1, characterized in that: The injection transmission mechanism (8) includes a positioning plate (81) that slides with the guide post (6).

Images